Flow guide structure for drainage of coal mine underground reservoir

Abstract

The invention relates to the technical field of coal mine engineering, and discloses a flow guide structure for drainage of a coal mine underground reservoir, the flow guide structure comprises a water guide roadway, a trigger plate and a water blocking assembly, the water guide roadway is used for being communicated with the underground reservoir, and a water guide groove is formed in the water guide roadway. The trigger plate is located in the water guide groove, and the first end of the trigger plate is rotationally connected with the bottom wall of the water guide groove. The water blocking assembly is connected with the second end of the trigger plate and comprises a water blocking plate. In the daily state, the water blocking plate is located in the water guide groove, and in the water drainage state, when water falls into the water guide groove, the trigger plate can be driven to rotate, and the water blocking plate is driven to stretch out of the water guide groove to close the water guide roadway. The trigger plate is started through gravity and impulsive force of drainage, so that the water blocking plate can quickly block the water guide roadway and seal and isolate the water guide roadway, personnel in the water guide roadway can avoid danger in emergency, the safety of the drainage state is improved, the working environment in the water guide roadway is prevented from being damaged by drainage, and the influence of drainage on the water guide roadway is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of coal mine engineering, and in particular to a diversion structure for discharging water from underground reservoirs in coal mines. Background Art

[0002] The underground water reservoir of a coal mine solves the problem of mine water storage and use in the coal mine. In order to ensure the safety of underground water storage in the coal mine underground reservoir, when emergencies such as mine earthquakes and impact ground pressure occur, it is necessary to discharge water and reduce the pressure in the underground reservoir to ensure the safety of the underground reservoir.

[0003] With the expansion of mining activities in the same-layer coal and the lower-layer coal, the underground water reservoirs of existing coal mines have all utilized the goaf areas. In order to facilitate water use and safe production, the underground water reservoirs of coal mines are far away from water tanks and other forced drainage devices. In the event of large-scale water discharge, the production of the same-layer and lower-layer tunnels and working faces is easily affected. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] The technical solution of this application proposes a diversion structure for the discharge of underground water reservoirs in coal mines, and the diversion structure includes: a water diversion tunnel, a trigger plate and a water blocking assembly. The water diversion tunnel is used to connect the underground reservoir, and a water diversion groove is provided in the water diversion tunnel. The trigger plate is located in the water diversion groove, and the first end of the trigger plate is rotatably connected to the bottom wall of the water diversion groove. The water blocking assembly is connected to the second end of the trigger plate, and the water blocking assembly includes a water blocking plate. Among them, in the normal state, the water blocking plate is located in the water diversion groove. In the water discharge state, when water falls into the water diversion groove, it can drive the trigger plate to rotate, and drive the water blocking plate to extend out of the water diversion groove to close the water diversion tunnel.

[0006] In some technical solutions provided in the present application, the water-blocking assembly also includes: a transmission plate, one end of which is rotatably connected to the trigger plate, the other end of which is connected to the bottom of the water-blocking plate and slidably connected to the bottom wall of the water guide groove, and an angle is formed between the transmission plate and the water-blocking plate.

[0007] In some technical solutions provided in the present application, a limiting portion is provided on the bottom wall of the water guide groove, and the water blocking assembly also includes: a support rod, which is located on the side of the water blocking plate away from the trigger plate, and the top end of the support rod is rotatably connected to the water blocking plate and forms a distance with the bottom wall of the water guide groove. In the water discharge state, the bottom end of the support rod is clamped with the limiting portion.

[0008] In some technical solutions provided in the present application, a step and a baffle are provided on the side wall of the water-facing side of the water guide trough. The baffle is provided at the edge of the top surface of the step, and the baffle extends upward in a direction away from the top surface.

[0009] In some technical solutions provided by the present application, the diversion structure further includes: a cover plate, which is covered on the water guide groove, the top surface of the cover plate is coplanar with the bottom surface of the water guide roadway, and a drain hole is provided on the cover plate.

[0010] In some technical solutions provided by the present application, the diversion structure further includes: a transmission assembly, the transmission assembly is connected to the cover plate, the transmission assembly is connected to the trigger plate or the water blocking plate, and in the water discharge state, the trigger plate or the water blocking plate drives the cover plate to avoid the water blocking plate through the transmission assembly.

[0011] In some technical solutions provided by the present application, the number of cover plates is multiple, and the transmission assembly includes: two fixed pulleys and a flexible cable. The two fixed pulleys are relatively arranged on the side walls of the water guide groove, the flexible cable is wound around the two fixed pulleys, one end of the flexible cable is connected to the top end of the water blocking plate, and the other end of the flexible cable is connected to at least one cover plate. When the water blocking plate extends out of the water guide groove, it drives the cover plate to move above the adjacent cover plate.

[0012] In some technical solutions provided by the present application, the diversion structure further includes: a water guide well and a water discharge reservoir. The water guide well is arranged on the bottom surface of the water guide groove, a water guide hole is provided on the trigger plate or the transmission plate, when the water blocking plate closes the roadway, the water guide hole is communicated with the water guide well, and the water discharge reservoir is communicated with the bottom of the water guide well.

[0013] In some technical solutions provided by the present application, the diversion structure further includes: a plurality of energy dissipation plates and / or a plurality of room pillars. The plurality of energy dissipation plates are arranged in the water guide well at intervals, and the plurality of room pillars are arranged in the water discharge reservoir at intervals.

[0014] In some technical solutions provided by the present application, the diversion structure further includes: a seal and / or an enlarged excavation roadway. The seal is arranged on the wall surface of the water guide roadway, the water blocking plate abuts against the seal when closing the water guide roadway, and the enlarged excavation roadway is communicated with the water guide roadway and is located on the side of the water guide groove.

[0015] Compared with the related art, the present invention has at least the following beneficial effects: The trigger plate is activated by the gravity and impact force of the water discharge, and the water blocking plate is linked to quickly close the water guide roadway, so that the water blocking plate can quickly block the water guide roadway, isolate and seal the water guide roadway, enable the personnel in the water guide roadway to take emergency refuge, improve the safety of the water discharge state, prevent the water discharge from damaging the working environment in the water guide roadway, and reduce the impact of the water discharge on the water guide roadway. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By reading the detailed descriptions of some embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing some embodiments and are not considered to be a limitation of the present application. And throughout the drawings, the same reference numerals are used to represent the same components. In the drawings: Figure 1Schematic diagram of a diversion structure according to an embodiment provided by the present application; Figure 2 Schematic diagram of a diversion structure according to an embodiment provided by the present application in the water discharge state; Figure 3 Schematic diagram of a diversion structure according to an embodiment provided by the present application in the normal state; Figure 4 Shows Figure 3 Enlarged view of the circled part at A in Figure 5 Partial structural schematic diagram of a diversion structure according to an embodiment provided by the present application.

[0017] Among them, Figures 1 to 5 The corresponding relationship between the reference numerals and the component names in 10 Diversion structure, 100 Water diversion roadway, 110 Water diversion trough, 111 Limiting part, 112 Step, 113 Baffle, 200 Trigger plate, 300 Water blocking component, 310 Water blocking plate, 320 Transmission plate, 321 Water diversion hole, 330 Support rod, 400 Cover plate, 410 Drainage hole, 420 Guide surface, 500 Transmission component, 510 Fixed pulley, 520 Flexible cable, 600 Water diversion well, 610 Energy dissipation plate, 700 Water discharge reservoir, 710 Room pillar, 800 Sealing member, 900 Excavated roadway. Specific implementation manners

[0018] In order to better understand the above technical solutions, the technical solutions of the embodiments of the present application will be described in detail below through the accompanying drawings and specific embodiments. It should be understood that the specific features in the embodiments of the present application and the embodiments are detailed descriptions of the technical solutions of the embodiments of the present application, rather than limitations on the technical solutions of the present application. Without conflict, the technical features in the embodiments of the present application and the embodiments can be combined with each other.

[0019] An embodiment of the first aspect of the present application provides a diversion structure 10 for discharging water from an underground coal mine reservoir, as shown in Figure 1 、 Figure 2 And Figure 3 Shown, the diversion structure 10 includes: a water diversion roadway 100, a trigger plate 200 and a water blocking component 300. The water diversion roadway 100 is used to connect the underground reservoir, and a water diversion trough 110 is provided in the water diversion roadway 100. The trigger plate 200 is located in the water diversion trough 110, and the first end of the trigger plate 200 is rotatably connected to the bottom wall of the water diversion trough 110. The water blocking component 300 is connected to the second end of the trigger plate 200, and the water blocking component 300 includes a water blocking plate 310. Among them, in the normal state, the water blocking plate 310 is located in the water diversion trough 110. In the water discharge state, when water falls into the water diversion trough 110, it can drive the trigger plate 200 to rotate and drive the water blocking plate 310 to extend out of the water diversion trough 110 to close the water diversion roadway 100.

[0020] In this embodiment, the water-conducting roadway 100 is used for the passage of personnel and equipment in daily coal mine work, communicates with the underground reservoir, and is located on the water discharge path of the underground reservoir. A water guide groove 110 is provided on the bottom surface of the water-conducting roadway 100, and the trigger plate 200 is located in the water guide groove 110 and is arranged on the water inlet side of the water guide groove 110, so as to Figure 2 take as an example, the right side is the water inlet side of the water guide groove 110. The first end of the trigger plate 200 is rotatably connected to the bottom wall of the water guide groove 110, and the second end of the trigger plate 200 is connected to the water blocking plate 310. When the trigger plate 200 rotates, its second end can drive the water blocking plate 310 to move upward.

[0021] Exemplarily, the trigger plate 200 and the water blocking plate 310 can be connected by a lever. The trigger plate 200 and the water blocking plate 310 are respectively located on both sides of the lever fulcrum. When the trigger plate 200 moves downward, the lever can drive the water blocking plate 310 to move upward.

[0022] In the normal state, the water blocking assembly 300 is located in the water guide groove 110, and there is a gap between the second end of the trigger plate 200 and the bottom wall of the water guide groove 110, so that the trigger plate 200 is inclined towards the water inlet side of the water guide groove 110. In the water discharge state, the water in the underground reservoir flows into the water-conducting roadway 100 and then falls into the water guide groove 110. When the water falls, it presses the second end of the trigger plate 200 downward under the action of gravity. The distance between the second end of the trigger plate 200 and the bottom wall of the water guide groove 110 gradually decreases, causing the trigger plate 200 to rotate towards the direction close to the bottom wall of the water guide groove 110, and driving the water blocking plate 310 to extend upward out of the water guide groove 110 during the rotation process, so that the water blocking plate 310 blocks the water-conducting roadway 100 until the water-conducting roadway 100 enters the closed state.

[0023] The trigger plate 200 is activated by the gravity and impact force of the water discharge, and the water blocking plate 310 is linked to quickly close the water-conducting roadway 100, enabling the water blocking plate 310 to quickly block the water-conducting roadway 100, isolating the water-conducting roadway 100, allowing the personnel in the water-conducting roadway 100 to take emergency refuge, improving the safety of the water discharge state, preventing the water discharge from damaging the working environment in the water-conducting roadway 100, and reducing the impact of the water discharge on the water-conducting roadway 100.

[0024] In some embodiments provided by the present application, such as Figure 1 、 Figure 2 and Figure 3 shown, the water blocking assembly 300 further includes: a transmission plate 320. One end of the transmission plate 320 is rotatably connected to the trigger plate 200, the other end of the transmission plate 320 is connected to the bottom of the water blocking plate 310, and is slidably connected to the bottom wall of the water guide groove 110. An included angle is formed between the transmission plate 320 and the water blocking plate 310.

[0025] In this embodiment, the two ends of the transmission plate 320 are connected to the second end of the trigger plate 200 and the bottom end of the water blocking plate 310, and the transmission plate 320 and the water blocking plate 310 extend in different directions respectively, so that an angle is formed between the transmission plate 320 and the water blocking plate 310, for example, the angle can be 90°. In the respective extension directions, the length of the transmission plate 320 is less than the length of the water blocking plate 310, so that the transmission plate 320 and the water blocking plate 310 form an L shape. The transmission plate 320 and the water blocking plate 310 can be an integrated structure to improve the structural strength of the water blocking assembly 300. One end of the transmission plate 320 is hinged to the trigger plate 200, and the other end can be provided with a pulley to slide on the bottom wall of the water guide groove 110.

[0026] In the normal state, the highest points of the transmission plate 320 and the water blocking plate 310 are at the same horizontal height. In the water discharge state, when the trigger plate 200 rotates, one end of the transmission plate 320 is driven to move downward, and the other end of the transmission plate 320 slides along the bottom surface of the water guide groove 110, and drives the top end of the water blocking plate 310 to rotate upward out of the water guide groove 110 until the water blocking plate 310 is in an upright state. The transmission structure is simple and reliable, and has a high rotation efficiency. In addition, the water discharge presses the transmission plate 320 firmly on the bottom surface of the water guide groove 110 under the action of gravity, so that the bottom of the water blocking plate 310 is stably supported by the structure, thereby improving the stability and reliability of the water blocking plate 310.

[0027] In some embodiments provided in this application, Figure 5 As shown, a limiting portion 111 is provided on the bottom wall of the water guide groove 110, and the water blocking assembly 300 further includes: a support rod 330, the support rod 330 is located on the side of the water blocking plate 310 away from the trigger plate 200, the top end of the support rod 330 is rotatably connected to the water blocking plate 310, and forms a gap with the bottom wall of the water guide groove 110, and in the water discharge state, the bottom end of the support rod 330 is clamped with the limiting portion 111.

[0028] In this embodiment, the bottom wall of the water guide groove 110 is provided with a limiting portion 111 that cooperates with the support rod 330. For example, the limiting portion 111 can be a limiting block or a limiting groove, and the bottom wall can be provided with multiple limiting portions 111 at intervals. The support rod 330 is located on the back side of the water blocking plate 310, and the top of the support rod 330 is rotatably connected to the middle position of the back side of the water blocking plate 310. When the water blocking plate 310 rotates out of the water guide groove 110, the top of the support rod 330 follows the water blocking plate 310 to be lifted, so that the bottom of the support rod 330 moves toward the direction close to the water blocking plate 310 until it is engaged with the limiting portion 111 to form a check structure, so that the support rod 330 can support the back side of the water blocking plate 310, provide structural support for the water blocking plate 310, improve the ability of the water blocking plate 310 to cope with the impact of water flow, and improve the stability of the water blocking plate 310 in the water blocking state.

[0029] In some embodiments provided in this application,Figure 2 and Figure 3 As shown in Figure 3 , on the side wall of the water guide groove 110 on the water-facing side, there are a step 112 and a baffle 113. The baffle 113 is arranged at the top edge of the top surface of the step 112, and the baffle 113 extends upward in a direction away from the top surface.

[0030] In this embodiment, the side wall of the water guide groove 110 on the water-facing side is stepped. A baffle 113 is arranged at any top edge of the step 112, and the baffle 113 extends upward out of the top surface. When the discharged water falls onto the top surface of the step 112, the baffle 113 blocks the water flow from flowing directly downward, causing the water flow to accumulate on the top surface of the step 112, and the height of the water surface gradually increases. When the height of the water surface exceeds the height of the baffle 113, the water flow continues to flow onto the top surface of the next lower step 112 and continues to accumulate on the lower step 112. The step 112 and the baffle 113 enable the discharged water to fall into the water guide groove 110 step by step, enabling the water flow to be buffered multiple times, reducing the head energy of the discharged water, reducing the impact force of the water flow, and making the water flow flowing into the water guide groove 110 smoother.

[0031] In some embodiments provided by the present application, as Figure 1 and Figure 3 shown, the diversion structure 10 further includes: a cover plate 400. The cover plate 400 covers the water guide groove 110. The top surface of the cover plate 400 is coplanar with the bottom surface of the water guide roadway 100, and a drain hole 410 is provided on the cover plate 400.

[0032] In this embodiment, a cover plate 400 is provided above the water guide groove 110. The elevation of the top surface of the cover plate 400 is flush with the road surface of the water guide roadway 100, enabling personnel and tools to pass through the water guide groove 110 by stepping on the cover plate 400, ensuring the integrity of the passage path, and meeting the daily transportation needs of the water guide roadway 100. The drain hole 410 penetrates the cover plate 400, enabling the water flow to enter the water guide groove 110 through the drain hole 410, and enabling the water flow to smoothly drive the trigger plate 200 to rotate.

[0033] Exemplarily, a support steel beam is provided below the cover plate 400 to improve the stability and support strength of the cover plate 400.

[0034] In some embodiments provided by the present application, as Figure 2 and Figure 3 shown, the diversion structure 10 further includes: a transmission assembly 500. The transmission assembly 500 is connected to the cover plate 400, and the transmission assembly 500 is connected to the trigger plate 200 or the water blocking plate 310. In the water discharge state, the trigger plate 200 or the water blocking plate 310 drives the cover plate 400 to avoid the water blocking plate 310 through the transmission assembly 500.

[0035] In this embodiment, in the water discharge state, when the trigger plate 200 or the water blocking plate 310 moves, it can drive the transmission assembly 500 to move, and then drive the cover plate 400 to move away from the water blocking plate 310, so as to avoid the movement path of the water blocking plate 310 and prevent the cover plate 400 from interfering with the lifting of the water blocking plate 310, enabling the water blocking plate 310 to smoothly extend out of the water guide groove 110 to block the water guide roadway 100.

[0036] Exemplarily, the transmission assembly 500 may include a steering pulley. The steering pulley is arranged on the top wall of the water guide roadway 100 and near the water inlet side of the water guide groove 110. A sliding rope is wound around the steering pulley. One end of the sliding rope is connected to the trigger plate 200, and the other end of the sliding rope is connected to the end of the cover plate 400. When the water discharge triggers the movement of the trigger plate 200, one end of the sliding rope follows the trigger plate 200 to move downward, and the other end of the sliding rope lifts the end of the cover plate 400 upward and pulls the cover plate 400 laterally, causing the cover plate 400 to rotate or move towards the water inlet side.

[0037] In some embodiments provided by the present application, such as Figure 2 , Figure 3 and Figure 4 as shown, the number of cover plates 400 is multiple. The transmission assembly 500 includes: two fixed pulleys 510 and a flexible cable 520. The two fixed pulleys 510 are oppositely arranged on the side walls of the water guide groove 110. The flexible cable 520 is wound around the two fixed pulleys 510. One end of the flexible cable 520 is connected to the top end of the water blocking plate 310, and the other end of the flexible cable 520 is connected to at least one cover plate 400. When the water blocking plate 310 extends out of the water guide groove 110, it drives the cover plate 400 to move above the adjacent cover plate 400.

[0038] In this embodiment, the cover plate 400 is designed in a segmented manner. The two fixed pulleys 510 are respectively located on both sides of the water guide groove 110. After one end of the flexible cable 520 is connected to the top end of the water blocking plate 310, it is wound around one fixed pulley 510. The flexible cable 520 extends towards the water inlet side and is wound upward around the other fixed pulley 510, so that the other end of the flexible cable 520 is connected to at least one cover plate 400. When the water blocking plate 310 is lifted upward, it can pull one end of the flexible cable 520 upward, and the other end of the flexible cable 520 pulls the cover plate 400, thereby driving the cover plate 400 to move, causing the cover plate 400 to be lifted to the top surface of the adjacent cover plate 400 during the movement, and the cover plates 400 are in a stacked state, thus providing an avoidance space for the extension of the water blocking plate 310.

[0039] Exemplarily, rollers may be provided at the end of the cover plate 400 connected to the flexible cable 520, and the cover plate 400 rolls above the adjacent cover plate 400 through the rollers. Or, as Figure 4As shown, the cover plate 400 connected to the flexible cable 520 may be provided with a guiding surface 420. The guiding surface 420 is located on the water-facing side of the bottom surface of the cover plate 400. The guiding surface 420 may be an inclined surface or a curved surface, so that the end of the cover plate 400 gradually shrinks. When the cover plate 400 moves, the guiding surface 420 abuts against the adjacent cover plate 400, facilitating the lifting of the cover plate 400 above the adjacent cover plate 400.

[0040] Exemplarily, the cover plate 400 pulled by the flexible cable 520 may be a single cover plate 400 or multiple interconnected cover plates 400.

[0041] Exemplarily, the number of the transmission assemblies 500 may be two. The two transmission assemblies 500 are respectively located on both sides of the cover plate 400, making the movement of the cover plate 400 more stable.

[0042] In some embodiments provided by the present application, as Figure 1 shown, the diversion structure 10 further includes: a guide well 600 and a water discharge reservoir 700. The guide well 600 is arranged on the bottom surface of the guide groove 110. A water guide hole 321 is provided on the trigger plate 200 or the transmission plate 320. When the water blocking plate 310 closes the roadway, the water guide hole 321 communicates with the guide well 600, and the water discharge reservoir 700 is communicated with the bottom of the guide well 600.

[0043] In this embodiment, the guide well 600 and the water discharge reservoir 700 may be arranged by using the existing interlayer channels and goafs in the coal mine. The guide well 600 extends in the vertical direction, and both ends of the guide well 600 are respectively communicated with the guide groove 110 and the water discharge reservoir 700. When discharging water, the trigger plate 200 and the transmission plate 320 are laid flat on the bottom surface of the guide groove 110, and the water guide hole 321 avoids the wellhead of the guide well 600, preventing the trigger plate 200 or the transmission plate 320 from obstructing the downward flow of water, so that the water can smoothly flow into the guide well 600. The water flows into the water discharge reservoir 700 through the guide well 600, guiding the water discharge direction. The guide well 600 and the water discharge reservoir 700 form an emergency water discharge and water guiding channel, reducing the pressure on the water blocking assembly 300, guiding the emergency discharged water out of the accident area, reducing the water inflow and the peak water inflow of a single roadway underground, discharging a large amount of mine water in a short time, controlling the potential threat of water disasters, and playing a role in energy dissipation and water storage, providing a safety guarantee for the emergency water discharge of the underground reservoir.

[0044] Exemplarily, the guide well 600 may adopt a spiral or folded-back shape.

[0045] In some embodiments provided by the present application, as Figure 1 and Figure 2As shown, the diversion structure 10 further includes: a plurality of energy dissipation plates 610 and / or a plurality of room pillars 710. The plurality of energy dissipation plates 610 are arranged at intervals in the guide well 600, and the plurality of room pillars 710 are arranged at intervals in the drainage reservoir 700.

[0046] In this embodiment, the energy dissipation plate 610 can adopt a stepped or swirling structure. When the water flow in the guide well 600 flows through the energy dissipation plate 610 during the falling process, the flow rate can be slowed down, thereby reducing the impact force of the flowing water. In the lower coal seam, a room pillar 710 mining method is used to establish a drainage space, which is connected to the confined coal pillar in the form of artificial sealing to enclose the drainage space. A water retaining wall can be set at the connection between the guide well 600 and the drainage reservoir 700. After the water flow flows into the drainage reservoir 700, the room pillar 710 and the water retaining wall can hinder the flow of the water and reduce the water flow rate. By setting the energy dissipation plate 610 and the room pillar 710, the impact force and flow energy of the water flow can be weakened, enabling the water flow to flow smoothly, and improving the safety and stability of drainage.

[0047] In some embodiments provided by the present application, as Figure 1 and Figure 2 shown, the diversion structure 10 further includes: a seal 800 and / or an enlarged excavation roadway 900. The seal 800 is arranged on the wall surface of the water guide roadway 100, and the water blocking plate 310 abuts against the seal 800 when closing the water guide roadway 100. The enlarged excavation roadway 900 communicates with the water guide roadway 100 and is located on the side of the water guide groove 110.

[0048] In this embodiment, the seal 800 is arranged on the peripheral wall surface of the water guide roadway 100. The seal 800 can be a sealing rubber. The seal 800 surrounds the inner wall of the water guide roadway 100 and can cooperate with the water blocking plate 310 to prevent water from leaking through the gap at the connection between the water blocking plate 310 and the water guide roadway 100, preventing the external impact of water or water-sand mixture, improving the sealing performance of the water guide roadway 100 during drainage, and ensuring the water blocking effect of the water blocking assembly 300.

[0049] The side wall of the water guide roadway 100 is provided with an enlarged excavation roadway 900. The enlarged excavation roadway 900 is located on the side of the water guide groove 110. After the drainage water flows into the enlarged excavation roadway 900, the flow area increases and the flow rate decreases, achieving the effect of peak shaving and energy dissipation.

[0050] Exemplarily, the enlarged excavation roadway 900 can be arranged on both sides to enhance the effect of drainage energy dissipation. The enlarged excavation roadway 900 can also be arranged on the top wall, and the upper space obtained by the enlarged excavation is used for the emergency refuge of personnel.

[0051] In the second aspect of the embodiments of the present application, a design method for the diversion structure of coal mine underground reservoir drainage is provided. This design method is used to design the diversion structure provided in any of the above first aspect embodiments. This design method includes: Step 1: Conduct exploration and monitoring on the surface and underground of the underground reservoir, analyze the regional geology, hydrology and reservoir structure information, and determine the construction site of the water-conducting roadway for excavation expansion around the underground reservoir. Step 2: Monitor the water regime in the underground reservoir area, analyze the main outlets and paths of water discharge, and calculate the design information of the diversion structure. The design information includes: the specific shape and size of the diversion structure, the flow capacity of the cross-section, the cross-sectional size of the guide well, the water storage capacity of the discharge reservoir, etc.

[0052] Step 3: According to the overall calculation of the water-conducting system, expand the water-conducting roadway, guide well and discharge reservoir on the main path of water discharge, and install water-blocking components and trigger plates in the water-conducting groove of the water-conducting roadway. Among them, utilize the existing interlayer channels and goafs to arrange the guide well and discharge reservoir.

[0053] Step 4: Based on the exploration and monitoring data, establish the warning threshold for the emergency water discharge of the reservoir. When the data of the underground reservoir reaches the warning threshold, start the water discharge and diversion structure.

[0054] In this embodiment, the design of the diversion structure needs to combine the geological conditions, hydrological conditions, siltation location and degree of the underground reservoir, the reservoir structure form, the relatively weak parts of the reservoir, the reservoir capacity and the roof and floor, etc. Consider the reservoir capacity, water head height and danger level of the underground reservoir and other conditions comprehensively to determine the position of the diversion structure. The design of the diversion structure includes the calculation of planning the water discharge path, reserving the water storage space, arranging the drainage holes, quickly blocking the roadway, temporarily strengthening the structure, and emergency evacuation of personnel, etc., and calculate, compare and optimize the water discharge outlet area, the optimal water discharge path, the shape and size of the diversion structure, the flow capacity of the cross-section, etc.

[0055] The water regime monitoring indicators include: monitoring water level (water pressure), water inflow, water discharge, rainfall, water temperature, stress-strain, microseismic data, water chemical characteristic values.

[0056] Utilize the exploration and monitoring results to construct a three-dimensional similar simulation test bench for emergency water discharge, and simulate and analyze the safety and stability of the diversion system and the emergency water discharge capacity under the condition of emergency water discharge.

[0057] To establish the pre-judgment of water discharge response, it is necessary to conduct long-term monitoring on the water regime within the influence range of the coal mine underground reservoir, obtain the law of groundwater migration, predict the maximum water inflow capacity of the mine, obtain the key precursor information of emergency water discharge, and ensure the capacity and safety design of the water-conducting structure.

[0058] In terms of the monitoring and warning indicators of the water regime monitoring system, it is necessary to monitor indicators such as water level (water pressure), water inflow, water discharge, rainfall, water temperature, stress-strain, microseismic data, water chemical characteristic values, etc., determine the grading thresholds of each indicator, and construct an evaluation system for emergency water discharge indicators and a dynamic risk warning model.

[0059] In the present invention, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance; the term "plural" means two or more, unless otherwise clearly defined. Terms such as "installed", "connected", "joined", "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "joined" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0061] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0062] The above are only some embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A diversion structure for discharging water from underground reservoirs in coal mines, characterized in that: include: A water guide tunnel is used to connect to the underground reservoir, and a water guide trough is provided in the water guide tunnel; A trigger plate is located in the water guide groove, and a first end of the trigger plate is rotatably connected to the bottom wall of the water guide groove; A water blocking assembly connected to the second end of the trigger plate, wherein the water blocking assembly includes a water blocking plate; Among them, in the normal state, the water blocking plate is located in the water channel. In the water discharge state, when water falls into the water channel, it can drive the trigger plate to rotate and drive the water blocking plate to extend out of the water channel to close the water channel.

2. The diversion structure for discharging water from underground reservoirs in coal mines according to claim 1, characterized in that: The water blocking component also includes: A transmission plate, one end of which is rotatably connected to the trigger plate, the other end of which is connected to the bottom of the water blocking plate and slidably connected to the bottom wall of the water guide groove, and an angle is formed between the transmission plate and the water blocking plate.

3. The diversion structure for discharging water from underground reservoirs in coal mines according to claim 1, characterized in that: The bottom wall of the water guide groove is provided with a limiting portion, and the water blocking component further comprises: The support rod is located on the side of the water blocking plate away from the trigger plate. The top end of the support rod is rotatably connected to the water blocking plate and forms a gap with the bottom wall of the water guide groove. In the water discharge state, the bottom end of the support rod is clamped with the limiting part.

4. The diversion structure for discharging water from underground reservoirs in coal mines according to claim 1, characterized in that: A step and a baffle are provided on the side wall of the water guide groove on the water-facing side. The baffle is provided on the edge of the top surface of the step, and the baffle extends upward in a direction away from the top surface.

5. The diversion structure for discharging water from underground reservoirs in coal mines according to claim 1, characterized in that: Also includes: A cover plate is arranged on the water guide channel, the top surface of the cover plate is coplanar with the bottom surface of the water guide channel, and the cover plate is provided with a drainage hole.

6. The diversion structure for draining water from underground reservoirs in coal mines according to claim 5, characterized in that: Also includes: A transmission assembly is connected to the cover plate, and the transmission assembly is connected to the trigger plate or the water blocking plate. In a water-draining state, the trigger plate or the water blocking plate drives the cover plate to avoid the water blocking plate through the transmission assembly.

7. The diversion structure for discharging water from underground reservoirs in coal mines according to claim 6, characterized in that: There are multiple cover plates, and the transmission assembly includes: Two fixed pulleys are arranged opposite to each other on the side walls of the water channel; A flexible cable is wound around the two fixed pulleys, one end of the flexible cable is connected to the top of the water blocking plate, and the other end of the flexible cable is connected to at least one of the cover plates. When the water blocking plate extends out of the water guide groove, it drives the cover plate to move above the adjacent cover plate.

8. The diversion structure for discharging water from underground reservoirs in coal mines according to claim 2, characterized in that: Also includes: A water guide well is provided on the bottom surface of the water guide groove, and a water guide hole is provided on the trigger plate or the transmission plate. When the water blocking plate closes the lane, the water guide hole is connected with the water guide well; The drain reservoir is connected with the bottom of the water guide well.

9. The diversion structure for discharging water from underground reservoirs in coal mines according to claim 8, characterized in that: Also includes: A plurality of energy dissipation plates are arranged at intervals in the water guide well; and / or A plurality of room columns are arranged at intervals in the spillway.

10. The diversion structure for draining water from underground reservoirs in coal mines according to any one of claims 1 to 9, characterized in that: Also includes: A sealing member, arranged on the wall surface of the water-conducting tunnel, the water-blocking plate abutting against the sealing member when closing the water-conducting tunnel; and / or The expanded tunnel is communicated with the water guide tunnel and is located on the side of the water guide groove.

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