阅读说明：本技术 水平定向钻正向动力扩孔施工模拟试验装置及其实验方法 (Simulation test device and method for forward power reaming construction of horizontal directional drill ) 是由 张启国 李子涵 石贤增 黄显怀 刘宁 常先睿 王钱泱 单庆婷 柳景超 张银松 章 于 2020-07-30 设计创作，主要内容包括：本发明公开了一种水平定向钻正向动力扩孔施工模拟试验装置,它包括实验模拟土体,实验模拟土体包括实验土箱以及调节实验土箱内土体压力的压力加载系统,压力加载系统设置在实验土箱上方,压力加载系统下方通过竖向加载活塞连接实验土箱,压力加载系统向下压缩活塞改变实验土箱中土的压力以达到不同土体的模拟情况,还包括钻进及回拖动力系统、正向扩孔钻进装置、泥浆循环系统、终端控制及数据处理系统以及设置在实验土箱内的压力传感器和湿度传感器。本发明在扩孔器后端连接泥浆马达最大限度的还原正向扩孔的施工过程,可通过该模拟装置,获取实际工况中泥浆配比参数、钻头选择、钻机扭矩、回拖力等系列施工控制参数,进而指导实际工程施工。(The invention discloses a simulation test device for forward power reaming construction of a horizontal directional drill, which comprises an experimental simulation soil body, wherein the experimental simulation soil body comprises an experimental soil box and a pressure loading system for adjusting the pressure of the soil body in the experimental soil box, the pressure loading system is arranged above the experimental soil box, the lower part of the pressure loading system is connected with the experimental soil box through a vertical loading piston, the pressure loading system downwards compresses the piston to change the pressure of the soil in the experimental soil box so as to achieve the simulation conditions of different soil bodies, and the simulation test device also comprises a drilling and back-dragging power system, a forward reaming drilling device, a slurry circulating system, a terminal control and data processing system, and a pressure sensor and a humidity sensor which are arranged in the experimental soil box. According to the invention, the rear end of the reamer is connected with a mud motor to reduce the construction process of forward reaming to the maximum extent, and series construction control parameters such as mud proportioning parameters, drill bit selection, drilling machine torque, back drag force and the like in actual working conditions can be obtained through the simulation device, so that actual engineering construction is guided.)

1. The utility model provides a directional forward power reaming construction simulation test device of level, it includes the experiment simulation soil body, the experiment simulation soil body is including experiment soil box and the pressure loading system who adjusts the interior soil body pressure of experiment soil box, pressure loading system sets up in experiment soil box top, and the experiment soil box is connected through vertical loading piston in the pressure loading system below, and the pressure loading system compresses the simulation condition of piston change experiment soil box in order to reach different soil bodies downwards, its characterized in that: the drilling and back-dragging power system, the forward reaming drilling device, the slurry circulating system, the terminal control and data processing system and the pressure sensor and the humidity sensor which are arranged in the experimental soil box are also included;

the drilling and back-dragging power system comprises a power device, an anchoring device and a front drill rod; the anchoring device fixes the power device on one side of the experimental soil box through a bolt; the power head of the power device is connected with a front drill rod, and the axis of the front drill rod is superposed with the axis of the simulated soil body on the same straight line;

the forward reaming drilling device comprises a reaming bit, a slurry motor and a rear drill rod; the reaming bit is connected with the front drill rod, the drilling and back-dragging power system drags the front drill rod so as to drive the reaming bit to move forwards, and the rear part of the reaming bit is connected with a mud motor; the rear side of the mud motor is connected with a rear drill rod through a universal joint;

the mud circulating system comprises a mud pool, a mud pump and a mud filter; the mud in the mud pit is pumped out by a mud pump and flows into the front drill rod through a mud pipe, the mud flows through a mud motor from the front drill rod to provide power for a mud motor, and the mud motor works to drive the reaming bit to rotate and then flows into the rear drill rod; the slurry flows into a slurry pipeline through a flange slurry outlet pipe and flows back to a slurry pool through a slurry filter, so that the recycling of the slurry is realized;

a mud flange compass is fixedly arranged at the joint of the experimental soil box and the rear drill rod and is fixedly connected with the experimental soil box through a flange bolt, and a mud outlet is arranged on the mud flange compass; one side of the rear drill rod is connected with a mud motor through a universal joint, and the other side of the rear drill rod penetrates through a mud flange compass and is fixed on the mud flange compass;

the terminal control and data processing system is connected with the drilling and back-dragging power system, the pressure sensor and the humidity sensor through the data receiver, is connected with the drilling and back-dragging power system to control the back-dragging force and the torque, and transmits data to the terminal to record and monitor; the device is connected with a pressure sensor and a humidity sensor to acquire the real-time condition of the soil body so as to achieve the soil body standard required by simulation, and the soil body pressure during the experiment is recorded.

2. The simulation test device for forward power reaming construction of the horizontal directional drill according to claim 1, characterized in that: the mud circulation system further comprises a grouting system; the grouting system comprises a mud flow meter and a mud valve, and the flow rate of mud is controlled by the mud valve and the mud flow meter in the circulation process of the mud; and the mud flow meter and the mud valve are connected with a terminal control and data processing system through a data receiver.

3. An experiment method of a simulation test device for forward power reaming construction of a horizontal directional drill is characterized in that: the method comprises the following steps:

s100, simulating a guide hole in the experimental soil box, initializing the power of a drilling and back-dragging power system, and respectively accessing a pressure sensor, a humidity sensor, a mud flowmeter, a mud valve and the drilling and back-dragging power system to a terminal control and data processing system through a data receiver;

s200, setting the configuration and optimization of slurry, and initializing a grouting system through a slurry flowmeter and a slurry valve according to the parameters of a slurry motor;

s300, starting a power device to drill a guide hole, and performing forward power reaming simulation;

s400, recording parameters of mud flow, mud motor working parameters, back-dragging force, soil body pressure, humidity and torque;

s500, changing one parameter of the mud flow, the pressure, the working parameter of the mud motor, the soil body pressure and the humidity, repeating the steps S200 to S400, and finally comparing to obtain the construction parameter.

Technical Field

The invention relates to the field of horizontal directional drilling construction, in particular to a simulation test device and an experiment method for forward power reaming construction of a horizontal directional drill.

Background

At present, reverse reaming is mainly carried out by back dragging of a drilling machine in construction, the drilling machine provides drilling and back dragging power, and the reaming torque is small, the reaming grade difference is small, the drilling efficiency is low and the accident rate is high. At present, no complete forward reaming test device exists in the market, so that corresponding construction parameters cannot be obtained before construction, and sufficient preparation is made before construction.

Disclosure of Invention

The invention aims to solve the problems and provide a simulation test device and a simulation test method for forward power reaming construction of a horizontal directional drill.

In order to achieve the purpose, the invention is realized by the following technical scheme: a simulation test device for forward power reaming construction of a horizontal directional drill comprises an experiment simulation soil body, wherein the experiment simulation soil body comprises an experiment soil box and a pressure loading system for adjusting the pressure of the soil body in the experiment soil box, the pressure loading system is arranged above the experiment soil box, the lower part of the pressure loading system is connected with the experiment soil box through a vertical loading piston, the pressure loading system compresses the piston downwards to change the pressure of the soil in the experiment soil box so as to achieve the simulation conditions of different soil bodies, and the simulation test device further comprises a drilling and back-dragging power system, a forward reaming drilling device, a slurry circulating system, a terminal control and data processing system, a pressure sensor and a humidity sensor which are arranged in the experiment soil box;

the drilling and back-dragging power system comprises a power device, an anchoring device and a front drill rod; the anchoring device fixes the power device on one side of the experimental soil box through a bolt; the power head of the power device is connected with a front drill rod, and the axis of the front drill rod is superposed with the axis of the simulated soil body on the same straight line;

the forward reaming drilling device comprises a reaming bit, a slurry motor and a rear drill rod; the reaming bit is connected with the front drill rod, the drilling and back-dragging power system drags the front drill rod so as to drive the reaming bit to move forwards, and the rear part of the reaming bit is connected with a mud motor; the rear side of the mud motor is connected with a rear drill rod through a universal joint;

the mud circulating system comprises a mud pool, a mud pump and a mud filter; the mud in the mud pit is pumped out by a mud pump and flows into the front drill rod through a mud pipe, the mud flows through a mud motor from the front drill rod to provide power for a mud motor, and the mud motor works to drive the reaming bit to rotate and then flows into the rear drill rod; the slurry flows into a slurry pipeline through a flange slurry outlet pipe and flows back to a slurry pool through a slurry filter, so that the recycling of the slurry is realized;

a mud flange compass is fixedly arranged at the joint of the experimental soil box and the rear drill rod and is fixedly connected with the experimental soil box through a flange bolt, and a mud outlet is arranged on the mud flange compass; one side of the rear drill rod is connected with a mud motor through a universal joint, and the other side of the rear drill rod penetrates through a mud flange compass and is fixed on the mud flange compass;

the terminal control and data processing system is connected with the drilling and back-dragging power system, the pressure sensor and the humidity sensor through the data receiver, is connected with the drilling and back-dragging power system to control the back-dragging force and the torque, and transmits data to the terminal to record and monitor; the device is connected with a pressure sensor and a humidity sensor to acquire the real-time condition of the soil body so as to achieve the soil body standard required by simulation, and the soil body pressure during the experiment is recorded.

Further, the mud circulation system also comprises a grouting system; the grouting system comprises a mud flow meter and a mud valve, and the flow rate of mud is controlled by the mud valve and the mud flow meter in the circulation process of the mud; and the mud flow meter and the mud valve are connected with a terminal control and data processing system through a data receiver.

In addition, the invention also discloses an experimental method of the forward power reaming construction simulation test device of the horizontal directional drill, which comprises the following steps:

s100, simulating a guide hole in the experimental soil box, initializing the power of a drilling and back-dragging power system, and respectively accessing a pressure sensor, a humidity sensor, a mud flowmeter, a mud valve and the drilling and back-dragging power system to a terminal control and data processing system through a data receiver;

s200, setting the configuration and optimization of slurry, and initializing a grouting system through a slurry flowmeter and a slurry valve according to the parameters of a slurry motor;

s300, starting a power device to drill a guide hole, and performing forward power reaming simulation;

s400, recording parameters of mud flow, mud motor working parameters, back-dragging force, soil body pressure, humidity and torque;

s500, changing one parameter of the mud flow, the pressure, the working parameter of the mud motor, the soil body pressure and the humidity, repeating the steps S200 to S400, and finally comparing to obtain the construction parameter.

In conclusion, the invention has the following beneficial effects:

(1) in the experimental device, the rear end of the reamer is connected with a mud motor to reduce the construction process of forward reaming to the maximum extent;

(2) the experimental soil box achieves different soil body pressures and humidity in experiments through a hydraulic loading system, and is closer to the field soil quality condition;

(3) the experiment simulation device can measure various parameters of forward reaming and provide reference for site construction;

(4) the forward reaming can be observed in the experimental simulation process and the construction condition can be met.

Drawings

FIG. 1 is a schematic view of a simulation test apparatus according to the present invention;

FIG. 2 is a logic block diagram of an experimental method of the test apparatus of the present invention.

Detailed Description

The invention will be further described in detail with reference to examples of embodiments shown in the drawings to which, however, the invention is not restricted.

The invention is explained in more detail below with reference to the drawing dimensions and the specific simulation data;

as further explained in connection with fig. 1: a horizontal directional drilling forward power reaming construction simulation test device comprises an experiment simulation soil body, wherein the experiment simulation soil body comprises an experiment soil box 22 and a pressure loading system 20 for adjusting the pressure of a soil body 23 in the experiment soil box, the pressure loading system 20 is arranged above the experiment soil box, the lower part of the pressure loading system 20 is connected with the experiment soil box through a vertical loading piston 21, the pressure loading system 20 downwards compresses the piston 21 to change the pressure of the soil in the experiment soil box 22 so as to achieve the simulation conditions of different soil bodies 23, the horizontal directional drilling forward power device further comprises a drilling and back-dragging power system, a forward drilling reaming device, a slurry circulating system, a terminal control and data processing system 18, a pressure sensor 16 and a humidity sensor 17 which are arranged in the experiment soil box;

the drilling and back-dragging power system comprises a power device 1, an anchoring device 2 and a front drill rod 3; the anchoring device 2 fixes the power device 1 on one side of the experimental soil box 22 through a bolt; the power head of the power device 1 is connected with the front drill rod 3, and the axis of the front drill rod 3 and the axis of the simulated soil body are superposed on the same straight line; the anchoring device 2 can comprise a bracket and a track (not shown in the figure), the power device 1 comprises a driving motor, a fixing bolt and a power head arranged on the track, and the bracket is firstly fixed at a corresponding position through the fixing bolt so that the whole system is kept stable; the power head is connected with the front drill rod 3, the axis of the drill rod and the axis of the simulated soil body are enabled to be superposed on a straight line, the driving motor is started, the power head on the track is driven to move forwards along the track direction under the working of the driving motor, so that a back dragging force is provided for the forward reaming process, and meanwhile, the power head drives the front drill rod to rotate so as to provide a torque in the forward reaming process;

the forward reaming drilling device comprises a reaming bit 4, a mud motor 5 and a rear drill rod 7; the reaming bit 4 is connected with the front drill rod 3, the drilling and back-dragging power system drags the front drill rod 3 so as to drive the reaming bit 4 to move forwards, and the rear part of the reaming bit 4 is connected with the mud motor 5; the rear side of the mud motor 5 is connected with a rear drill rod 7 through a universal joint 6;

the mud circulating system comprises a mud pool 12, a mud pump 15 and a mud filter 11; the mud in the mud pool 12 is pumped out by a mud pump 15 and flows into the front drill rod through a mud pipe, the mud flows through a mud motor 5 from the front drill rod 3 to provide power for a mud motor 5, the mud motor 5 works to drive a hole expanding drill bit 4 to rotate and work, and then the mud flows into the rear drill rod 7; the slurry flows into a slurry pipeline through a flange slurry outlet pipe 10 and flows back to a slurry pool through a slurry filter 11, so that the recycling of the slurry is realized;

a mud flange compass 8 is also fixedly arranged at the joint of the experimental soil box 22 and the rear drill rod 7, the mud flange compass 8 is fixedly connected with the experimental soil box 22 through a flange bolt 9, and a mud outlet 10 is arranged on the mud flange compass 8; one side of the rear drill rod 7 is connected with the mud motor 5 through the universal joint 6, and the other side of the rear drill rod passes through the mud flange compass 8 and is fixed on the mud flange compass 8; the mud circulating system also comprises a grouting system; the grouting system comprises a mud flow meter 13 and a mud valve 14, and the flow rate of mud is controlled by the mud valve 14 and the mud flow meter 13 in the circulation process of the mud; the mud flow meter 13 and the mud valve 14 are connected with a terminal control and data processing system 18 through a data receiver 19;

the terminal control and data processing system 18 is connected with the drilling and back-dragging power system, the pressure sensor 16 and the humidity sensor 17 through the data receiver 19, is connected with the drilling and back-dragging power system to control the back-dragging force and the torque and transmits data to the terminal for recording and monitoring; the pressure sensor 16 and the humidity sensor 17 are connected to acquire the real-time situation of the soil body so as to achieve the soil body standard required by simulation, and the soil body pressure during the experiment is recorded.

As further explained in connection with fig. 2: an experiment method of a simulation test device for forward power reaming construction of a horizontal directional drill comprises the following steps:

s100, simulating a guide hole in the experimental soil box, initializing the power of a drilling and back-dragging power system, and respectively accessing a pressure sensor, a humidity sensor, a mud flowmeter, a mud valve and the drilling and back-dragging power system to a terminal control and data processing system through a data receiver;

s200, setting the configuration and optimization of slurry, and initializing a grouting system through a slurry flowmeter and a slurry valve according to the parameters of a slurry motor;

s300, starting a power device to drill a guide hole, and performing forward power reaming simulation;

s400, recording parameters of mud flow, mud motor working parameters, back-dragging force, soil body pressure, humidity and torque;

s500, changing one parameter of the mud flow, the pressure, the working parameter of the mud motor, the soil body pressure and the humidity, repeating the steps S200 to S400, and finally comparing to obtain the construction parameter.

In the experimental device, the rear end of the reamer is connected with a mud motor to reduce the construction process of forward reaming to the maximum extent; the experimental soil box achieves different soil body pressures and humidity in experiments through a hydraulic loading system, and is closer to the field soil quality condition; the experiment simulation device can measure various parameters of forward reaming and provide reference for site construction; the forward reaming can be observed in the experimental simulation process and the construction condition can be met.

The above-mentioned embodiments are only for convenience of description, and are not intended to limit the present invention in any way, and those skilled in the art will understand that the technical features of the present invention can be modified or changed by other equivalent embodiments without departing from the scope of the present invention.