Roadway arrangement structure of jump mining working face in mining area based on rock burst mine

Abstract

The utility model discloses a roadway arrangement structure for a jump mining working face in a mining area based on a rock burst mine, which is characterized in that a second stope working face and a third stope working face are respectively arranged on two sides of a first stope working face, and a fourth stope working face is arranged on one side, far away from the first stope working face, of the second stope working face; a measure roadway is formed in the middle section of the second stope working face and the fourth stope working face and penetrates through the second stope working face and the fourth stope working face, the two ends of the measure roadway are communicated with the roadways on the two sides of the measure roadway respectively, and the included angle between the measure roadway and the roadways ranges from 50 degrees to 70 degrees. The utility model has the advantages that the structure is simple, the implementation is easy, and the roadway arrangement is simple; the condition of continuous mining interruption is avoided, and high-yield and high-efficiency development of a coal mine is ensured; the roadway is not wasted, repeated use is achieved, economic benefits are remarkable, drainage and drainage are more convenient, the goaf flood risk is reduced, safe stoping of the fourth stoping face is facilitated, and the safety coefficient is high.

Description

Technical field:

[0001] The utility model relates to a tunnel arrangement structure, in particular to a tunnel arrangement structure for a skip mining working face in a mining area of ​​a rock burst mine. Background technology:

[0002] Rock burst (also known as rock burst) is one of the typical coal-rock dynamic disasters that occur during coal mining, and is also a special form of mine pressure manifestation. During coal mining, the coal and rock mass around the mining face accumulates a large amount of elastic energy under high stress. When the critical stress state of the coal and rock mass is exceeded, the accumulated energy is suddenly released, severely damaging the coal and rock mass and causing it to fall or be thrown out in large quantities, producing obvious dynamic effects such as sound, vibration, and air waves.

[0003] At present, the impact of coal mine pressure is extremely serious. Combined with the research on the control of impact ground pressure in coal mines in recent years, it is found that in deep buried mines, narrow coal pillars are left in sections, and left and right skipping mining is adopted to avoid stress concentration and achieve impact ground pressure control; however, the above-mentioned left and right skipping mining method has the following problems. If no other measures are taken when the first mining face in the mining area is connected to the second mining face adjacent to it, due to the existence of the stable period of the goaf (the stable period is generally 6 months), it is necessary to wait until the stable period has passed before the second mining face can be excavated close to the first mining face. The return air tunnel of the working face; therefore, after the mining of the first mining face is completed, the rear section of the return air tunnel of the second mining face cannot be excavated because the rear section of the first mining face has not reached the stable period. Therefore, it is necessary to wait until the rear section of the first mining face reaches the stable period before the return air tunnel can be excavated. Only after the excavation of the return air tunnel is completed can the second mining face be mined. As a result, the first mining face is mined but the second mining face cannot be mined in time, that is, there is a gap in mining continuity, which affects the high-yield and efficient development of the coal mine.

[0004] To this end, the utility model discloses a tunnel arrangement structure for a skip-mining working face in a mining area of ​​a rock burst mine, so as to solve or improve the above-mentioned problems. Utility model content:

[0005] The utility model aims to provide a tunnel arrangement structure for a skip mining working face in a mining area of ​​a rock burst mine, which has a simple structure, avoids mining continuity interruptions, and has a high safety factor.

[0006] The utility model is implemented by the following technical scheme: The purpose of this patent is to provide a tunnel arrangement structure for a skip mining face in a mining area of ​​a rock burst mine, which includes a plurality of mining faces arranged side by side, and tunnels are respectively arranged on both sides of each of the mining faces, the tunnels on both sides of the mining faces are return air tunnels and transport tunnels, and the second mining face and the third mining face are respectively arranged on both sides of the first mining face, and the fourth mining face is arranged on the side of the second mining face away from the first mining face; a measure tunnel is opened in the middle section of the second mining face and the fourth mining face, and the measure tunnel runs through the second mining face and the fourth mining face, and the two ends of the measure tunnel are respectively connected to the tunnels on both sides thereof, and the angle between the measure tunnel and the tunnel is 50-70°.

[0007] Furthermore, the two ends of the measure tunnel are respectively connected to the return air tunnel of the second mining face and the transport tunnel of the fourth mining face; one end of the transport tunnel of the fourth mining face is connected to the return air tunnel of the mining area.

[0008] Furthermore, the mining area return air tunnel, mining area conveyor tunnel and mining area auxiliary transport tunnel are arranged side by side on the side away from the mining working face; one end of the transport tunnel of each mining working face is connected with the mining area auxiliary transport tunnel, the mining area conveyor tunnel and the mining area return air tunnel in sequence.

[0009] Furthermore, the measure tunnel intersects and is connected with the two tunnels between the second mining working face and the fourth mining working face.

[0010] Furthermore, a narrow coal pillar is left between the tunnels of two adjacent mining working faces.

[0011] Furthermore, the width of the narrow coal pillar is 5-7m.

[0012] Advantages of the utility model:

[0013] 1. The utility model has a simple structure, is easy to implement, and has a simple tunnel layout. After the first mining face is mined, the transport tunnel and the measure tunnel of the fourth mining face are directly excavated at the same time, so that the measure tunnel connects the transport tunnel of the fourth mining face and the front section of the return air tunnel of the second mining face, forming a ventilation system for the early stage of the second mining face. After that, the second mining face can be mined directly, ensuring seamless connection with the first mining face, avoiding interruptions in mining continuity, and ensuring high-yield and efficient development of the coal mine. When the rear section of the first mining face reaches a stable period, the rear section of the return air tunnel of the second mining face is excavated and connected to the return air tunnel of the mining area, forming a ventilation system for the late stage of the second mining face. The ventilation system of the second mining face is flexible and convenient to switch, without the need for too many ventilation facilities. The systems are stable and reliable before and after the switching, which is conducive to safe and efficient mining of the second mining face.

[0014] 2. The transport lane of the fourth mining face in the utility model can be used as the return air auxiliary lane of the second mining face in the early stage, and can still be used as the transport lane of the fourth mining face in the later stage. The lane is not wasted and can be reused, which has significant economic benefits. The measure lane located at the fourth mining face can also be used as a channel for draining the goaf water of the second mining face in the later stage, making the drainage more convenient, draining the goaf water in advance, reducing the risk of goaf water disasters, and facilitating the safe mining of the fourth mining face with a high safety factor. Description of the drawings:

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 for Figure 1 A partial enlarged schematic diagram of part A.

[0018] Tunnel 1, return air tunnel 11, transport tunnel 12, first mining face 2, second mining face 3, third mining face 4, fourth mining face 5, measure tunnel 6, mining area return air tunnel 7, mining area conveyor tunnel 8, mining area auxiliary transport tunnel 9, narrow coal pillar 10. Specific implementation method:

[0019] Example: Figure 1-2As shown, a tunnel arrangement structure of a skip mining face in a mining area based on rock burst mine comprises a plurality of mining faces arranged side by side, and tunnels 1 are respectively arranged on both sides of each mining face, and the tunnels 1 on both sides of the mining faces are respectively a return air tunnel 11 and a transport tunnel 12, and a second mining face 3 and a third mining face 4 are respectively arranged on both sides of the first mining face 2, and a fourth mining face 5 is arranged on the side of the second mining face 3 away from the first mining face 2; a measure tunnel 6 is opened in the middle section between the second mining face 3 and the fourth mining face 5, and the measure tunnel 6 runs through the second mining face 3 and the fourth mining face 5. There are three mining faces 5, and the measure tunnel 6 located at the fourth mining face 5 can also be used as a channel for draining the goaf water of the second mining face 3 in the later stage, making the drainage more convenient. Draining the goaf water in advance reduces the risk of goaf water disasters, which is conducive to the safe mining of the fourth mining face 5 with a high safety factor; the two ends of the measure tunnel 6 are respectively connected with the tunnels 1 on both sides thereof, and the angle between the measure tunnel 6 and the tunnel 1 is 50-70°, ensuring that when the second mining face 3 and the fourth mining face 5 are being mined, the working face being mined is not directly connected with the entire measure tunnel 6, so as to avoid the sudden increase in pressure on the roof of the working face being mined and the occurrence of safety hazards.

[0020] The two ends of the measure tunnel 6 are respectively connected with the return air tunnel 11 of the second mining face 3 and the transport tunnel 12 of the fourth mining face 5. The transport tunnel 12 of the fourth mining face 5 can be used as the return air auxiliary tunnel of the second mining face 3 in the early stage, and can still be used as the transport tunnel 12 of the fourth mining face 5 in the later stage. The tunnel 1 is not wasted and can be reused, with significant economic benefits. The measure tunnel 6 intersects and is connected with the two tunnels 1 between the second mining face 3 and the fourth mining face 5.

[0021] On the side away from the mining working face, the mining area return air tunnel 7, the mining area conveyor tunnel 8 and the mining area auxiliary transport tunnel 9 are opened side by side; one end of the transport tunnel 12 of each mining working face is connected with the mining area auxiliary transport tunnel 9, the mining area conveyor tunnel 8 and the mining area return air tunnel 7 in sequence.

[0022] A narrow coal pillar 10 is left between the tunnels 1 of two adjacent mining working faces, and the width of the narrow coal pillar 10 is 5-7m.

[0023] Working principle: After the mining of the first mining face 2 is completed, the transport tunnel 12 and the measure tunnel 6 of the fourth mining face 5 are directly excavated at the same time, so that the measure tunnel 6 connects the transport tunnel 12 of the fourth mining face 5 and the front section of the return air tunnel 11 of the second mining face 3, forming the early ventilation system of the second mining face 3. After that, the second mining face 3 can be mined directly to ensure seamless connection with the first mining face 2, avoid interruptions in mining continuity, and ensure high-yield and efficient development of the coal mine; when the rear section of the first mining face 2 reaches a stable period, the rear section of the return air tunnel 11 of the second mining face 3 is excavated and connected with the return air tunnel 7 of the mining area, forming the late ventilation system of the second mining face 3. The ventilation system of the second mining face 3 is flexible and convenient to switch, without the need for too many ventilation facilities. The systems are stable and reliable before and after the switching, which is conducive to the safe and efficient mining of the second mining face 3.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tunnel arrangement structure for a skip-mining working face in a mining area of ​​a rock burst mine, comprising a plurality of mining working faces arranged side by side, with tunnels arranged on both sides of each mining working face, wherein the tunnels on both sides of the mining working face are a return air tunnel and a transport tunnel, characterized in that: The second mining face and the third mining face are respectively arranged on both sides of the first mining face, and the fourth mining face is arranged on the side of the second mining face away from the first mining face; a measure tunnel is opened in the middle section between the second mining face and the fourth mining face, and the measure tunnel runs through the second mining face and the fourth mining face, and both ends of the measure tunnel are respectively connected to the tunnels on both sides thereof, and the angle between the measure tunnel and the tunnel is 50-70°.

2. The tunnel layout structure of the skip-mining working face in the mining area of ​​a rock burst mine according to claim 1 is characterized in that: The two ends of the measure tunnel are respectively connected to the return air tunnel of the second mining face and the transport tunnel of the fourth mining face; one end of the transport tunnel of the fourth mining face is connected to the return air tunnel of the mining area.

3. The tunnel layout structure of the skip-mining working face in the mining area of ​​a rock burst mine according to claim 2 is characterized in that: On the side away from the mining working face, the mining area return air tunnel, the mining area conveyor tunnel and the mining area auxiliary transport tunnel are arranged side by side; one end of the transport tunnel of each mining working face is connected with the mining area auxiliary transport tunnel, the mining area conveyor tunnel and the mining area return air tunnel in sequence.

4. A tunnel arrangement structure for skip mining working face in a mining area based on rock burst mine according to any one of claims 1 to 3, characterized in that: The measure tunnel intersects and is connected with the two tunnels between the second mining working face and the fourth mining working face.

5. The tunnel layout structure of the skip-mining working face in the mining area of ​​a rock burst mine according to claim 1, characterized in that: A narrow coal pillar is left between the tunnels of two adjacent mining working faces.

6. The tunnel layout structure of the skip-mining working face in the mining area of ​​a rock burst mine according to claim 5 is characterized in that: The width of the narrow coal pillar is 5-7m.

Images