阅读说明：本技术 一种管棚钻头以及软土条件下管棚施工方法 (Pipe shed drill bit and pipe shed construction method under soft soil condition ) 是由 文涛 李攀 丁兴 季杨 李日升 肖佳迪 徐方宁 邵梦德 邱伟 李斐斐 廖裕海 于 2019-11-14 设计创作，主要内容包括：本发明公开了一种管棚钻头以及软土条件下管棚施工方法,所述管棚钻头包括管棚本体以及若干钻齿,所述钻齿的一端连接于所述管棚本体上,另一端向管棚本体的端部延伸并延伸出所述管棚本体的端部。本发明通过在管棚本体的前端设置若干钻齿,使得在软土条件下使用管棚时,可以直接采用具有钻齿的管棚作为钻头,这样在钻孔完成后无需将钻头取出,避免了在钻管取出的过程中发生塌孔的问题,提高了施工的安全性。(The invention discloses a pipe shed drill bit and a pipe shed construction method under the condition of soft soil. According to the invention, the drill teeth are arranged at the front end of the pipe shed body, so that the pipe shed with the drill teeth can be directly used as a drill bit when the pipe shed is used under a soft soil condition, the drill bit does not need to be taken out after drilling is finished, the problem of hole collapse in the process of taking out the drill pipe is avoided, and the construction safety is improved.)

1. The utility model provides a pipe shed drill bit, its characterized in that, it includes pipe shed body and a plurality of brill tooth, the one end of boring the tooth connect in on the pipe shed body, the other end extends and extends to the tip of pipe shed body.

2. The pipe shed drill bit of claim 1, wherein the plurality of drill teeth are evenly circumferentially disposed on the pipe shed body.

3. The pipe shed drill bit of claim 1, wherein the drill teeth comprise a connecting portion connected to the pipe shed body and a cutting portion connected to the connecting portion, and wherein an end of the cutting portion not connected to the connecting portion is an inclined surface.

4. A method of constructing a pipe shed under soft soil conditions, the method of any one of claims 1 to 3 being applied to the shed, the method comprising:

constructing a guide wall: arranging a guide wall at a soft soil to-be-constructed position, and guiding through the guide wall;

drilling and jacking into a pipe shed: connecting a pipe shed drill bit with a pipe shed, assembling the pipe shed on a drilling machine, driving the pipe shed to drill a soft soil construction position through the drilling machine and jacking the soft soil construction position into the pipe shed;

grouting: and placing a plurality of reinforcement cages and grouting pipes in the pipe shed so as to perform grouting in the pipe shed through the grouting pipes.

5. The method for constructing the pipe shed under the soft soil condition according to claim 4, wherein the pipe shed comprises a plurality of steel flower pipes which are connected end to end through screw threads, and the drill bit of the pipe shed is positioned at the front end of the foremost steel flower pipe.

6. The method for constructing the pipe shed under the soft soil condition according to claim 5, wherein a plurality of through holes are formed in the steel perforated pipe, and the through holes are arranged in a quincunx shape.

7. The method for constructing the pipe shed under the soft soil condition according to claim 4, wherein a plurality of reinforcement cages are arranged at intervals along the extension direction of the pipe shed, and the distance between any two adjacent reinforcement cages is equal.

8. The method for constructing the pipe shed under the soft soil condition according to claim 4, wherein a sensor is arranged in the pipe shed drill bit, and the setting angle of the pipe shed drill bit is obtained through the sensor so as to adjust the angle of the pipe shed drill bit according to the setting angle.

Technical Field

The invention relates to the technical field of engineering construction, in particular to a pipe shed drill bit and a pipe shed construction method under a soft soil condition.

Background

At present, in long pipe shed construction, steel perforated pipes parallel to ramp roads are driven into the excavated sections of tunnels, and then cement grouting is performed into the steel perforated pipes so as to achieve the effect of supporting surrounding rocks and soil. However, under the condition of soft soil, the pipe construction is generally applicable to drilling by a drilling machine, and after the drill pipe is drilled and withdrawn, the steel perforated pipe is driven in, so that the construction process is complicated, the construction speed is slow, and the hole collapse phenomenon is easy to occur in the process of taking out the drill pipe.

Disclosure of Invention

The invention aims to solve the technical problem that a pipe shed drill bit and a pipe shed construction method under a soft soil condition are provided to solve the problem that the pipe shed construction under the soft soil condition is easy to collapse.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the utility model provides a pipe shed drill bit, its includes pipe shed body and a plurality of brill tooth, the one end of boring the tooth connect in on the pipe shed body, the other end extends and extends to the tip of pipe shed body.

The pipe shed drill bit, a plurality of brill teeth along circumference evenly arrange in on the pipe shed body.

The pipe shed drill bit, the brill tooth includes connecting portion and cutting part, connecting portion connect in on the pipe shed body, the cutting part connect in on the connecting portion, and the cutting part do not with the one end that connecting portion are connected is the inclined plane.

A pipe shed construction method under a soft soil condition applies any one of the pipe shed drill bits, and the method comprises the following steps:

constructing a guide wall: arranging a guide wall at a soft soil to-be-constructed position, and guiding through the guide wall;

drilling and jacking into a pipe shed: connecting a pipe shed drill bit with a pipe shed, assembling the pipe shed on a drilling machine, driving the pipe shed to drill a soft soil construction position through the drilling machine and jacking the soft soil construction position into the pipe shed;

grouting: and placing a plurality of reinforcement cages and grouting pipes in the pipe shed so as to perform grouting in the pipe shed through the grouting pipes.

The pipe shed construction method under the soft soil condition is characterized in that the pipe shed comprises a plurality of steel flower pipes which are connected end to end through screw threads, and the pipe shed drill bit is located at the front end of the foremost steel flower pipe.

The pipe shed construction method under the soft soil condition is characterized in that a plurality of through holes are formed in the steel perforated pipe and are arranged in a quincunx mode.

According to the pipe shed construction method under the soft soil condition, the plurality of reinforcement cages are arranged at intervals along the extension direction of the pipe shed, and the distance between any two adjacent reinforcement cages is equal.

According to the pipe shed construction method under the soft soil condition, a sensor is arranged in the pipe shed drill bit, and the setting angle of the pipe shed drill bit is obtained through the sensor, so that the angle of the pipe shed drill bit can be adjusted according to the setting angle.

Has the advantages that: compared with the prior art, the invention provides a pipe shed drill bit and a pipe shed construction method under the condition of soft soil. According to the invention, the drill teeth are arranged at the front end of the pipe shed body, so that the pipe shed with the drill teeth can be directly used as a drill bit when the pipe shed is used under a soft soil condition, the drill bit does not need to be taken out after drilling is finished, the problem of hole collapse in the process of taking out the drill pipe is avoided, and the construction safety is improved.

Drawings

Fig. 1 is a perspective view of a pipe shed drill bit provided by the present invention.

Fig. 2 is a schematic view of a pipe shed drill provided by the present invention.

Fig. 3 is a schematic structural view of another perspective of the pipe shed drill bit provided by the present invention.

Fig. 4 is a schematic structural diagram of a steel perforated pipe of the pipe shed drill bit provided by the invention.

Fig. 5 is a schematic structural diagram of a reinforcement cage of the pipe shed drill bit provided by the invention.

Fig. 6 is a construction flow chart of the pipe shed construction method under the soft soil condition provided by the invention.

Detailed Description

The invention provides a pipe shed drill bit and a pipe shed construction method under soft soil conditions, and in order to make the purpose, technical scheme and effect of the invention clearer and clearer, the invention is further described in detail below by referring to the attached drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It should also be noted that the same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The invention will be further explained by the description of the embodiments with reference to the drawings.

The invention provides a pipe shed drill bit, which comprises a pipe shed body 10 and a plurality of drill teeth 20, wherein the drill teeth 20 are arranged on the pipe shed body 10 at intervals, one end of each drill tooth 20 is connected to the pipe shed body 10, and the other end of each drill tooth 20 extends towards the end part of the pipe shed body 10 and extends out of the end part of the pipe shed body 10, as shown in figures 1-3. That is, one end of the drill tooth 20 protrudes out of the pipe shed body 10, so that the drill tooth 20 is firstly in contact with a construction area during the use of the drill bit, so as to increase the destructive power of the drill bit. In addition, the pipe shed body 10 is the cylinder structure, a plurality of drill teeth 20 along circumference arrange with on the pipe shed body 10 to the equidistance between two arbitrary adjacent drill teeth 20 equals, can make every drill tooth 20 atress even like this, avoids damaging because of the drill bit that certain drill tooth 20 atress too big causes, and can't accomplish drilling work.

Further, a plurality of drill teeth 20 mounting positions can be arranged on the pipe shed body 10, the drill teeth 20 mounting positions correspond to the drill teeth 20 one by one, and each drill tooth 20 is welded to the drill tooth 20 mounting position corresponding to the drill tooth 20. The installation position of the drill tooth 20 can be obliquely arranged relative to the pipe shed body 10, that is, the installation direction of the drill tooth 20 intersects with the section of the pipe shed body 10 at the installation position of the drill tooth 20, wherein the section is a section formed by splitting the pipe shed body 10 along the central axis direction of the pipe shed body 10 by taking the diameter corresponding to the installation position of the pipe shed body 10 at which the drill tooth 20 is arranged as the section line. Thus, when the drill teeth 20 are installed at the installation position of the drill teeth 20, the drill teeth 20 can be inclined relative to the pipe shed body 10, and the destructive force of the drill teeth 20 is further improved.

Further, as shown in fig. 1 to 3, the drill teeth 20 include a connecting portion 21 and a cutting portion 22, the connecting portion 21 is connected to the pipe shed body 10, one end of the cutting portion 22 is connected to the connecting portion 21, and the other end extends out of the pipe shed body 10. The one end that cutting portion 22 is not connected with connecting portion 21 is the inclined plane, the one end on inclined plane with the terminal surface of pipe shed body 10 flushes, and the other end surpasss the terminal surface of pipe shed body 10, so that cutting portion 22 becomes the right triangle structure, and the hypotenuse of right triangle structure is as the cutting edge of cutting portion 22, when drilling the construction region to the soft worker condition, can increase the area of contact of brill tooth 20 with the construction region, and then improves the destructive power of drill bit. Certainly, in practical application, in order to facilitate the cooperation of pipe shed drill bit and other pipe sheds to use, the one end that pipe shed body 10 kept away from drilling tooth 20 is provided with the screw thread, with through the screw thread is connected with the pipe shed, can lay the length of pipe shed as required like this, and will the pipe shed drill bit is connected on the pipe shed of different length, has improved the flexibility that the pipe shed drill bit used. In addition, in one possible implementation manner of this embodiment, the number of the drill bits may be 5, the drill bits are blade-shaped, the thickness of the blade-shaped drill bit is 10mm, the cross section of the blade-shaped drill bit is a right trapezoid, the long base of the right trapezoid may be 80mm, the short base of the right trapezoid may be 40mm, and the height of the right trapezoid is 30 mm.

Based on the pipe shed drill bit, as shown in fig. 6, the embodiment further provides a pipe shed construction method under the condition of soft soil, and the method includes:

s10, construction of a guide wall: arranging a guide wall at a soft soil to-be-constructed position, and guiding through the guide wall;

s20, drilling and jacking into a pipe shed: connecting a pipe shed drill bit with a pipe shed, assembling the pipe shed on a drilling machine, driving the pipe shed to drill a soft soil construction position through the drilling machine and jacking the soft soil construction position into the pipe shed;

s30, grouting: and placing a plurality of reinforcement cages and grouting pipes in the pipe shed so as to perform grouting in the pipe shed through the grouting pipes.

This embodiment is through behind the construction guide wall, on being assembled and the rig after being connected pipe shed drill bit and pipe shed, drive the pipe shed drill bit through the rig and carry out the drilling to weak soil construction department to push into the pipe shed top when drilling, carry out the slip casting at last. The pipe shed is jacked when drilling is completed, the drill bit does not need to be taken out after drilling is completed, the problem of hole collapse in the process of taking out the drill pipe is avoided, and the construction safety is improved. In addition, the pipe shed is jacked in the process of drilling, the steps that the drill bit is taken out and the drill hole is cleaned after the drill bit is taken out are reduced, so that the working procedures of pipe shed construction are reduced, and the length of pipe shed construction is saved.

Further, in the step S10, the guide wall may be of a steel reinforced concrete structure, and the construction process of the guide wall may be an existing construction process, for example, the construction process of the guide wall may include processes of measuring lofting, hole guiding, erecting steel frame, installing guide pipes, retesting, fixing by welding steel bars, and pouring concrete.

Further, in step S20, the pipe shed includes a plurality of steel floral tubes connected end to end by screws, and the pipe shed drill bit is located at the front end of the foremost steel floral tube, and when drilling a hole in a soft soil to be constructed, the pipe shed drill bit first contacts with the to-be-constructed site. The steel perforated pipe is provided with a plurality of through holes which are arranged in a quincunx shape. In one implementation manner of this embodiment, as shown in fig. 4, the steel flower tube is a seamless steel tube with a diameter of 180mm and a tube wall thickness of 6mm, and the tube wall of the pipe shed is drilled with a hole diameter of 10mm and arranged in a quincunx shape, and the longitudinal and transverse intervals are 15 cm. The lengths of two adjacent steel floral tubes in the plurality of steel floral tubes are different, for example, the length of the first section of steel floral tube is 2m, the length of the second section of steel floral tube is 1m, and the length of the third section of steel floral tube is 2, and the steel floral tubes are alternately arranged in sequence. In addition, two adjacent steel floral tubes are connected through outer car screw thread and interior car screw thread, and the length of screw thread is greater than 150mm, can improve the joining force between two adjacent steel floral tubes like this, prevent to lead to the steel floral tube to drop because of the moment of torsion is too big, influence follow-up construction.

Further, be provided with the sensor in the pipe shed drill bit, through the sensor acquires the angle of establishing of beating of pipe shed drill bit to in order to establish the angle regulation pipe shed drill bit angle according to beating. The sensor can be connected to the terminal equipment, and the printing angle can be displayed by the terminal equipment, so that the angle of the pipe shed can be adjusted in real time according to the printing angle to ensure the precision of the pipe shed. The deviation of the angle generated in the process of laying the pipe shed due to human factors or mechanical factors is prevented when the super-long pipe shed is constructed.

Further, in step S30, the reinforcement cages and the grouting pipes may be inserted into the pipe shed synchronously, the reinforcement cages are arranged at intervals along the extending direction of the pipe shed, and the distance between any two adjacent reinforcement cages is equal (for example, the distance between any two adjacent reinforcement cages is 5m, etc.), so that the bending resistance of the pipe shed may be improved by disposing the reinforcement cages in the pipe shed. In addition, in a possible implementation manner of this embodiment, as shown in fig. 5, the reinforcement cage employs 4 main bars, and the 4 main bars may be connected by a fixing ring, wherein the 4 main bars may be uniformly arranged on the fixing ring along a circumferential direction, and each main bar is welded to the fixing ring through two symmetrically arranged welding points. The main muscle can be 25 mm's screw-thread steel, solid fixed ring can be the external diameter and is 89mm wall thickness and be 5 mm's steel pipe. In addition, in a possible implementation manner of this embodiment, the grouting material may use cement slurry, the grouting sequence is performed from a low hole site to a high hole site in principle, the whole hole is grouted at one time, and the steel perforated pipe is filled with the cement slurry after grouting.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.