A kind of goaf gas detection interconnection device for coal mining face

Abstract

The application provides a kind of for coal mine stoping working face goaf gas detection communication device, including side sealing block and plugging wall, detection communication pipe, it is arranged in the through hole inside the plugging wall;And pipe plug, detachably arranged in one end of the detection communication pipe, when needing to determine the gas in stoping working face goaf, pull out pipe plug, connect detection communication pipe with gas detector and carry out gas detection, pipeline support assembly, including lateral support assembly and horizontal support assembly, pipeline support assembly is arranged at the junction of the communication pipe both sides and plugging wall.The application passes through the through hole of the plugging wall of detection communication pipe, when needing to determine the gas in stoping working face goaf, pull out pipe plug, connect detection communication pipe with gas detector, can determine the gas composition in this area, greatly improves the gas detection efficiency in stoping working face goaf, and has important significance for improving the management level of mine fire prevention.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of coal mining, in particular to a kind of for coal mine stoping working face goaf gas detection intercommunication device. BACKGROUND

[0002] Coal mine goaf: refers to in the process of coal mining, after the completion of underground coal or coal gangue etc. Mining left hole or cavity, because of coal mining process, need to take underground coal resources mining away, generally will be in the process of excavation, adopt the method similar to over mountain tunnel on road, gradually punch the tunnel between the position of underground coal to coal mine wellhead, generally will be encountered in the process of mining ore, coal etc. Transported to ground, so as to form reasonable transport and mining operation face, with the continuous transport of coal and other ores, underground formed such coal goaf.

[0003] Goaf residual coal oxidation spontaneous combustion, cause serious threat to coal mine safety production, in order to effectively prevent goaf residual coal spontaneous combustion, take the method of working face into, return air corner brickwork plugging wall, isolate goaf gas, reduce air leakage to goaf.

[0004] The present application inventors in the process of realizing the technical scheme in the embodiments of the present application, found that the above-mentioned technology at least has the following technical problems:

[0005] 1. Brickwork plugging wall causes difficulty in detecting goaf gas, cannot effectively monitor the change of goaf gas, restricts mine safety and efficient production;

[0006] 2. Need to regularly carry out residual gas sampling and detection work, frequent drilling and filling, not only low efficiency, but also easy to produce spark when drilling, which has safety hazard;

[0007] 3. One end of connecting pipe needs to be frequently opened and connected, which can easily cause loosening of the connection between the connecting pipe and the wall, resulting in goaf gas leakage and causing safety hazard, therefore, we propose a kind of for coal mine stoping working face goaf gas detection intercommunication device to solve the above problems. SUMMARY

[0008] The main purpose of the present application is to provide a kind of for coal mine stoping working face goaf gas detection intercommunication device, can effectively solve the problems in the background art.

[0009] To achieve the above purpose, the technical scheme adopted by the present application is:

[0010] A kind of for coal mine stoping working face goaf gas detection intercommunication device, comprising:

[0011] Side sealing block and plugging wall,

[0012] A detection communication pipe is arranged in a through hole in the sealing wall; and

[0013] A pipe plug is detachably arranged at one end of the detection communication pipe, and when it is necessary to detect the gas in the goaf of the mining face, the pipe plug is pulled out, a gas detector is connected to the detection communication pipe, and the gas is detected.

[0014] Preferably, the pipe supporting assembly comprises a lateral supporting assembly and a horizontal supporting assembly, and the pipe supporting assembly is arranged at the connection between the communication pipe and the sealing wall.

[0015] Preferably, the horizontal supporting assembly comprises a limiting plug, the limiting plug is arranged on the goaf side of the sealing wall, a clamping block is clamped on the outside of the limiting plug, the clamping block is sleeved on the outside of the detection communication pipe, the limiting plug is made of stainless steel and has good structural strength and wear resistance, the clamping block is made of plastic and can be deformed, and the limiting plug is a wedge-shaped special-shaped block, which can be clamped more tightly in the clamping block when the detection communication pipe is pulled outward, so as to bear the pulling force of the detection communication pipe pulled to the left side and improve the stability of the horizontal outward force.

[0016] Preferably, the lateral supporting assembly is arranged on the outside of the detection communication pipe and comprises a supporting ring, the supporting ring is a circular ring structure, an inner thread is arranged on the inner ring of the supporting ring, an outer thread is arranged on the outer side of the middle part of the detection communication pipe, the supporting ring is rotatably connected to the outside of the detection communication pipe through the inner thread, a rotating protrusion is arranged on the outside of the supporting ring, the rotating protrusion is a conical block protruding outward, which facilitates the rotation of the supporting ring, and three groups of supporting rods are symmetrically arranged on one side edge of the supporting ring, a supporting foot is arranged at one end of the supporting rod, and the supporting foot is in contact with the sealing wall to realize the lateral structural support of the detection communication pipe and provide lateral support when the pipe plug is frequently opened and closed.

[0017] Preferably, a sealing plug is arranged on the right middle part of the supporting ring, the sealing plug is a circular rubber sealing ring, and the sealing plug is inserted into the gap between the sealing wall and the detection communication pipe to ensure the sealing of the detection communication pipe and the sealing wall, wherein the sealing plug adopts an inclined circular arc structure, the depth of insertion of the sealing plug is controlled by the tightening of the supporting ring on the outside of the detection communication pipe, and the sealing property is better ensured.

[0018] Preferably, an inner thread is arranged on the outside of the pipe plug, and an outer thread is arranged on the outside of the connected detection communication pipe, so that the detachable structure is a threaded connection, which is simple and reliable and convenient to disassemble.

[0019] Preferably, the detection communication pipe is a stainless steel pipe, and the detection communication pipe is buried in the side sealing block and is about one meter away from the top sealing wall.

[0020] The pipe plug inner diameter and the detection communication pipe diameter are preferably 10 mm, the detection communication pipe is formed by sleeving two pipes, and the length of each pipe is 1000 mm.

[0021] Preferably, the plugging wall material is perlite powder, which has the characteristics of low thermal conductivity, good chemical stability, wide use temperature range, small moisture absorption capacity, and no toxicity, odor, and fire resistance. According to the actual situation of mines in different regions, a plugging wall is built every 5-10 meters.

[0022] Compared with the prior art, the present application has the following beneficial effects:

[0023] 1. The detection communication pipe passes through the through hole of the plugging wall. When it is necessary to measure the gas in the goaf of the mining face, the pipe plug is pulled out, the gas detector is connected to the detection communication pipe, and the gas composition in the area can be measured, thereby greatly improving the gas detection efficiency in the goaf of the mining face, and having the characteristics of convenience, speed, and economy, which is of great significance to improve the management level of mine fire prevention and extinguishment.

[0024] 2. The limiting plug is connected to the inner side of the clamping block, so that it can be clamped more tightly, thereby bearing the pulling force of the detection communication pipe to the left side and improving the stability of the horizontal external force. The support ring is rotatably connected to the outer side of the detection communication pipe through the internal thread, and the rotating protrusion is a conical block protruding outward, so that the support ring can be easily rotated. The support foot contacts the plugging wall to realize the lateral structural support of the detection communication pipe, and provides lateral support when the pipe plug is frequently opened and closed.

[0025] 3. The sealing plug is inserted into the gap between the plugging wall and the detection communication pipe to ensure the sealing of the detection communication pipe and the plugging wall. The sealing plug adopts an inclined circular arc structure, and the depth of insertion of the sealing plug is controlled by the tightening of the support ring on the outer side of the detection communication pipe, thereby better ensuring the sealing. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a front view structural diagram of a gas detection communication device for a coal mining face goaf of the present application;

[0027] Figure 2 It is a side view structural diagram of a gas detection communication device for a coal mining face goaf of the present application;

[0028] Figure 3 It is a connection structure diagram of a detection communication pipe and a side sealing block in a gas detection communication device for a coal mining face goaf of the present application;

[0029] Figure 4 It is a side view structural diagram of a support ring in a gas detection communication device for a coal mining face goaf of the present application;

[0030] Figure 5 It is a side view structure diagram of a gas detection communication device for a coal mine working face goaf.

[0031] In the figure: 1, side sealing block; 2, sealing wall; 3, detection communication pipe; 4, pipe plug; 5, internal thread; 6, support rod; 7, support ring; 8, sealing plug; 9, limiting plug; 10, clamping block; 11, rotating protrusion; 12, internal thread. DETAILED DESCRIPTION

[0032] The following is a description of the present application. After the working face is mined for a distance, in order to effectively prevent the spontaneous combustion of residual coal in the goaf, a sealing wall is built in the return air corner of the working face to cut the top line and isolate the goaf gas, thereby reducing air leakage to the goaf. However, periodic sampling and detection of residual gas are required, and frequent drilling and filling not only have low efficiency, but also have safety hazards due to sparks generated during drilling.

[0033] Example 1

[0034] Referring to Figures 1-2 Fig. 1, a gas detection communication device for a coal mine working face goaf includes a side sealing block 1 and a sealing wall 2,

[0035] A detection communication pipe 3 is arranged in a through hole in the sealing wall 2.

[0036] A pipe plug 4 is detachably arranged at one end of the detection communication pipe 3. When it is necessary to measure the gas in the goaf of the working face, the pipe plug 4 is pulled out, and a gas detector is connected to the detection communication pipe 3 for gas detection.

[0037] As Figure 3 shown, an internal thread 5 is arranged on the outer side of the pipe plug 4, and an external thread is arranged on the outer side of the connected detection communication pipe 3. The detachable structure is a threaded connection, which is simple and reliable, and quick and convenient to disassemble.

[0038] The gas detection pipe of the detection communication pipe 3 is a stainless steel pipe, and the detection communication pipe 3 is buried in the side sealing block 1, about one meter away from the top sealing wall 2.

[0039] The inner diameter of the pipe plug 4 and the diameter of the detection communication pipe 3 are 10 mm. The detection communication pipe 3 is formed by two sleeves, and its length can be adjusted by pulling. Each length is 1000 mm.

[0040] The sealing wall 2 is made of perlite powder, which has the characteristics of low thermal conductivity, good chemical stability, wide use temperature range, small moisture absorption capacity, and is non-toxic, odorless, fireproof, etc. According to the actual situation of different regions and mines, a sealing wall 2 is built every 5-10 meters.

[0041] Example 2

[0042] The structure of the communication pipe is installed on the inside of the wall body with a gap, which needs to be filled, and the end of the connecting pipe needs to be frequently opened and connected, which is easy to cause loosening of the connection between the communication pipe and the wall body, leading to gas leakage in the goaf, causing safety hazards,

[0043] Compared with Example 1, the following differences are provided, a pipe support assembly is arranged at the connection between the communication pipe and the wall body, which includes a lateral support assembly and a horizontal support assembly,

[0044] The horizontal support assembly includes a limiting plug 9 arranged inside the goaf of the plugging wall 2, a clamping block 10 is clamped outside the limiting plug 9, the clamping block 10 is tied outside the detection communication pipe 3, the limiting plug 9 is made of stainless steel material, which has good structural strength and wear resistance, the clamping block 10 is made of plastic material and can be deformed, the limiting plug 9 is a wedge-shaped special-shaped block, when the detection communication pipe 3 is pulled outward, the limiting plug 9 is clamped inside the clamping block 10, which can be clamped more tightly, so as to bear the pulling force of the detection communication pipe 3 pulled to the left side, improve the stability of the horizontal outward force,

[0045] The lateral support assembly is arranged outside the detection communication pipe 3, which includes a support ring 7, the support ring 7 is a circular ring structure, an inner thread 12 is arranged in the inner circle of the support ring 7, an outer thread is arranged on the outer side of the middle part of the detection communication pipe 3, the support ring 7 is rotatably connected to the outer side of the detection communication pipe 3 through the inner thread 12, a rotating protrusion 11 is arranged on the outer side of the support ring 7, the rotating protrusion 11 is a conical block protruding outward, which is convenient for rotating the support ring 7, three groups of support rods 6 are symmetrically arranged on one side of the support ring 7, a support foot is arranged at one end of the support rod 6, which is in contact with the plugging wall 2 to realize the lateral structural support of the detection communication pipe 3, and provide lateral support when the pipe plug 4 is frequently opened and closed,

[0046] A sealing plug 8 is arranged on the right middle part of the support ring 7, the sealing plug 8 is a circular rubber sealing ring, which is inserted into the gap between the plugging wall 2 and the detection communication pipe 3 to ensure the sealing of the detection communication pipe 3 and the plugging wall 2, wherein the sealing plug 8 adopts an inclined circular arc structure, the depth of the sealing plug 8 is controlled by the tightening of the support ring 7 outside the detection communication pipe 3, so as to better ensure the sealing.

[0047] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A gas detection and connection device for the goaf area of ​​a coal mine longwall face, comprising: The side sealing block (1) and the sealing wall (2) are characterized in that: The test tube (3) is inserted through a through hole inside the sealing wall (2); and The plug (4) is detachably installed at one end of the detection connecting pipe (3). When it is necessary to measure the gas in the goaf of the mining face, the plug (4) is removed and the gas detector is connected to the detection connecting pipe (3) for gas detection. The pipeline support assembly includes a lateral support assembly and a horizontal support assembly. The pipeline support assembly is installed at the connection between the connecting pipe (3) and the sealing wall (2) on both sides. The horizontal support assembly includes a limiting plug (9), which is located inside the goaf of the sealing wall (2). A locking block (10) is attached to the outside of the limiting plug (9). The locking block (10) is sleeved on the outside of the detection connecting pipe (3). The limiting plug (9) is made of wedge-shaped stainless steel, and the locking block (10) is made of plastic. The lateral support assembly is located outside the detection connecting pipe (3) and includes a support ring (7). The inner ring of the support ring (7) is provided with a first internal thread (12), and the outer side of the middle part of the detection connecting pipe (3) is provided with an external thread. The support ring (7) is rotatably connected to the outer side of the detection connecting pipe (3) through the first internal thread (12).

2. The gas detection and connection device for the goaf area of ​​a coal mine longwall face according to claim 1, characterized in that: The support ring (7) is provided with a rotating protrusion (11) on the outside. The rotating protrusion (11) is a conical block protruding on the outside. Three sets of support rods (6) are symmetrically arranged on one side of the support ring (7). One end of the support rod (6) is provided with a support foot.

3. The gas detection and connection device for the goaf area of ​​a coal mine longwall face according to claim 1, characterized in that: A sealing plug (8) is provided in the middle of the right side of the support ring (7). The sealing plug (8) is a circular rubber sealing ring. The sealing plug (8) adopts an inclined arc structure. The insertion depth of the sealing plug (8) is controlled by tightening the support ring (7) on the outside of the detection connecting pipe (3).

4. The gas detection and connection device for the goaf area of ​​a coal mine longwall face according to claim 1, characterized in that: The plug (4) has a second internal thread (5) on its outer side, and the connecting detection tube (3) has an external thread on its outer side. The detachable structure is a threaded connection.

5. A gas detection and connection device for the goaf area of ​​a coal mine longwall face according to claim 1, characterized in that: The gas detection tube (3) is a stainless steel tube. The gas detection tube (3) is buried in the side sealing block (1) and is about one meter away from the top sealing wall (2).

6. A gas detection and connection device for goaf areas in coal mine longwall faces according to claim 5, characterized in that: The inner diameter of the plug (4) and the diameter of the detection connecting tube (3) are 10mm. The detection connecting tube (3) is made of two tubes connected together. Its length can be adjusted by pulling. Each tube is 1000mm long.

7. A gas detection and connection device for goaf areas in coal mine longwall faces according to claim 6, characterized in that: The sealing wall (2) is made of perlite powder, and the sealing wall (2) is built every 5-10 meters.

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