An auxiliary device and construction method for processing a buried measuring rod in a collapse verification hole

Abstract

The present invention discloses an auxiliary device and a construction method for processing a buried measuring rod of a collapse verification hole, wherein: the auxiliary device includes a right-angle pipeline, a high-pressure air pipe and a control valve. The high-pressure air pipe is arranged at the bottom of the right-angle pipeline, and the high-pressure air pipe is connected to a blower, and a control valve is arranged on the high-pressure air pipe; a groove-type coal baffle is slidably connected to the top pipeline of the right-angle pipeline, and a spring is arranged behind the groove-type coal baffle; a third support is arranged on the lower pipeline of the right-angle pipeline, and an adjustable handle is rotatably connected to the outside of the third support; a support plate and a safety chain are arranged below the third support. The present invention can blow out a part of the blocked pulverized coal, loosen the measuring rod in the drill hole, and then push and pull the measuring rod back and forth until the measuring rod is taken out of the drill hole; avoid the safety hazards brought by the measuring rod being buried in the medium, ensure the personal safety of the on-site outburst prevention workers and auxiliary personnel, is convenient to use, simple to operate, and easy to popularize.

Description

Technical Field

[0001] The present invention relates to a device for removing a measuring rod when the measuring rod for coal seam drilling construction is covered by collapsed materials, and particularly relates to an auxiliary device and a construction method for dealing with the buried measuring rod in a collapsed verification hole. Background Art

[0002] At present, the composite index method is mostly used to predict the outburst danger of coal roadway driving faces and coal mining faces. This method is realized by directly measuring the initial gas emission velocity index of the coal seam drilling holes in the mining and excavation faces using a CWY30 type drilling hole gas emission initial velocity detector; when constructing verification holes, the drilling holes should be arranged in the soft coal seams. The soft coal seams have the characteristics of soft coal quality, disordered bedding, severely damaged primary structure, and are distributed in layers or lenticular shapes; however, the drilling holes arranged in the soft coal seams have poor hole formation, are prone to falling coal powder and clogging, and are prone to hole collapse, which causes the measuring rods (gas chambers, hole sealers, intermediate rods, etc.) of the drilling hole gas emission initial velocity detector to be buried by coal powder and are not easy to take out, resulting in damage to the measuring instrument and even scrapping of the entire set of measuring instruments. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art and provide an auxiliary device and a construction method for dealing with the buried measuring rod in a collapsed verification hole, which can quickly take out the buried and discarded measuring rod, eliminate potential safety hazards, and ensure the personal safety of on-site outburst prevention workers and auxiliary personnel.

[0004] The technical solution adopted by the present invention to solve the technical problem is:

[0005] An auxiliary device for dealing with the buried measuring rod in a collapsed verification hole includes a right-angle pipe, a high-pressure air pipe, and a control valve. The bottom of the right-angle pipe is provided with a high-pressure air pipe, and the other end of the high-pressure air pipe is connected to a blower, and a control valve is provided on the high-pressure air pipe; a groove-type coal baffle is slidably connected to the top pipe of the right-angle pipe, and a spring is provided behind the groove-type coal baffle; a third support is provided on the lower pipe of the right-angle pipe, and an adjustable handle is rotatably connected to the outside of the third support; a positioning ring is provided below the third support, and a support plate and a safety chain are provided on one side of the positioning ring, and the positioning ring is located on the right-angle pipe above the high-pressure air pipe.

[0006] The groove-shaped coal baffle is composed of a panel, a semi-circular groove, and a second support. A circular through-hole is dug in the middle of the panel, and a semi-circular groove is arranged on the right side surface of the panel. The diameter of the semi-circular groove is the same as the inner diameter of the circular through-hole. A through-hole is dug in the middle of the right end surface of the semi-circular groove, and a second support is arranged outside the through-hole. A guide ring is arranged in the middle of the circular through-hole, and a connecting rod is arranged between the outer wall of the guide ring and the inner wall of the circular through-hole. The top pipe of the right-angle pipe sequentially passes through the second support, the semi-circular groove, and the guide ring, and a first support is arranged on the right-angle pipe on the right side of the second support. The spring is arranged on the right-angle pipe between the first support and the second support.

[0007] The guide ring and the second support are respectively slidably connected to the top pipe of the right-angle pipe, and the first support is fixedly connected to the top pipe of the right-angle pipe. The spring is sleeved on the top pipe of the right-angle pipe, and the left end of the spring is fixedly connected to the right end surface of the second support, and the right end of the spring is fixedly connected to the left end surface of the first support.

[0008] A displacement ring is rotatably connected to the outside of the third support, and a first cross plate is arranged on one side of the displacement ring. A through-hole is dug in the first cross plate, and a guide pipe is arranged above the through-hole. The adjustable handle is distributed in an L shape, and the upper part of the adjustable handle passes through the guide pipe and is fixed by a tightening bolt.

[0009] A second cross plate is arranged on the right side of the positioning ring, and a support plate is arranged above the right end of the second cross plate. The support plate is distributed in an inverted L shape, and a rectangular through-hole is dug in the top of the support plate. The right end of the second cross plate is hinged with a safety chain, and a hook is arranged at the right end of the safety chain.

[0010] S1: When the gas chamber of the measuring rod and the hole plugging device are buried by coal powder during the construction verification drilling in the coal mining face and the tunneling face, the on-site outburst prevention workers and auxiliary construction workers immediately stop the construction of the verification drilling, wear protective gloves and goggles, and keep the clothing tidy.

[0011] S2: First, remove the CWY30 type drilling gas emission initial velocity detector, the tail rod of the measuring rod, and the middle rod exposed outside the drilling hole mouth, and remove the pressure gauge connected to the hole plugging device to release the air in the hole plugging device and keep the air pressure balance inside and outside the drilling hole. Evacuate the personnel around the verification drilling and keep a certain safety distance.

[0012] S3: The outburst prevention worker moves the adjustable handle according to the position of the drilling hole mouth and his own height, so that the bottom of the adjustable handle is located at the front chest position of the outburst prevention worker, and finally fixes the adjustable handle to the first cross plate through the tightening bolt.

[0013] S4: The outburst prevention worker connects the right-angle pipe of the auxiliary device to the intermediate rod at the borehole orifice, aligns the grooved coal baffle with the orifice, and then fixes the auxiliary device to the nearby hydraulic support or wire mesh through the safety chain to ensure firm fixation.

[0014] S5: Start the fan. The outburst prevention worker holds the handle at the bottom of the adjustable handle and slowly opens the control valve to inject high-pressure air into the verification borehole, increasing the air pressure in the borehole, and then reciprocally push-pull the measuring rod.

[0015] S6: Repeatedly operate according to the steps in S5. Part of the blocked pulverized coal is blown out by the air pressure in the borehole, causing the measuring rod in the borehole to loosen.

[0016] S7: Close the control valve and stop injecting high-pressure air. The outburst prevention worker reciprocally push-pull the measuring rod to drag out the pulverized coal in the borehole until the measuring rod is taken out of the borehole.

[0017] S8: The outburst prevention worker checks the integrity of the buried measuring rod, air chamber, and hole packer. If the components of the measuring instrument are damaged, they need to be replaced in a timely manner, and then continue with the determination of the initial gas emission velocity index value of the borehole.

[0018] The positive and beneficial effects of the present invention are as follows:

[0019] 1. In the present invention, a high-pressure air pipe is provided at the bottom of the right-angle pipe, and a control valve is provided on the high-pressure air pipe. During use, the worker holds the adjustable handle and slowly opens the control valve to inject high-pressure air into the verification borehole, increasing the air pressure in the borehole, and then reciprocally push-pull the measuring rod. Part of the blocked pulverized coal is blown out by the air pressure in the borehole, causing the measuring rod in the borehole to loosen until the measuring rod is taken out of the borehole, avoiding the safety hazards brought by the measuring rod being buried in the medium and ensuring the personal safety of on-site outburst prevention workers and auxiliary personnel.

[0020] 2. In the present invention, a grooved coal baffle is provided on the top pipe of the right-angle pipe, and a spring is provided behind the baffle, avoiding the situation where pulverized coal splashes everywhere when high-pressure gas sweeps the borehole.

[0021] 3. In the present invention, a third support is provided on the lower pipe of the right-angle pipe, and an adjustable handle is rotatably connected to the third support. During use, the worker can adjust the position of the adjustable handle according to their height and construction environment, enabling the worker to hold the adjustable handle for construction.

[0022] 4. In the present invention, a support plate and a safety chain are provided on the positioning ring. During use, the auxiliary device is fixed to the nearby hydraulic support or wire mesh through the safety chain to ensure firm fixation. When not in use, the safety chain can be wound around the support plate, and the hook can be hooked in the rectangular through-hole at the top of the support plate, which is convenient to use and simple to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] . Figure 1 is a schematic structural diagram of the present invention;

[0024] Figure 2 is a schematic structural diagram of the groove-type coal baffle of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0025] The present invention will be further explained and described below in conjunction with the accompanying drawings:

[0026] Example 1: Refer to Figure 1 - Figure 2 , an auxiliary device for processing a buried measurement rod of a collapse verification hole, including a right-angle pipe 1, a high-pressure air pipe 12 and a control valve 13. The bottom of the right-angle pipe 1 is provided with a high-pressure air pipe 12, and the other end of the high-pressure air pipe 12 is connected to a fan, and a control valve 13 is provided on the high-pressure air pipe 12; a groove-type coal baffle is slidably connected to the top pipe of the right-angle pipe 1, and a spring 6 is provided behind the groove-type coal baffle; a third support 7 is provided on the lower pipe of the right-angle pipe 1, and an adjustable handle 10 is rotatably connected to the outside of the third support 7; a positioning ring 14 is provided below the third support 7, a support plate 16 and a safety chain 18 are provided on one side of the positioning ring 14, and the positioning ring 14 is located on the right-angle pipe 1 above the high-pressure air pipe 12.

[0027] The groove-type coal baffle is composed of a panel 3, a semi-circular groove 302 and a second support 303. A circular through-hole 301 is dug in the middle of the panel 3, and a semi-circular groove 302 is provided on the right side surface of the panel 3, and the diameter of the semi-circular groove 302 is the same as the inner diameter of the circular through-hole 301; a through-hole is dug in the middle of the right end surface of the semi-circular groove 302, and a second support 303 is fixedly connected to the outside of the through-hole. A guide ring 4 is provided in the middle of the circular through-hole 301, and a connecting rod 5 is provided between the outer wall of the guide ring 4 and the inner wall of the circular through-hole 301. The top pipe of the right-angle pipe 1 sequentially passes through the second support 303, the semi-circular groove 302 and the guide ring 4, and a first support 2 is provided on the right-angle pipe 1 on the right side of the second support 303. The spring 6 is provided on the right-angle pipe 1 between the first support 2 and the second support 303.

[0028] The guide ring 4 and the second support 303 are respectively slidably connected to the top pipe of the right-angle pipe 1, and the first support 2 is fixedly connected to the top pipe of the right-angle pipe 1; the spring 6 is sleeved on the top pipe of the right-angle pipe 1, and the left end of the spring 6 is fixedly connected to the right end surface of the second support 303, and the right end of the spring 6 is fixedly connected to the left end surface of the first support 2.

[0029] The outer part of the third support 7 is rotatably connected with a displacement ring 8, and a first cross plate 9 is arranged on one side of the displacement ring 8. A through hole is dug on the first cross plate 9, and a guide pipe is arranged above the through hole. The adjustable handle 10 is distributed in an L shape, and the upper part of the adjustable handle 10 penetrates through the guide pipe and is fixed by a tightening bolt 11.

[0030] A second cross plate 15 is arranged on the right side of the positioning ring 14, and a support plate 16 is arranged above the right end of the second cross plate 15. The support plate 16 is distributed in an inverted L shape, and a rectangular through hole 17 is dug on the top of the support plate 16. The right end of the second cross plate 15 is hinged with a safety chain 18, and a hook is arranged at the right end of the safety chain 18.

[0031] In the above description, the groove-type baffle can move along the top pipe of the right-angle pipe. When the spring is in the reset device, the distance between the panel and the left end of the right-angle pipe satisfies that the top pipe of the right-angle pipe can be inserted into the drilling orifice.

[0032] In the above description, the right-angle pipe is internally communicated with the high-pressure air duct.

[0033] In the above description, the positions of the guide ring and the second support correspond to each other left and right.

[0034] In the above description, the adjustable handle matches the guide pipe on the first cross plate.

[0035] In the above description, the third support is located above the lower pipe of the right-angle pipe, and the positioning ring is located at the lower position of the lower pipe of the right-angle pipe.

[0036] In the above description, the distance between the support plate and the right-angle pipe satisfies that the safety chain can be wound around the support plate.

[0037] In the above description, the first support is located at the rearmost end of the top pipe of the right-angle pipe.

[0038] In the above description, the first support, the second support and the third support are all sleeves matching the right-angle pipe, and an outer ring baffle is arranged outside one side of the sleeve. Among them, the outer ring baffle of the first support is on the left side of the sleeve, the outer ring baffle of the second support is on the right side of the sleeve, and the left end of the spring is connected with the outer ring baffle of the second support, and the right end of the spring is connected with the outer ring baffle of the first support; the outer ring baffle of the third support is at the bottom of the sleeve, and the displacement ring is located above the outer ring baffle of the third support and is rotatably connected with the sleeve of the third support. Embodiment

[0039] The construction method of the above-mentioned auxiliary device for processing the buried measurement rod of the collapse verification hole specifically includes the following steps:

[0040] S1: When the verification boreholes are being constructed in the coal mining face and the heading face, if the air chamber of the measuring rod and the hole packer are buried by coal powder, the on-site outburst prevention workers and auxiliary construction workers shall immediately stop the construction of the verification boreholes, put on protective gloves and goggles, and keep their clothing tidy.

[0041] S2: First, remove the CWY30 type initial gas emission velocity detector for boreholes, the tail rod of the measuring rod, and the intermediate rod exposed outside the borehole orifice, and remove the pressure gauge connected to the hole packer to release the air in the hole packer and keep the air pressure balanced inside and outside the borehole; evacuate the personnel around the verification borehole and maintain a certain safe distance.

[0042] S3: According to the position of the borehole orifice and his own height, the outburst prevention worker moves the adjustable handle (10) so that the bottom of the adjustable handle 10 is located at the front chest position of the outburst prevention worker, and finally fixes the adjustable handle 10 to the first cross plate 9 through the tightening bolt.

[0043] S4: The outburst prevention worker connects the right-angle pipe of the auxiliary device to the intermediate rod of the borehole orifice, aligns the groove type coal baffle with the orifice, and then fixes the auxiliary device to the nearby hydraulic support or steel mesh through the safety chain 18 to ensure firm fixation.

[0044] S5: Start the fan. The outburst prevention worker holds the handle at the bottom of the adjustable handle 10 and slowly opens the control valve 13 to inject high-pressure air into the verification borehole to increase the air pressure inside the borehole, and then push and pull the measuring rod back and forth.

[0045] S6: Repeatedly operate according to the steps in S5. Part of the blocked coal powder is blown out by the action of the air pressure inside the borehole, causing the measuring rod inside the borehole to loosen.

[0046] S7: Close the control valve 13 and stop injecting high-pressure air. The outburst prevention worker pushes and pulls the measuring rod back and forth to drag out the coal powder inside the borehole until the measuring rod is taken out of the borehole.

[0047] S8: The outburst prevention worker checks the integrity of the buried measuring rod, air chamber and hole packer. If the measuring instrument components are damaged, they need to be replaced in time, and then continue with the determination of the initial gas emission velocity index value of the borehole.

[0048] In actual construction, generally, the manual method is used first: other on-site personnel and the outburst prevention worker maintain a certain safe distance from the position of the verification borehole being processed. The on-site outburst prevention worker repeatedly pushes and pulls the rod body of the measuring rod by hand to make it loose inside the borehole until the measuring rod is taken out of the borehole; if the manual method fails, immediately use this auxiliary device and construction method for treatment.

[0049] In the above description, by setting the groove type coal baffle and the spring, the situation of coal powder splashing during construction is avoided, playing a certain role in blocking and buffering.

[0050] By injecting high-pressure air into the verification borehole, the present invention enhances the air pressure in the borehole, which can blow out some of the blocked pulverized coal, causing the measuring rod in the borehole to become loose. Then, the measuring rod is pushed and pulled back and forth until it is removed from the borehole. This avoids the safety hazards brought about by the measuring rod being buried in the coal seam, ensures the personal safety of on-site outburst prevention workers and auxiliary personnel, is convenient to use, simple to operate, and easy to promote.

Claims

1. An auxiliary device for processing a buried measuring rod of a collapse verification hole, comprising a right-angle pipe (1), a high-pressure air pipe (12) and a control valve (13). It is characterized in that: The bottom of the right-angle pipe (1) is provided with a high-pressure air pipe (12), and the other end of the high-pressure air pipe (12) is connected to a fan, and a control valve (13) is arranged on the high-pressure air pipe (12); a grooved coal baffle is slidably connected to the top pipe of the right-angle pipe (1), and a spring (6) is arranged behind the grooved coal baffle; a third support (7) is arranged on the lower pipe of the right-angle pipe (1), and an adjustable handle (10) is rotatably connected to the outside of the third support (7); a positioning ring (14) is arranged below the third support (7), and a support plate (16) and a safety chain (18) are arranged on one side of the positioning ring (14), and the positioning ring (14) is located on the right-angle pipe (1) above the high-pressure air pipe (12); the grooved coal baffle is composed of a panel (3), a semi-circular groove (302) and a second support (303), a circular through hole (301) is dug in the middle of the panel (3), a semi-circular groove (302) is arranged on the right side surface of the panel (3), and the diameter of the semi-circular groove (302) is the same as the inner diameter of the circular through hole (301); a through hole is dug in the middle of the right end surface of the semi-circular groove (302), and a second support (303) is arranged outside the through hole, a guide ring (4) is arranged in the middle of the circular through hole (301), and a connecting rod (5) is arranged between the outer wall of the guide ring (4) and the inner wall of the circular through hole (301), the top pipe of the right-angle pipe (1) sequentially penetrates through the second support (303), the semi-circular groove (302) and the guide ring (4), and a first support (2) is arranged on the right-angle pipe (1) on the right side of the second support (303), and the spring (6) is arranged on the right-angle pipe (1) between the first support (2) and the second support (303); a displacement ring (8) is rotatably connected to the outside of the third support (7), and a first cross plate (9) is arranged on one side of the displacement ring (8), a through hole is dug in the first cross plate (9), and a guide pipe is arranged above the through hole, the adjustable handle (10) is distributed in an L shape, and the upper part of the adjustable handle (10) penetrates through the guide pipe and is fixed by a tightening bolt (11); a second cross plate (15) is arranged on the right side of the positioning ring (14), and the support plate (16) is arranged above the right end of the second cross plate (15), the support plate (16) is distributed in an inverted L shape, and a rectangular through hole (17) is dug in the top of the support plate (16), the right end of the second cross plate (15) is hinged with the safety chain (18), and a hook is arranged at the right end of the safety chain (18); during use, the auxiliary device is fixed to a nearby hydraulic support or steel mesh through the safety chain to ensure firm fixation; when not in use, the safety chain is wound around the support plate, and the hook is hooked into the rectangular through hole at the top of the support plate.

2. An auxiliary device for processing a buried measuring rod of a collapse verification hole, according to claim 1, characterized in that: The guiding ring (4) and the second support (303) are respectively slidably connected to the top pipe of the right-angle pipe (1), and the first support (2) is fixedly connected to the top pipe of the right-angle pipe (1); the spring (6) is sleeved on the top pipe of the right-angle pipe (1), and the left end of the spring (6) is fixedly connected to the right end face of the second support (303), and the right end of the spring (6) is fixedly connected to the left end face of the first support (2).

3. A construction method of an auxiliary device for processing a buried measuring rod of a collapse verification hole according to any one of claims 1-2, characterized in that, specifically includes the following steps: S1: When the gas chamber and the hole plugging device of the measuring rod are buried by pulverized coal during the construction of the verification borehole in the coal mining face and the tunneling face, the on-site outburst prevention workers and auxiliary construction workers shall immediately stop the construction of the verification borehole, wear protective gloves and goggles, and keep their clothes tidy; S2: First, remove the CWY30 type initial gas emission velocity detector of the borehole, the tail rod of the measuring rod and the intermediate rod exposed outside the borehole orifice, and remove the pressure gauge connecting the hole plugging device to release the air in the hole plugging device to keep the air pressure balance inside and outside the borehole; evacuate the personnel around the verification borehole and maintain a certain safety distance; S3: The outburst prevention worker moves the adjustable handle (10) according to the position of the borehole orifice and his own height, so that the bottom of the adjustable handle (10) is located at the front chest position of the outburst prevention worker, and finally fixes the adjustable handle (10) to the first cross plate (9) through the tightening bolt; S4: The outburst prevention worker connects the right-angle pipe of the auxiliary device to the intermediate rod of the borehole orifice, aligns the groove-type coal baffle with the orifice, and then fixes the auxiliary device to the nearby hydraulic support or steel mesh through the safety chain (18) to ensure firm fixation; S5: Start the fan. The outburst prevention worker holds the handle at the bottom of the adjustable handle (10) and slowly opens the control valve (13) to inject high-pressure air into the verification borehole to increase the air pressure in the borehole, and then push and pull the measuring rod back and forth; S6: Repeatedly operate according to the steps in S5 to blow out part of the blocked pulverized coal by the action of the air pressure in the borehole, causing the measuring rod in the borehole to loosen; S7: Close the control valve (13), stop injecting high-pressure air, and the outburst prevention worker pushes and pulls the measuring rod back and forth to drag out the pulverized coal in the borehole until the measuring rod is taken out of the borehole; S8: The outburst prevention worker checks the integrity of the buried measuring rod, gas chamber and hole plugging device. If the measuring instrument components are damaged, they need to be replaced in time, and then continue the determination work of the initial gas emission velocity index value of the borehole.

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