Coal mine tunnel gushing water total cross-section plugging device and working method thereof

Abstract

The invention relates to the technical field of mining engineering, in particular to a coal mine tunnel gushing water total cross-section plugging device and a working method thereof. The plugging device comprises a plugging roll and a plugging layer. The blocking roll comprises a transmission shaft and a net-shaped fence, the transmission shaft is installed on the top of the roadway, and the net-shaped fence is wound around the transmission shaft. The blocking layer comprises a plurality of independent water absorption film bags, the water absorption film bags are arranged on the water facing side of the blocking roll, each water absorption film bag is filled with water swelling materials, the position, attached to the roadway, of the blocking layer is elastic cloth, the interior of the blocking layer is non-elastic cloth, the front side of the blocking layer is permeable cloth, and the back side of the blocking layer is waterproof cloth. According to the invention, the safety of coal mining is improved, and disasters caused by water burst are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of mining engineering, and in particular to a full-section plugging device for water inrush in a coal mine tunnel and a working method thereof. Background Art

[0002] In the field of mining engineering, especially in the process of coal mining, safety issues have always been the focus of the industry. Inside the mine, especially in the various working faces being mined, water inrush in the coal mine working face has become a key factor restricting production and endangering life. In most cases, water inrush in a certain working face is usually accompanied by mud and sand. If this working face is not handled in time, it will cause damage to the remaining working faces and the entire main tunnel of the coal mine, threatening the lives of workers and causing economic losses. The management of working faces facing water and mud inrush mainly includes the following problems: Water and mud inrush usually occur quickly, and it takes a short time to reach the main tunnel of the coal mine from a certain working face. There are generally two types of existing coal mine water inrush prevention and control measures: waterproof gates and flood control sandbags. The existing waterproof gate device is generally hydraulically started, with a slow start speed and a high failure rate. When there is mud and sand in the water flow, the gate cannot be closed normally; a certain amount of flood control sandbags are usually placed at the connection, but the flood control sandbags can only deal with a small amount of surface water. In the treatment of large-flow water inrush, it not only cannot play a prevention and control role, but also threatens the lives of workers. Waterproof gates rank first among the coal mine water inrush prevention and control measures. When a coal mine water inrush accident occurs, it is usually water inrush from the bottom plate or the top plate. The shape of the waterproof gate is fixed. When the bottom plate or the top plate water inrush is severely deformed, the waterproof gate faces the risk of failure. In addition, there are also some devices for blocking gas, dust, etc. in the prior art, but these devices are not strong enough to effectively block water inrush of 2Mpa and above, and are easily scratched by fine sand and gravel, causing the entire device to be scrapped. Summary of the invention

[0003] In view of the deficiencies in the prior art, the purpose of the embodiments of the present invention is to provide a coal mine tunnel water inrush full-section plugging device and a working method thereof, aiming to improve the safety of coal mining and reduce the disasters caused by water inrush.

[0004] In order to achieve the above objectives, the embodiments of the present invention provide the following technical solutions: A full-section plugging device for water inrush in a coal mine tunnel, comprising: a plugging roll and a plugging layer; the plugging roll comprises a transmission shaft and a mesh fence, the transmission shaft is mounted on the top of the tunnel, and the mesh fence is wound on the transmission shaft; the plugging layer comprises a plurality of independent absorbent film bags, the absorbent film bags are arranged on the water-facing side of the plugging roll, each absorbent film bag is filled with water-swellable material, the sealing layer is made of elastic cloth at the position where it fits the tunnel, the inside of the plugging layer is made of inelastic cloth, the front side is made of permeable cloth, and the back side is made of waterproof cloth.

[0005] An embodiment of the present invention also provides a working method of the full-section plugging device for water gushing in a coal mine tunnel as described above, comprising: when water gushing occurs on the working face, the transmission shaft rotates, the plugging roll and the plugging layer attached thereto begin to fall, and the water-absorbing membrane bag on the water-facing surface begins to absorb water and swell after meeting water; as the amount of water increases and the water level increases, the water-absorbing membrane bag gradually absorbs water and swells until the plugging layer completely and flexibly fits the bottom, both sides and top of the tunnel to form a full-section plugging body to block the water gushing.

[0006] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages: 1. The plugging device can respond quickly when a sudden water surge occurs. The material can expand rapidly when it comes into contact with water, quickly forming a high-strength large-scale plugging connector, which can block underground large-section water surges greater than 2Mpa while bearing the load of the tunnel. Even in the case of large water flow or high water pressure, the device can stably resist the pressure from the water flow, ensure that the plugging effect is not destroyed, avoid subsequent dangers such as tunnel collapse, and achieve the effect of water blocking + load bearing. The installation process is simple and efficient, meeting the expected requirements of the project.

[0007] 2. Since the particle size of polyacrylate absorbent resin material is small, there is a possibility of water loss and permeability under a certain pressure. Therefore, the absorbent film bag is set in a grid shape, the water-facing side is composed of non-woven fabric with excellent water permeability, and the back-water side is composed of impermeable geotextile to prevent the material from losing through the gaps; the material has high expansion performance. In order to give full play to the expansion performance of the material, the film bag that fits the inner wall of the tunnel is made of high elastic fabric (polyester high elastic fabric), and the film bag can flexibly fit the inner wall of the tunnel due to the high expansion of the internal material; according to the functional expression of each part of the fabric, the water-facing side permeability of the expandable absorbent film bag-the surrounding expansion-the back-water isolation system is realized, and the expandable absorbent film bag can expand adaptively to the deformed inner wall of the tunnel.

[0008] Advantages of additional aspects of the present invention will be given in the following description, and in part will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In addition, the spacing or size between each other is exaggerated to show the position of each part, and the schematic diagram is only used for illustration.

[0010] Figure 1is a schematic diagram of a plugging device in a rolled-up state provided by an embodiment of the present invention; Figure 2 is a schematic diagram of a blocking layer provided by an embodiment of the present invention; Figure 3 is a schematic diagram of the expanded state of the plugging roll provided by an embodiment of the present invention; Figure 4 is a schematic diagram of a transmission shaft and a bayonet provided by an embodiment of the present invention from a first perspective; Figure 5 is a schematic diagram of a transmission shaft and a bayonet provided by an embodiment of the present invention from a second viewing angle; Figure 6 is a schematic diagram of the arrangement position of the blocking device provided in an embodiment of the present invention; Figure 7 is a schematic diagram of the arrangement of multiple blocking devices provided by an embodiment of the present invention; Figure 8 is a schematic diagram of the blocking states of multiple blocking devices provided by an embodiment of the present invention; Fig. 9 is a front schematic diagram of a packaging device in a blocked state provided by an embodiment of the present invention; In the figure: 1, plugging roll; 11, transmission shaft; 12, mesh fence; 13, cross brace; 14, counterweight bar; 2, plugging layer; 21, water-absorbing film bag; 211, waterproof cloth; 212, water-permeable cloth; 213, inelastic cloth; 214, elastic cloth; 22, water-swelling material; 3, lane; 31, track groove; 32, bottom groove; 4, driving mechanism; 41, latch; DETAILED DESCRIPTION It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0011] As introduced in the background technology, at present, the prevention and control of water inrush in coal mines mainly relies on waterproof gates and flood control sandbags. Waterproof gates are usually hydraulically activated, with slow startup speed, high failure rate, and difficult to work normally in complex environments with mud and sand. Although flood control sandbags are low in cost, they cannot effectively prevent and control large-volume water inrush, and there are safety hazards. These existing technologies have problems such as slow response speed, poor blocking effect, and low safety when dealing with sudden water inrush. In order to solve the above technical problems, this embodiment proposes a full-section blocking device for water inrush in coal mine tunnels, which can achieve rapid response and efficient blocking, and improve the safety of coal mining. The device, through the combination of a mechanical transmission device and a water-absorbing membrane bag, can quickly block water inrush when it occurs, reduce the impact of water inrush on the coal mine working face, protect the lives of miners, and reduce economic losses.

[0012] Example 1 like Figure 1 , Figure 2 As shown, the full-section plugging device for water inrush in a coal mine tunnel includes a plugging roll 1 and a plugging layer 2; the plugging roll 1 includes a transmission shaft 11 and a mesh fence 12, the transmission shaft 11 is installed on the top of the tunnel 3, and the mesh fence 12 is wound on the transmission shaft 11; the plugging layer 2 includes a plurality of independent water-absorbing film bags 21, and the water-absorbing film bags 21 are arranged on the water-facing side of the plugging roll 1, and each water-absorbing film bag 21 is filled with water-swellable material 22, the position where the plugging layer 2 and the tunnel 3 are attached is an elastic cloth 214, the inside of the plugging layer 2 is an inelastic cloth 213, the front side is a permeable cloth 212, and the back side is a waterproof cloth 211.

[0013] The plugging roll 1 is composed of a transmission shaft 11 and a mesh fence 12, and is installed on the top of the tunnel 3. The transmission shaft 11 plays a supporting and transmission role, and its structural design ensures the stability and reliability of the device. The mesh fence 12 is wound on the transmission shaft 11 and forms an expandable plugging structure by rolling up. When a sudden water inrush event occurs, the mesh fence 12 can quickly fall down and form a full-section protection to effectively block the water inrush.

[0014] The sealing layer 2 is composed of a plurality of independent water-absorbing film bags 21, which are arranged on the water-facing side of the sealing roll 1. The portion of the sealing layer 2 that fits the tunnel 3 uses an elastic cloth 214, which can flexibly adapt to the shape changes in the tunnel 3 and achieve effective sealing. The front side uses a permeable cloth 212 to ensure that water can quickly enter the film bag, and the back side uses a waterproof cloth 211 to effectively prevent moisture from overflowing through the back of the film bag. Each water-absorbing film bag 21 is filled with a water-swellable material 22, such as a polyacrylate water-absorbing resin material. These materials can expand rapidly after contacting water to form a dense sealing body to prevent water leakage and flow. The overall design of the device fully considers the actual working conditions of the coal mine tunnel 3, and can provide fast and reliable protection in emergency situations, effectively improving the safety of mining operations.

[0015] Considering the disadvantage of polyacrylate water-absorbing resin materials losing a large amount of water under pressure after absorbing water, the water-absorbing film bag 21 is set to a grid shape, and a certain mass of water-swelling material 22 is filled inside each grid. This water-absorbing film bag 21 can offset the influence of excessive gravity on the water absorption performance of the lower material after most of the upper materials absorb water, and the overall water absorption rate is significantly improved. In addition, considering that the internal materials will compress other grid spaces after absorbing water, affecting the water absorption efficiency, inelastic cloth 213 (inelastic thick geotextile) is used between the mesh structure. On the one hand, when the water-swelling material inside it absorbs water, it props up the middle water-absorbing film bag 21, fills the internal cavity of the entire plugging layer 2, and then supports the outer water-absorbing film bag, and cooperates with the outermost elastic cloth 214 to achieve the plugging of the entire cross section; on the other hand, the middle water-absorbing film bag 21 after absorbing water and swelling can enhance the strength of the waterproof cloth 211, and improve the stability and safety of the plugging.

[0016] like Figure 3 As shown, the mesh fence 12 includes a cross brace 13 and a counterweight bar 14. There are multiple cross braces 13, and the multiple cross braces 13 are arranged in parallel in the vertical direction. The counterweight bar 14 is parallel to the cross brace 13 and is located on the bottom side of the mesh fence 12. Track grooves 31 are opened on both sides of the lane 3, and a bottom groove 32 is opened at the bottom of the lane 3. The bottom groove 32 and the track groove 31 are located in the same plane. The two ends of the cross brace 13 are embedded in the track groove 31, and the counterweight bar 14 can be embedded in the bottom groove 32.

[0017] The cross brace 13 and the counterweight bar 14 increase the stability and load-bearing capacity of the entire structure and enhance the impact resistance. The track grooves 31 and the bottom grooves 32 on both sides of the lane 3 are located in the same plane, which facilitates the smooth fall of the plugging roll 1. The two ends of the cross brace 13 are embedded in the track grooves 31 to ensure that the plugging device can move smoothly along the set track when started. The counterweight bar 14 can be embedded in the bottom groove 32, further improving the fixity and stability of the device.

[0018] The plugging device is composed of a mesh steel grid with a diameter of 5 mm and a counterweight cross steel at the bottom. The mesh steel grid is rolled on the central transmission shaft 11. In the direction parallel to the transmission shaft 11, a number of steel cross braces 13 are welded on the plugging roll 1 in accordance with the height of the tunnel 3. A rectangular counterweight is welded at the bottom of the mesh steel grid to fit into the bottom groove 32. The length of the mesh steel grid, the cross brace 13, and the steel rectangular counterweight are all at least 50 cm greater than the width of the tunnel 3, depending on the width of the tunnel 3. Before the plugging roll 1 is installed, the inner wall of the tunnel 3 is at least 25 cm deep and 5 cm wide. The specific size depends on the width of the tunnel 3, so that the two sides of the plugging roll 1 are stuck in the groove during the falling process, ensuring that in the case of water gushing, all parts of the device can fully cover the cross section of the entire tunnel 3, thereby achieving full-section plugging. The top device is pre-installed with expansion screws, the steel cross braces 13 on both sides are inserted into the track grooves 31 on both sides of the tunnel 3, and the bottom cross steel is inserted into the bottom groove 32. When facing sudden water and mud, a full-section steel support net can be quickly formed to form a reverse force to resist water pressure.

[0019] like Figure 4 , Figure 5 As shown, the blocking device further includes a driving mechanism 4, which includes an electromagnet and a latch 41. The latch 41 can be lifted and lowered in the vertical direction under the action of the electromagnet. A latch groove is provided on the outer periphery of the transmission shaft 11. The electromagnet can absorb the latch 41 to rise and latch it in the latch groove of the transmission shaft 11 for locking. This design can effectively control the start-up timing of the blocking roll 1, and determine when to release the latch 41 by the adsorption force of the electromagnet.

[0020] When the electric switch is turned on, the electromagnet is powered off, the latch 41 loses its adsorption force, the transmission shaft 11 rotates freely, and the plugging roll 1 begins to fall, thereby quickly forming a full-section plug. This design realizes automated operation, reduces manual intervention, and improves the response speed and efficiency of plugging. The technical effect of the drive mechanism 4 is to enhance the safety and reliability of the device, ensure that the plugging task can be completed quickly and effectively in an emergency, thereby reducing the threat of water inrush to the tunnel 3 and workers.

[0021] The absorbent film bag 21 has a rectangular appearance, and the inside is divided into a mesh structure by an inelastic, non-retractable thick geotextile. The elastic cloth 214 is a polyester elastic cloth 214, which has good elasticity and flexibility, and can effectively adapt to the shape changes of the inner wall of the tunnel 3, ensuring that the film bag can fit tightly. The inelastic cloth 213 is a geotextile, and its high strength and wear resistance can enhance the overall structural strength of the film bag. The permeable cloth 212 is a non-woven fabric with excellent water permeability, which can quickly guide water flow into the absorbent film bag 21, ensuring that the material can absorb moisture in the shortest time and achieve a rapid plugging effect. The waterproof cloth 211 is also a geotextile, and its impermeable performance ensures that moisture will not be lost from the back side of the film bag, increasing the effectiveness of the plugging. Through the design of this material combination, the overall performance of the plugging layer 2 is significantly improved, allowing the device to maintain an efficient plugging effect in extreme environments and reduce the impact of water flow on the safety of the tunnel 3.

[0022] The water-swellable material 22 is a polyacrylate water-absorbing resin. This material can rapidly expand 200-250 times after encountering water, and its reaction time only takes 10 seconds to 1 minute, which greatly improves the response speed and blocking effect of the device under water gushing conditions. The rapid response of the water-swellable material 22 can form a preliminary protection at the moment when the water flow begins to flow in, and gradually achieve full-section blocking in the subsequent expansion process, thereby effectively slowing down the intrusion speed of water and gaining precious time for the implementation of other prevention and control measures. After absorbing water, the polyacrylate water-absorbing resin has good flexibility and adaptability, and can form a tight seal on the wall of the lane 3 to prevent water leakage. At the same time, the stability of the material under high pressure is also greatly enhanced, ensuring that an effective blocking effect can be maintained under sudden strong water gushing conditions.

[0023] like Figure 6 As shown, the blocking device is arranged at the tunnel 3 of the mining face connected to the main road. The location selection is based on the risk analysis of water inrush in actual operation. Usually, the main road is the main access route of the coal mine, and the mining face is a high-risk area for water inrush. Placing the blocking device at this location can handle water inrush events in a timely manner to prevent water from spreading to other tunnels 3. The layout of the blocking device should take into account the structure of the tunnel 3 and the direction of water flow to ensure that it can play a role in the first time when water inrush occurs.

[0024] This device is installed on the top of the tunnel 3. Before installation, the top of the tunnel 3 is pre-grooved. This device is installed inside it without affecting the space of the tunnel 3. When water gushes on the working face, the water gushing rapid plugging device is quickly activated through the electric gate. The bag can be physically dropped quickly by the gravity of the material inside the device and the bottom counterweight bar 14, and stuck into the pre-dug groove at the bottom. It is not affected by the bottom water flow and mud and cannot be started. The expandable water-absorbing film bag 21 attached to the plugging roll 1 quickly absorbs water and expands to form a plugging body after encountering water. Due to the high water absorption rate of the material, the material has a certain degree of expansion after absorbing water, and can flexibly fit the inner wall of the tunnel 3, ignoring the deformation of the inner wall of the tunnel 3.

[0025] In another preferred embodiment, multiple blocking devices can be arranged in sequence along the flow direction of the gushing water. This arrangement can form layers of protection, such as Figure 7 , Figure 8 As shown, the overall blocking effect is enhanced. The design of each blocking device is reasonably configured according to the speed and flow of the water flow to ensure that each device can play its role in the best position. The coordinated work of multiple devices can maintain the overall blocking state under the multiple impacts of the water flow, further reduce the possibility of water penetration, and improve the safety and operation stability of tunnel 3.

[0026] Example 2 This embodiment proposes a working method of the full-section plugging device for water inrush in a coal mine tunnel in Embodiment 1, including: The grooves are designed for hollowing operation at the top and both sides of the pre-installation place of tunnel 3, where the width of the top groove should be at least 50 cm greater than the width of tunnel 3, depending on the width of tunnel 3; the space of the top groove depends on the height of tunnel 3. The higher the tunnel 3 is, the larger the volume of the roll is, and the larger the top groove space is; the inner wall of tunnel 3 is at least 25 cm deep and 5 cm wide, and the specific size depends on the width of tunnel 3, so that the two sides of the plugging roll 1 are stuck in the groove during the falling process to form sufficient reverse support force; the depth of the grooves on both sides of tunnel 3 depends on the width of tunnel 3. The wider the width of tunnel 3, the deeper the groove is, and the bottom counterweight is stuck to form the bottom support force; the overall groove reference ratio is: groove space volume (m 3 ): Lane 3 height (m): Lane 3 width (m) = 1:4:1; The width of the grooves on both sides is fixed at 5 cm.

[0027] After the groove is processed, the full-section sealing device for water inrush in the coal mine tunnel is installed and fixed at the top groove, and the two sides of the device are inserted into the track groove 31 to ensure that the device can fall along this direction when it is started; the bayonet 41 of the transmission shaft 11 on both sides of the device is bound to the electromagnet and then connected to the electric control switch, and the switch is installed at the connection between the main road and the tunnel 3.

[0028] When coal mine management personnel discover water gushing from the working face, they immediately notify the staff to evacuate, and turn on the device's electrical control switch after all staff have evacuated.

[0029] After the device's electric switch is turned on, the electromagnet on the side of the drive shaft 11 is de-energized, the latch 41 disengages from the slot of the drive shaft 11, and the drive shaft 11 rotates freely. The device's sealing roll 1 and the water-absorbing film bag 21 attached thereto begin to fall under the action of the bottom counterweight horizontal steel module, and during the falling process of the sealing roll 1, both sides slide down along the pre-dug grooves. The sealing roll 1 forms a steel grid protection, and the bottom of the water-absorbing film bag 21 facing the water begins to absorb water and swell after encountering water. As the amount of water increases and the water level rises, the water-absorbing film bag 21 gradually absorbs water and swells until the main body of the device is completely and flexibly attached to the top of the tunnel 3 to form a full-section sealing body (such as Fig. 9 As shown) to block the water gushing.

[0030] After draining all the water in the working face through grouting, drainage and other means, the device can be removed and a new coal mine tunnel water-gushing full-section blocking device can be reinstalled on the top to prevent water gushing from the working face.

[0031] In the above process, the design contents need to be determined according to the height of the construction section tunnel 3, including: the volume of the top groove space, the depth of the vertical grooves on both sides of the tunnel 3, the height of the main module of the device, and the volume of the filling material used in the device.

[0032] The third section of the pre-installed tunnel should be comprehensively analyzed through local geological and hydrogeological data. After an engineering safety assessment from the aspects of geological structure, rock lithology, topography and groundwater, trenching, installation and other construction should be carried out to avoid disasters such as underground landslides.

[0033] This plugging method is not only highly efficient, but also adaptable to different water inrush conditions, ensuring that the plugging effect is gradually enhanced as the water level rises. This progressive plugging strategy enables the device to effectively maintain the plugging effect even when facing large-scale water inrush, avoiding the failure of the plugging layer 2 due to excessive water pressure, thereby ensuring the safety of coal mine operations.

[0034] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A full-section plugging device for water inrush in a coal mine tunnel, characterized in that: include: Sealing rolls and sealing layers; The plugging roll includes a transmission shaft and a mesh fence, the transmission shaft is installed on the top of the tunnel, and the mesh fence is wound on the transmission shaft; The sealing layer includes multiple independent water-absorbing film bags, which are arranged on the water-facing side of the sealing roll. Each water-absorbing film bag is filled with water-swellable material. The sealing layer is made of elastic cloth at the position where it fits the tunnel, the inside of the sealing layer is made of inelastic cloth, the front side is made of permeable cloth, and the back side is made of waterproof cloth.

2. The full-section plugging device for water inrush in coal mine tunnels according to claim 1, characterized in that: The mesh fence includes cross braces and counterweight bars. There are multiple cross braces, which are arranged in parallel in the vertical direction. The counterweight bars are parallel to the cross braces and are located on the bottom side of the mesh fence. Track grooves are opened on both sides of the lane, and a bottom groove is opened at the bottom of the lane. The bottom groove and the track groove are located in the same plane. The two ends of the cross braces are embedded in the track grooves, and the counterweight bars can be embedded in the bottom grooves.

3. The full-section plugging device for water inrush in coal mine tunnels according to claim 2, characterized in that: The transverse width of the mesh fence, the length of the cross brace and the length of the counterweight bar are all at least 50 centimeters greater than the width of the lane.

4. The full-section plugging device for water inrush in coal mine tunnels according to claim 1, characterized in that: The blocking device also includes a driving mechanism, which includes an electromagnet and a latch, and the latch can be lifted and lowered in a vertical direction. A latch groove is provided on the outer periphery of the transmission shaft, and the electromagnet can absorb the latch to rise and latch in the latch groove of the transmission shaft.

5. The full-section plugging device for water inrush in coal mine tunnels according to claim 1, characterized in that: The elastic fabric is polyester elastic fabric, the inelastic fabric is geotextile, the water-permeable fabric is non-woven fabric, and the waterproof fabric is geotextile.

6. The full-section plugging device for water inrush in coal mine tunnels according to claim 1, characterized in that: The water-swellable material is a polyacrylate water-absorbing resin material.

7. The full-section plugging device for water inrush in coal mine tunnels according to claim 6, characterized in that: The water-swellable material swells 200-250 times when in contact with water, and the reaction time is 10 seconds to 1 minute.

8. The full-section plugging device for water inrush in coal mine tunnels according to claim 1, characterized in that: The blocking device is arranged at the tunnel of the mining working face connected to the main road.

9. The full-section plugging device for water inrush in coal mine tunnels according to claim 8, characterized in that: A plurality of blocking devices are arranged in sequence along the flow direction of the gushing water.

10. A working method of the coal mine tunnel water inrush full-section plugging device according to any one of claims 1 to 9, characterized in that: include: When water gushes from the working face, the transmission shaft rotates, the sealing roll and the sealing layer attached to it begin to fall, and the water-absorbing membrane bag on the water-facing surface begins to absorb water and swell when it meets water. As the amount of water increases and the water level gets higher, the water-absorbing membrane bag gradually absorbs water and swells until the sealing layer is completely flexible and fits the bottom, both sides and top of the tunnel to form a full-section sealing body to block the water gushing.

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