阅读说明：本技术 斜拉桥深水超长桩钻进数据数字识别方法和装置 (Cable-stayed bridge deepwater ultra-long pile drilling data digital identification method and device ) 是由 高军 王波 林晓 钟继卫 高峰 王翔 罗辉 汪正兴 张远征 肖龙 纪常永 荆国 于 2021-06-11 设计创作，主要内容包括：本申请实施例提供了一种斜拉桥深水超长桩钻进数据数字识别方法和装置,方法包括：通过海洋声速剖面仪器,采集待施工海域的深度、声速、温度和盐度、和海床坐标信息；基于深度、声速、温度和盐度、和海床坐标信息,构建海床地貌图；在海床上开设地震勘探井组,通过地震勘探井组获取海床地震勘探信息；基于海床地貌图和海床地震勘探信息,确定钻孔位置；该斜拉桥深水超长桩钻进数据数字识别方法一方面能够降低桩孔出现塌陷的概率；另一方面能够使得桩孔开设在地势较为平缓,且强度较高的地层上,可以保障斜拉桥的强度,同时可以相应的缩短钻孔深度,利于降低斜拉桥施工成本,缩短施工周期。(The embodiment of the application provides a method and a device for digital recognition of drilling data of a deep-water ultra-long pile of a cable-stayed bridge, wherein the method comprises the following steps: collecting depth, sound velocity, temperature, salinity and seabed coordinate information of a sea area to be constructed through an ocean sound velocity profile instrument; constructing a seabed landform map based on the depth, the sound velocity, the temperature and the salinity and the seabed coordinate information; arranging a seismic exploration well group on the seabed, and acquiring seabed seismic exploration information through the seismic exploration well group; determining the position of a drilling hole based on the seabed geomorphologic diagram and seabed seismic exploration information; the method for digitally identifying the drilling data of the deep-water ultra-long pile of the cable-stayed bridge can reduce the probability of collapse of a pile hole on one hand; on the other hand can make the stake hole set up comparatively gently at the relief, and on the higher stratum of intensity, can ensure cable-stay bridge's intensity, simultaneously can be corresponding shorten drilling depth, do benefit to and reduce cable-stay bridge construction cost, shorten construction cycle.)

1. A method for digitally identifying drilling data of a deep-water ultra-long pile of a cable-stayed bridge is characterized by comprising the following steps of:

collecting depth, sound velocity, temperature, salinity and seabed coordinate information of a sea area to be constructed through an ocean sound velocity profile instrument;

constructing a seabed geomorphology map based on the depth, the sound velocity, the temperature and salinity, and the seabed coordinate information;

arranging a seismic exploration well group on the seabed, and acquiring seabed seismic exploration information through the seismic exploration well group;

determining a borehole location based on the seabed geomorphologic map and the seabed seismic survey information;

drilling a pile hole through a gas lift reverse circulation drilling machine based on the drilling position;

acquiring the compressed gas supplement amount, the drilling pressure and the diameter of a pile hole of a gas-lift reverse circulation drilling machine in the process of executing drilling operation;

filtering the mixed slurry discharged through the drilling hole, and weighing the mass of oversize products as the discharge amount of sediment;

acquiring a pile hole cleanliness parameter based on the compressed gas feeding amount, the drilling pressure, the sediment discharging amount and the diameter of the pile hole;

analyzing the components of the oversize product to determine a first threshold value;

increasing the amount of compressed air supplemented by the gas lift reverse circulation drill body under the condition that the pile hole cleanliness parameter is less than or equal to the first threshold value;

and reducing the amount of compressed air supplemented by the gas lift reverse circulation drill body under the condition that the pile hole cleanliness parameter is greater than the first threshold value.

2. The method for digitally identifying drilling data of a deep-water ultra-long pile of a cable-stayed bridge according to claim 1, wherein the step of determining the position of a drilling hole based on the seabed geomorphologic map and the seabed seismic exploration information comprises:

determining a flat transition region through the seabed geomorphology map;

determining a stably developing stratum on the seabed through the seabed seismic exploration information;

determining the borehole location on a stably developing formation on the flat transition region;

wherein the slope angle of the flat transition zone is less than 40 degrees, and the stably developing stratum is a limestone layer.

3. The method for digitally recognizing drilling data of a deep-water ultra-long pile of a cable-stayed bridge according to claim 1, wherein the step of obtaining the pile hole cleanliness parameter based on the compressed gas supply amount, the drilling pressure, the sediment discharge amount and the diameter of the pile hole comprises:

calculating and solving the pile hole cleanliness parameter according to the following formula;

wherein K is the pile hole cleanliness parameter, Q is the compressed gas input, F is the drilling pressure, M is the sediment output, and D is the pile hole diameter.

4. The method for digitally identifying drilling data of a deep-water ultra-long pile of a cable-stayed bridge according to claim 1, wherein the step of analyzing components of the oversize products and determining the first threshold value comprises:

if the weight percentage of the sand and the stone in the oversize products is more than or equal to 40 percent, the first threshold value is 30 to 40;

and if the weight percentage of the sand and the stone in the oversize products is less than 40%, the first threshold value is 50-70.

5. The cable-stayed bridge deepwater ultra-long pile drilling data digital identification method according to claim 3, characterized by further comprising the following steps:

and reducing the rotating speed of the gas-lift reverse circulation drilling machine under the condition that the pile hole cleanliness parameter is smaller than the first threshold value.

6. The cable-stayed bridge deepwater ultra-long pile drilling data digital identification method according to claim 1, characterized by further comprising the following steps:

the weight percentage of sand and stones in the oversize materials is less than 50 percent and more than or equal to 40 percent, and the rotating speed of the gas-lift reverse circulation drilling machine is controlled to be reduced by 30 percent;

and controlling the rotating speed of the gas-lift reverse circulation drilling machine to be reduced by 50 percent, wherein the weight percentage of sand and stone in the oversize materials accounts for more than or equal to 50 percent.

7. The cable-stayed bridge deepwater ultra-long pile drilling data digital identification method according to claim 1,

and under the condition that the weight percentage of the sand and the stone in the oversize material accounts for more than or equal to 40 percent of the weight of the oversize material, increasing the density and viscosity of the slurry filled into the pile hole.

8. The method for digitally identifying the drilling data of the deep-water ultra-long pile of the cable-stayed bridge according to claim 1, wherein before the step of obtaining the compressed gas supplement amount and the bit pressure of the gas-lift reverse circulation drilling machine in the process of performing the drilling operation, the method further comprises the following steps:

acquiring the depth of a liquid level and the diameter of a pile hole;

and determining the embedding depth of the pile casing based on the liquid level depth and the diameter of the pile hole.

9. The method for digitally identifying the drilling data of the deep-water ultra-long pile of the cable-stayed bridge according to claim 8, wherein the step of determining the pre-buried depth of the casing based on the liquid level depth and the diameter of the pile hole comprises the following steps:

calculating the embedded depth of the pile casing according to the following formula;

H=h/N+1.5D

h is the pre-embedding depth of the pile casing, H is the liquid level depth, N is an adjusting parameter, the value of the adjusting parameter is 50-80, and D is the diameter of the pile hole.

10. A method for digitally identifying drilling data of a deep-water ultra-long pile of a cable-stayed bridge is characterized by comprising the following steps of:

the data detection unit is used for acquiring the depth, sound velocity, temperature and salinity of a sea area to be constructed and seabed coordinate information through an ocean sound velocity profile instrument;

a construction unit for constructing a seabed geomorphology map based on the depth, the speed of sound, the temperature and salinity, and the seabed coordinate information;

the system comprises an exploration unit, a control unit and a control unit, wherein the exploration unit is used for arranging a seismic exploration well group on the seabed and acquiring seabed seismic exploration information through the seismic exploration well group;

the selection unit is used for determining the drilling position based on the seabed landform image and the seabed seismic exploration information;

a drilling unit for drilling a pile hole by a gas lift reverse circulation drilling machine based on the drilling position;

the acquisition module is used for acquiring the compressed gas supplement amount, the drilling pressure and the pile hole diameter of the gas-lift reverse circulation drilling machine in the process of executing drilling operation;

the screening module is used for filtering the mixed slurry discharged through the drilled hole, and weighing the mass of oversize products as the sediment discharge amount;

the processing module is used for acquiring a pile hole cleanliness parameter based on the compressed gas supplement amount, the bit pressure, the sediment discharge amount and the diameter of the pile hole;

a threshold determination module to analyze a composition of the oversize material to determine a first threshold;

the adjusting module is used for increasing the amount of compressed air supplemented by the gas lift reverse circulation drill body under the condition that the pile hole cleanliness parameter is smaller than or equal to the first threshold value;

the adjusting module is further used for reducing the amount of compressed air supplemented by the gas lift reverse circulation drill body under the condition that the pile hole cleanliness parameter is larger than the first threshold value.

Technical Field

The invention relates to the technical field of bridge construction surveying, in particular to a method and a device for digitally identifying drilling data of a deep-water ultra-long pile of a cable-stayed bridge.

Background

A cable-stayed bridge (cable-stabilized bridge) is used as a cable system, has larger spanning capacity than a beam bridge, and is the most main bridge type of a large-span bridge. Cable-stayed bridges are therefore often used as sea-crossing bridges. In the cable-stayed bridge construction process in the prior art, the depth of a pile hole is mainly determined by the support stress required to be obtained by the cable-stayed bridge, the influence of seabed terrain on the engineering quality of the cable-stayed bridge is not considered in the cable-stayed bridge construction process or in the early stage of construction, a construction strategy is not formulated based on the stratum and the landform information of the seabed, the quality of the bridge is completely guaranteed by depending on the depth of the pile hole, and the construction cost is greatly increased.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art or the related art.

In view of this, according to a first aspect of the embodiments of the present application, a method for digitally identifying drilling data of a deep-water ultra-long pile of a cable-stayed bridge is provided, including:

collecting depth, sound velocity, temperature, salinity and seabed coordinate information of a sea area to be constructed through an ocean sound velocity profile instrument;

constructing a seabed geomorphology map based on the depth, the sound velocity, the temperature and salinity, and the seabed coordinate information;

arranging a seismic exploration well group on the seabed, and acquiring seabed seismic exploration information through the seismic exploration well group;

determining a borehole location based on the seabed geomorphologic map and the seabed seismic survey information;

drilling a pile hole through a gas lift reverse circulation drilling machine based on the drilling position;

acquiring the compressed gas supplement amount, the drilling pressure and the diameter of a pile hole of a gas-lift reverse circulation drilling machine in the process of executing drilling operation;

filtering the mixed slurry discharged through the drilling hole, and weighing the mass of oversize products as the discharge amount of sediment;

acquiring a pile hole cleanliness parameter based on the compressed gas feeding amount, the drilling pressure, the sediment discharging amount and the diameter of the pile hole;

analyzing the components of the oversize product to determine a first threshold value;

increasing the amount of compressed air supplemented by the gas lift reverse circulation drill body under the condition that the pile hole cleanliness parameter is less than or equal to a first threshold value;

and reducing the amount of compressed air supplemented by the gas lift reverse circulation drill body under the condition that the pile hole cleanliness parameter is greater than a first threshold value.

In one possible embodiment, the step of determining a borehole location based on the seabed geomorphology map and the seabed seismic survey information comprises:

determining a flat transition region through the seabed geomorphology map;

determining a stably developing stratum on the seabed through the seabed seismic exploration information;

determining the borehole location on a stably developing formation on the flat transition region;

wherein the slope angle of the flat transition zone is less than 40 degrees, and the stably developing stratum is a limestone layer.

In a possible embodiment, the step of obtaining the pile hole cleanliness parameter based on the compressed gas supply amount, the weight-on-bit, the sediment discharge amount and the pile hole diameter comprises:

calculating and solving the pile hole cleanliness parameter according to the following formula;

wherein K is the pile hole cleanliness parameter, Q is the compressed gas input, F is the drilling pressure, M is the sediment output, and D is the pile hole diameter.

In one possible embodiment, the step of analyzing the composition of the oversize product and determining the first threshold value comprises:

if the weight percentage of the sand and the stone in the oversize products is more than or equal to 40 percent, the first threshold value is 30 to 40;

if the weight percentage of the sand and the stone in the oversize material is less than 40%, the first threshold value is 50-70.

In a possible implementation manner, the method for digitally identifying drilling data of the deep-water ultra-long pile of the cable-stayed bridge further includes:

and reducing the rotating speed of the gas-lift reverse circulation drilling machine under the condition that the pile hole cleanliness parameter is smaller than a first threshold value.

In a possible implementation manner, the method for digitally identifying drilling data of the deep-water ultra-long pile of the cable-stayed bridge further includes:

the weight percentage of sand and stones in the oversize materials is less than 50 percent and more than or equal to 40 percent, and the rotating speed of the gas-lift reverse circulation drilling machine is controlled to be reduced by 30 percent;

and controlling the rotating speed of the gas-lift reverse circulation drilling machine to be reduced by 50 percent, wherein the weight percentage of sand and stone in the oversize materials accounts for more than or equal to 50 percent.

In one possible embodiment, the density and viscosity of the slurry fed into the pile holes is increased in the case where the oversize material contains sand in an amount greater than or equal to 40% by weight of the oversize material.

In a possible embodiment, before the step of obtaining the compressed gas supplement amount and the weight on bit of the gas lift reverse circulation drilling machine during the drilling operation, the method further comprises the following steps:

acquiring the depth of a liquid level and the diameter of a pile hole;

and determining the embedding depth of the pile casing based on the liquid level depth and the diameter of the pile hole.

In a possible embodiment, the step of determining the casing embedding depth based on the liquid level depth and the pile hole diameter comprises the following steps:

calculating the embedded depth of the pile casing according to the following formula;

H=h/N+1.5D

h is the pre-embedding depth of the pile casing, H is the liquid level depth, N is an adjusting parameter, the value of the adjusting parameter is 50-80, and D is the diameter of the pile hole.

According to a second aspect of the embodiment of the application, a digital recognition device for drilling data of deep water ultra-long piles of cable-stayed bridge is provided, which comprises:

the data detection unit is used for acquiring the depth, sound velocity, temperature and salinity of a sea area to be constructed and seabed coordinate information through an ocean sound velocity profile instrument;

a construction unit for constructing a seabed geomorphology map based on the depth, the speed of sound, the temperature and salinity, and the seabed coordinate information;

the system comprises an exploration unit, a control unit and a control unit, wherein the exploration unit is used for arranging a seismic exploration well group on the seabed and acquiring seabed seismic exploration information through the seismic exploration well group;

the selection unit is used for determining the drilling position based on the seabed landform image and the seabed seismic exploration information;

a drilling unit for drilling a pile hole by a gas lift reverse circulation drilling machine based on the drilling position;

the acquisition module is used for acquiring the compressed gas supplement amount, the drilling pressure and the pile hole diameter of the gas-lift reverse circulation drilling machine in the process of executing drilling operation;

the screening module is used for filtering the mixed slurry discharged through the drilled hole, and weighing the mass of oversize products as the sediment discharge amount;

the processing module is used for acquiring a pile hole cleanliness parameter based on the compressed gas supplement amount, the bit pressure, the sediment discharge amount and the diameter of the pile hole;

a threshold determination module to analyze a composition of the oversize material to determine a first threshold;

the adjusting module is used for increasing the amount of compressed air supplemented by the gas lift reverse circulation drill body under the condition that the pile hole cleanliness parameter is smaller than or equal to the first threshold value;

the adjusting module is further used for reducing the amount of compressed air supplemented by the gas lift reverse circulation drill body under the condition that the pile hole cleanliness parameter is larger than the first threshold value.

Compared with the prior art, the invention at least comprises the following beneficial effects: according to the digital identification method for the drilling data of the deep-water ultra-long pile of the cable-stayed bridge, provided by the invention, a seabed geomorphology map can be obtained by exploring a construction sea area through a marine sound velocity profile instrument, and seabed seismic exploration information can be obtained by performing seismic exploration on the seabed of the construction sea area; the drilling position is further determined by the oil seabed geomorphology map and seabed seismic exploration information, so that the collapse probability of the pile hole can be reduced; on the other hand can make the stake hole set up comparatively gently at the relief, and on the higher stratum of intensity, can ensure cable-stay bridge's intensity, simultaneously can be corresponding shorten drilling depth, do benefit to and reduce cable-stay bridge construction cost, shorten construction cycle.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a flowchart illustrating steps of a method for digitally identifying drilling data of a deep-water ultra-long pile of a cable-stayed bridge according to an embodiment of the present disclosure.

Fig. 2 is a schematic structural block diagram of a method for digitally identifying drilling data of a deep-water ultra-long pile of a cable-stayed bridge according to an embodiment of the present disclosure.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

As shown in fig. 1, according to a first aspect of the embodiments of the present application, a method for digitally identifying drilling data of a deep-water ultra-long pile of a cable-stayed bridge is provided, including:

step 101: and acquiring the depth, sound velocity, temperature, salinity and seabed coordinate information of the sea area to be constructed by the ocean sound velocity profile instrument. The depth, the sound velocity, the temperature, the salinity and the seabed coordinate information of the sea area to be constructed can be rapidly identified through the arrangement of the ocean sound velocity profile instrument.

Step 102: and constructing a seabed landform map based on the depth, the sound velocity, the temperature and the salinity and the seabed coordinate information. The landform image of the seabed can be identified through the depth, the sound velocity, the temperature and the salinity and the seabed coordinate information, and support is provided for the subsequent drilling position.

Step 103: and arranging a seismic exploration well group on the seabed, and acquiring seabed seismic exploration information through the seismic exploration well group. The seismic exploration information of the seabed is further acquired through the opening of the seismic exploration well group, and the stratum information of the seabed can be acquired from the depth domain of the seabed.

Step 104: determining a borehole location based on the seabed geomorphologic map and the seabed seismic survey information. Determining the drilling positions from the seabed landform information and the seabed depth domain respectively through the seabed landform image and the seabed seismic exploration information, so that the collapse probability of pile holes can be reduced on one hand; on the other hand can make the stake hole set up comparatively gently at the relief, and on the higher stratum of intensity, can ensure cable-stay bridge's intensity, simultaneously can be corresponding shorten drilling depth, do benefit to and reduce cable-stay bridge construction cost, shorten construction cycle.

Step 105: drilling a pile hole through a gas lift reverse circulation drilling machine based on the drilling position;

step 106: and acquiring the compressed gas supplement amount, the drilling pressure and the pile hole diameter of the gas-lift reverse circulation drilling machine in the process of executing the drilling operation. The compressed air is supplemented by the air compressor in the operation process of the gas lift reverse circulation drilling machine, so that the supplement amount of the compressed air can be obtained by counting the output amount of the compressed air of the air compressor; weight on bit refers to the weight of the drill string applied to the drill bit, typically 40% -60% of the bit's own weight, and this data is available based on the operating conditions of the gas lift reverse circulation drilling rig.

Step 107: and filtering the mixed slurry discharged through the drilling hole, and weighing the mass of oversize products to be used as the sediment discharge amount. Through filtering via drilling exhaust mixed slurry, can the filtering mix the mud in the slurry, mud can return to the stake hole after the sediment and play the guard action to stake hole pore wall, and the oversize thing of straining is the sediment, can know the sediment discharge amount through weighing to the sediment.

Step 108: and acquiring the pile hole cleanliness parameter based on the compressed gas feeding amount, the drilling pressure, the sediment discharging amount and the diameter of the pile hole. The pile hole cleanliness parameter can be calculated and obtained through four measurable parameters including compressed gas feeding amount, drilling pressure, sediment discharge amount and pile hole diameter, the pile hole cleanliness parameter can represent the discharge state of sediment in the pile hole, the pile hole cleanliness parameter indicates that the sediment in the pile hole is discharged more thoroughly, the pile hole cleanliness parameter indicates that the sediment in the pile hole is more thoroughly, the sediment in the pile hole is more less, and excessive sediment wraps up and holds the drill bit, so that the drilling efficiency of the pile hole can be influenced.

Step 109: the oversize composition is analyzed to determine a first threshold. The stratum type drilled by the drill bit at the current stage can be obtained by analyzing the components of oversize materials, the first threshold value is determined according to the stratum type, and then the operation state of the gas-lift reverse circulation drilling machine can be more accurately adjusted according to the pile hole cleanliness parameter and the first threshold value which are obtained in advance.

Step 110: and under the condition that the pile hole cleanliness parameter is less than or equal to the first threshold value, increasing the amount of compressed air supplemented by the gas lift reverse circulation drill body. When the pile hole cleanliness parameter is less than or equal to the first threshold, it indicates that more sediments exist in the pile hole, and therefore, the amount of the compressed air to be supplemented should be increased to improve the slag removal effect.

Step 111: and reducing the amount of compressed air supplemented by the gas lift reverse circulation drill body under the condition that the pile hole cleanliness parameter is greater than the first threshold value. Under the condition that the pile hole cleanliness parameter is greater than the first threshold value, the sediment removal effect in the pile hole is better, the compressed gas supplement amount can be reduced at the moment, the integral density of slurry in the pile hole is improved, the pile hole can be better protected, the probability of collapse hole phenomenon is reduced, and the success rate of pile hole drilling can be guaranteed.

According to the digital identification method for the drilling data of the deep-water ultra-long pile of the cable-stayed bridge, provided by the invention, a seabed geomorphology map can be obtained by exploring a construction sea area through a marine sound velocity profile instrument, and seabed seismic exploration information can be obtained by performing seismic exploration on the seabed of the construction sea area; the drilling position is further determined by the oil seabed geomorphology map and seabed seismic exploration information, so that the collapse probability of the pile hole can be reduced; on the other hand can make the stake hole set up comparatively gently at the relief, and on the higher stratum of intensity, can ensure cable-stay bridge's intensity, simultaneously can be corresponding shorten drilling depth, do benefit to and reduce cable-stay bridge construction cost, shorten construction cycle.

The invention provides a digital identification method for drilling data of a deep-water ultra-long pile of a cable-stayed bridge, which is characterized by acquiring and obtaining the compressed gas supplement amount, the drilling pressure and the diameter of a pile hole of a gas-lift reverse circulation drilling machine in the process of executing drilling operation; filtering the mixed slurry discharged by the drilling hole, weighing the mass of oversize products, and obtaining the discharge amount of sediments; based on compressed gas input amount, drilling pressure, sediment discharge amount and pile hole diameter, obtain pile hole cleanliness parameter, this pile hole cleanliness parameter can characterize the scarfing cinder effect in pile hole, and the numerical value of pile hole cleanliness parameter is higher, and then the scarfing cinder effect that explains the pile hole is better, can improve the efficiency that the pile hole creeped into this moment. And further, analyzing the components of oversize products to determine a first threshold, and under the condition that the pile hole cleanliness parameter is less than or equal to the first threshold, indicating that the pile hole has poor slag removal effect, more sediments possibly remain at the bottom of the pile, and the part of sediments or wrap the drill bit, so that the drilling efficiency is reduced, thereby increasing the compressed air amount supplemented by the gas lift reverse circulation drilling machine body, further reducing the density of slurry and air mixed slurry, and increasing the capacity of discharging the sediments, so as to reduce the sediment amount in the pile hole and improve the drilling efficiency. Under the condition that the pile hole cleanliness parameter is greater than the first threshold value, the sediment amount in the pile hole is smaller, and the compressed gas supplement amount can be reduced at the moment, so that the overall density of slurry in the pile hole is improved, the pile hole can be better protected, the probability of collapse hole phenomenon is reduced, and the success rate of pile hole drilling can be guaranteed.

In one possible embodiment, the step of determining the borehole location based on the seabed geomorphology map and the seabed seismic survey information comprises: determining a flat transition area through a seabed landform image; determining a stable development stratum on the seabed through seabed seismic exploration information; determining a drilling location on a stably developing formation on a flat transition zone; wherein the slope angle of the flat transition region is less than 40 degrees, and the stably developed stratum is a limestone layer.

In the embodiment, the area which simultaneously meets the requirements of a flat transition area and a stable development stratum is selected as a drilling position, so that the collapse probability of a pile hole can be reduced; on the other hand can make the stake hole set up comparatively gently at the relief, and on the higher stratum of intensity, can ensure cable-stay bridge's intensity, simultaneously can be corresponding shorten drilling depth, do benefit to and reduce cable-stay bridge construction cost, shorten construction cycle.

It can be understood that in the case that there is no area satisfying both the flat transition zone and the stably developing formation, the drilling position is determined in the flat transition zone, and the engineering quality is guaranteed by adjusting the depth of the drilling.

In one possible embodiment, the step of obtaining the pile hole cleanliness parameter based on the compressed gas supply amount, the weight on bit, the sediment discharge amount and the diameter of the pile hole comprises:

calculating and solving a pile hole cleanliness parameter according to the following formula;

wherein K is the pile hole cleanliness parameter, Q is the compressed gas input, F is the drilling pressure, M is the sediment output, and D is the pile hole diameter.

In the embodiment, a specific formula for calculating and obtaining the pile hole cleanliness parameter based on the compressed gas supplement amount, the bit pressure, the sediment discharge amount and the diameter of the pile hole is further provided, and the sediment removal state in the pile hole can be more accurately represented through the determination of the formula.

In the embodiment, the influence relationship of the compressed gas supplement amount, the bit pressure, the sediment discharge amount and the pile hole diameter on the numerical value of the pile hole cleanliness parameter is further determined through the determination of the formula, wherein the pile hole cleanliness parameter is in positive correlation with the compressed gas supplement amount and the sediment discharge amount, and the bit pressure and the pile hole diameter are in negative correlation with the pile hole cleanliness parameter.

It will be understood that the amount of compressed gas supplied may be in the form of an amount of compressed air supplied per unit time, and may be in the form of m³The bit pressure is usually 40% -60% of the self weight of the drill bit, and the maximum amount of the drill bit can not exceed 80% of the self weight of the drill bit, the sediment discharge amount can be the sediment amount produced in unit time, the unit is Kg, the unit of the diameter of a pile hole is m, and the unit time of the compressed gas supply amount and the unit time of the sediment discharge amount are the same, such as the compressed air supply amount in 1 hour and the sediment discharge amount in 1 hour.

In some examples, an apparatus for filtering a mixed slurry includes: the sedimentation tank sets up the support on the sedimentation tank, sets up at the weighing unit of support free end and sets up the screen cloth on the weighing unit, carries out filterable in-process to mixing the thick liquid, mixes the thick liquid and directly carries to the screen cloth on, and mud passes through the screen cloth and deposits in the sedimentation tank, and oversize thing then remains on the sieve, reads the testing result of weighing unit this moment and can learn the sediment discharge amount.

Further, a device for being directed at mixed thick liquid carries out filterable can also include vibrating motor, and vibrating motor connects in the screen cloth, and the screen cloth slope sets up, accomplishes the back of weighing to the oversize thing through the screen cloth, can open vibrating motor for the screen cloth shakes, in order to discharge the sediment on the screen cloth, is convenient for follow-up component to the sediment and carries out the analysis.

In one possible embodiment, the composition of the oversize product is analyzed and the step of determining the first threshold value comprises:

if the weight percentage of the sand and the stone in the oversize products is more than or equal to 40 percent, the first threshold value is 30 to 40;

if the weight percentage of the sand and the stone in the oversize material is less than 40%, the first threshold value is 50-70.

In this embodiment, when the weight percentage of the sand and the stone on the oversize material is greater than or equal to 40%, the first threshold value is 50 to 70, and the weight percentage of the sand and the stone on the oversize material is less than 40%, the first threshold value is 30 to 40. The larger the percentage of sand and stone accounting for the weight of oversize materials is, the wider the sand and stone accounting ratio in the stratum where the drill bit is located is, the larger the sand and stone accounting ratio is, the larger the value of the first threshold value is, so that the phenomenon of hole collapse caused by excessive compressed air supplement amount when the drill bit drills a sand layer is avoided, and the success rate of pile hole drilling is guaranteed.

In a possible implementation manner, the method for digitally identifying drilling data of the deep-water ultra-long pile of the cable-stayed bridge further includes: and reducing the rotating speed of the gas-lift reverse circulation drilling machine under the condition that the pile hole cleanliness parameter is smaller than a first threshold value.

The condition that the pile hole cleanliness parameter is smaller than the first threshold value shows that the drill bit is wrapped by more sediments at the bottom of the hole, the drilling efficiency of the drill bit is reduced, the friction area between the drill bit and the sediments is increased, the rotating speed of the gas lift reverse circulation drilling machine is reduced at the moment, the drill bit can be protected, the service life of the drill bit is prolonged, and the drilling efficiency cannot be influenced too much.

In a possible implementation manner, the method for digitally identifying drilling data of the deep-water ultra-long pile of the cable-stayed bridge further includes: the weight percentage of sand and stones in the oversize material is less than 50 percent and more than or equal to 40 percent, and the rotating speed of the gas lift reverse circulation drilling machine is controlled to be reduced by 30 percent; the weight percentage of sand and stone in the oversize material is more than or equal to 50%, and the rotating speed of the gas lift reverse circulation drilling machine is controlled to be reduced by 50%.

The weight percentage of the sand and the stone in the oversize material is less than 50 percent and more than or equal to 40 percent, which indicates that the drill bit is positioned in the stratum with a part of the sand and the stone, and the rotating speed of the gas lift reverse circulation drilling machine is reduced to avoid the hole collapse phenomenon.

The weight percentage of sand and stones in the oversize materials is more than or equal to 50%, which indicates that the stratum where the drill bit is located has more sand and stones, the drill bit is probably located in the sand layer, the rotating speed of the gas lift reverse circulation drilling machine is controlled to be reduced by 50%, and the phenomenon of hole collapse can be avoided.

In one possible embodiment, the density and viscosity of the slurry fed into the pile bore is increased in the case where the oversize material contains sand in an amount greater than or equal to 40% by weight of the oversize material.

Under the condition that the weight percentage of sand and stones in oversize materials is detected to be more than or equal to 40%, the density and viscosity of the slurry supplied into the pile hole are increased, so that the hole wall of the pile hole can be better protected through the slurry, and collapse of the pile hole can be avoided.

In a possible embodiment, before the step of obtaining the compressed gas supplement amount and the weight on bit of the gas lift reverse circulation drilling machine during the drilling operation, the method further comprises the following steps: acquiring the depth of a liquid level and the diameter of a pile hole; and determining the embedded depth of the pile casing based on the liquid level depth and the diameter of the pile hole.

In this technical scheme, further confirm the pre-buried degree of depth of casing through liquid level degree of depth and stake hole diameter, replace the mode of confirming the pre-buried degree of depth of casing according to work experience among the traditional art, can ensure to protect a section of thick bamboo and have sufficient pre-buried degree of depth, can avoid the stake hole to appear collapsing and collapse the hole.

In a possible embodiment, the step of determining the embedding depth of the casing based on the liquid level depth and the diameter of the pile hole comprises the following steps: calculating the embedded depth of the pile casing according to the following formula;

H=h/N+1.5D

h is the pre-buried depth of the pile casing, H is the liquid level depth, N is an adjusting parameter, and D is the diameter of the pile hole.

In this embodiment, a specific way of calculating and calculating the embedded depth of the casing is further provided, and the embedded depth of the casing is determined more accurately and reliably by the determination of the formula.

In one possible embodiment, the value of the manipulated variable is 50 to 80.

In the embodiment, the influence factor of the liquid level depth on the embedding depth is further determined by adjusting the value of the parameter to be 50-80, so that the embedding depth of the pile casing is more accurately and reliably determined.

As shown in fig. 2, according to a second aspect of the embodiments of the present application, there is provided a device for digitally recognizing drilling data of a deep-water ultra-long pile of a cable-stayed bridge, including:

the data detection unit 201 is used for acquiring the depth, sound velocity, temperature, salinity and seabed coordinate information of a sea area to be constructed through an ocean sound velocity profile instrument by the data detection unit 201;

the building unit 202, the building unit 202 is used for building a seabed landform map based on the depth, the sound velocity, the temperature and the salinity and the seabed coordinate information;

the exploration unit 203 is used for arranging a seismic exploration well group on the seabed and acquiring seabed seismic exploration information through the seismic exploration well group;

the selection unit 204, the selection unit 204 is used for determining the drilling position based on the seabed geomorphologic diagram and seabed seismic exploration information;

the drilling unit 205, the drilling unit 205 is used for drilling a pile hole through a gas lift reverse circulation drilling machine based on the drilling position;

the acquisition module 206 is used for acquiring the compressed gas supplement amount, the drilling pressure and the pile hole diameter of the gas lift reverse circulation drilling machine in the process of executing the drilling operation;

the screening module 207 is used for filtering the mixed slurry discharged through the drilled hole, and weighing the mass of oversize products as the sediment discharge amount;

the processing module 208, the processing module 208 is used for obtaining the pile hole cleanliness parameter based on the compressed gas supplement amount, the bit pressure, the sediment discharge amount and the diameter of the pile hole;

a threshold determination module 209, the threshold determination module 209 being configured to analyze the composition of the oversize product to determine a first threshold;

the adjusting module 210 is used for increasing the amount of compressed air supplemented by the gas lift reverse circulation drill body under the condition that the pile hole cleanliness parameter is less than or equal to a first threshold value;

the adjusting module 210 is further configured to reduce the amount of the compressed air supplied by the gas lift reverse circulation drill body when the pile hole cleanliness parameter is greater than the first threshold value.

According to the digital recognition device for the drilling data of the deep-water ultra-long pile of the cable-stayed bridge, the data detection unit 201 and the construction unit 202 are used for exploring a construction sea area through a marine sound velocity profile instrument, a sea bed landform graph can be obtained, the exploration unit 203 is used for conducting seismic exploration on the sea bed of the construction sea area, and sea bed seismic exploration information can be obtained; further, the drilling position is determined by selecting the oil seabed geomorphologic diagram of the unit 204 and seabed seismic exploration information, so that the collapse probability of the pile hole can be reduced; on the other hand can make the stake hole set up comparatively gently at the relief, and on the higher stratum of intensity, can ensure cable-stay bridge's intensity, simultaneously can be corresponding shorten drilling depth, do benefit to and reduce cable-stay bridge construction cost, shorten construction cycle.

The digital recognition device for the drilling data of the deepwater ultra-long pile of the cable-stayed bridge, provided by the invention, acquires and obtains the compressed gas supplement amount, the drilling pressure and the diameter of a pile hole of the gas-lift reverse circulation drilling machine in the process of executing drilling operation through the acquisition module 206; filtering the mixed slurry discharged through the drilled hole by a screening module 207, weighing the mass of oversize products, and obtaining the sediment discharge amount; through processing module 208 based on compressed gas input, weight on bit, sediment discharge amount and stake hole diameter, obtain stake hole cleanliness parameter, this stake hole cleanliness parameter can characterize the scarfing cinder effect in stake hole, and the numerical value of stake hole cleanliness parameter is higher, and then the scarfing cinder effect that explains the stake hole is better, can improve the efficiency that the stake hole creeped into this moment. Furthermore, the components of the oversize materials are analyzed by the threshold value determining module 209 to determine a first threshold value, and when the pile hole cleanliness parameter is smaller than or equal to the first threshold value, the adjusting module 210 indicates that the pile hole has a poor slag removal effect, and a large amount of sediments may remain at the bottom of the pile, and the part of sediments or wraps and holds the drill bit, so that the drilling efficiency is reduced, and therefore, the compressed air amount supplemented by the gas lift reverse circulation drilling machine body is increased, the density of slurry air mixed slurry is further reduced, the capacity of discharging the sediments is increased, the quantity of the sediments in the pile hole is reduced, and the drilling efficiency is improved. Under the condition that the pile hole cleanliness parameter is greater than the first threshold value, the sediment amount in the pile hole is smaller, and the compressed gas supplement amount can be reduced at the moment, so that the overall density of slurry in the pile hole is improved, the pile hole can be better protected, the probability of collapse hole phenomenon is reduced, and the success rate of pile hole drilling can be guaranteed.

In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.