Underground filtering water sump
The underground filtration water tank addresses groundwater infiltration issues in coal mines by filtering large particles and maintaining water quality, enhancing safety and efficiency through a sedimentation and filtration system with angled channels and retaining walls.
Patent Information
- Application Number
- CN202420788435.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-16
- Publication Date
- 2024-12-10
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In underground coal mines, groundwater infiltration leads to water accumulation, pipe blockage, equipment damage, and water quality deterioration due to large particles, hindering mining operations and increasing labor intensity.
An underground filtration water tank with a sedimentation tank and filter wall system that filters large particles from groundwater, using angled channels to slow down water flow and precipitate sediments before discharge, equipped with retaining walls and anchor supports for stability.
Effectively filters large particles, prevents pipe blockage and equipment damage, maintains water quality, and enhances safety by diverting excess water, improving mining efficiency and worker safety.
Smart Images
Figure CN222131254U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of underground drainage, in particular to an underground filtering water tank. Background Art
[0002] Underground coal mines are usually located below the groundwater level. When mining operations are carried out, groundwater will infiltrate into the goaf through the roof of the coal mining face. The infiltration of groundwater may cause water accumulation in the mining face, which will hinder the normal mining of the face, reduce work efficiency, increase the labor intensity of miners, and may also have an adverse effect on the normal operation of equipment. In the process of discharging the infiltrated groundwater, large particles in the groundwater may block the pipe system of the drainage device. Especially during the flow of water, large particles may accumulate and precipitate in the pipe, causing pipe blockage, reducing water circulation efficiency or even completely blocking the water flow. At the same time, large particles may damage the drainage device, causing blockage or wear of the device, affecting the normal operation of the drainage device.
[0003] In addition, large particulate matter may also deteriorate water quality, which not only affects water use but may also have negative effects on production and the environment. Utility Model Content
[0004] In view of this, the purpose of the utility model is to provide an underground filtering water tank to solve the problems of underground water circulation treatment and underground safety protection at the underground working surface.
[0005] Based on the above purpose, the utility model provides an underground filtration water tank, comprising:
[0006] The main body of the water tank is embedded in the side wall of the underground working surface;
[0007] The water tank body includes a water inlet, a sedimentation tank, a filter wall and a water outlet;
[0008] The water inlet of the water inlet is connected to the first drainage pipe in the well, and the water outlet of the water inlet is connected to the first end of the sedimentation tank;
[0009] The second end of the sedimentation tank is connected to the water outlet, and the filter wall is arranged at the second end of the sedimentation tank to filter large particles in the underground water;
[0010] The outlet is provided with a drain outlet at one end away from the sedimentation tank, and the water inlet and the drain outlet are provided at the same time.
[0011] There are retaining walls at the mouths to prevent the underground water in the sedimentation tank from flowing out.
[0012] Optionally, a downward slope is provided from the water inlet of the water inlet channel to the second end of the sedimentation tank.
[0013] Optionally, an extension direction of the water inlet channel and an extension direction of the sedimentation tank have a first angle; the first angle is not greater than 90°.
[0014] Optionally, an extension direction of the sedimentation tank and an extension direction of the outlet channel have a second angle; the second angle is configured to be between 45° and 135°.
[0015] Optionally, the top of the retaining wall is higher than the top of the filter wall.
[0016] Optionally, the height of the retaining wall is not less than 1 m, and the height of the filter wall is not less than 1.5 m.
[0017] Optionally, the width of the water inlet and the sedimentation tank is not less than 4 m, and the width of the sedimentation tank is greater than or equal to the width of the water inlet.
[0018] Optionally, the tops and side walls of the water inlet, the sedimentation tank and the water outlet are all provided with anchor net spraying supports.
[0019] Optionally, the connection between the water outlet of the water inlet and the first end of the sedimentation tank is set to a first arc shape;
[0020] And the connection point where the second end of the sedimentation tank is connected to the outlet is set to be a second arc shape.
[0021] Optionally, the drain outlet is provided with a water pump and a second drain pipe, which are used to discharge the filtered underground water.
[0022] From the above description, it can be seen that the downhole filtration water tank provided by the utility model first transports the downhole water to the water inlet before discharging the downhole water accordingly. The downhole water flows through the sedimentation tank. After being blocked by the filter wall, the flow rate of the downhole water slows down, and the large particles carried by it are precipitated in the sedimentation tank. The downhole water after filtration is discharged through the drainage port where the water flows out, which discharges the downhole water in the working face. At the same time, during the discharge process of the filtered downhole water, the large particles carried by it are reduced, which avoids taking advantage of the opportunity in the drainage pipe to cause damage to the drainage equipment or reduce the drainage efficiency.
[0023] In addition, the underground water filtration tank of the present application can simultaneously serve the working face where it is located and the adjacent working face for underground water filtration. In response to the situation where the underground water gushing volume increases due to sudden conditions on the underground working face, the underground water filtration tank of the present application can be used to divert the increased gushing volume, so that the gushing volume flows into the underground annular water tank, thereby avoiding the increased gushing volume from causing harm to the workers on the working face and improving the underground disaster resistance. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0025] Figure 1 A top view of an underground filtration water tank according to an embodiment of the utility model;
[0026] Figure 2 This is a cross-sectional view of an underground filtration water tank according to an embodiment of the utility model.
[0027] Explanation of the symbols in the figure: water tank body 1, water inlet 11, sedimentation tank 12, filter wall 13, water outlet 14, water inlet 21, drain outlet 22, retaining wall 23, first arc 31, second arc 32. DETAILED DESCRIPTION
[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0029] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the utility model should be the common meanings understood by people with ordinary skills in the field to which the disclosure belongs. The "first", "second" and similar words used in the present disclosure do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0030] The utility model aims to provide an underground filtering water tank which is suitable for underground goaf areas, is easy to use, simple to operate, can realize the circulation output of underground water, and can also realize the underground safety protection.
[0031] refer to Figure 1 and Figure 2 As shown, the underground filtration water tank of the present application includes:
[0032] The water tank body 1 is embedded in the side wall of the underground working surface.
[0033] In some embodiments, during the process of underground mineral mining, it is necessary to carry out corresponding excavation along the working tunnel. For the water tank body 1, corresponding surveys can be carried out on the side walls of the working surface, and excavation can be carried out without the possibility of sudden water penetration, thereby forming the water tank body 1.
[0034] In the process of excavating the working face to form the water tank body 1, excavation is performed along the bottom of the working face.
[0035] The water tank body 1 includes an inlet 11, a sedimentation tank 12, a filter wall 13 and an outlet 14; the water inlet 21 of the inlet 11 is connected to the first drainage pipe in the well, and the water outlet of the inlet 11 is connected to the first end of the sedimentation tank 12. The second end of the sedimentation tank 12 is connected to the outlet 14, and the filter wall 13 is arranged at the second end of the sedimentation tank 12, which is used to filter large particles in the water in the well; the outlet 14 is provided with a drain 22 at one end away from the sedimentation tank 12, and the water inlet 21 and the drain 22 are both provided with a retaining wall 23, which is used to prevent the water in the well from flowing out of the sedimentation tank 12.
[0036] In some embodiments, during the side wall excavation of the underground working face, the water inlet 11 extends toward one side of the working face, the extension direction of the sedimentation tank 12 can be parallel to the extension direction of the working face, and the water outlet 14 extends from the sedimentation tank 12 to the outside of the working face, thereby forming an overall annular water tank body 1.
[0037] In some embodiments, the first drain pipe can be a pipe for collecting underground water, wherein the first drain pipe only collects underground water that will infiltrate into the goaf, and its layout distance is short, and there is basically no or very little large particles of matter that will precipitate and gather in the first drain pipe, and the collected underground water is injected from the water inlet 21 of the water inlet 11, flows through the sedimentation tank 12, and is filtered through the filter wall 13, so that the large particles of matter in the underground water are precipitated into the sedimentation tank 12, and the filtered underground water flows from the sedimentation tank 12 into the water outlet 14 and is discharged through the drain 22. Among them, the underground water injected into the water inlet 11 passes through the retaining wall 23, thereby avoiding the backflow of the underground water, or directly flows out after being filtered.
[0038] In some embodiments, both the filter wall 13 and the retaining wall 23 may be 50-brick walls.
[0039] In some embodiments, reference Figure 1 and Figure 2As shown, a downward tilt angle is provided from the water inlet 21 of the water inlet 11 to the second end of the sedimentation tank 12. Through the design of the tilt angle, the underground water injected through the water inlet 21 of the water inlet 11 flows into the sedimentation tank 12. In addition, when the sediment in the sedimentation tank 12 reaches a certain amount, the underground water entering the water inlet 11 through the first drainage pipe is closed, and the retaining wall 23 of the water inlet 21 is removed at the same time. The sewage cleaning equipment uses the tilted setting of the water inlet 11 and the sedimentation tank 12 to enter the sedimentation tank 12 to remove the sediment. After the removal is completed, the retaining wall 23 of the water inlet 21 is reset.
[0040] In some embodiments, the downward tilt angle may be 8°.
[0041] In some embodiments, the extension direction of the water inlet 11 and the extension direction of the sedimentation tank 12 have a first angle, and the first angle is not greater than 90°. In the process of the underground water flowing from the water inlet 11 to the sedimentation tank 12, its flow rate will become faster and faster. By setting the water inlet 11 and the sedimentation tank 12 at the first angle, the underground water flows to the angle and is blocked by the side wall of the sedimentation tank 12, so that the flow rate of the underground water is correspondingly slowed down, so as to avoid the underground water flowing too fast, and the large particles carried cannot be effectively precipitated in the sedimentation tank 12.
[0042] In the examples of this application, refer to Figure 1 As shown, the first angle is set at 90°. It can also be set to other angles, which are not specifically limited here, as long as it can have a corresponding limiting effect on the flow rate of the underground water.
[0043] In some embodiments, the extension direction of the sedimentation tank 12 and the extension direction of the outlet 14 have a second angle, and the second angle is configured to be between 45° and 135°. The flow rate of the downhole water is slowed down for the first time through the first angle between the sedimentation tank 12 and the water inlet 11, and the downhole water flows to the second angle between the extension direction of the sedimentation tank 12 and the extension direction of the outlet 14, and is blocked by the side wall of the outlet 14, and the flow rate of the downhole water is slowed down for the second time, wherein the second slowing down of the downhole water flow rate occurs before the filter wall 13, and the downhole water with a slower flow rate is more convenient for effective sedimentation in the sedimentation tank 12 before the filter wall 13, so that the downhole water entering the outlet 14 carries less large particles.
[0044] In the examples of this application, refer to Figure 1 As shown, the second angle is set at 90°, and can also be set to other angles between 45° and 135°. No specific limitation is made here, as long as it can achieve the effect of slowing down the flow rate of underground water for the second time.
[0045] In some embodiments, the top of the retaining wall 23 is higher than the top of the filter wall 13. It is understandable that the underground water flowing into the water inlet 11 through the water inlet 21 does not flow into the water inlet 11 all at once, but flows in gradually through the first drainage pipe. After the underground water flows into the sedimentation tank 12, it is blocked by the filter wall 13 and precipitates in the sedimentation tank 12. After the water volume in the sedimentation tank 12 accumulates to a certain amount, it may face backflow, that is, the water in the sedimentation tank 12 flows back to the water inlet 11 or the water flow in the water inlet 11 cannot flow into the sedimentation tank 12. In order to prevent the underground water in the water inlet 11 from flowing out through the water inlet 21, the retaining wall 23 is used. Blocking is performed. When the underground water in the sedimentation tank 12 reaches a certain amount after sedimentation, new underground water flows in, and the filtered underground water flows into the outlet 14 from the top of the filter wall 13. When the filtered underground water flows through the top of the filter wall 13, since the top of the retaining wall 23 is higher than the top of the filter wall 13, both the unfiltered underground water in the water inlet 11 and the filtered underground water in the water outlet 14 will be blocked by the retaining wall 23 and cannot overflow from the water inlet 21 and the water outlet, thereby preventing the underground water from flooding the channel corresponding to the underground working surface.
[0046] It should be noted that a corresponding water level line can be set on the retaining wall 23 of the water inlet 21. When the underground water in the water inlet 11 is higher than the water level line, the discharge of the underground water from the water outlet 14 can be accelerated.
[0047] In some embodiments, the height of the retaining wall 23 is not less than 1m, and the height of the filter wall 13 is not less than 1.5m. Although the height of the retaining wall 23 is lower than that of the filter wall 13, since a downward slope is provided from the water inlet 21 of the water inlet 11 to the second end of the sedimentation tank 12, the plane where the top of the retaining wall 23 is located is still higher than the plane where the top of the filter wall 13 is located.
[0048] In some embodiments, the widths of the water inlet 11 and the sedimentation tank 12 are not less than 4 m, and the width of the sedimentation tank 12 is greater than or equal to the width of the water inlet 11 .
[0049] In order to facilitate filtering as much underground water as possible, the larger the width of the sedimentation tank 12, the larger the volume of the sedimentation tank 12. Similarly, after a certain amount of sedimentation, the sedimentation tank 12 will precipitate a sufficient amount of large particles of sediment, which needs to be cleaned up. The water inlet 11 is wide enough to facilitate the sewage cleaning vehicle to enter the sedimentation tank 12 from the water inlet 11. The width of the sedimentation tank 12 can be greater than or equal to the width of the water inlet 11, so that the sedimentation tank 12 can accommodate enough underground water for filtering.
[0050] In some embodiments, the sedimentation tank 12 may be 4 m wide and 50 m long.
[0051] In some embodiments, the top and side walls of the water inlet 11, the sedimentation tank 12 and the water outlet 14 are all provided with anchor net spraying support (not shown in the figure). In order to ensure the firmness of the underground filtration water tank in the embodiment of the present application, and to avoid the possibility of rock or coal seam falling or even collapse on the top or side wall of any of the water inlet 11, the sedimentation tank 12 and the water outlet 14, anchor rods and sprayed concrete panels are used to form support, limit the free development of deformation of the surrounding rock or coal seam on the side walls and top of the water inlet 11, the sedimentation tank 12 and the water outlet 14, adjust the stress distribution of the surrounding rock or coal seam, and prevent the rock mass or each layer from loosening and falling.
[0052] Optionally, for the side walls of the water inlet 11, sedimentation tank 12 and outlet 14, the anchor rods are 22×2400mm left-handed non-longitudinal steel threaded anchor rods, with 150×10mm iron trays, each anchor rod contains a MSCK2380 resin anchor, and the spacing between anchor rods is 1000×1000mm. The anchor rod torque is not less than 150N·m, and the anchoring force is not less than 100KN. For the top of the water inlet 11, sedimentation tank 12 and outlet 14, the anchor cable uses a steel strand with a specification of 17.7×6500mm, the spacing between anchor cables is 2000mm×3000mm, the preload force of each anchor cable is not less than 150KN, and the anchoring force is not less than 240KN. The anchor cable tray specification is a steel plate of 250mm×250mm×20mm. The strength of the shotcrete is C20 and the thickness is 150mm.
[0053] In some embodiments, the bottoms of the water inlet 11, the sedimentation tank 12 and the water outlet 14 are all paved with concrete, and an impermeable agent is provided on the surface of the concrete to prevent underground water from entering the water inlet 11, the sedimentation tank 12 and the water outlet 14 from leaking.
[0054] In some embodiments, the connection between the outlet of the water inlet 11 and the first end of the sedimentation tank 12 is set to a first arc 31, and the connection between the second end of the sedimentation tank 12 and the outlet 14 is set to a second arc 32.
[0055] Through the above embodiment, the extension direction of the water inlet 11 and the extension direction of the sedimentation tank 12 have a first angle, and the flow rate of the downhole water entering the sedimentation tank 12 from the water inlet 11 is slowed down for the first time through the side wall of the sedimentation tank 12. The side wall of the sedimentation tank 12 directly collides with the inflowing downhole water. Although the flow rate of the downhole water is correspondingly slowed down, the collision causes the large particles carried in the downhole water to move faster in the downhole water, which is not conducive to sedimentation. The downhole water flowing from the water inlet 11 into the sedimentation tank 12 is buffered by the first arc 31 to avoid direct collision with the side wall of the sedimentation tank 12, so that the movement speed of the large particles carried in the downhole water in the downhole water is relatively slowed down, which is conducive to sedimentation in the sedimentation tank 12. Similarly, the extension direction of the sedimentation tank 12 and the extension direction of the outlet 14 have a second angle, and the flow rate of the downhole water in the sedimentation tank 12 is slowed down for the second time through the side wall of the outlet 14. However, the side wall of the outlet 14 directly collides with the downhole water, causing the large particles carried to move faster in the downhole water, which is not conducive to sedimentation. The design of the second arc 32 is conducive to avoiding direct collision and further slowing down the movement speed of large particles in the downhole water, which is conducive to sedimentation in the sedimentation tank 12, thereby completing the filtration of the downhole water.
[0056] In some embodiments, the drain port 22 is provided with a water pump and a second drain pipe (not shown in the figure) for draining the filtered underground water. The filtered underground water is discharged through the water pump and the second drain pipe, which avoids the damage of large particles to the water pump and the deposition in the second drain pipe, and not only discharges the accumulated water that penetrates into the working surface, improves the disaster resistance of the underground well, but also plays a role in protecting the drainage device and pipeline.
[0057] During the process of excavating underground, usually not only one working tunnel is excavated, but usually two working tunnels are excavated at the same time. Generally speaking, the two working tunnels are parallel, and there are two working surfaces corresponding to the two working tunnels. The underground water that seeps into the two working surfaces needs to be discharged, and the underground filter water tank of the embodiment of the present application does not need to be set in both working surfaces, but only needs to be set in one of the working surfaces. One underground filter water tank can serve two working surfaces at the same time, that is, the underground water that seeps into the two working surfaces can be discharged into the underground filter water tank through the first drainage pipe.
[0058] The working principle of the underground filtration water tank in the embodiment of the present application is as follows: the underground water that has infiltrated into the underground working surface is collected through the first drainage pipe and injected from the water inlet of the water inlet, and the underground water flows into the sedimentation tank through the water inlet. During this process, the side wall of the sedimentation tank and the first curvature slow down the flow rate of the underground water flowing into the sedimentation tank from the water inlet, while avoiding direct impact on the side wall of the sedimentation tank, slowing down the movement speed of large particles in the underground water, and then the underground water flows from the first end of the sedimentation tank to the second end. During this process, the side wall of the outlet channel and the second curvature slow down the flow rate of the underground water again, while avoiding direct impact on the side wall of the outlet channel, slowing down the movement speed of large particles in the underground water again, the filter wall blocks the underground water, and the underground water after blocking begins to precipitate, and the large particles precipitate into the sedimentation tank, and the underground water that has been precipitated (filtered) flows over the filter wall into the outlet, and the filtered underground water is discharged using the water pump and the second drainage pipe at the drain outlet.
[0059] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.
[0060] The embodiments of the present invention are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. An underground filtration water tank, characterized in that: include: The main body of the water tank is embedded in the side wall of the underground working surface; The water tank body includes a water inlet, a sedimentation tank, a filter wall and a water outlet; The water inlet of the water inlet is connected to the first drainage pipe in the well, and the water outlet of the water inlet is connected to the first end of the sedimentation tank; The second end of the sedimentation tank is connected to the water outlet, and the filter wall is arranged at the second end of the sedimentation tank to filter large particles in the underground water; A drain outlet is provided at one end of the water outlet away from the sedimentation tank, and retaining walls are provided at both the water inlet and the drain outlet to prevent underground water in the sedimentation tank from flowing out.
2. The underground filtration water tank according to claim 1, characterized in that: A downward slope is provided from the water inlet of the water inlet channel to the second end of the sedimentation tank.
3. The underground filtration water tank according to claim 2, characterized in that: An extension direction of the water inlet and an extension direction of the sedimentation tank have a first angle; the first angle is not greater than 90°.
4. The underground filtration water tank according to claim 2, characterized in that: An extension direction of the sedimentation tank and an extension direction of the water outlet have a second angle; the second angle is configured to be between 45° and 135°.
5. The underground filtration water tank according to claim 2, characterized in that: The top of the retaining wall is higher than the top of the filtering wall.
6. The underground filtration water tank according to claim 5, characterized in that: The height of the retaining wall is not less than 1m, and the height of the filter wall is not less than 1.5m.
7. The underground filtration water tank according to claim 1, characterized in that: The widths of the water inlet and the sedimentation tank are not less than 4m, and the width of the sedimentation tank is greater than or equal to the width of the water inlet.
8. The underground filtration water tank according to claim 1, characterized in that: The tops and side walls of the water inlet, the sedimentation tank and the water outlet are all provided with anchor net spraying support.
9. The underground filtration water tank according to claim 1, characterized in that: The connection between the water outlet of the water inlet and the first end of the sedimentation tank is set to a first arc shape; And the connection point where the second end of the sedimentation tank is connected to the outlet is set to be a second arc shape.
10. The underground filtration water tank according to claim 1, characterized in that: The drain outlet is provided with a water pump and a second drain pipe, which are used to discharge the filtered underground water.