Disaster prevention system based on mine safety production

Abstract

The invention discloses a disaster prevention system based on mine safety production, and the system comprises a movable guide rail which is parallel to the direction of a coal face and is disposed at an upper corner area, and the movable guide rail is provided with a second gas sensor; the gas monitoring rods are respectively arranged in a goaf and a roadway roof, each gas monitoring rod comprises a fixing frame, a double-layer barrel rod is arranged on the fixing frame, the double-layer barrel rod is sleeved with ventilation barrels which are axially arranged, the ventilation barrels are connected with a monitoring system through guide pipes, and an outer barrel cavity and an inner barrel cavity of the double-layer barrel rod are respectively connected with a gas replacement tank and a gap filling tank.

Description

Technical Field

[0001] The present invention relates to the technical field of mine disaster prevention, and in particular to a disaster prevention system based on mine production safety. Background Art

[0002] During coal mining, gas easily accumulates in goafs and roadway roofs. Upper corners, where ventilation dead zones exist, often pose a risk of excessive gas levels. Traditional monitoring methods rely primarily on fixed-position gas sensors, making it difficult to dynamically track gas concentration distribution and flow trends within goafs and roadway roofs. This results in delayed identification of the source of gas anomalies.

[0003] Existing technologies make it difficult to maintain goaf airtightness and replace gas. Furthermore, it's impossible to accurately determine whether fluctuations in gas concentration in the upper corner are caused by goaf leakage or seepage from roof cracks, significantly limiting the accuracy and timeliness of disaster warnings.

[0004] Therefore, it is necessary to provide a disaster prevention system based on mine safety production to solve the problems raised in the above background technology. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: a disaster prevention system based on mine safety production, comprising:

[0006] A movable guide rail is parallel to the direction of the coal mining working face and is arranged in the upper corner area, and a gas sensor 2 is installed on the movable guide rail;

[0007] Gas monitoring rods are arranged in goafs and tunnel roofs respectively. The gas monitoring rods include a fixed frame on which a double-layer tube rod is installed. The double-layer tube rod is covered with an axially arranged air-permeable tube on the outside. The air-permeable tube is connected to the monitoring system through a conduit. The outer tube cavity and inner tube cavity of the double-layer tube rod are respectively connected to a gas replacement tank and a gap filling tank.

[0008] Furthermore, as a preference, an axially penetrating pipe is provided in the wall of the air cylinder, and the air cylinder comprises a ring cylinder one, a filter cylinder and a ring cylinder two which are connected in sequence, the conduit is connected to the filter cylinder through the pipe in the ring cylinder two, and the pipes on the ring cylinder one and the ring cylinder two which are not penetrated by the conduit are blocked by a blocking rod.

[0009] Furthermore, as a preference, a ring cavity is provided in the ring cylinder, a ring opening is provided at the end of the ring cavity close to the filter cylinder, a sleeve is slid on the ring opening, the sleeve is connected to the bottom of the ring cavity through a spring, and the ring cavity is connected to the outer cylinder cavity of the double-layer cylinder rod through a through hole.

[0010] Furthermore, as a preference, a second ring cavity is provided in the second ring cylinder, a second ring opening is provided at the end of the second ring cavity close to the filter cylinder, a separation ring is slid on the second ring opening, the separation ring is connected to the bottom of the second ring cavity by a second spring, and the second ring cavity is connected to the outer cylinder cavity of the double-layer cylinder rod by a second through-hole.

[0011] Furthermore, preferably, under the same pressure condition, the deformation of the spring 1 is greater than the deformation of the spring 2.

[0012] Furthermore, as a preference, a control valve is provided on the catheter, and the monitoring system includes a monitoring tube and a telescopic mechanism respectively arranged on the mounting frame, the output end of the telescopic mechanism is connected to a plunger slidably connected to the barrel cavity of the monitoring tube, the bottom of the monitoring tube is provided with an inlet channel connected to the catheter, and the bottom of the monitoring tube is also connected to a gas release valve and a gas sensor.

[0013] Furthermore, as a preference, the double-layered tube rod is provided with a head at one end facing the goaf, and a ring cavity three connected to the outer tube cavity of the double-layered tube rod is provided in the head, and a ring plug is provided at the end of the ring cavity three close to the double-layered tube rod, and the ring plug is connected to the bottom of the ring cavity three through a spring three, and the end of the ring plug away from the spring three is connected to a tube ring, and a through opening is provided on the ring wall of the tube ring, and a guide hole corresponding to the through opening is provided on the outer wall of the outer tube cavity of the double-layered tube rod, and a ring groove connected to the through opening is provided in the head, and the ring groove is connected to a spray hole penetrating the outer wall of the head, and the gas displacement tank can supply nitrogen.

[0014] Furthermore, preferably, a one-way valve is provided in the spray hole.

[0015] Furthermore, preferably, a nozzle is connected to the end of the inner tube cavity of the double-layer tube rod close to one end of the goaf.

[0016] Further, preferably, the gap filling tank is capable of supplying aerogel.

[0017] Compared with the existing technology, the present invention provides a disaster prevention system based on mine safety production, which has the following beneficial effects:

[0018] In the present invention, the position of the upper corner gas sensor is adjusted by moving the guide rail, and the gas monitoring rods arranged in layers in the goaf and the tunnel roof are combined. The vertically inserted gas monitoring rods form grid monitoring nodes in the goaf and the tunnel roof, and dynamically capture the gas migration trend to provide two-dimensional data support in space and time for disaster prevention, and realize real-time reconstruction of the three-dimensional gas concentration distribution and flow trajectory. Through the segmented design of the air cylinder, that is, the ring cylinder, the filter cylinder and the catheter suction mechanism, the gas abnormal area can be accurately located, solving the blind spot problem of traditional point monitoring.

[0019] In the present invention, nitrogen is injected into the goaf through a gas displacement tank to replace high-risk gas. At the same time, the aerogel in the gap-filling tank is used to seal the cracks, blocking the gas leakage path at the source. The design of the aerogel can be separated from the filter cylinder and the separation ring through a pressure-controlled collar, and the filter can be automatically cleaned and the permeability can be maintained, ensuring long-term monitoring reliability. In addition, the same pressure is used to trigger gas replacement, filter coverage and aerogel separation in sequence, simplifying the operation process and reducing system complexity.

[0020] The present invention greatly improves data collection efficiency through automated cyclic monitoring of gas sampling, detection and emptying, compares and analyzes the concentration changes in the upper corner, goaf and roof, constructs a gas flow dynamics model, and quickly locates the leakage source, namely the goaf and / or roof cracks, thereby improving the accuracy of early warning. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the disaster prevention system of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the second gas sensor of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the gas monitoring rod of the present invention;

[0024] Figure 4 Schematic diagram of the structure of the gas displacement tank of the present invention;

[0025] Figure 5 Schematic diagram of the monitoring system structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the double-layer tube rod structure of the present invention;

[0027] Figure 7 It is a schematic diagram of the catheter structure of the present invention;

[0028] Figure 8 It is a schematic structural diagram of the ventilating cylinder of the present invention;

[0029] Figure 9 This is a schematic structural diagram of the ring cylinder 1 and the ring cylinder 2 of the present invention;

[0030] Figure 10 Schematic diagram of the structure of through hole 1 and through hole 2 of the present invention;

[0031] Figure 11 This is a schematic diagram of the head structure of the present invention;

[0032] Figure 1: Tunnel roof; 2: Goaf; 3: Gas monitoring rod; 4: Mobile guide rail; 5: Conduit; 6: Gas displacement tank; 31: Fixed frame; 32: Double-layer cylinder rod; 33: Breathing cylinder; 34: Monitoring system; 35: Gap filling tank; 321: Guide hole; 331: Pipeline; 332: Filter cylinder; 333: Ring cylinder 1; 334: Ring cylinder 2; 335: Blocking rod; 3331: Ring cavity 1; 3332: Ring opening 1; 3333: Sleeve ring; 3334: Spring 1; 3335: Through hole 1; 3341 , ring cavity two; 3342, ring mouth two; 3343, separation ring; 3344, spring two; 3345, through hole two; 341, monitoring tube; 342, telescopic mechanism; 343, plunger; 344, inlet channel; 345, gas sensor one; 346, air release valve; 41, gas sensor two; 51, control valve; 351, nozzle; 61, head; 62, spring three; 63, ring plug; 64, cylinder ring; 65, through hole; 66, ring cavity three; 611, ring groove; 612, spray hole; 613, one-way valve. DETAILED DESCRIPTION

[0033] Reference Figures 1-11 The present invention provides a technical solution: a disaster prevention system based on mine safety production, which includes:

[0034] The movable guide rail 4 is parallel to the direction of the coal mining working face and is arranged in the upper corner area, and a gas sensor 41 is installed on the movable guide rail 4;

[0035] Gas monitoring rods 3 are respectively arranged in the goaf 2 and the roadway roof 1. The gas monitoring rods 3 include a fixing frame 31, on which a double-layered cylindrical rod 32 is mounted. The double-layered cylindrical rod 32 is sheathed with an axially arranged air permeable cylinder 33. The air permeable cylinder 33 is connected to a monitoring system 34 via a conduit 5. The outer and inner cavities of the double-layered cylindrical rod 32 are respectively connected to a gas displacement tank 6 and a gap filling tank 35.

[0036] In this embodiment, the gas concentration in the area of the ventilation cylinder 33 is monitored by the monitoring system 34, and the position of the ventilation cylinder 33 area and the gas concentration are recorded in a one-to-one correspondence, so as to analyze the gas concentration and gas flow in the goaf 2 and the roadway roof 1. Among them, the gas replacement tank 6 can be used to replace the gas in the goaf 2 and the roadway roof 1, thereby avoiding gas accumulation in the goaf 2 and the roadway roof 1 and avoiding safety hazards in mine production. Among them, the gap filling tank 35 can be used to fill the gaps in the goaf 2 and the roadway roof 1, so as to timely maintain the airtightness of the goaf 2 and the roadway roof 1, and prevent the retained gas in the upper corner area and the roadway from leaking into the goaf 2 and the roadway roof 1;

[0037] In this embodiment, as coal mining progresses along the coal mining face, the gas sensor 2 41 is regulated to move in the upper corner area by the movable guide rail 4 to monitor the gas concentration change a in the upper corner. The gas concentration change b in the goaf 2 is then monitored by the gas monitoring rod 3 arranged in the goaf 2. The gas concentration change c in the roadway roof 1 is then monitored by the gas monitoring rod 3 arranged in the roadway roof 1. By monitoring the obtained gas concentration changes b and c, it is determined whether the monitored gas concentration change a in the upper corner is related to the gas concentration changes b and c, thereby facilitating timely determination of whether the gas concentration change a in the upper corner is related to a gas leak, thereby promptly preventing gas leakage hazards that affect mine production safety.

[0038] In this embodiment, the gas monitoring rods 3 arranged in the goaf 2 are vertically inserted into the goaf 2, and at least two groups of gas monitoring rods 3 are arranged vertically and evenly spaced along the direction of the coal working face to monitor the gas concentration distribution in the goaf 2, thereby facilitating the analysis of the gas flow trend in the goaf 2 and further facilitating the enhanced accuracy of determining whether the gas concentration in the upper corner is leaking.

[0039] In this embodiment, the gas monitoring rods 3 arranged in the tunnel roof 1 are vertically inserted into the goaf 2, and at least two groups are arranged horizontally and evenly spaced along the direction of the coal mining working face, so as to monitor the gas concentration distribution in the space of the tunnel roof 1, thereby facilitating the analysis of the gas flow trend in the tunnel roof 1, and further facilitating the enhancement of the accuracy of the judgment of whether the gas concentration in the upper corner is leaking.

[0040] In this embodiment, the vent tube 33 is provided with an axially penetrating pipe 331 in the wall of the vent tube 33. The vent tube 33 includes a ring tube 1 333, a filter tube 332, and a ring tube 2 334 connected in sequence. The conduit 5 is connected to the filter tube 332 through the pipe 331 in the ring tube 2 334. The pipes 331 on the ring tube 1 333 and the ring tube 2 334 that are not penetrated by the conduit 5 are blocked by a blocking rod 335.

[0041] Among them, the diameter of the filter cylinder 332 is smaller than the diameter of the ring cylinder 1 333 and the ring cylinder 2 334. The diameters of the ring cylinder 1 333 and the ring cylinder 2 334 are the same, so that the ring cylinder 1 333 and the ring cylinder 2 334 can isolate the areas on both sides of the filter cylinder 332, and the cylindrical structure of the filter cylinder 332 itself presents a breathable structure, so that the conduit 5 can suck the filter holes of the filter cylinder 332.

[0042] In this embodiment, a ring cavity 3331 is provided in the ring cylinder 333. An end of the ring cavity 3331 close to the filter cylinder 332 is provided with a ring opening 3332. A collar 3333 slides on the collar opening 3332. The collar 3333 is connected to the bottom of the ring cavity 3331 via a spring 3334. The ring cavity 3331 is connected to the outer cylinder cavity of the double-layer cylinder rod 32 via a through hole 3335.

[0043] Among them, the annular cavity 1331 where the spring 1334 is located is in a sealed structure. By increasing or decreasing the pressure of the annular cavity 1331 where the spring 1334 is located, the ring 3333 can be regulated to export and import the ring opening 1332, and the inner ring wall of the ring 3333 is in contact with the outer wall of the filter cylinder 332. Therefore, when the ring 3333 exports the ring opening 1332 to the largest extent, it can cover the entire filter cylinder 332, and the ring 3333 can have a scraping and cleaning effect on the outer wall of the filter cylinder 332, thereby reducing the clogging effect of the filter cylinder 332.

[0044] In this embodiment, a second ring cavity 3341 is provided in the second ring cylinder 334. A second ring opening 3342 is provided at one end of the second ring cavity 3341 close to the filter cylinder 332. A separation ring 3343 slides on the second ring opening 3342. The separation ring 3343 is connected to the bottom of the second ring cavity 3341 via a second spring 3344. The second ring cavity 3341 is connected to the outer cylinder cavity of the double-layer cylinder rod 32 via a second through hole 3345.

[0045] Among them, the ring cavity 2 3341 where the spring 2 3344 is located is in a sealed structure. By increasing or decreasing the pressure of the ring cavity 2 3341 where the spring 2 3344 is located, the extraction and introduction of the ring opening 2 3342 of the separation ring 3343 can be regulated, and the inner ring wall of the separation ring 3343 is in contact with the outer wall of the collar 3333. Therefore, when the extraction of the ring opening 2 3342 of the separation ring 3343 is at its maximum, it can cover the entire collar 3333. That is to say, when the gap filling tank 35 performs the gap filling operation, the collar 3333 is adjusted to cover the surface of the vent tube 33. That is to say, in this embodiment, when the collar 3333 surface is adhered to When aerogel is used, the surface of the ring 3333 is cut off by cutting the ring 3343. Aerogels are separated so that The aerogel is filled in the breathable cylinder 33 to ensure the breathable effect of the breathable cylinder 33 so as to effectively monitor and analyze the gas in the goaf 2 and the roadway roof 1 in a long term.

[0046] In this embodiment, under the same pressure conditions, the deformation of spring one 3334 is greater than the deformation of spring two 3344, that is, when the outer cylinder cavity of the double-layer cylinder rod 32 is pressurized into through hole one 3335 and through hole two 3345, spring one 3334 is compressed first until the sleeve ring 3333 completely covers the outer surface of the breathable cylinder 33. At this time, spring two 3344 has not yet deformed. Thereafter, when it is necessary to cut off the ring 3343 and guide out the ring mouth two 3342, the pressure is continuously increased, thereby causing spring two 3344 to deform, so that the ring 3343 needs to be cut off and the ring mouth two 3342 needs to be guided out.

[0047] In this embodiment, the conduit 5 is provided with a control valve 51. The monitoring system 34 includes a monitoring tube 341 and a telescopic mechanism 342, which are respectively mounted on the mounting frame 31. The output end of the telescopic mechanism 342 is connected to a plunger 343 that is slidably connected to the tube cavity of the monitoring tube 341. The bottom of the monitoring tube 341 is provided with an inlet channel 344 connected to the conduit 5. The bottom of the monitoring tube 341 is also connected to a gas release valve 346 and a gas sensor 345.

[0048] Specifically, a sealed monitoring chamber is formed between the plunger 343 and the bottom of the monitoring tube 341, and the air release valve 346 is in a closed state. When the control valve 51 is opened, the telescopic mechanism 342 is used to regulate the movement of the plunger 343 in the monitoring tube 341 to increase the volume of the sealed monitoring chamber. The conduit 5 on the corresponding control valve 51 draws the gas in the corresponding position of the air-permeable tube 33 area into the sealed monitoring chamber, and monitors and records it through the gas sensor 345. After the monitoring and recording is completed, the control valve 51 is closed and the air release valve 346 is opened. The telescopic mechanism 342 is used to regulate the plunger 343 to squeeze the volume of the sealed monitoring chamber and completely discharge the monitored gas for subsequent continuous monitoring. Therefore, the gas concentration changes recorded at the corresponding position can be used to obtain the trajectory of the dynamic flow of gas, determine the starting position area of the gas flow trajectory, and thus determine whether the gas in the goaf 2 and the tunnel roof 1 is related to the gas in the upper corner area and the tunnel, so as to timely prevent disasters.

[0049] In this embodiment, the double-layered barrel rod 32 is provided with a head 61 at one end thereof close to the goaf 2, and a ring cavity 3 66 connected to the outer barrel cavity of the double-layered barrel rod 31 is provided in the head 61, and a ring plug 63 is provided at one end of the ring cavity 36 close to the double-layered barrel rod 32, and the ring plug 63 is connected to the bottom of the ring cavity 366 by a spring 3 62, and the end of the ring plug 63 away from the spring 3 62 is connected to a barrel ring 64, and a through-hole 65 is provided on the ring wall of the barrel ring 64, and a guide hole 321 corresponding to the through-hole 65 is provided on the outer wall of the outer barrel cavity of the double-layered barrel rod 32, and a ring groove 611 connected to the through-hole 65 is provided in the head 61, and the ring groove 611 is connected to a spray hole 612 that passes through the outer wall of the head 61, and the gas displacement tank 6 can supply nitrogen;

[0050] Initially, the outer wall of the ring plug 63 and the guide hole 321 are in a blocked state. When the outer cylinder cavity of the double-layer cylinder rod 32 is pressurized, the ring plug 63 is pushed to compress the spring 3 62 until the opening 65 is connected to the guide hole 321. This allows nitrogen to flow into the spray hole 612 and introduce nitrogen into the goaf 2 and / or the roadway roof 1. Then, through the coordinated regulation of the control valve 51, the air release valve 346, and the telescopic mechanism 342, the gas in the goaf 2 and / or the roadway roof 1 is sucked out and replaced. When the gas concentration monitored by the gas sensor 1 345 is low and safe, the nitrogen replacement process is stopped, thereby preventing the disaster caused by excessive gas concentration in the goaf 2 and / or the roadway roof 1.

[0051] In addition, when the outer cylinder cavity of the double-layer cylinder rod 32 is pressurized, the spring 3 62 is compressed before the spring 1 3334. That is to say, when the port 65 is connected to the guide hole 321 and the pressure is continuously increased until the cylinder ring 64 blocks the guide hole 321, the spring 1 3334 begins to deform, so that the gas is replaced by a gas replacement tank 6, the filter cylinder 332 is covered by the collar 3333, and the collar 3333 is connected to the filter cylinder 332. The separation process of aerogels can optimize the control program, reduce the complexity of operation, and make the prevention, monitoring and regulation of gas disasters in mine safety production safer, more convenient and efficient.

[0052] In this embodiment, a one-way valve 613 is provided in the spray hole 612 .

[0053] In this embodiment, a nozzle 351 is connected to the inner cylinder cavity end of the double-layer cylinder rod 32 close to the goaf 2.

[0054] In this embodiment, the gap filling tank 35 can supply Aerogel, through Aerogel is injected into the cracks to fill and seal the cracks, thereby preventing gas leakage in the upper corner area and the tunnel, and preventing gas in the goaf 2 and / or the tunnel roof 1 from leaking into the tunnel.

[0055] In specific implementation, it includes the following steps:

[0056] S1: gas monitoring rods 3 are arranged in the goaf 2 and the roadway roof 1, and movable guide rails 4 and gas sensors 41 are installed in the upper corner area to monitor and obtain the change a of gas concentration in the upper corner;

[0057] S2: By setting the telescopic mechanism 342 to start periodically and setting the control valve 51 to open and close in an orderly manner, the gas concentration change b in the goaf 2 and the gas concentration change c in the roadway roof 1 are monitored and obtained;

[0058] S3: Analyze the upper corner gas concentration change a, gas concentration change b, gas concentration change c and the corresponding position areas to obtain the trajectory of gas dynamic flow and determine the starting position area of the gas flow trajectory, thereby determining whether the gas in the goaf 2 and the roadway roof 1 is related to the gas in the upper corner area and the roadway, so as to carry out disaster prevention in a timely manner.

[0059] The above description is only a preferred specific embodiment of the invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A disaster prevention system based on mine safety production, characterized in that: It includes: A movable guide rail (4) is parallel to the direction of the coal mining working face and is arranged in the upper corner area, and a gas sensor 2 (41) is installed on the movable guide rail (4); Gas monitoring rods (3) are respectively arranged in the goaf (2) and the roadway roof (1). The gas monitoring rods (3) include a fixing frame (31). A double-layered tube rod (32) is installed on the fixing frame (31). The double-layered tube rod (32) is covered with an axially arranged air-permeable tube (33) on the outside. The air-permeable tube (33) is connected to a monitoring system (34) through a conduit (5). The outer tube cavity and the inner tube cavity of the double-layered tube rod (32) are respectively connected to a gas displacement tank (6) and a gap filling tank (35).

2. A disaster prevention system based on mine safety production according to claim 1, characterized in that: The vent tube (33) is provided with an axially penetrating pipe (331) in the wall of the vent tube (33). The vent tube (33) comprises a first ring tube (333), a filter tube (332), and a second ring tube (334) connected in sequence. The conduit (5) is connected to the filter tube (332) via the pipe (331) in the second ring tube (334). The pipes (331) on the first ring tube (333) and the second ring tube (334) that are not penetrated by the conduit (5) are blocked by a blocking rod (335).

3. A disaster prevention system based on mine safety production according to claim 2, characterized in that: The annular cylinder (333) is provided with an annular cavity (3331), an end of the annular cavity (3331) close to the filter cylinder (332) is provided with an annular opening (3332), a sleeve (3333) is slid on the annular opening (3332), the sleeve (3333) is connected to the bottom of the annular cavity (3331) via a spring (3334), and the annular cavity (3331) is connected to the outer cylinder cavity of the double-layer cylinder rod (32) via a through hole (3335).

4. A disaster prevention system based on mine safety production according to claim 3, characterized in that: The second ring cylinder (334) is provided with a second ring cavity (3341), and the end of the second ring cavity (3341) close to the filter cylinder (332) is provided with a second ring opening (3342). A separation ring (3343) slides on the second ring opening (3342), and the separation ring (3343) is connected to the bottom of the second ring cavity (3341) through a second spring (3344). The second ring cavity (3341) is connected to the outer cylinder cavity of the double-layer cylinder rod (32) through a second through hole (3345).

5. A disaster prevention system based on mine safety production according to claim 4, characterized in that: Under the same pressure conditions, the deformation of spring one (3334) is greater than the deformation of spring two (3344).

6. A disaster prevention system based on mine safety production according to claim 1, characterized in that: The conduit (5) is provided with a control valve (51). The monitoring system (34) comprises a monitoring tube (341) and a telescopic mechanism (342) respectively provided on the mounting frame (31). The output end of the telescopic mechanism (342) is connected to a plunger (343) slidably connected to the tube cavity of the monitoring tube (341). The bottom of the monitoring tube (341) is provided with an inlet channel (344) connected to the conduit (5). The bottom of the monitoring tube (341) is also connected to a gas release valve (346) and a gas sensor (345).

7. A disaster prevention system based on mine safety production according to claim 1, characterized in that: The double-layered tube rod (32) is provided with a head (61) at one end close to the goaf (2), and a ring cavity three (66) connected to the outer tube cavity of the double-layered tube rod (31) is provided in the head (61). The end of the ring cavity three (66) close to the double-layered tube rod (32) is provided with a ring plug (63), and the ring plug (63) is connected to the bottom of the ring cavity three (66) through a spring three (62). The end of the ring plug (63) away from the spring three (62) is connected to a tube ring (64), and the ring ring (64) is provided with a through opening (65) on the ring wall. The outer wall of the outer tube cavity of the double-layered tube rod (32) is provided with a guide hole (321) corresponding to the through opening (65). The head (61) is provided with an annular groove (611) connected to the through opening (65), and the annular groove (611) is connected to a spray hole (612) penetrating the outer wall of the head (61). The gas displacement tank (6) can supply nitrogen.

8. A disaster prevention system based on mine production safety according to claim 7, characterized in that: A one-way valve (613) is provided in the spray hole (612).

9. A disaster prevention system based on mine safety production according to claim 1, characterized in that: The inner barrel cavity end portion of the double-layer barrel rod (32) close to one end of the goaf (2) is connected to a nozzle (351).

10. A disaster prevention system based on mine safety production according to claim 1, characterized in that: The gap filling tank (35) is capable of supplying Aerogel.

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