CN107829723A - Rock body quality of mine Mining failure scope integral type detecting devices and detection method - Google Patents

Abstract

The invention discloses an integrated detection device and a detection method for the mining damage range of mine rock mass, and relates to the technical field of determination of the damage range of mine floor rock mass. It includes a plugging system, a guiding system, a leak detection system and a propulsion supply system. The leak detection system includes a connecting pipe and a changeover switch. As one of the main improvement points, the changeover switch includes a cylindrical chamber and is set in the cylindrical chamber. There are substrates, sliding valves and springs. The substrate is provided with water guide hole 2 and water guide hole 3. The sliding valve is provided with water guide hole 1. The sliding valve can slide freely inside the cylindrical chamber, and water guide hole 1 can be respectively Two independent water guiding channels are formed with the second water guiding hole and the third water guiding hole. The invention uses a single external operating system to supply water, reduces the number of external systems, reduces the number of pipes in the borehole to one, and solves the problem of multiple pipes winding in the borehole caused by too many external systems. The invention can improve the measurement efficiency and the accuracy of the measurement results.

Description

Integrated detection equipment and detection method for mine rock mass mining damage range

technical field

The invention relates to the technical field of measuring the damage range of mine floor rock mass, in particular to an integrated detection device and a detection method for the mining damage range of mine rock mass.

Background technique

The measurement of the damage range of rock mass on the roof and floor of mine is an important parameter to indicate the occurrence state of coal rock. It is a key basic parameter in the study of mine water prevention and control. Therefore, to study the formation of water-conducting channels in mining surrounding rocks, it is necessary to grasp the movement rules of rock strata and determine the damage range of roof and floor rock mass. Numerical simulation, empirical formula prediction, field measurement and other methods are usually used. However, due to the complex site conditions, to a certain extent, the numerical simulation cannot reflect the site conditions well, and the blindness of the empirical formula is relatively large. As the mining depth increases, the applicability of the empirical formula becomes worse and worse.

The technical deficiencies in the existing research reports on this aspect of the prior art are as follows: First, due to the excessive number of pipelines working at the same time in the existing observation equipment, especially during the propulsion process, the problem of pipeline entanglement in the borehole is prone to occur Secondly, the existing observation equipment generally requires two sets of detection pipelines, which are respectively pushed upwards, and there is a problem of fixing the inner and outer detection pipelines; finally, the traditional swelling capsules need to be filled with water separately, which is cumbersome and difficult to work. The amount is large, and the prior art fails to solve the above three problems simultaneously.

Contents of the invention

The object of the present invention is to provide an integrated detection device and detection method for mining damage range of rock mass in mines, which can improve measurement efficiency and accuracy of measurement results.

One of the tasks of the present invention is to provide an integrated detection device for mining damage range of rock masses in mines.

An integrated detection device for the mining damage range of mine rock mass, which includes a plugging system, a guiding system, a leak detection system and a propulsion supply system. The plugging system includes a type I plugging support pipe, a type II plugging Support tube, plugging capsule and capsule connecting tube, the plugging capsule includes a first plugging capsule and a second plugging capsule, a water leakage hole is arranged on the Type I plugging support tube, and the first plugging capsule The capsule is installed on the periphery of the leakage hole of the type I plugging support tube, and a certain swelling cavity is formed between the first plugging capsule and the type I plugging support tube; the second plugging capsule is installed on the On the type II plugging support tube, the capsule connecting tube is connected between the first plugging capsule and the second plugging capsule, and the inside of the type II plugging support tube is a sealed hollow pipe;

The leak detection system includes a connecting pipe and a transfer switch, the end of the Type I plugging support pipe is connected to the connecting pipe, the end of the connecting pipe is connected to the transfer switch, and the other end of the transfer switch is connected to the Type II plugging one end of the support tube,

The changeover switch includes a cylindrical chamber, a base body, a sliding valve and a spring are arranged in the cylindrical chamber, a water guide hole 2 and a water guide hole 3 are opened on the base body, and a water guide hole 3 is opened on the slide valve. There is a water guide hole 1, the sliding valve can slide freely inside the cylindrical chamber, and the water guide hole 1 can form two independent water guide channels with the water guide hole 2 and the water guide hole 3 respectively;

The guide system includes a guide cone, and the guide cone is connected to the other end of the Type II plugging support tube;

The propulsion supply system communicates with the Type I plugging support pipe, and is used for injecting water into the Type I plugging support pipe, displaying and recording various parameters.

As a preferred solution of the present invention, the propulsion supply system includes a water injection operation platform, a drilling rig and a drilling rod, one end of the drilling rod is connected to the drilling rig, and the other end is connected to the Type I plugging support pipe.

As another preferred solution of the present invention, the changeover switch is further provided with a groove portion for limiting the position of the spring.

Preferably, there are two water leakage holes on the Type I plugging support pipe.

Further, the length of the connecting pipe is 1 m.

Further, the Type I plugging support pipe and the connecting pipe are connected by thread.

Further, the guide cone is connected to the Type II plugging support pipe through a screw thread.

Another task of the present invention is to provide an integrated detection method for mining damage range of rock mass in mines.

An integrated detection method for mining damage range of rock mass in a mine, the detection system adopted includes: a plugging system, a guiding system, a leak detection system and a propulsion supply system;

The closure system includes a type I closure support tube, a type II closure support tube, a closure capsule and a capsule connection tube, the closure capsule includes a first closure capsule and a second closure capsule. The Type I plugging support tube is provided with leaking holes, the first plugging capsule is installed on the periphery of the leaking hole of the Type I plugging support tube, and the first plugging capsule and the Type I plugging support tube A certain swelling cavity is formed between them; the second plugging capsule is installed on the type II plugging support tube, and the capsule connecting tube is connected between the first plugging capsule and the second plugging capsule, and the The inside of the type II plugging support pipe is a sealed hollow pipe;

The leak detection system includes a connecting pipe and a transfer switch;

The changeover switch includes a cylindrical chamber, a base body, a sliding valve and a spring are arranged in the cylindrical chamber, a water guide hole 2 and a water guide hole 3 are opened on the base body, and a water guide hole 3 is opened on the slide valve. There is a water guide hole 1, the sliding valve can slide freely inside the cylindrical chamber, and the water guide hole 1 can form two independent water guide channels with the water guide hole 2 and the water guide hole 3 respectively;

The guide system includes a guide cone;

The propulsion supply system includes a water injection operation platform, a drilling rig and a drill pipe;

The detection method comprises the following steps in turn:

a Drilling holes, drilling several holes at specified angles successively into the roof or floor rock mass in the coal and rock roadway, the hole depth is 30-70m;

b Install the observation system, the end of the type I plugging support pipe is connected to one end of the connecting pipe, the other end of the connecting pipe is connected to the transfer switch, and the other end of the transfer switch is connected to the type II sealing One end of the plug support tube, the guide cone is connected to the other end of the type II plug support tube; the propulsion supply system is connected to the type I plug support tube, and the guide cone is connected to the other end of the type II plug support tube connect;

c Expand and block the capsule and measure the parameters of water leakage: open the water injection console, adjust the water pressure to 2.5MPa, inject water into the sealing system, and make the first sealing capsule and the second sealing capsule through the leakage hole and the capsule connecting pipe. The capsules are inflated separately to form a sealed space with the drilled hole. After the expansion of the two plugging capsules is completed, the water pressure of the water injection console is increased to 2.6MPa. At this time, the first water guide hole and the second water guide hole are connected. Inject water into the sealed space, and after the reading is stable, record the water leakage value L ₁ through the water injection console;

d Perform pressure relief and drainage on the plugging capsule: after the measurement of the water leakage is completed, close the water injection operation platform, so that the high-pressure water inside the plugging capsule is discharged through the capsule connecting pipe and the water leakage hole, and the pressure relief and drainage are completed;

e Advancing observation: After completing the pressure relief and drainage of all plugging capsules, use the drilling rig and drill pipe to advance the observation system to the next designated position, and repeat steps c and d.

Preferably, the working process of the transfer switch is:

In the initial state, under the action of the spring, the sliding valve is located at the left end, and the water guide hole 1, water guide hole 2, and water guide hole 3 are just closed by the substrate. When the external water source is injected into the substrate but the pressure of the fixed water source is not reached, the sliding valve moves to the right. However, the water guide hole is still closed by the base body wall; when the external water pressure reaches 2.6MPa, the pressure water pushes the sliding valve to continue to move to the right. At this time, the first water guide hole and the second water guide hole are connected to form a water guide channel. When the water pressure was greater than 3MPa, the sliding valve continued to move to the right, and now the water guiding hole one was connected to the water guiding hole three, and the sliding valve sealed the water guiding hole two.

Compared with the prior art, the present invention brings the following beneficial technical effects:

(1) Realized the water supply from a single external operating system, reduced the number of external systems, reduced the number of pipes in the borehole to one, and solved the problem of multi-pipeline winding in the borehole caused by too many external systems;

(2) Realize all swelling of all plugging capsules once filled with water, and complete the leak detection work, which reduces the operation steps and improves the measurement efficiency;

(3) The system is simple in structure, easy to operate, low in manufacturing cost and strong in stability.

(4) The design of the transfer switch avoids the damaging effect of the original cracks in the borehole due to the excessive pressure of the external water source during the detection process, that is, when the external water source is too high, the transfer switch can prevent the water flow from continuing to flow into the borehole and stop the water flow flow.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing:

Fig. 1 is the overall structure schematic diagram of observation system of the present invention;

Fig. 2 is a structural schematic diagram of a Type I plugging support tube and a plugging capsule in the plugging system of the present invention;

Fig. 3 is a structural schematic diagram of type II plugging support tube and plugging capsule in the plugging system of the present invention;

Fig. 4 is a schematic diagram of the structure of the capsule connecting pipe in the plugging system of the present invention;

Fig. 5 is a structural schematic diagram of a transfer switch in the leak detection system of the present invention;

Fig. 6 is a schematic diagram of the water leakage state of the transfer switch in the leakage detection system of the present invention;

Fig. 7 is a schematic diagram of the protection state of the transfer switch in the leakage detection system of the present invention;

In the figure, 1. rock formation, 2. drilling, 3. plugging capsule, 4. type II plugging support pipe, 5. connecting pipe, 6. water leakage hole, 7. transfer switch, 8. capsule connecting pipe, 9. Substrate, 10, sliding valve, 11, spring, 12, water guide hole one, 13, water guide hole two, 14, water guide hole three, 15, guide cone, 16, drill pipe, 17, drilling machine, 18, high pressure soft Pipe, 19, water injection console, 20, Type I plugging support pipe.

Detailed ways

The present invention proposes an integrated detection device and detection method for the mining damage range of mine rock mass. In order to make the advantages and technical solutions of the present invention clearer and clearer, the present invention will be described in detail below in conjunction with specific embodiments.

The present invention is an integrated detection equipment for mining and damage range of rock mass in mines, as shown in Fig. 1 to Fig. 4, which includes a plugging system, a guiding system, a leak detection system and a propulsion supply system, and the plugging system is shown in Fig. 2 to Fig. 4 for details. As shown in Figure 4, the closure system includes a Type I closure support tube 20, a Type II closure support tube 4, a closure capsule 3 and a capsule connecting tube 8; wherein the closure capsule includes a first closure capsule and a second closure capsule. There is one type I plugging support tube 20 for the plugging capsule, which is located at the bottom of the detection system, on which the plugging capsule 3 and the capsule connecting tube 8 are connected, and two water leakage holes 6 are respectively opened on both sides of the tube wall , the inside of which is a hollow pipe, and the number of type II plugging support pipe 4 is one, which is located at the front of the detection system, on which the plugging capsule 3 and the capsule connecting pipe 8 are connected, and the inside is a sealed hollow pipe; the first plugging The capsule and the second plugging capsule are respectively fixedly connected to the type I plugging support tube 20 or the type II plugging support tube 4, forming an inflating cavity with the two;

The number of capsule connecting pipe 8 is one, and its left and right ends are respectively connected with Type I plugging support tube 20 and Type II plugging support tube 4;

There is one guide cone 15, which is located at the top of the detection system and is threaded to the front end of the type II plugging support pipe 4;

The number of connecting pipes 5 is one, and the length is one meter, and the two ends of the connecting pipes are respectively connected with the thread and the changeover switch 7 and the type I plugging support pipe 20;

As the main improvement point of the present invention, the structure of the transfer switch and its working principle are shown in conjunction with Fig. 5 to Fig. 7 .

Connect the changeover switch 7 at the end of the connecting pipe, the changeover switch 7 includes a cylindrical chamber, a base body 9, a sliding valve 10 and a spring 11 are included in the cylindrical chamber, and a water guide hole is arranged on the base body 9 Two 13 and water guide hole three 14, the sliding valve 10 is cylindrical, has a water guide hole 12 on it, and the described sliding valve 10 utilizes the water source pressure to slide in the changeover switch 7, and the water guide hole 12 can be Respectively form two independent water guiding channels with the water guiding hole 2 13 and the water guiding hole 3 14 on the base body 9;

The course of action of changeover switch 7 is:

The changeover switch 7 is equipped with a sliding valve 10 inside. Under the action of the spring 11 in the initial state, the sliding valve 10 is located at the left end, and the first water guide hole 12, the second water guide hole 13 and the third water guide hole 14 are just closed by the base , when the external water source is injected into the matrix 9 but the pressure of the fixed water source is not reached, the sliding valve 10 moves to the right, but the water guide hole is still closed by the wall of the matrix 9; when the external water pressure reaches 2.6MPa, the pressure water pushes the sliding valve 10 to continue to the right At this time, the first water guide hole 12 and the second water guide hole 13 are connected to form a water guide channel. When the water pressure is greater than 3MPa, the sliding valve 10 continues to move to the right, and the first water guide hole 12 is connected at this time. Water guide hole 3 14, and sliding valve 10 seals water guide hole 2 13 (this design prevents excessive water pressure from causing damage to the borehole, that is, when the water pressure is too high, water guide hole 1 and water guide hole 3 conduct, And just close the water guide hole two, stop the excessive water pressure from flowing to the borehole, and the current stops flowing at this moment);

The drill pipe 16 is a hollow tubular structure, which is threaded to connect the type I plugging support pipe 20 to extend the detection equipment. The drill rig 17 pushes the test probe through the drill pipe 16 to reach the designated area of the borehole;

The guiding system includes a guiding cone, which is connected with the other end of the Type II plugging support tube;

The propulsion supply system communicates with the Type I plugging support pipe, and is used for injecting water into the Type I plugging support pipe, displaying and recording various parameters.

An integrated detection method for mining damage range of rock mass in a mine, specifically comprising the following steps:

(1) Exploration drilling 2: use a drilling rig to drill several holes 2 at specified angles successively in the roof or floor rock layer 1 in the coal and rock roadway, and the depth of the hole 2 varies from 30-70m;

(2) Install the observation system: clean up the gravel in the borehole 2, determine the number of sections each time the detection system advances according to the length of the borehole 2, and install the detection system in the borehole 2, through the drill pipe 16 and the high-pressure hose 18 Connect the drilling rig 17, the water injection console 19, etc. in turn, and use the drilling rig 17 and the drill pipe 16 to push the detection system to the designated position;

(3) Expand the plugging capsule 3 and measure the water leakage parameters: open the water injection console 19, adjust the water pressure to 2.5MPa, inject water into the test probe, and make the two plugging capsules through the leaking hole 6 and the capsule connecting pipe 8 3 swelling, forming a sealed space with the borehole 2. After the plugging capsule 2 is fully inflated, increase the pressure of the water 19 on the water injection operation table to 2.6MPa. At this time, the first water guide hole 12 is connected to the second water guide hole 13, and water is injected into the sealed space until the display is stable. After that, record the water leakage value L ₁ through the water injection console 19;

(4) Carry out pressure relief and drainage to the plugging capsule 3: after completing the measurement of the water leakage, close the water injection console 19, so that the internal high-pressure water of the plugging capsule 3 is discharged through the capsule connecting pipe 8 and the water leakage hole 6, and complete the pressure relief and drainage;

(5) Advancing observation: After completing the pressure relief and drainage of all the plugging capsules 3, use the drilling rig 17 and the drill pipe 16 to advance the detection system to the next designated position, and repeat steps (3) and (4).

The parts not mentioned in the present invention can be realized by adopting or referring to the prior art.

Claims (9)

1. An integrated detection equipment for mining damage range of mine rock mass, which includes a plugging system, a guiding system, a leak detection system and a propulsion supply system, characterized in that: The closure system includes a type I closure support tube, a type II closure support tube, a closure capsule and a capsule connection tube, the closure capsule includes a first closure capsule and a second closure capsule. The Type I plugging support tube is provided with leaking holes, the first plugging capsule is installed on the periphery of the leaking hole of the Type I plugging support tube, and the first plugging capsule and the Type I plugging support tube A certain swelling cavity is formed between them; the second plugging capsule is installed on the type II plugging support tube, and the capsule connecting tube is connected between the first plugging capsule and the second plugging capsule, and the The inside of the type II plugging support pipe is a sealed hollow pipe; The leak detection system includes a connecting pipe and a transfer switch, the end of the Type I plugging support pipe is connected to the connecting pipe, the end of the connecting pipe is connected to the transfer switch, and the other end of the transfer switch is connected to the Type II plugging one end of the support tube, The changeover switch includes a cylindrical chamber, a base body, a sliding valve and a spring are arranged in the cylindrical chamber, a water guide hole 2 and a water guide hole 3 are opened on the base body, and a water guide hole 3 is opened on the slide valve. There is a water guide hole 1, the sliding valve can slide freely inside the cylindrical chamber, and the water guide hole 1 can form two independent water guide channels with the water guide hole 2 and the water guide hole 3 respectively; The guide system includes a guide cone, and the guide cone is connected to the other end of the Type II plugging support tube; The propulsion supply system communicates with the Type I plugging support pipe, and is used for injecting water into the Type I plugging support pipe, displaying and recording various parameters. 2. The integrated detection equipment for mining damage range of mine rock mass according to claim 1, characterized in that: the propulsion supply system includes a water injection console, a drilling rig and a drill pipe, one end of the drill pipe is connected to the The drill rig is connected, and the other end is connected to the type I plugging support pipe. 3 . The integrated detection equipment for mining damage range of mine rock mass according to claim 1 , characterized in that: the transfer switch is also provided with a groove portion for limiting the position of the spring. 4 . 4. The integrated detection equipment for mining damage range of rock mass in mines according to claim 1, characterized in that there are two water leakage holes on the Type I plugging support pipe. 5 . The integrated detection equipment for mining damage range of mine rock mass according to claim 1 , characterized in that: the length of the connecting pipe is 1 m. 6. The integrated detection equipment for mining damage range of mine rock mass according to claim 1, characterized in that: the type I plugging support pipe and the connecting pipe are connected by threads. 7. The integrated detection equipment for mining and damage range of rock mass in mines according to claim 1, characterized in that: the guide cone is connected to the Type II plugging support pipe through threads. 8. An integrated detection method for the mining damage range of a mine rock mass, characterized in that the detection system used includes: a plugging system, a guiding system, a leak detection system and a propulsion supply system; The closure system includes a type I closure support tube, a type II closure support tube, a closure capsule and a capsule connection tube, the closure capsule includes a first closure capsule and a second closure capsule. The Type I plugging support tube is provided with leaking holes, the first plugging capsule is installed on the periphery of the leaking hole of the Type I plugging support tube, and the first plugging capsule and the Type I plugging support tube A certain swelling cavity is formed between them; the second plugging capsule is installed on the type II plugging support tube, and the capsule connecting tube is connected between the first plugging capsule and the second plugging capsule, and the The inside of the type II plugging support pipe is a sealed hollow pipe; the leak detection system includes a connecting pipe and a switch; The changeover switch includes a cylindrical chamber, a base body, a sliding valve and a spring are arranged in the cylindrical chamber, a water guide hole 2 and a water guide hole 3 are opened on the base body, and a water guide hole 3 is opened on the slide valve. There is a water guide hole 1, the sliding valve can slide freely inside the cylindrical chamber, and the water guide hole 1 can form two independent water guide channels with the water guide hole 2 and the water guide hole 3 respectively; The guide system includes a guide cone; The propulsion supply system includes a water injection operation platform, a drilling rig and a drill pipe; The observation method includes the following steps in turn: a Drilling holes, drilling several holes at specified angles successively into the roof or floor rock mass in the coal and rock roadway, the hole depth is 30-70m; b Install the detection system, the end of the type I plugging support pipe is connected to one end of the connecting pipe, the other end of the connecting pipe is connected to the transfer switch, and the other end of the transfer switch is connected to the type II sealing One end of the plug support tube, the guide cone is connected to the other end of the type II plug support tube; the propulsion supply system is connected to the type I plug support tube, and the guide cone is connected to the other end of the type II plug support tube connect; c Expand and block the capsule and measure the parameters of water leakage: open the water injection console, adjust the water pressure to 2.5MPa, inject water into the sealing system, and make the first sealing capsule and the second sealing capsule through the leakage hole and the capsule connecting pipe. The capsules are inflated separately to form a sealed space with the drilled hole. After the expansion of the two plugging capsules is completed, the water pressure of the water injection console is increased to 2.6MPa. At this time, the first water guide hole and the second water guide hole are connected. Inject water into the sealed space, and after the reading is stable, record the water leakage value L ₁ through the water injection console; d Perform pressure relief and drainage on the plugging capsule: after the measurement of the water leakage is completed, close the water injection operation platform, so that the high-pressure water inside the plugging capsule is discharged through the capsule connecting pipe and the water leakage hole, and the pressure relief and drainage are completed; e Advancing observation: After completing the pressure relief and drainage of all the plugged capsules, use the drilling rig and drill pipe to advance the detection system to the next designated position, and repeat steps c and d. 9. The integrated detection method for mining damage range of rock mass in a mine according to claim 8, characterized in that: the working process of the transfer switch is: In the initial state, under the action of the spring, the sliding valve is located at the left end, and the water guide hole 1, water guide hole 2, and water guide hole 3 are just closed by the substrate. When the external water source is injected into the substrate but the pressure of the fixed water source is not reached, the sliding valve moves to the right. But the water guide hole is still closed by the base body wall; when the external water pressure reaches 2.6MPa, the pressure water pushes the sliding valve to continue to move to the right. At this time, the first water guide hole and the second water guide hole are connected to form a water guide channel. When the water pressure was greater than 3MPa, the sliding valve continued to move to the right, and now the water guiding hole one was connected to the water guiding hole three, and the sliding valve sealed the water guiding hole two.