Rapid air leakage and structure protection cooperation device based on mining plugging air wall

Abstract

The invention discloses a rapid gas leakage and structure protection cooperation device based on a mining gas blocking wall, and belongs to the technical field of mine gas disaster prevention and control. The rapid air leakage and structural protection cooperation device based on the mining plugging air wall comprises an air wall body and an air wall protection assembly, the air wall body comprises an inner container and an outer container, a pair of horizontal sliding rail channels and a pair of vertical sliding rail channels are formed in the outer side of the outer container, and an air inflation hole and an air leakage hole are formed in the air wall body. Comprising a horizontal protection assembly and a vertical protection assembly, the gas leakage assembly comprises a conveying pipeline and a hoop, one end of the conveying pipeline is in threaded connection with a gas leakage hole, and the other end of the conveying pipeline is inserted into a drill hole of a gas extraction pipeline and fixed through the hoop. The gas wall body is prevented from being damaged due to the fact that the gas wall body touches sharp objects when moving, and the gas wall body is rapidly deflated through the negative pressure environment of the gas extraction pipeline.

Description

Technical Field

[0001] The present invention relates to the technical field of mine gas disaster prevention and control, and in particular to a rapid gas deflation and structural protection coordinated device based on a mine gas sealing wall. Background Art

[0002] my country's energy endowment is characterized by being rich in coal, poor in oil, and little in natural gas. This fundamental national condition dictates coal's central position in the energy system. In the energy transition period of the next 20-30 years, the strategic value of coal will be further highlighted. As the "bottom line" for energy security, its irreplaceable nature has been deeply integrated into national energy strategic planning. Precisely based on this reality, my country's energy structure will remain coal-dominated for a long time, continuing to shoulder the dual missions of ensuring energy security and driving economic development, becoming a stable foundation for social progress.

[0003] With the continuous advancement of coal resource extraction, complex and changing geological conditions have become a major challenge that the coal production industry must face. Many mines are experiencing a significant shift from low-gas to high-gas conditions. This trend not only greatly increases the difficulty of mining but also poses a series of serious safety hazards, such as excessive gas concentration in the upper corners, sudden increases in gas outbursts, and localized gas accumulation. In particular, excessive gas concentration in the upper corners, if not promptly and effectively controlled, will have a significant impact on gas concentrations at the working face, posing a serious threat to the safe working environment of the entire mine.

[0004] In view of this, the industry generally recognizes and adopts the advanced technology of mine-sealed gas walls to implement precise and efficient sealing of areas with excessive gas in the upper corners. The implementation of this strategy can not only effectively cut off the diffusion path of gas from the excessive area to the working face, ensuring that the gas concentration in the working area is always maintained within the safety standard, providing an indispensable guarantee for the life safety of underground personnel and the stable operation of equipment; at the same time, the precise sealing of mine gas walls is also an important cornerstone for improving mine mining efficiency and promoting efficient and green production. However, in actual operation, the current mine-sealed gas walls still have shortcomings. On the one hand, there is a lack of complete gas wall protection facilities. Due to the lack of professionalism of mine workers, workers begin to advance the gas wall when most of the gas is still retained. As a result, the gas wall is scratched by certain sharp objects in the roadway during the advancement process, which not only causes the loss of the gas wall, but also greatly affects the production efficiency of the coal mine. On the other hand, the gas wall deflation time is too long, which seriously affects the production progress in actual use. Summary of the Invention

[0005] The purpose of the present invention is to overcome the problems in the prior art and provide a rapid gas deflation and structural protection coordinated device based on a mine-used gas wall to prevent the gas wall body from being damaged during movement and affecting the construction progress.

[0006] The invention provides a rapid gas deflation and structural protection coordinated device based on a mine-used gas blocking wall, comprising a gas wall body, comprising an inner liner and an outer liner, a pair of horizontal slide rail grooves and a pair of vertical slide rail grooves are provided between the inner liner and the outer liner interlayer, the horizontal slide rail groove is a trapezoidal groove without baffles, and the vertical slide rail groove is a trapezoidal groove with baffles, the gas wall body is provided with an inflation hole and a gas deflation hole, and also comprises a gas wall protection component, comprising a horizontal protection component and a vertical protection component, the horizontal protection component is slidably connected to the horizontal slide rail groove, the vertical protection component is slidably connected to the vertical slide rail groove, the horizontal protection component and the vertical protection component wrap the gas wall body, and the adjacent interfaces of the horizontal protection component and the vertical protection component are connected by a positioning device, and also comprises a deflation component, comprising a conveying pipe and a clamp, the deflation hole at one end of the conveying pipe is threadedly connected, a hole is drilled on the gas extraction pipeline, and the other end of the conveying pipe is inserted into the drilled hole of the gas extraction pipeline and fixed by the clamp.

[0007] Preferably, the inner liner and the outer liner are both made of aramid fiber reinforced nitrile rubber composite material.

[0008] Preferably, the horizontal protection assembly includes a pair of horizontally arranged first protection air walls, and a first slider is provided on one side of the pair of first protection air walls close to the outer bladder, and the first slider is slidably connected to the horizontal slide rail groove.

[0009] Preferably, the vertical protective assembly includes a pair of vertically arranged second protective air walls, and a pair of the second protective air walls are each provided with a second slider close to the side of the outer liner, the second slider is slidably connected to the vertical slide rail groove, the upper end of the vertical slide rail groove is provided with a first limit baffle, and the second protective air wall and the first protective air wall are matched at the joint position. The second slider slides from top to bottom into the vertical slide rail groove and fits with the first limit baffle at the top, and the first slider slides into one end of the horizontal slide rail groove and fits with the second limit baffle.

[0010] Preferably, the positioning device includes an outer sleeve, a positioning cylinder, a start button, an in-situ slot, a locking device, a reset button and a retractable fixed ball. The tops of the two protective air walls are provided with positioning holes matching the positioning cylinder. The positioning cylinder is inserted into the outer sleeve. The end of the positioning cylinder is fixedly connected to the start button. A reset spring is sleeved on the positioning cylinder. A retractable fixed ball is provided at the end of the positioning cylinder away from the start button. The locking device is provided on the positioning cylinder. A positioning slot is provided on the outer sleeve. A reset button is vertically slidably inserted into the positioning slot.

[0011] Preferably, the clamp is a DN50 type clamp, the delivery pipeline uses a PE hose with an inner diameter of 50 mm, and after the air is deflated, a safety valve is installed at the drilled hole opened on the extraction pipeline.

[0012] Preferably, the inner diameter of the air release hole is larger than the inner diameter of the air filling hole.

[0013] Preferably, the thickness of the inner liner of the air wall body, the horizontal protective air wall and the vertical protective air wall is 5cm-8cm.

[0014] Compared with the prior art, the beneficial effects of the present invention are: a rapid degassing and structural protection coordinated device based on a mine-used gas wall of the present invention protects the gas wall body through the set horizontal protection assembly and vertical protection assembly to avoid damage to the gas wall body caused by hitting sharp objects when the gas wall body is moved, and the horizontal protection assembly and the vertical protection assembly are detachably installed through the horizontal slide rail groove and the vertical slide rail groove respectively, so as to be replaced at any time. First, the gas extraction pipeline is drilled, and then the hollow threaded pipe joint is threadedly connected to the degassing hole of the main type mine-used gas wall, and then another section of the pipe is inserted into the drilled hole and connected with a clamp. At the same time, the negative pressure environment of the gas extraction pipeline is used to quickly degas the main type mine-used gas wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the use of the rapid gas deflation and structural protection coordinated device based on the mine-used gas blocking wall of the present invention.

[0016] Figure 2 It is a schematic diagram of the explosion structure in which the horizontal protection assembly, the vertical protection assembly and the air wall body are connected.

[0017] Figure 3 It is a schematic structural diagram of the horizontal protection component of the present invention.

[0018] Figure 4 It is a schematic structural diagram of the vertical protection assembly of the present invention.

[0019] Figure 5 It is a structural schematic diagram of the positioning device of the present invention.

[0020] Figure 6 It is a schematic structural diagram of the deflation component of the present invention.

[0021] Explanation of the accompanying drawings: 1. Air wall body; 101. Inner liner; 102. Outer liner; 2. Horizontal slide rail groove; 3. Vertical slide rail groove; 4. Horizontal protection assembly; 41. First protective air wall; 42. First slider; 5. Vertical protection assembly; 51. Second protective air wall; 52. Second slider; 53. First limit baffle; 54. Second limit baffle; 6. Positioning device; 61. Outer sleeve; 62. Positioning cylinder; 63. Start button; 64. In-situ slot; 65. Positioning device; 66. Reset button; 67. Retractable fixing ball; 68. Reset spring; 610. Positioning slot; 69. Positioning hole; 7. Deflating assembly; 71. Delivery pipe; 72. Clamp; 8. Deflating hole; 9. Inflation hole. DETAILED DESCRIPTION

[0022] The following is combined with Figures 1 to 6 In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meanings understood by people with ordinary skills in the field to which the present invention belongs.

[0023] The words "first", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, but do not exclude other elements or objects. "Inside", "outside", "upper", "lower", "far", "near", "front", "back" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. The drawings in the present invention are not drawn strictly according to the actual scale. The specific size and quantity of each structure can be determined according to actual needs. The drawings described in the present invention are only structural schematic diagrams.

[0024] The present invention provides a rapid gas release and structural protection coordinated device based on a mine-used gas blocking wall, such as Figures 1 to 6As shown, it includes: an air wall body 1, including an inner liner 101 and an outer liner 102, a pair of horizontal slide rail grooves 2 and a pair of vertical slide rail grooves 3 are provided on the outside of the outer liner 102, the horizontal slide rail groove 2 is a trapezoidal groove without a baffle, and the vertical slide rail groove 3 is a trapezoidal groove with a baffle, and the outer liner 102 is provided with an inflation hole 9 and an air release hole 8, and also includes an air wall protection component, including a horizontal protection component 4 and a vertical protection component 5, the horizontal protection component 4 is slidably connected to the horizontal slide rail groove 2, and the vertical protection component 5 is slidably connected to the vertical slide rail groove 3, the horizontal protection component 4 and the vertical protection component 5 wrap the outer liner 102, and the adjacent horizontal protection components 4 and vertical protection components 5 are connected at the interface by a positioning device 6, and also include a degassing component 7, including a conveying pipe 71 and a clamp 72, the degassing hole 8 at one end of the conveying pipe 71 is threadedly connected, and a hole is drilled on the gas extraction pipeline. The other end of the conveying pipe 71 is inserted into the drilled hole of the gas extraction pipeline and fixed by a clamp 72.

[0025] In this embodiment, the horizontal protection assembly 4 and the vertical protection assembly 5 are provided to protect the air wall body 1, so as to prevent the air wall body 1 from being damaged by sharp objects when the air wall body 1 is moved, so that it can be replaced at any time. It is equivalent to connecting a protective cover to the wall. When a sharp object appears, even if it is scratched, only the horizontal protection assembly 4 and the vertical protection assembly 5 are damaged, and the air wall body 1 is not damaged. The damaged part can be replaced with a spare part. The horizontal protection assembly 4 and the vertical protection assembly 5 are detachably installed through the horizontal slide rail channel 2 and the vertical slide rail channel 3 respectively, and are connected by the respective positioning devices 6 of the main body and the structural protection device, so that the air walls have good airtightness and the operation of replacing the device is also convenient and simple; This application proposes to first drill a hole in the gas extraction pipeline, then thread the hollow threaded pipe joint with the vent hole 8 of the outer shell 102, and then insert another section of the pipeline into the drilled hole and connect it with a clamp 72. At the same time, the negative pressure environment of the gas extraction pipeline is used to quickly deflate the main mining gas wall.

[0026] Preferably, Figure 1 As shown, the inner liner 101 and the outer liner 102 are both made of aramid fiber reinforced nitrile rubber composite material.

[0027] The inner liner 101 adopts the common mining gas wall structure that has been verified by long-term practice and is mature and reliable. It can stably bear the internal gas pressure and ensure that the basic sealing function of the gas wall is realized. The material of the outer liner 102 has been strictly screened many times, and finally the aramid fiber reinforced nitrile rubber with a high friction coefficient and super wear resistance was selected. The high strength and high modulus properties of aramid fiber are combined with the good elasticity and oil resistance of nitrile rubber, so that the outer liner 102 has sufficient flexibility to adapt to the deformation requirements of the gas wall during installation and use, and has an extremely high friction coefficient. It can maintain stable friction on the rough and irregular tunnel wall surface underground, preventing the gas wall from being displaced by external forces. At the same time, its super wear resistance ensures that the outer liner 102 can remain intact for a long time under harsh working conditions such as frequent friction with the tunnel wall and possible impact with waste rock, effectively extending the service life of the gas wall and reducing maintenance costs.

[0028] Preferably, Figure 3 As shown, the horizontal protection assembly 4 includes a pair of horizontally arranged first protection air walls 41 , and a first slider 42 is provided on the side of the pair of first protection air walls 41 close to the outer liner 102 , and the first slider 42 is slidably connected to the horizontal slide rail channel 2 .

[0029] In this embodiment, the horizontal protection assembly 4 is mounted on the air wall body 1 via a horizontal slide rail channel 2. The trapezoidal shape of the horizontal slide rail channel 2 provides a three-dimensional positioning guide for the horizontal protection assembly 4. The horizontal slide rail channel 2 is symmetrically arranged on either side of the air wall. The track spacing is determined by the thickness of the air wall body 1. No limit baffles are provided on either side of the channel. Furthermore, the material selection for the dual-track slide rail channel takes into account factors such as lightness and corrosion resistance.

[0030] The vertical air wall structure protection device is equipped with a slider for connecting the slide rails to the main mining sealing air wall. At the same time, one side of the vertical air wall structure protection device is provided with a large double-track slide rail groove and 62 positioning cylinder holes, and the other side is provided with a limit baffle to prevent the horizontal air wall structure protection device from sliding.

[0031] Preferably, Figure 4 As shown, the vertical protective assembly 5 includes a pair of vertically arranged second protective air walls 51, and a pair of second protective air walls 51 are each provided with a second slider 52 near the side of the air wall body 1. The second slider 52 is slidably connected to the vertical slide rail groove 3, and a first limit baffle 53 is provided at the upper end of the vertical slide rail groove. A second limit baffle 54 is provided at the joint of the second protective air wall 51 and the first protective air wall 41. The second slider 52 slides from top to bottom into the vertical slide rail groove and fits with the first limit baffle 53 at the top, and the first slider 42 slides into the horizontal slide rail groove 2 at one end and fits with the second limit baffle 54.

[0032] In this embodiment, the vertical protection component 5 is installed on the air wall body 1 through the vertical slide rail groove 3. The groove of the vertical slide rail groove 3 is a trapezoidal groove, and the bottom length of the lower trapezoidal groove is slightly smaller than the upper bottom of the horizontal double-track slide rail groove, so that the vertical slide rail connection is not affected by the horizontal direction. The rail spacing depends on the thickness of the air wall body 1. At the same time, a limit baffle is provided on one side of the vertical double-track slide rail groove to limit the sliding of the vertical protection component 5. When selecting materials for the double-track slide rail groove, factors such as lightness and corrosion resistance should be considered. An extra set of vertical protection components 5 and horizontal protection components 4 are often prepared for replacement.

[0033] Preferably, Figure 5 As shown, the positioning device 6 includes an outer sleeve 61, a positioning cylinder 62, a start button 63, an in-situ slot 64, a locking device 65, a reset button 66 and a retractable fixed ball 67. A positioning circular hole matching the positioning cylinder 62 is provided on the top of the two protective air walls. The positioning cylinder 62 is inserted into the outer sleeve 61. The end of the positioning cylinder 62 is fixedly connected to the start button 63. A reset spring 68 is sleeved on the positioning cylinder 62. A retractable fixed ball 67 is provided at the end of the positioning cylinder 62 away from the start button 63. The positioning cylinder 62 is provided with a locking device 65. A positioning slot 610 is provided on the outer sleeve 61. A reset button 66 is vertically slidably inserted in the positioning slot 610.

[0034] In this embodiment, when installing the horizontal protection assembly 4 and the vertical protection assembly 5, the start button 63 is pressed to advance the positioning cylinder 62. At this time, the locking device 65 moves from the original slot 64 to the positioning slot 610. At the same time, part of the positioning cylinder 62 enters the positioning hole and the retractable fixing ball 67 (the ball is made of TPE material) pops out, thus completing the connection. When the horizontal protection component 4 or the vertical protection component 5 is damaged, pressing the reset button 66 causes the inner sleeve of the positioning device 6 to shrink rapidly, and the locking device 65 returns to the original slot 64. At the same time, the fixed ball is also retracted into the inner sleeve, so that the damaged air wall structure protection device can be immediately removed and replaced.

[0035] Preferably, Figure 6 As shown, the clamp 72 is a DN50 type clamp 72, and the conveying pipeline 71 uses a PE hose with an inner diameter of 50 mm. After the degassing is completed, a safety valve is installed at the drilled hole opened on the extraction pipeline. The inner diameter of the degassing hole 8 is larger than the inner diameter of the filling hole 9. The thickness of the inner liner 101 of the gas wall body 1, the horizontal protective gas wall and the vertical protective gas wall are all 5cm-8cm.

[0036] In this embodiment, the vent hole 8 adopts a threaded design and is connected to the vent pipe for rapid venting of the gas in the gas wall; the inflation hole 9 is a commonly used air hole setting of the gas wall for inflation. The material selection of the inner and outer liners 102 in the horizontal protection component 4 and the vertical protection component 5 is consistent with the conventional inner and outer liners 102 materials of the gas wall body 1. In terms of structural parameters, the thickness of the inner liners 101 is optimized to a range of 5-8 cm by searching for data. This design not only meets the requirements of tunnel deformation compensation, but also plays a protective role for the main mining blocking gas wall. Inflation is carried out by connecting the inflation pump under the mine to the inflation hole 9. Deflation is carried out by first drilling the gas extraction pipeline, then threading the hollow threaded pipe joint to the vent hole 8, and then inserting another section of the pipeline into the drilled hole and connecting it with a clamp 72. At the same time, the negative pressure environment of the gas extraction pipeline is used for rapid deflation.

[0037] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A rapid gas deflation and structural protection coordinated device based on a mine-used gas blocking wall, characterized in that: include: The air wall body (1) comprises an inner liner (101) and an outer liner (102), wherein a pair of horizontal slide rail grooves (2) and a pair of vertical slide rail grooves (3) are provided on the outer side of the outer liner (102), wherein the horizontal slide rail grooves (2) are trapezoidal grooves without baffles, and the vertical slide rail grooves (3) are trapezoidal grooves with baffles, and the outer liner (102) is provided with an air filling hole (9) and an air release hole (8); An air wall protection component comprises a horizontal protection component (4) and a vertical protection component (5), wherein the horizontal protection component (4) is slidably connected to the horizontal slide rail channel (2), and the vertical protection component (5) is slidably connected to the vertical slide rail channel (3), and the horizontal protection component (4) and the vertical protection component (5) wrap the outer bladder (102); A positioning device (6) connects the interface of the horizontal protection component (4) and the vertical protection component (5); The gas leakage component (7) comprises a delivery pipe (71) and a clamp (72), wherein one end of the delivery pipe (71) is threadedly connected to the gas leakage hole (8), a hole is drilled on the gas extraction pipeline, and the other end of the delivery pipe (71) is inserted into the drilled hole and fixed by the clamp (72).

2. The rapid gas deflation and structural protection coordinated device based on a mine-used gas blocking wall according to claim 1, characterized in that: The inner liner (101) and the outer liner (102) are made of aramid fiber reinforced nitrile rubber composite material.

3. The rapid gas deflation and structural protection coordinated device based on a mine-used gas blocking wall according to claim 1, characterized in that: The horizontal protection assembly (4) comprises a pair of horizontally arranged first protection air walls (41), each of the pair of first protection air walls (41) being provided with a first slide block (42) on one side close to the outer bladder (102), and the first slide block (42) being slidably connected to the horizontal slide rail channel (2).

4. The rapid gas deflation and structural protection coordinated device based on a mine-used gas blocking wall according to claim 3 is characterized in that: The vertical protection assembly (5) includes a pair of vertically arranged second protective air walls (51), and a second slider (52) is provided on one side of the pair of second protective air walls (51) close to the outer bladder (102). The second slider (52) is slidably connected to the vertical slide rail groove (3), and a first limit baffle (53) is provided at the upper end of the vertical slide rail groove (3). A second limit baffle (54) is provided at the joint between the second protective air wall (51) and the first protective air wall (41). The second slider (52) slides from top to bottom into the vertical slide rail groove (3) and fits with the first limit baffle (53). The first slider (42) slides into one end of the horizontal slide rail groove (2) and fits with the second limit baffle (54).

5. The rapid gas deflation and structural protection coordinated device based on a mine-used gas blocking wall according to claim 1, characterized in that: The positioning device (6) includes an outer sleeve (61), a positioning cylinder (62), a start button (63), an in-situ slot (64), a positioning device (65), a reset button (66) and a retractable fixed ball (67). The tops of the two protective air walls are provided with a positioning hole matching the positioning cylinder (62). The positioning cylinder (62) is inserted into the outer sleeve (61). The end of the positioning cylinder (62) is fixedly connected to the start button (63). A reset spring (68) is sleeved on the positioning cylinder (62). The end of the positioning cylinder (62) away from the start button (63) is provided with a retractable fixed ball (67). The positioning cylinder (62) is provided with the positioning device (65). The outer sleeve (61) is provided with a positioning slot (610). The reset button (66) is vertically slidably inserted into the positioning slot (610).

6. The rapid gas deflation and structural protection coordinated device based on a mine-used gas blocking wall according to claim 5, characterized in that: The clamp (72) is a DN50 type clamp (72), and the delivery pipeline (71) is a PE hose with an inner diameter of 50 mm. After the air is released, a safety valve is installed at the drilled hole opened on the extraction pipeline.

7. The rapid gas deflation and structural protection coordinated device based on a mine-used gas blocking wall according to claim 1, characterized in that: The inner diameter of the air release hole (8) is larger than the inner diameter of the air filling hole (9).

8. The rapid gas deflation and structural protection coordinated device based on a mine-used gas blocking wall according to claim 1, characterized in that: The thickness of the inner liner (101) of the air wall body (1), the horizontal protection assembly (4), and the vertical protection assembly (5) is 5 cm to 8 cm.

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