A new type of distributed gas extraction grouting hole sealing device for mine

Abstract

The present application relates to the technical field of gas extraction, and discloses a novel mine distributed gas extraction grouting hole sealing device, which comprises an extraction pipe and further comprises: a primary plugging module, a slurry limiting module, a supply module and a grouting module, wherein the primary plugging module comprises a first air bag arranged on the extraction pipe, and a constant-pressure exhaust module is arranged at the rear side of the first air bag; the slurry limiting module is arranged at the rear side of the first air bag and comprises a second air bag and a third air bag arranged on the extraction pipe, and a borehole heating module is arranged between the second air bag and the third air bag; the supply module is arranged outside the coal seam and comprises a slurry tank provided with coal tar, and a stirring and heating module is arranged in the slurry tank; the grouting module comprises a grouting pipe, and the coal tar is injected into the borehole between the second air bag and the third air bag through the grouting pipe, and the present application has the advantages that, compared with the prior art, the coal seam gap can be filled and sealed by filling the coal tar, and the hole sealing device and the extraction pipe can be recycled and reused.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas extraction, in particular to a novel mine distributed gas extraction grouting hole sealing device. BACKGROUND

[0002] Gas extraction refers to connecting the drill hole to a dedicated pipeline by drilling holes in the coal seam and goaf, using extraction equipment to extract the gas in the coal seam and goaf to the ground for utilization or discharge into the total return air flow. This process not only effectively reduces the gas emission during mining, prevents gas overrun and accumulation, and prevents gas explosion and coal and gas outburst accidents, but also develops and utilizes gas as a resource.

[0003] In gas extraction operations, a hole sealing device is needed to seal the hole between the extraction pipeline and the drill hole to prevent gas leakage to the outside. In existing gas extraction operations, a grouting hole sealing device is generally used for sealing, which is mostly a two-plugging and one-grouting hole sealing device, and uses concrete as the filling slurry. That is, after the extraction pipeline is placed in the coal seam drill hole, the two air bags are inflated to expand, and then the area between the two air bags is grouted, so that the filled concrete slurry penetrates into the coal seam gap and solidifies, thereby achieving the effect of solid sealing liquid and liquid sealing gas, effectively preventing the leakage of gas in the coal seam through the drill hole. However, this method uses concrete as the filling slurry, which is often tightly combined with the coal seam as a whole after the concrete solidifies, and fixes the extraction pipeline and the hole sealing device in the drill hole, making it impossible for construction personnel to recover them. In gas extraction operations, drill holes are relatively dense, and the number of extraction pipelines and hole sealing devices is large, so the inability to recover them will result in a large amount of waste of resources, and the extraction pipelines, hole sealing devices and solidified concrete abandoned in the coal seam will also affect subsequent coal seam mining, making coal seam mining more difficult. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a novel mine distributed gas extraction grouting hole sealing device that selects coal tar as the filling slurry and seals the hole by injecting heated coal tar, and after the gas extraction is completed, the coal tar between the hole sealing device and the drill hole is melted by heating to restore its fluidity, thereby recovering the hole sealing device and the extraction pipeline.

[0005] To solve the above technical problems, the technical solution provided by the present application is:

[0006] A novel mine distributed gas extraction grouting hole sealing device, comprising an extraction pipeline arranged in a drill hole in a coal seam, further comprising:

[0007] A primary plugging module comprising a first air bag sleeved on the extraction pipeline, and a constant pressure air exhaust module arranged at the rear side of the first air bag;

[0008] The slurry limiting module is arranged at the rear side of the first air bag and comprises a second air bag and a third air bag sleeved on the extraction pipe, and a hole heating module is arranged between the second air bag and the third air bag.

[0009] The supply module is arranged outside the coal seam and comprises a slurry tank provided with coal tar, and a stirring and heating module is arranged in the slurry tank.

[0010] The grouting module comprises a grouting pipe through which the coal tar is injected into the drill hole between the second air bag and the third air bag.

[0011] The constant-pressure exhaust module comprises a pressure relief valve and a back-blowing sleeve ring, the back-blowing sleeve ring is an annular cavity structure, is sleeved on the extraction pipe at the rear side of the first air bag, a large number of back-blowing holes are arranged on the rear side wall, the front side is connected with the first air bag through the pressure relief valve, and when the air pressure in the first air bag is relatively high, the gas is discharged through the pressure relief valve.

[0012] As an improvement, the hole heating module comprises an isolation sleeve pipe fixedly sleeved on the extraction pipe, the isolation sleeve pipe is an annular cavity structure with two ends connected with the second air bag and the third air bag respectively, the inner wall has heat insulation, the outer wall has heat conduction and the inner side is provided with a pipe wall heater, the two ends of the isolation sleeve pipe have heat conduction, and end heaters are arranged in the cavity at the two ends respectively.

[0013] As an improvement, the grouting module further comprises a grouting pump arranged below the slurry tank, the input end of the grouting pump is connected with the bottom of the slurry tank, the output end is provided with a backflow pipe, a three-way valve is arranged on the backflow pipe, the other end is arranged on the top of the side wall of the slurry tank, the grouting pipe is arranged in the cavity of the isolation sleeve pipe, one end of the grouting pipe is connected with a grouting nozzle arranged on the outer wall of the isolation sleeve pipe, and the other end penetrates through the third air bag and is connected with the three-way valve.

[0014] As an improvement, a medicine box is arranged in each of the second air bag and the third air bag, the medicine box is arranged at one end of the second air bag and the third air bag close to the isolation sleeve pipe, and corresponds to the end heater, sodium bicarbonate is arranged in the medicine box, and a box cover is arranged on the top of the medicine box, a large number of exhaust holes are arranged on the box cover, the sodium bicarbonate is heated by the end heater, a large amount of carbon dioxide gas is released by decomposition, and the second air bag and the third air bag are expanded.

[0015] As an improvement, a gas supply module is arranged at the rear side of the first air bag, the gas supply module comprises a wiring pipe and a gas supply pipe arranged in the wiring pipe, one end of the wiring pipe is arranged in the isolation sleeve pipe and connected with a wiring groove arranged in the isolation sleeve pipe, the other end penetrates through the third air bag, one end of the gas supply pipe is connected with the first air bag by penetrating through the second air bag, the other end is connected with a gas tank arranged below the slurry tank, and a wire is arranged in the wiring pipe.

[0016] As improvement, three-way joint is arranged on the gas supply pipe in the second gas bag and the third gas bag respectively, one-way air valve is arranged at the other end of the three-way joint, sealing box is arranged on the three-way joint in the third gas bag, and the one-way air valve passes through the side wall of the sealing box, after the second gas bag and the third gas bag are inflated, the excess gas enters the first gas bag through the gas supply pipe.

[0017] As improvement, the stirring and heating module comprises a stirring rod arranged in the slurry tank and a slurry heater arranged on the inner side wall of the slurry tank, and a stirring motor is arranged at the bottom of the slurry tank, and the driving shaft of the stirring motor is connected with the rotating shaft of the stirring rod.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] 1、The second gas bag and the third gas bag are used for sealing the filled slurry, so that the filled coal tar is limited between the second gas bag and the third gas bag and generates a certain pressure, penetrates into the coal seam gap and fills the gap, so that better sealing effect is achieved, the hole sealing effect is better, and the coal tar does not react with the coal seam during the hole sealing process, has little influence and is safer.

[0020] 2、The coal seam gap is filled and sealed by the filled coal tar, after the extraction is completed, the coal tar between the hole sealing device and the drill hole is melted by heating the coal tar, so that the flowability is restored, the hole sealing device and the extraction pipe are conveniently taken out and recycled, the recycling and reuse of the hole sealing device are realized, resource waste is smaller, it is more environmentally friendly, the remaining coal tar has little influence on the subsequent coal mining operation, and the coal tar can be recycled through the coal mining operation, and use is more convenient.

[0021] 3、The once-sealing module is arranged, the gas in the drill hole in the grouting area can be blown out before heating, the heating process is safer, and the excess gas generated by the decomposition of sodium bicarbonate under heat can be discharged into the cavity between the first gas bag and the second gas bag to form a high-pressure chamber, so that the gas in the drill hole of the coal seam is further sealed, and the sealing effect is better. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic diagram of the present application.

[0023] Figure 2 is a structural schematic diagram of the extraction pipe of the present application.

[0024] Figure 3 is a structural expansion schematic diagram of the extraction pipe of the present application.

[0025] Figure 4 is a sectional view of the extraction pipe of the present application Figure 1 .

[0026] Figure 5is the section view of the extraction pipe of the present application Figure 2 .

[0027] Figure 6 is the schematic view of the partial structure of the present application.

[0028] Figure 7 is the schematic view of the slurry limiting module of the present application.

[0029] Figure 8 is the section view of the primary plugging module of the present application.

[0030] Figure 9 is the schematic view of the mobile support module of the present application.

[0031] Figure 10 is the schematic view of the supply module of the present application.

[0032] Figure 11 is the schematic view of the grouting module of the present application.

[0033] Figure 12 is the schematic view of the stirring and heating module of the present application.

[0034] As shown in the figure:

[0035] 1, extraction pipe, 2, primary plugging module, 21, first air bag, 22, air supply module, 221, air supply pipe, 222, wiring pipe, 223, sealing box, 224, tee joint, 225, one-way air valve, 226, wiring groove, 23, constant pressure exhaust module, 231, backflushing ring, 232, pressure relief valve, 233, backflushing hole, 3, slurry limiting module, 31, second air bag, 32, third air bag, 33, medicine box, 34, box cover, 4, hole heating module, 41, isolation sleeve, 42, end heater, 43, pipe wall heater, 5, grouting module, 51, grouting pipe, 52, grouting nozzle, 53, grouting pump, 54, return pipe, 55, tee valve, 6, supply module, 61, slurry tank, 62, mobile base, 63, tank cover, 64, air tank, 65, battery one, 66, battery two, 7, stirring and heating module, 71, slurry heater, 72, stirring rod, 73, stirring motor, 8, mobile support module, 81, fixed ring, 82, sliding ring, 83, tension spring, 84, hinged rod, 85, elastic plate, 86, telescopic pipe. DETAILED DESCRIPTION

[0036] The present application will be further described in detail below with reference to the accompanying drawings.

[0037] The present application will be further described in detail below with reference to the accompanying drawings. Figure 1As shown, a new type of mine distributed gas extraction grouting hole sealing device, including set in the coal seam extraction pipe 1, arranged in the drill hole of coal seam, and one end open and arranged in the coal seam, the other end is provided with valve and set in the coal seam outside, through the pipeline connection, gas extraction, extraction pipe 1 is provided with a one-time plugging module 2, slurry limiting module 3 and hole heating module 4, slurry limiting module 3 is arranged on both sides of hole heating module 4, and hole heating module 4 is connected with supply module 6 arranged outside the coal seam through grouting module 5, supply module 6 is provided with stirring heating module 7, after heating coal tar slurry, coal tar is injected into the drill hole outside the hole heating module 4 through the grouting module 5, and grouting sealing is carried out.

[0038] In the above, the extraction pipe 1 is placed in the pre drilled coal seam drill hole, nitrogen is supplied to the one-time plugging module 2 through the supply module 6, the one-time plugging module 2 is used to seal the space between the extraction pipe 1 and the drill hole, the original gas in the drill hole behind the sealing place is discharged and replaced with nitrogen by back blowing through the drill hole, the hole heating module 4 is used to heat the drill hole, the slurry limiting module 3 is used to seal the two end regions of the hole heating module 4, after heating the coal tar slurry through the stirring heating module 7, the coal tar is injected into the drill hole outside the hole heating module 4 through the grouting module 5, and grouting sealing is carried out, and the coal tar is solidified after cooling to room temperature, so that the whole hole sealing operation is completed, and the space between the extraction pipe 1 and the drill hole is sealed.

[0039] As shown in the accompanying drawings Figure 2 , the accompanying drawings Figure 3 , the accompanying drawings Figure 4 , the accompanying drawings Figure 7 As shown, the hole heating module 4 includes an isolation sleeve 41 fixed on the extraction pipe 1, the isolation sleeve 41 is an annular cavity structure, the inner wall has heat insulation, the two ends and the outer wall have heat conductivity, and the cavities at the two ends are respectively provided with end heaters 42, the inner side of the outer wall is provided with a pipe wall heater 43, the end heaters 42 and the pipe wall heater 43 are both C-shaped and mirror image arranged on both sides of the inner cavity of the isolation sleeve 41, on the other hand, the end heaters 42 and the pipe wall heater 43 are both provided with temperature sensors and temperature controllers, so as to realize constant temperature heating.

[0040] As shown in the accompanying drawings Figure 1 , the accompanying drawings Figure 10 , the accompanying drawings Figure 11 As shown, the supply module 6 includes a slurry tank 61, the top of the slurry tank 61 is open, and the tank cover 63 is hingedly arranged, the bottom is provided with a movable base 62, the coal tar slurry is arranged in the slurry tank 61, and the movable base 62 below the slurry tank 61 is provided with a battery one 65, a battery two 66, a gas supply tank 64 and a grouting module 5.

[0041] As shown in the accompanying drawingsFigure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 5 Appendix Figure 7 Appendix Figure 11 As shown, the grouting module 5 includes a grouting pump 53 located below the grout tank 61 and a grouting pipe 51 located in the cavity of the isolation sleeve 41. The grouting pump 53 is an air pump, and its input end is connected to the bottom of the grout tank 61. Its output end is provided with a return pipe 54, and a three-way valve 55 is provided on the return pipe 54. The other end is located on the top of the side wall of the grout tank 61. One end of the grouting pipe 51 is connected to the grouting nozzle 52 located on the outer wall of the isolation sleeve 41, and the other end is connected to the three-way valve 55.

[0042] Combined with appendix Figure 1 Appendix Figure 10 Appendix Figure 12 As shown, the stirring and heating module 7 includes a stirring rod 72 and a slurry heater 71 disposed in the slurry tank 61. The slurry heater 71 is arranged on the inner side wall of the slurry tank 61. A stirring motor 73 is disposed at the bottom of the slurry tank 61. The drive shaft of the stirring motor 73 is connected to the rotating shaft of the stirring rod 72.

[0043] In the above description, the supply module 6 supplies nitrogen to the primary sealing module 2 through the gas supply tank 64, supplies power to the stirring and heating module 7 and the grouting module 5 through battery one 65, and supplies power to the in-hole heating module 4 through battery two 66. After the slurry heater 71 heats the coal tar slurry in the slurry tank 61, the stirring motor 73 is started, and the stirring rod 72 rotates to stir the coal tar slurry, so that the coal tar slurry in the slurry tank 61 is evenly heated and completely melted, forming... For fluids with high fluidity, start the grouting pump 53 and switch the three-way valve 55 to the grouting pipe 51 to inject the coal tar slurry into the borehole through the grouting pipe 51. After grouting is completed, switch the three-way valve 55 to the return pipe 54 to allow the coal tar slurry to flow back into the slurry tank 61 for circulation and heating, preventing some of the slurry from cooling and solidifying in the grouting pump 53. After the operation is completely completed, pump all the coal tar slurry in the slurry tank 61 out to the empty tank through the grouting pump 53.

[0044] Combined with appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 7As shown, the slurry limiting module 3 includes a second air bag 31 and a third air bag 32 sleeved on the extraction pipe 1, the second air bag 31 is arranged between the first air bag 21 and the isolation sleeve 41 and connected with one end of the isolation sleeve 41, the third air bag 32 is arranged at the rear side of the isolation sleeve 41 and connected with the other end of the isolation sleeve 41, a medicine box 33 is arranged in the second air bag 31 and the third air bag 32 respectively, the medicine box 33 is arranged at one end of the second air bag 31 and the third air bag 32 close to the isolation sleeve 41 and arranged corresponding to the position of the end heater 42, sodium bicarbonate is arranged in the medicine box 33 and a box cover 34 is arranged on the top of the medicine box 33, a large number of exhaust holes are arranged on the box cover 34, the first air bag 21, the second air bag 31 and the third air bag 32 are made of high-temperature resistant material, and the medicine in the medicine box 33 can be replaced.

[0045] In the above, after the end heater 42 is turned on, the medicine box 33 is heated through the two ends of the isolation sleeve 41 respectively, the internal sodium bicarbonate solid medicament is decomposed by heat, a large amount of carbon dioxide gas is released, the second air bag 31 and the third air bag 32 are inflated, the drill holes at the front and rear ends of the isolation sleeve 41 are plugged, so that the filled coal tar slurry is limited between the second air bag 31 and the third air bag 32, a certain pressure is provided for the coal tar slurry in the drill hole, the coal tar slurry is filled into the cracks of the surrounding coal seam, and the sealing effect is optimized.

[0046] The drawings are attached Figure 1 , the drawings are attached Figure 2 , the drawings are attached Figure 3 , the drawings are attached Figure 5 , the drawings are attached Figure 6 , the drawings are attached Figure 8As shown, the primary plugging module 2 includes a first gas bag 21 sleeved on the extraction pipe 1, which is arranged at the front side of the isolation sleeve 41, and a constant pressure exhaust module 23 is arranged at the rear side, and the first gas bag 21 is connected with the gas supply tank 64 through a gas supply module 22. Specifically, the constant pressure exhaust module 23 includes a pressure relief valve 232 and a backflushing sleeve ring 231, the backflushing sleeve ring 231 is a ring cavity structure, and is sleeved on the extraction pipe 1 at the rear side of the first gas bag 21, a large number of backflushing holes 233 are arranged on the rear side wall, and the front side is connected with the first gas bag 21 through the pressure relief valve 232. The gas supply module 22 includes a wiring pipe 222 and a gas supply pipe 221 arranged in the wiring pipe 222, one end of the wiring pipe 222 is arranged in the isolation sleeve 41 and connected with a wiring groove 226 arranged in the isolation sleeve 41, the other end passes through the third gas bag 32, one end of the gas supply pipe 221 passes through the second gas bag 31 and is connected with the first gas bag 21, the other end is provided with a valve and is connected with the gas supply tank 64, three-way joints 224 are arranged on the gas supply pipe 221 in the second gas bag 31 and the third gas bag 32 respectively, one-way air valves 225 are arranged at the other ends of the three-way joints 224, sealing boxes 223 are arranged in the third gas bag 32 corresponding to the three-way joints 224, and the one-way air valves 225 pass through the side walls of the sealing boxes 223, wires are arranged in the wiring pipe 222, one end of the wires is connected with the hole heating module 4 through the wiring groove 226, the other end is provided with a plug and is connected with the battery two 66, and the wiring pipe 222, the gas supply pipe 221 and the grouting pipe 51 are sealed when passing through the gas bags.

[0047] In the above, the hole heating module 4 is connected with the battery two 66 through the wires arranged in the wiring pipe 222, nitrogen is filled into the first gas bag 21 after the valve of the gas supply pipe 221 and the gas supply tank 64 is opened, the first gas bag 21 expands rapidly to block the extraction pipe 1 and the borehole, and when the internal gas pressure is greater than the set value of the pressure relief valve 232, the excess gas is discharged into the backflushing sleeve ring 231 through the pressure relief valve 232 and is discharged through the backflushing holes 233 to backflush the original gas in the borehole at the rear side of the first gas bag 21, preventing some components in the original gas from affecting the hole heating module 4, when the end heater 42 is started to make the second gas bag 31 and the third gas bag 32 expand rapidly, the excess gas generated by the decomposition of sodium bicarbonate is injected into the first gas bag 21 through the one-way air valve 225 and the three-way joint 224, and then is discharged through the constant pressure exhaust module 23 into the cavity between the first gas bag 21 and the second gas bag 31 to increase the gas pressure in the cavity, and the positive pressure forms a gas seal to seal the gas in the borehole, the gas pressures in the first gas bag 21, the second gas bag 31 and the third gas bag 32 are the same after being connected through the gas supply pipe 221, and are equal to the set pressure of the pressure relief valve 232.

[0048] The drawings will be described in conjunction with the Figure 2 , the drawings will be described in conjunction with the Figure 9As shown, the extraction pipe 1 is provided with a moving support module 8, which is provided with two groups and is arranged at the front side of the first air bag 21 and the rear side of the third air bag 32, respectively. The moving support module 8 comprises a fixed ring 81 fixedly sleeved on the extraction pipe 1 and a sliding ring 82 slidingly arranged on the extraction pipe 1. An extension pipe 86 is arranged between the fixed ring 81 and the sliding ring 82, and a tension spring 83 is arranged in the extension pipe 86. The two ends of the tension spring 83 are connected with the fixed ring 81 and the sliding ring 82, respectively. The fixed ring 81 and the sliding ring 82 are respectively hingedly provided with hinged rods 84, and the hinged rods 84 are uniformly arranged at six positions in the circumferential direction on the fixed ring 81 and the sliding ring 82, respectively. Elastic plates 85 are arranged between the two hinged rods 84, respectively. The elastic plate 85 is an elastic structure, and is bent outwardly under the action of the tension spring 83 and abuts against the inner wall of the borehole.

[0049] In the above description, the extraction pipe 1 is arranged in the borehole of the coal seam. During the process, the hole heating module 4 and other structures have a large weight. The moving support module 8 is used to abut the elastic plates 85 against the inner wall of the borehole, so as to support the extraction pipe 1, thereby reducing the influence of the self weight on the arrangement of the extraction pipe 1, reducing the contact area between the extraction pipe 1 and the borehole, reducing the frictional resistance, making the arrangement process more labor-saving and convenient, preventing the first air bag 21, the second air bag 31 and the third air bag 32 and other parts from being scratched and rubbed with the inner wall of the borehole, preventing the surface of the air bags from being damaged and increasing the service life. On the other hand, the moving support module 8 can adjust the bending degree of the elastic plates 85 through the extension and contraction of the tension spring 83, so as to adjust the overall diameter of the moving support module 8, thereby facilitating the adaptation to different size boreholes and the passing through of the grouting area.

[0050] When the gas extraction operation is completed and needs to be recovered, the pipe wall heater 43 is started to heat the condensed coal tar outside the isolation sleeve 41, so that it is partially melted to restore a certain fluidity. The outer end of the gas supply pipe 221 is connected with the vacuum pump, the valve of the gas supply pipe 221 is opened, and the gas is extracted through the gas supply pipe 221, so that the gas in the first air bag 21, the second air bag 31 and the third air bag 32 is extracted to vacuum, and the first air bag 21, the second air bag 31 and the third air bag 32 are completely compressed and tightly wrapped on the extraction pipe 1. After most of the coal tar slurry is melted, the extraction pipe 1 is extracted by using the fluidity. Finally, the recovered extraction pipe 1 and the like are uniformly cleaned, thereby facilitating the reuse thereof.

[0051] In the implementation of the present application, the contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0052] Working principle of the present application: the present application uses coal tar as filling slurry to carry out grouting and hole sealing, uses its state and fluidity at different temperatures to realize the recovery of part of the extraction pipe 1 and the like, and for this purpose, the hole heating module 4 and the stirring heating module 7 are arranged to heat the coal tar. The coal tar is a black or dark brown viscous liquid generated in the dry distillation process of coal, and is an important by-product of the coking industry. It does not react with the coal seam and is often used as a coal seam adhesive. It has a self-ignition point of 580-630℃ without a fire source, is relatively safe, and by heating the coal tar to a certain temperature (about 90℃), it becomes a liquid with sufficient fluidity, thereby carrying out grouting and filling. After the coal tar is heated and melted, its fluidity is used for recovery, and after the coal tar condenses to room temperature, it changes into a viscous liquid or solid with poor fluidity, thereby sealing and plugging the void. At the same time, by using its heating temperature (about 90℃), sodium bicarbonate is heated (sodium bicarbonate decomposition temperature 80℃), so that it decomposes and releases a large amount of carbon dioxide, causing the second air bag 31 and the third air bag 32 to inflate and expand, thereby plugging the two ends of the grouting area and limiting the slurry between the second air bag 31 and the third air bag 32.

Claims

1. A new type of mine distributed gas extraction grouting hole sealing device, comprising an extraction pipe (1) arranged in a drill hole of a coal seam, characterized in that, Also include: One plugging module (2) including a first gas bag (21) sleeved on the extraction pipe (1), a constant pressure exhaust module (23) is arranged at the rear side of the first gas bag (21); The slurry limiting module (3) is arranged at the rear side of the first gas bag (21), including a second gas bag (31) and a third gas bag (32) sleeved on the extraction pipe (1), and a hole heating module (4) is arranged between the second gas bag (31) and the third gas bag (32); The supply module (6) is arranged outside the coal seam, including a slurry tank (61) provided with coal tar, and a stirring heating module (7) is arranged in the slurry tank (61); The grouting module (5) includes a grouting pipe (51), and the coal tar is injected into the drill hole between the second gas bag (31) and the third gas bag (32) through the grouting pipe (51); The constant pressure exhaust module (23) includes a pressure relief valve (232) and a backflushing sleeve ring (231), the backflushing sleeve ring (231) is an annular cavity structure, is sleeved on the extraction pipe (1) at the rear side of the first gas bag (21), and a large number of backflushing holes (233) are arranged on the rear side wall, and the front side is connected with the first gas bag (21) through the pressure relief valve (232).

2. The novel mine distributed gas extraction and grouting hole sealing device according to claim 1, characterized in that: The hole heating module (4) includes an isolation sleeve (41) sleeved and fixed on the extraction pipe (1), the isolation sleeve (41) is an annular cavity structure with two ends connected with the second gas bag (31) and the third gas bag (32) respectively, and the inner wall has heat insulation, the outer wall has heat conductivity and the inner side is provided with a pipe wall heater (43).

3. The novel mine-used distributed gas extraction and grouting hole packer according to claim 2, characterized in that: The grouting module (5) further includes a grouting pump (53) arranged below the slurry tank (61), the input end of the grouting pump (53) is connected with the bottom of the slurry tank (61), the output end is provided with a return pipe (54), a three-way valve (55) is arranged on the return pipe (54), the other end is arranged on the top of the side wall of the slurry tank (61), the grouting pipe (51) is arranged in the chamber of the isolation sleeve (41), one end of the grouting pipe (51) is connected with the grouting nozzle (52) arranged on the outer wall of the isolation sleeve (41), and the other end penetrates through the third gas bag (32) and is connected with the three-way valve (55).

4. The novel mine distributed gas extraction and grouting hole sealing device according to claim 2, characterized in that: The second gas bag (31) and the third gas bag (32) are respectively provided with a medicine box (33), and the medicine box (33) is arranged at one end of the second gas bag (31) and the third gas bag (32) close to the isolation sleeve (41), the medicine box (33) is provided with sodium bicarbonate, and the top is provided with a box cover (34), and a large number of exhaust holes are arranged on the box cover (34).

5. The novel mine distributed gas extraction and grouting hole sealing device according to claim 4, characterized in that: The isolation sleeve (41) has heat conductivity at both ends, and end heaters (42) are arranged in the cavity at both ends corresponding to the medicine box (33).

6. The novel mine distributed gas extraction and grouting hole sealing device according to claim 2, characterized in that: The first air bag (21) rear side is provided with a gas supply module (22), the gas supply module (22) includes wiring tube (222) and the gas supply pipe (221) arranged in wiring tube (222), wiring tube (222) one end is arranged in the isolation sleeve (41), and with the wiring groove (226) arranged in the isolation sleeve (41) is connected, the other end passes through the third air bag (32) and is arranged, the gas supply pipe (221) one end passes through the second air bag (31) and is connected with the first air bag (21), the other end is connected with the gas supply tank (64) arranged below the slurry tank (61), the wire is arranged in wiring tube (222).

7. The novel mine-used distributed gas extraction and grouting hole packer according to claim 6, characterized in that: The gas supply pipe (221) in the second air bag (31) and the third air bag (32) is respectively provided with a three-way joint (224), the other end of the three-way joint (224) is provided with a one-way air valve (225), the wiring tube (222) is provided with a sealing box (223) in the third air bag (32) corresponding to the three-way joint (224), and the one-way air valve (225) passes through the side wall of the sealing box (223) and is arranged.

8. The novel mine distributed gas extraction and grouting hole sealing device according to claim 1, characterized in that: The stirring heating module (7) includes the stirring rod (72) and the slurry heater (71) arranged in the slurry tank (61), the slurry heater (71) is arranged on the inner side wall of the slurry tank (61), the slurry tank (61) bottom is provided with the stirring motor (73), and the stirring motor (73) driving shaft is connected with the stirring rod (72) rotating shaft.

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