Underground coal mine emergency rescue drainage facility and application

Abstract

The invention discloses a coal mine underground emergency rescue drainage facility and application, and relates to the technical field of coal mine safety equipment. The facility comprises an auxiliary supporting system, a water collecting system, a drainage power system, an air pressure auxiliary drainage device and an intelligent control system. The auxiliary supporting system comprises a rail and a rail type moving platform; the water collecting system is provided with a floating platform, a filter screen and radially distributed water collecting branch pipes are arranged in a floating water collecting cover at the top of the floating platform, the branch pipes are provided with adjusting pump sets, and a bottom traveling mechanism drives the platform to move; a suction pump set of the drainage power system is connected with the connecting pipe and the drainage main pipe; the air pressure auxiliary drainage device assists drainage in the forward direction through compressed air, a filter screen is flushed in the reverse direction, and blocking is reduced. The intelligent control system depends on a sensor network and a PLC to realize remote monitoring and automatic control. The facility can efficiently collect water and quickly transfer water, improves the emergency drainage efficiency, guarantees rescue safety, and is suitable for emergency rescue of underground coal mine water permeation accidents.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mine safety equipment, in particular to a coal mine underground emergency rescue drainage facility and application. BACKGROUND

[0002] In the process of coal mine production, water inrush accident is one of the major safety hazards threatening the safety production of coal mines. Once a water inrush accident occurs, a large amount of accumulated water will quickly accumulate in the underground mine, and if the accumulated water cannot be discharged in time and efficiently, not only will it lead to the entrapment of underground operating personnel, endangering their lives and safety, but also will cause damage to underground equipment and flooding of the roadway, bringing huge property losses to coal mining enterprises, and seriously affecting the subsequent recovery production process of the coal mine. Therefore, quickly discharging the accumulated water in the underground mine is a key link in the emergency rescue work for the water inrush accident in the coal mine. At present, the emergency rescue drainage facilities used in the coal mine have many deficiencies in actual application, which are difficult to meet the needs of efficient emergency drainage. Firstly, the water collection method is relatively single, mostly using fixed point water suction method for water collection. However, the accumulated water area in the coal mine often presents complex and changeable characteristics, and the accumulated water may be scattered in multiple areas, and the water depth in different areas differs greatly. The fixed point water suction method is difficult to fully cover these complex accumulated water areas, resulting in low water collection efficiency. In addition, a large amount of impurities such as coal slag, stones, coal powder and the like are usually mixed in the accumulated water in the underground mine, which are prone to block the water suction channels of the fixed water suction points, further reducing the water collection efficiency, and even causing the drainage facility to fail to work normally. Secondly, the existing drainage facilities are inconvenient to move. In the process of water inrush accident rescue, the accumulated water area will change with the progress of drainage operation and the change of underground geological conditions, and due to the limitation of the structure design of the existing drainage facilities, it is difficult to quickly transfer to the new accumulated water area and redeploy, which will undoubtedly delay the valuable rescue opportunity and affect the overall progress of the emergency rescue work.

[0003] Therefore, the prior art needs to be improved. SUMMARY

[0004] The purpose of the present application is to overcome the defects of the existing coal mine underground emergency rescue drainage facility, such as low water collection efficiency, inconvenient movement and easy blockage by impurities, and to provide a coal mine underground emergency rescue drainage facility which can realize efficient water collection in complex accumulated water areas in the underground mine, has convenient movement ability, can effectively avoid blockage of the water suction channels, and ensure the continuous and stable progress of the drainage operation, thereby providing strong support for the emergency rescue work for the water inrush accident in the coal mine.

[0005] The present application is realized by the following technical scheme: In a first aspect, the present application provides a coal mine underground emergency rescue drainage facility, which comprises, An auxiliary support system comprising rails extending along a coal mine shaft and a track mobile platform moving above the rails, the track mobile platform being provided with a connecting pipe, A water collecting system comprising a floating platform, the top and bottom of the floating platform being respectively provided with a floating water collecting cover and a floating mechanism, the floating water collecting cover being open at the top and tapered at the bottom, the bottom interface of the floating water collecting cover being connected with the connecting pipe, the inside of the floating water collecting cover being provided with a filter screen and distributed water collecting branch pipes, a plurality of the distributed water collecting branch pipes being radially distributed around the floating water collecting cover, the water inlet end of the distributed water collecting branch pipes being provided with a plurality of water suction ports, the water outlet end of the distributed water collecting branch pipes being located in the, the distributed water collecting branch pipes all being installed with regulating pump groups; the floating water collecting cover being provided with a floating mechanism filter screen on the upper side, A water draining power system comprising a suction pump group installed on the track mobile platform, the suction pump group being connected with a water draining main pipe and the connecting pipe.

[0006] Further, in the present application, the above-mentioned further comprises a gas pressure auxiliary water draining device, the gas pressure auxiliary water draining device comprising a gas-liquid mixing cavity, the gas-liquid mixing cavity being connected with a compressed air station, the compressed air station adjusting the injection amount of compressed air, the water draining main pipe being provided with a control valve.

[0007] Further, in the present application, the above-mentioned compressed air station is provided with a three-way valve, the two outlets of the three-way valve being in opposite directions in the water draining main pipe, when the three-way valve is opened, the compressed air sent by the compressed air station flows forward in the water draining main pipe to form water vapor mixture, when the valve is closed, the compressed air sent by the compressed air station flows backward in the water draining main pipe to flush the filter screen.

[0008] Further, in the present application, the above-mentioned filter screen is configured as a concave arc, the inside of the floating water collecting cover is provided with a conical flow guide cover, the bottom of the conical flow guide cover being provided with a support connected with the floating water collecting cover, a water flow gap being provided between the bottom edge of the conical flow guide cover and the inner wall of the floating water collecting cover, the inside of the conical flow guide cover being provided with a horn cavity, the neck of the horn cavity being aligned with the concave center of the filter screen.

[0009] Further, in the present application, the bottom of the floating platform is provided with a connecting rod, the connecting rod being connected with the floating mechanism.

[0010] Further, in the present application, the water quality sensor detects the coal slurry content and the pH value of the water.

[0011] Further, in the present application, the water quality sensor detects the coal slurry content and the pH value of the water.

[0012] Further, in the present application, the inner wall of the drainage main pipe is provided with a wear-resistant layer.

[0013] Further, in the present application, the distributed water collecting branch pipe is configured as a flexible rubber pipe.

[0014] Further, in the present application, the floating platform is configured as a polyurethane foam board, and a protective shell is arranged on the outer side of the polyurethane foam board.

[0015] In a second aspect, the present application also provides an application of the coal mine underground emergency rescue drainage facility as described, which comprises the following application steps, Step one: scene evaluation and deployment, according to the type of water accumulation area, the scale of water accumulation, the water quality and the layout of the underground roadway of the coal mine underground water leakage accident scene, the track mobile platform is deployed to the initial drainage position, and the floating platform is put into the water accumulation area at the same time; Step two: system start and parameter adjustment, start the suction pump group and the adjusting pump group, obtain real-time water accumulation data through the sensor monitoring network of the intelligent control system, if it is high viscosity water, open the air pressure auxiliary drainage device to inject compressed air in the positive direction, if it is high impurity water, set the reverse flushing period of the filter screen; Step three: dynamic water collection and movement, according to the change of water depth feedback by the water level sensor, the floating platform is driven to move through the swimming mechanism, so that the distributed water collecting branch pipe covers the water accumulation area; when the local water accumulation is drained, the track mobile platform moves on the rail to transfer the whole facility to a new water accumulation area, and the water collection operation is repeated; Step four: operation monitoring and maintenance, the equipment running state is monitored in real time through the automatic control center, if there is a fault such as flow decrease and pressure abnormality, timely diagnosis and disposal are carried out; after the operation is completed, the filter screen, the drainage main pipe and other components are cleaned and maintained, so as to prepare for the next emergency rescue.

[0016] Compared with the prior art, the present application has the following advantages and beneficial effects: The water collecting system of the coal mine underground emergency rescue drainage facility adopts a distributed water collecting branch pipe distributed in a radial manner around a floating water collecting cover, and can cover a circular water accumulation area with a larger radius due to the adaptability of the flexible rubber pipe material. Compared with the traditional fixed point water suction method, the water collecting coverage area is improved. Meanwhile, multiple water suction ports are arranged at the water inlet end of each branch pipe, which can efficiently suck water and avoid water collecting interruption caused by blockage of a single water suction port. Under the same water accumulation condition, the water collecting rate is higher. The floating platform can automatically float up and down with the change of the water level, ensuring that the distributed water collecting branch pipe is always at an effective water suction depth and avoiding the problem of exposure of the water suction port caused by the decrease of the water level. Each distributed water collecting branch pipe is equipped with an independent adjusting pump group, which can dynamically adjust the power of each pump group according to the coal slime content detected by the water quality sensor and the water depth fed back by the water level sensor, reduce the flow in the high coal slime content area to prevent blockage, and increase the power in the deep water area to strongly suck water, realizing efficient water collecting according to the needs, and adapting to the complex scene of large difference in underground water depth and uneven water quality. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the example embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and other related drawings can also be obtained by those skilled in the art without creative labor. In the drawings: Figure 1 It is a schematic diagram of the coal mine underground emergency rescue drainage facility of the embodiment of the present application; Figure 2 It is a schematic diagram of the water collecting system of the embodiment of the present application; Figure 3 It is a schematic diagram of the air pressure assisted drainage device of the embodiment of the present application.

[0018] The marks in the drawings and the corresponding names of the parts are as follows: 1 - auxiliary support system, 101 - rail, 102 - track type mobile platform, 2 - water collecting system, 201 - floating water collecting cover, 2011 - conical flow guide cover, 2012 - support, 202 - distributed water collecting branch pipe, 203 - filter screen, 204 - floating platform, 3 - connecting pipe, 4 - traveling mechanism, 401 - connecting rod, 5 - adjusting pump group, 6 - drainage main pipe, 601 - control valve, 7 - air pressure assisted drainage device, 701 - liquid mixing chamber, 702 - compressed air station, 703 - three-way valve, 8 - suction pump group. DETAILED DESCRIPTION

[0019] In order to make the objects, technical solutions and advantages of the present application clearer, further detailed description will be given to the present application in combination with embodiments and drawings, the illustrative embodiments and their description are only used to explain the present application, and do not limit the present application. The following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0020] It should be noted that similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly specified and limited, if the terms "arrange", "mount", "connect" appear, they should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0021] Embodiment 1 In combination with Figures 1 to 3 As shown in the figure, an underground coal mine emergency rescue drainage facility includes an auxiliary support system 1, a water collecting system 2 and a drainage power system.

[0022] In this embodiment, in combination with Figure 1 As shown in the figure, the auxiliary support system 1 includes rails 101 extending along the coal mine shaft and a track mobile platform 102 moving on the rails 101, the track mobile platform 102 is provided with a connecting pipe 3. The rails 101 are made of high-strength manganese steel, the length thereof can be customized according to the actual length of the coal mine shaft roadway, the rails 101 are fixedly connected through bolts, and the bottom is provided with a non-slip pad layer to prevent the rails 101 from sliding in the water accumulation environment. The rails 101 are used for coal mine transportation in normal times, and are used for moving the track mobile platform 102 for drainage in emergency.

[0023] The track mobile platform 102 is provided with wheels matched with the rails 101 at the bottom, the wheels are provided with a brake device outside, which can realize the rapid start and stop and positioning of the platform, the top of the platform is provided with a load-bearing support for installing the drainage power system and other auxiliary equipment, the connecting pipe 3 is a flexible bellows, one end of which is fixedly connected with an interface on the track mobile platform 102, and the other end extends to the water collecting area and is connected with the water collecting system 2. In combination with Figure 1As shown, the water collection system 2 comprises a floating platform 204, which is configured as a polyurethane foam plate, and an outer side of the polyurethane foam plate is provided with a protective shell made of high-strength plastic material, which can effectively prevent the foam plate from being damaged by collision in the complex environment of the well. The thickness of the foam plate is designed according to the water depth and the bearing requirement, so as to ensure that it has sufficient buoyancy and can drive the floating water collection cover 201 to float up and down with the water level change.

[0024] Further, in combination with Figure 1 and Figure 2 As shown, the floating water collection cover 201 is made of corrosion-resistant plastic material, has an open top and a tapered bottom, and the bottom interface diameter is matched with the connecting pipe 3 to realize sealing connection through a flange plate. The filter screen 203 is made of stainless steel and has a pore size of 5-10 mm, which can effectively filter large-particle impurities such as cinder and stone in the accumulated water. The filter screen 203 is fixedly connected with the inner wall of the floating water collection cover 201, and can also be connected through buckles for easy disassembly and cleaning.

[0025] In combination with Figure 1 and Figure 2 As shown, the distributed water collection branch pipe 202 is configured as a flexible rubber pipe with a pipe diameter of 50-80 mm. Six to eight branch pipes are arranged in each water collection cover, and the length of the branch pipe is 2-3 meters. The branch pipes are evenly distributed in a radial manner around the water collection cover. The water suction port at the water inlet end is in a trumpet shape and has a number of 4-6, which are evenly distributed on the end side wall of the distributed water collection branch pipe 202. The regulating pump group 5 is a water pump connected with the intelligent control system through wires, which can realize automatic regulation of flow. In this embodiment, in combination with Figure 1 As shown, the bottom of the floating platform 204 is provided with a connecting rod 401 connected with the swimming mechanism 4. The connecting rod 401 is made of stainless steel and is screw-connected at one end with the interface at the bottom of the floating platform 204 and screw-connected at the other end with the swimming mechanism 4. The swimming mechanism 4 comprises a propeller and a direction controller. The propeller is a small underwater motor, which can provide sufficient thrust to drive the floating platform 204 to move in the accumulated water area. The direction controller is connected with the intelligent control system through wireless signals, which can realize accurate steering and positioning of the platform. In combination with Figure 1 and Figure 3As shown, in the present embodiment, the drainage power system comprises a suction pump set 8 mounted on the track-type mobile platform 102, which is connected with the drainage main pipe 6 and the connecting pipe 3. The suction pump set 8 adopts a horizontal centrifugal pump, the pump set inlet is connected with the connecting pipe 3 through a pipeline, and the outlet is connected with the drainage main pipe 6; the inner wall of the drainage main pipe 6 is provided with a wear-resistant layer, which adopts a ceramic coating with a thickness of 2-3 mm, which can effectively improve the wear resistance of the pipeline and prolong the service life; the drainage main pipe 6 is provided with a control valve 601, which adopts an electric gate valve connected with the intelligent control system through wires, so as to realize the opening and closing of the pipeline. In combination Figure 1 And Figure 3 As shown, the facility further comprises an air pressure auxiliary drainage device 7, which comprises a gas-liquid mixing chamber 701 connected with a compressed air station 702 for adjusting the injection amount of compressed air. The gas-liquid mixing chamber 701 is made of stainless steel and can be internally provided with a spiral guide plate to mix the compressed air with the accumulated water and improve the drainage efficiency; the inlet of the gas-liquid mixing chamber 701 is connected with the drainage main pipe 6.

[0026] Further, the compressed air station 702 adopts a mobile air compressor with a rated exhaust pressure of 0.8-1.2 MPa and a rated exhaust volume of 1-2 cubic meters per minute; the compressed air station 702 is connected with the gas-liquid mixing chamber 701 through a high-pressure air pipe, and a pressure regulating valve is arranged on the air pipe to adjust the injection amount of compressed air according to the drainage demand. The compressed air station 702 is provided with a three-way valve 703, two outlets of which are opposite in the drainage main pipe 6; when the control valve 601 is opened and only the right port of the three-way valve 703 is opened, the compressed air sent by the compressed air station 702 flows forward in the drainage main pipe 6 to form a water vapor mixture; when the control valve 601 is closed and only the left port of the three-way valve 703 is opened, the compressed air sent by the compressed air station 702 flows reversely in the drainage main pipe 6 to flush the filter screen 203 and blow away the cinder particles collected at the bottom of the filter screen 203.

[0027] The three-way valve 703 is controlled to be opened and closed by an electric actuator connected with the intelligent control system, so as to realize the automatic switching of the valve; when forward auxiliary drainage is needed, the three-way valve 703 is switched to the forward channel, the compressed air enters the drainage main pipe 6 to flow forward and mix with the accumulated water to form a water vapor mixture, thereby reducing the fluid density and improving the drainage speed; when the filter screen 203 is blocked, the three-way valve 703 is switched to the reverse channel, the compressed air flows reversely to flush the filter screen 203 at high pressure, thereby removing the impurities on the filter screen 203 and restoring the filtering function of the filter screen 203. In combination Figure 2As shown, in order to let the compressed air have better flushing effect on the filter screen 203, a conical fairing 2011 is arranged. Since the filter screen 203 is concave and arc-shaped, after the accumulated water sucked by the distributed water collecting branch pipe 202 is filtered through the filter screen 203, most of the dregs remain in the bottom center of the filter screen 203. The bottom of the conical fairing 2011 is fixedly connected through the support and floating type water collecting cover 201, and a water flow gap is arranged between the bottom edge of the conical fairing 2011 and the inner wall of the floating type water collecting cover 201, facilitating the downward flow of water. When the three-way valve 703 is switched to the reverse channel, the compressed air flows reversely to the conical fairing 2011, and the acceleration is increased through the conical fairing 2011, so that the flushing effect on the dregs at the bottom of the filter screen 203 is better.

[0028] The facility also includes an intelligent control system, which includes a sensor monitoring network and an automatic control center. The sensor monitoring network includes water level sensors, flow sensors, pressure sensors and water quality sensors installed on the suction pump group 8, the regulating pump group 5 and the drainage main pipe 6, and the water quality sensors are connected to the automatic control center through ZigBee or LoRa wireless transmission modules. The automatic control center takes an industrial programmable logic controller (PLC) as the core control unit, and combines with a human-machine interface (HMI) to have remote monitoring, automatic control, fault diagnosis and alarm functions. The water level sensor adopts a drop-in type liquid level transmitter, which is installed at different positions in the coal mine to monitor the accumulated water depth in real time. The flow sensor adopts an electromagnetic flowmeter to monitor the drainage flow in real time. The pressure sensor adopts a diffused silicon pressure transmitter to monitor the pipeline pressure in real time. The water quality sensor detects the coal slime content and the pH value of the water to monitor the water quality in real time. The PLC of the automatic control center adopts a Siemens S7-1200 series, which can simultaneously access multiple sensor signals and realize automatic control of the equipment according to a preset program. The HMI adopts a 10-inch touch screen, which can display the equipment operating parameters such as water level, flow, pressure, water quality, equipment working state and fault information in real time. All sensors are connected to the signal input end of the industrial PLC (Siemens S7-1200 series) through wires or wireless transmission modules (ZigBee or LoRa), and the control ends of the electric actuators of the suction pump group 8, the regulating pump group 5, the control valve 601, the three-way valve 703 and the motor of the traveling mechanism 4 are connected to the output end of the PLC through wires. The HMI is connected to the PLC through a communication line to build an industrial Ethernet, realizing communication between the PLC and the ground monitoring center.

[0029] The operator can set parameters, start and stop the device, etc. through the touch screen; the remote monitoring function is realized through industrial Ethernet, and device operation data can be transmitted to the ground monitoring center, and the ground personnel can remotely monitor the downhole drainage operation in real time; the fault diagnosis function can automatically judge the fault type such as filter screen blockage, pump set failure, pipeline leakage, etc. according to the abnormal data fed back by the sensor, and timely remind the operator through the sound and light alarm device, and display the fault position and disposal suggestion on the HMI.

[0030] Embodiment 2 The embodiment provides an application of an emergency rescue drainage facility in a coal mine underground, including the following steps, Step one: scene evaluation and deployment, according to the type of the water accumulation area in the coal mine underground water leakage accident scene, goaf, roadway, working face, water accumulation scale, water quality and underground roadway layout, the track type mobile platform 102 is deployed to the initial drainage position, and the floating platform 204 is put into the water accumulation area; Step two: system start and parameter adjustment, start the suction pump set 8 and adjust the pump set 5, obtain real-time water accumulation data through the sensor monitoring network of the intelligent control system, if it is high viscosity water accumulation, open the air pressure auxiliary drainage device 7 to inject compressed air in the positive direction; if it is high impurity water accumulation, set the filter screen 203 reverse flushing period; Step three: dynamic water collection and movement, according to the change of water depth feedback by the water level sensor, the floating platform 204 is driven to move through the swimming mechanism 4, so that the distributed water collection branch pipe 202 covers the water accumulation area; when the local water accumulation is drained, the whole facility is transferred to a new water accumulation area through the movement of the track type mobile platform 102 on the rail 101, and the water collection operation is repeated; Step four: operation monitoring and maintenance, the running state of the device is monitored in real time through the automatic control center, if there is a fault such as flow decrease and pressure anomaly, timely diagnosis and disposal are made; after the operation is completed, the filter screen 203, the drainage main pipe 6 and other components are cleaned and maintained, and preparation is made for the next emergency rescue.

[0031] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above description is only a specific embodiment of the present application and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A coal mine emergency rescue drainage facility in a coal mine, characterized in that, Comprising, auxiliary support system (1), the auxiliary support system (1) includes a rail (101) extending along the coal mine shaft and a track mobile platform (102) moving on the rail (101), the track mobile platform (102) is provided with a connecting pipe (3), water collecting system (2) comprising a floating platform (204), the top and bottom of the floating platform (204) are respectively provided with a floating water collecting cover (201) and a swimming mechanism (4), the top of the floating water collecting cover (201) is open and the bottom is tapered, the bottom interface of the floating water collecting cover (201) is connected with the connecting pipe (3), the inside of the floating water collecting cover (201) is provided with a filter screen (203) and a distributed water collecting branch pipe (202), a plurality of the distributed water collecting branch pipes (202) are distributed radially around the floating water collecting cover (201), the water inlet end of the distributed water collecting branch pipe (202) is provided with a plurality of water suction ports, the water outlet end of the distributed water collecting branch pipe (202) is located in the, the distributed water collecting branch pipe (202) is installed with an adjusting pump group (5); the floating water collecting cover (201) is provided with a swimming mechanism (4) filter screen (203) on the upper side, drainage power system, the drainage power system includes a suction pump group (8) installed on the track mobile platform (102), the suction pump group (8) is connected with a drainage main pipe (6) and the connecting pipe (3).

2. Coal mine emergency rescue drainage facility according to claim 1, characterized in that, It also includes a pneumatic auxiliary drainage device (7), the pneumatic auxiliary drainage device (7) includes a gas-liquid mixing chamber (701), the gas-liquid mixing chamber (701) is connected with a compressed air station (702), the compressed air station (702) adjusts the injection amount of compressed air, the drainage main pipe (6) is provided with a control valve (601).

3. Coal mine emergency rescue drainage facility according to claim 2, characterized in that, The compressed air station (702) is provided with a three-way valve (703), two outlets of the three-way valve (703) are in opposite directions in the drainage main pipe (6), when the three-way valve (703) is opened, the compressed air sent by the compressed air station (702) flows in the positive direction of the drainage main pipe (6) to form water vapor mixture, when the valve is closed, the compressed air sent by the compressed air station (702) flows in the reverse direction of the drainage main pipe (6) to flush the filter screen (203).

4. Coal mine emergency rescue drainage facility according to claim 3, characterized in that, The filter screen (203) is configured as a concave arc, the inside of the floating water collecting cover (201) is provided with a conical flow guide cover (2011), the bottom of the conical flow guide cover (2011) is provided with a support (2012) connected with the floating water collecting cover (201), a water flow gap is provided between the bottom edge of the conical flow guide cover (2011) and the inner wall of the floating water collecting cover (201), a horn cavity is provided in the inside of the conical flow guide cover (2011), the narrow opening of the horn cavity is aligned with the concave center of the filter screen (203).

5. The coal mine emergency rescue drainage facility according to claim 1, characterized in that, The bottom of the floating platform (204) is provided with a connecting rod (401), the connecting rod (401) is connected with the swimming mechanism (4).

6. The coal mine emergency rescue drainage facility according to claim 1, characterized in that, Also include intelligent control system, the intelligent control system includes sensor monitoring network and automation control center, the sensor monitoring network includes the water level sensor, flow sensor, pressure sensor and water quality sensor installed on the pumping group (8), the regulating pump group (5), the drainage main pipe (6), the water quality sensor is connected with automation control center through ZigBee or LoRa wireless transmission module;The automation control center is with industrial-grade programmable logic controller PLC as core control unit, combines human-computer interface HMI, has remote monitoring, automation control, fault diagnosis and alarm function.

7. Coal mine emergency rescue drainage facility in a coal mine shaft according to claim 6, characterized in that, The water quality sensor detects the coal slime content and the pH of the water.

8. The coal mine emergency rescue drainage facility according to claim 1, characterized in that, The inner wall of the drainage main pipe (6) is provided with a wear-resistant layer, and the distributed water collecting branch pipe (202) is configured as a flexible rubber pipe.

9. The coal mine emergency rescue drainage facility according to claim 1, characterized in that, The floating platform (204) is configured as a polyurethane foam board, and the outer side of the polyurethane foam board is provided with a protective shell.

10. Use of the coal mine emergency rescue drainage facility according to claim 1, characterized in that, The application comprises the following application steps, Step one: scene evaluation and deployment, according to the water accumulation area type (goaf, roadway, working face), water accumulation scale, water quality and underground roadway layout of the coal mine underground water leakage accident scene, the track type mobile platform (102) is deployed to the initial drainage position, and the floating platform (204) is put into the water accumulation area at the same time; Step two: system startup and parameter adjustment, start the pumping group (8) and the regulating pump group (5), obtain real-time water accumulation data through the sensor monitoring network of the intelligent control system, if it is high-viscosity water, open the air pressure auxiliary drainage device (7) to inject compressed air in the positive direction;If it is high-impurity water, set the filter screen (203) reverse flushing cycle; Step three: dynamic water collection and movement, according to the change of water depth feedback by the water level sensor, the floating platform (204) is driven to move through the swimming mechanism (4), so that the distributed water collecting branch pipe (202) covers the water accumulation area;When the local water accumulation is drained, the whole facility is transferred to the new water accumulation area through the movement of the track type mobile platform (102) on the rail (101), and the water collection operation is repeated; Step four: operation monitoring and maintenance, the equipment running state is monitored in real time through the automation control center, if there is flow drop, pressure anomaly and other faults, timely diagnosis and disposal;After the operation, clean and maintain the filter screen (203), drainage main pipe (6) and other components, and prepare for the next emergency rescue.

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