Water burst prevention structure

Abstract

The invention relates to a water gushing prevention structure which is used for a coal seam bottom plate with a water gushing point, the coal seam bottom plate is covered with backfill soil, the water gushing prevention structure comprises a water diversion tunnel and a drainage channel, the water diversion tunnel is located on the top face of the coal seam bottom plate, is covered with the backfill soil and is used for being communicated with the water gushing point, and the drainage channel is communicated with the water gushing point. A waterproof layer is arranged between the water gushing tunnel and the backfill soil layer, and the water diversion tunnel is further filled with water diversion filler used for guiding the flowing direction of gushing water; the drainage groove is communicated with the water diversion tunnel and used for draining gushing water flowing out of the water diversion tunnel. According to the water gushing prevention structure, gushing water gushing out of the water gushing point can flow in the water diversion tunnel under the action of the water guide filler, the gushing water can not make contact with backfill soil under the action of the waterproof layer, and it is guaranteed that the gushing water can flow into the drainage groove in the water diversion tunnel to be drained; potential safety hazards caused by long-term accumulation and soaking of inner waste dump base backfill soil by gushing water are avoided.

Description

Technical Field

[0001] The present disclosure relates to the technical field of ore mining, and in particular to a water inrush prevention structure. Background Art

[0002] With the end of the dumping of the external dump of the open-pit mine, the internal dumping backfill has become an inevitable trend of development. After the internal dumping operation is implemented in the goaf, the stability of the base determines the stability of the dump. The base of the coal seam is mostly mud layer, and there are openings in the local impermeable layer. After the coal mining is completed, pipe gushing will occur at the opening. If the gushing water at the opening cannot be discharged in time, the gushing water will soak the base of the internal dump, causing creep deformation of the base of the internal dump, and in severe cases, it will also cause the slope to settle and become unstable, posing a greater safety hazard to the safety of the internal dump. Summary of the invention

[0003] The purpose of the present invention is to provide a water gushing prevention structure, which can prevent gushing water from soaking backfill soil and causing potential safety hazards to an internal dumping site.

[0004] In order to achieve the above-mentioned purpose, the present invention provides a water-gushing prevention structure for a coal seam floor with a water-gushing point, the coal seam floor being covered with backfill soil, comprising: a water diversion tunnel, the water diversion tunnel being located on the top surface of the coal seam floor and covered by the backfill soil, being connected to the water-gushing point, a waterproof layer being arranged between the water diversion tunnel and the backfill soil layer, the water diversion tunnel being also filled with a water-conducting filler for guiding the flow direction of the gushing water; and a drainage trough, the drainage trough being connected to the water diversion tunnel, being used for discharging the gushing water flowing out of the water diversion tunnel.

[0005] Optionally, the water diversion tunnel includes a connecting section and a water diversion section, the connecting section is connected to the water gushing point, one end of the water diversion section is connected to the connecting section, and the other end is connected to the drainage ditch, and the depth of the connecting section is greater than the depth of the water diversion section.

[0006] Optionally, a water diversion pipe is provided in the connecting section, one end of the water diversion pipe is inserted into the water gushing point, and the other end extends toward the top of the connecting section, and a plurality of water diversion holes are axially provided on the side wall of the water diversion pipe, and the water diversion pipe is used to divert the gushing water in the water gushing point to the connecting section.

[0007] Optionally, the water diversion pipe extends in a vertical direction, and a water diversion pipe is provided at the top of the water diversion pipe, one end of the water diversion pipe is connected to the water diversion hole at the top of the water diversion pipe, and the other end extends into the drainage trough, and the water diversion pipe is used to divert the gushing water from the top of the water diversion pipe.

[0008] Optionally, a plurality of the water conduits are provided, which are spaced apart along the extension direction of the water conduits.

[0009] Optionally, the water guide pipe is arranged to be inclined downward, with a higher end connected to the water guide pipe and a lower end connected to the drainage groove.

[0010] Optionally, the slope of the water conduit is 0.1-0.3%.

[0011] Optionally, the water-conducting filler is rough stone.

[0012] Optionally, the outer diameter of the rough stone near the waterproof layer is smaller than the outer diameter of the rough stone far from the waterproof layer.

[0013] Optionally, the waterproof layer is a geotextile, and the geotextile covers the top surface and side surfaces of the water diversion tunnel.

[0014] Compared with the prior art, the advantages of the present invention are as follows: the anti-water gushing structure of the present invention includes a water diversion tunnel and a drainage trough, the water diversion tunnel is located on the top surface of the coal seam floor and is covered by backfill soil, and a waterproof layer and a water-conducting filler are arranged in the water diversion tunnel. When water gushing from a water gushing point begins, the gushing water gushing from the water gushing point can flow in the water diversion tunnel under the action of the water-conducting filler, and the gushing water can also be prevented from contacting the backfill soil around the water diversion tunnel under the action of the waterproof layer, ensuring that the gushing water can flow in the water diversion tunnel to be discharged in the drainage trough, thereby preventing the gushing water from accumulating at the bottom of the inner dumping ground for a long time and soaking the backfill soil in the inner dumping ground to cause safety hazards.

[0015] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 Schematic diagram of the structure of the bottom plate water inrush prevention structure provided in an exemplary embodiment of the present disclosure.

[0017] Description of Reference Numerals 1-water diversion tunnel; 11-waterproof layer; 12-water diversion filling material; 13-connecting section; 14-water diversion section; 15-water diversion pipe; 151-water diversion hole; 16-water diversion pipe.

[0018] 2- Drainage trough. DETAILED DESCRIPTION

[0019] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0020] In the present disclosure, unless otherwise stated, directional words such as "upper, lower, high, low, top, bottom" generally refer to the position of the corresponding component or structure in the direction of gravity. Figure 1 The directions of the drawings shown. "Inside and outside" refer to the inside and outside of the corresponding component outline. In addition, it should be noted that the terms used, such as "first, second", etc., are to distinguish one element from another and have no order or importance. In addition, in the description with reference to the drawings, the same mark in different drawings represents the same element. The above definitions are only used to explain and illustrate the present disclosure and should not be understood as limitations on the present disclosure.

[0021] For ease of understanding, the specific structure and working principle of the water inrush prevention structure disclosed herein are described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0022] The present invention relates to a water gushing prevention structure which can be applied to the process of internal drainage and backfilling in coal mines. During the process of internal drainage and backfilling in coal mines, an opening is usually provided on the waterproof structure of the coal seam floor for discharging gushing water in the coal seam floor. During the process of internal drainage and backfilling, water gushing points will be formed. If the gushing water gushing out of the water gushing points is not processed, the gushing water will soak the internal drainage backfill soil, causing the soil to loosen and posing a safety hazard.

[0023] The water-gushing prevention structure disclosed in the present invention can timely discharge the water gushing out of the water-gushing point, and prevent the water from soaking the inner drainage backfill soil. Figure 1 The anti-water gushing structure disclosed in the present invention comprises a water diversion tunnel 1 and a drainage ditch 2. The water diversion tunnel 1 is located on the top surface of the coal seam floor and is covered by backfill soil. A waterproof layer 11 is arranged in the water diversion tunnel 1. The waterproof layer 11 can prevent the gushing water entering the water diversion tunnel 1 from contacting the backfill soil around the water diversion tunnel 1. The waterproof layer 11 can be made of a waterproof film, and the gushing water in the water diversion tunnel 1 is isolated from the backfill soil around the water diversion tunnel 1 by the waterproof film. In some embodiments, the waterproof layer 11 can be arranged on the top surface and side surface of the water diversion tunnel 1, so as to achieve a better effect of isolating the backfill soil. A water-guiding filler 12 is also arranged in the water diversion tunnel 1. The water-guiding filler 12 can guide the flow direction of the gushing water entering the water diversion tunnel 1 to ensure that the gushing water flows in the right direction. The drainage ditch 2 is connected to the water diversion tunnel 1. The gushing water gushing out of the gushing point can be retained in the drainage ditch 2 through the water diversion tunnel 1 and discharged through the drainage ditch 2.

[0024] By setting up the water diversion tunnel 1, when water gushes at the water gushes point, the gushes can be promptly led out to the water diversion tunnel 1. After the gushes enter the water diversion tunnel 1, under the action of the waterproof layer 11 and the water-conducting filler 12, the gushes will not soak the backfill soil around the water diversion tunnel 1, but will flow along the water diversion tunnel 1 until it flows to the drainage trough 2 connected to the water diversion tunnel 1 for discharge. The anti-gushing structure disclosed in the present invention can effectively discharge the gushing water gushing out of the water gushing point by setting up the water diversion tunnel 1 and the drainage trough 2, and prevent the gushing water from soaking the backfill soil and causing safety hazards.

[0025] In one embodiment of the present disclosure, see Figure 1 The water diversion tunnel 1 includes a connecting section 13 and a water diversion section 14, and the depth of the connecting section 13 is greater than the depth of the water diversion section 14. The connecting section 13 is connected to the water gushing point. The connecting section 13 can be a channel that has been excavated before the internal drainage, for example, it can be a transportation channel or some pits during the coal mining period, or it can be a part that is excavated separately during the internal drainage in order to connect and expose the water gushing point. One end of the water diversion section 14 is connected to the connecting section 13, and the other end is connected to the drainage trough 2. Since the connecting section 13 is connected to the water gushing point, the excavation depth is deeper. The water diversion section 14 is mainly used to guide the flow of the gushing water in the connecting section 13, and is set at a shallower depth. Therefore, in this embodiment, the water diversion section can be inclined, so that the drainage trough 2 and the connecting section 13 can be better connected. Of course, in other embodiments, the water diversion tunnel 1 can also be of other structures, as long as the gushing water from the water gushing point can be led out to the drainage trough 2.

[0026] In one embodiment of the present disclosure, see Figure 1 A water diversion pipe 15 is provided in the connecting section 13. One end of the water diversion pipe 15 is connected to the water gushing point, and the other end extends to the top of the connecting section 13. On the side wall of the water diversion pipe 15, a plurality of water diversion holes 151 are also provided along the axial direction. The water diversion holes 151 can be evenly distributed in the axial direction of the water diversion pipe 15. By providing the water diversion pipe 15, when water gushes at the water gushing point, the gushing water gushing out of the water gushing point can be quickly led out, so that the gushing water can quickly flow into the connecting section 13, and then flow through the connecting section 13 and the water diversion section 14 to the drainage groove 2 for discharge. The plurality of water diversion holes 151 are provided in the axial direction of the water diversion pipe 15, so that the speed of the water diversion pipe 15 leading out the gushing water can be accelerated. Moreover, the water diversion holes 151 are evenly distributed along the axial direction of the water diversion pipe 15, so that the gushing water can be more evenly distributed when entering the connecting section 13 through the water diversion holes 151, so that the gushing water can enter the connecting section 13 at different heights, thereby accelerating the speed of the water diversion tunnel 1 discharging the gushing water.

[0027] In one embodiment of the present disclosure, see Figure 1The water diversion pipe 15 extends in the vertical direction, and a water diversion pipe 16 is arranged at the top of the water diversion pipe 15. One end of the water diversion pipe 16 is connected to the water diversion hole 151 at the top of the water diversion pipe 15 and fixedly connected together. The fixed connection method can be fixedly connected together by welding, and the welding also has good stability. The other end of the water diversion pipe 16 is connected to the drainage groove 2. By setting the water diversion pipe 16, after a large amount of gushing water gushes out from the gushing point, the gushing water gushing out from the top of the water diversion pipe 15 can enter the water diversion pipe 16 through the top of the water diversion pipe 15, and then be guided by the water diversion pipe 16 to the drainage groove 2 for discharge, thereby saving the flow time of water in the water diversion tunnel 1, allowing the gushing water to flow to the drainage groove 2 faster, further increasing the speed of discharging the gushing water from the water diversion tunnel 1, and preventing the gushing water from accumulating in the water diversion tunnel 1, breaking through the waterproof layer 11, and contacting the backfill soil around the water diversion tunnel 1, causing safety hazards.

[0028] In one embodiment of the present disclosure, see Figure 1 A plurality of water guide pipes 16 are provided, which are arranged at intervals along the extension direction of the water guide pipe 15. The plurality of water guide pipes 16 can be connected with the water guide holes 151 at different positions on the water guide pipe 15, so that the gushing water at different positions of the water guide pipe 15 can be guided out to the drainage groove 2 for rapid discharge, thereby further increasing the drainage capacity of the water guide tunnel 1 when a large amount of gushing water gushes out at the gushing point, and preventing the gushing water from accumulating in the water guide tunnel 1.

[0029] In one embodiment of the present disclosure, see Figure 1 , the water pipe 16 is arranged obliquely, the higher end is connected to the water diversion pipe 15, and the lower end is connected to the drainage trough 2. The water pipe 16 is arranged obliquely, so that the gushing water in the water pipe 16 can be accelerated to flow in the water pipe 16 under the action of its own gravity, rather than flowing only under the pressure of water, thereby increasing the flow speed of the gushing water in the water pipe 16, thereby increasing the speed of the water diversion tunnel 1 to drain the gushing water, and avoiding the accumulation of gushing water in the water diversion tunnel 1. In some embodiments of the present disclosure, the slope of the water pipe 16 is 0.1-0.3%. Such an arrangement can make the slope of the water pipe 16 smooth as a whole, facilitate the laying and water diversion of the water pipe 16, and the fixed connection between the water pipe 16 and the water diversion pipe 15. Of course, in other embodiments, the water pipe 16 can also be arranged on the water diversion pipe 15 in other ways, as long as it can achieve the effect of rapid water diversion, and the present disclosure does not limit this.

[0030] In one embodiment of the present disclosure, see Figure 1The water-conducting filler 12 is rubble stone, which is a by-product of the coal mining process. Rubble stone is used as the water-conducting filler 12. On the one hand, rubble stone has better water conductivity than soil, and on the other hand, rubble stone can be effectively utilized to save costs. Filling the water diversion tunnel 1 with rubble stone can also prevent the water diversion tunnel 1 from collapsing. When the gushing water from the gushing point enters the water diversion tunnel 1, the rubble stone does not absorb water, and compared with the soil, the gushing water flows smoothly in the rubble stone, so that the fluidity of the gushing water in the rubble stone will not be reduced. As the gushing water continues to flow in the rubble stone, the gushing water can flow to the drainage trough 2 connected to the water diversion tunnel 1 and then be discharged. Of course, in other embodiments, the water-conducting filler 12 can also be other types of materials, which can be determined according to actual conditions, and the present disclosure does not limit this.

[0031] In one embodiment of the present disclosure, see Figure 1 , the outer diameter of the rough stone near the waterproof layer 11 is smaller than that of the rough stone far from the waterproof layer 11. Since the ends of the rough stones with larger outer diameters are sharper and easily scratch the waterproof layer 11, the rough stones with smaller outer diameters are arranged in this way, close to the waterproof layer 11 in the water diversion tunnel 1, which can not easily scratch the waterproof layer 11, thereby ensuring the waterproof effect of the waterproof layer 11 and preventing the gushing water in the water diversion tunnel 1 from flowing out through the waterproof layer 11 and contacting the backfill soil around the water diversion tunnel 1, thereby causing potential safety hazards.

[0032] In one embodiment of the present disclosure, see Figure 1 The waterproof layer 11 is a geotextile, which covers the top and side surfaces of the water diversion tunnel 1. The geotextile is set as the waterproof layer 11 because the geotextile has a good waterproof effect and is not easily damaged. On the other hand, the geotextile also has a low cost. Of course, the waterproof layer 11 can also be other types of materials, which can be determined according to actual conditions, and the present disclosure does not limit this.

[0033] In this embodiment, the geotextile covers the top and side surfaces of the water diversion tunnel 1. Since the gushing water gushes out from the bottom surface of the water diversion tunnel 1, the geotextile is arranged on the top and side surfaces of the water diversion tunnel 1 to prevent the gushing water from contacting and soaking the backfill soil on the top or side surfaces of the water diversion tunnel 1, thereby causing safety hazards. Since the backfill soil on the bottom surface does not absorb water compared to the backfill soil, the gushing water will flow in the water diversion tunnel 1 under the action of the water diversion filler 12, and will not soak the backfill soil on the bottom surface for a long time, thereby causing safety hazards. Therefore, there is no need to lay a geotextile on the bottom surface of the water diversion tunnel 1, which can save costs to a certain extent.

[0034] During the construction of the water-gushing prevention structure disclosed in the present invention, since the water-gushing location is generally at a low terrain, it is easy to collect a large amount of water. Before the internal drainage, the water-gushing can be discharged through the construction of drainage ditches. After the water-gushing is discharged, the water-guiding pipe 15 is inserted at the water-gushing point so that the water-gushing can flow upward along the water-guiding pipe 15. After that, it is necessary to lay rubble stones and geotextiles around the water-guiding pipe 15. During the rubble stone laying process, the water-guiding pipe 16 is installed on the water-guiding pipe 15 according to the situation. Finally, the geotextile is laid again on the top of the rubble stones and the soil is backfilled to complete the construction of the water-gushing prevention structure.

[0035] When the gushing point starts to gushing, the gushing water will be led out of the gushing point under the action of the water diversion pipe 15, and part of the gushing water will directly flow out of the water diversion pipe 15 through the water diversion hole 151 on the water diversion pipe 15 into the water diversion tunnel 1, and under the action of the rough stones in the water diversion tunnel 1, it will flow in the water diversion tunnel 1 until it flows into the drainage trough 2 for discharge. Another part of the gushing water will flow into the water diversion pipe 16 through the water diversion hole 151 on the water diversion pipe 15, and flow in the water diversion pipe 16 to the drainage trough 2 for discharge.

[0036] The water-gushing prevention structure disclosed in the present invention, by providing a water diversion tunnel 1 and a drainage ditch 2, enables the water gushing out from the water gushing point to flow in the water diversion tunnel 1 under the action of the water-conducting filler 12, and also enables the water gushing out to not contact the backfill soil around the water diversion tunnel 1 under the action of the waterproof layer 11, thereby ensuring that the water gushing out can flow in the water diversion tunnel 1 to be discharged into the drainage ditch 2, thereby preventing the water gushing out from accumulating at the bottom of the inner dump for a long time and soaking the backfill soil in the inner dump to cause safety hazards.

[0037] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0038] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0039] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A water inrush prevention structure, used for a coal seam floor with a water inrush point, the coal seam floor is covered with backfill soil, characterized in that: include: A water diversion tunnel, the water diversion tunnel is located on the top surface of the coal seam floor and is covered by the backfill soil, and is used to communicate with the water gushing point. A waterproof layer is provided between the water diversion tunnel and the backfill soil. The water diversion tunnel is also filled with a water-conducting filler to guide the flow direction of the gushing water. A drainage ditch is connected to the water diversion tunnel and is used to drain the gushing water flowing out of the water diversion tunnel.

2. The water surge prevention structure according to claim 1, characterized in that: The water diversion tunnel includes a connecting section and a water diversion section, the connecting section is connected to the water gushing point, one end of the water diversion section is connected to the connecting section, and the other end is connected to the drainage groove, and the depth of the connecting section is greater than the depth of the water diversion section.

3. The water surge prevention structure according to claim 2, characterized in that: A water diversion pipe is provided in the connecting section, one end of which is inserted into the water gushing point, and the other end extends toward the top of the connecting section. A plurality of water diversion holes are axially provided on the side wall of the water diversion pipe, and the water diversion pipe is used to divert the gushing water in the water gushing point to the connecting section.

4. The water surge prevention structure according to claim 3, characterized in that: The water diversion pipe extends in a vertical direction, and a water diversion pipe is arranged at the top of the water diversion pipe. One end of the water diversion pipe is connected to the water diversion hole at the top of the water diversion pipe, and the other end extends into the drainage trough. The water diversion pipe is used to divert the gushing water from the top of the water diversion pipe.

5. The water surge prevention structure according to claim 4, characterized in that: The water guide pipes are provided in plurality and are arranged at intervals along the extending direction of the water guide pipes.

6. The water surge prevention structure according to claim 4 or 5, characterized in that: The water guide pipe is arranged to be inclined downward, with a higher end being communicated with the water guide pipe and a lower end being communicated with the drainage groove.

7. The water surge prevention structure according to claim 6, characterized in that: The slope of the water conduit is 0.1-0.3%.

8. The water surge prevention structure according to claim 1, characterized in that: The water-conducting filler is rough stone.

9. The water surge prevention structure according to claim 8, characterized in that: The outer diameter of the rough stone near the waterproof layer is smaller than the outer diameter of the rough stone far from the waterproof layer.

10. The water surge prevention structure according to claim 1, characterized in that: The waterproof layer is a geotextile, and the geotextile covers the top surface and the side surfaces of the water diversion tunnel.

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