Underground reservoir supporting device

Abstract

The invention provides an underground reservoir supporting device which comprises two coal pillar dam bodies located on the two sides of a roadway correspondingly, fixing grooves are formed in the two coal pillar dam bodies correspondingly, the two fixing grooves are oppositely formed, the extending direction of the roadway is the first direction, and the coal pillar dam bodies extend in the first direction; the artificial dam body is arranged between the two coal pillar dam bodies, the artificial dam body is used for separating a roadway and an underground reservoir, the artificial dam body comprises a web plate and two wing plates, the two wing plates are located at the two ends of the web plate respectively, the two wing plates and the two fixing grooves are arranged in a one-to-one correspondence mode, the wing plates are fixed in the corresponding fixing grooves, and connecting parts are arranged between the wing plates and the web plate; the size of the wing plate in the first direction is larger than that of the web in the first direction, the size of the connecting part in the first direction is gradually increased in the direction away from the web, and the coal pillar dam body and the artificial dam body are matched to support the underground reservoir. Through the technical scheme provided by the invention, the problem that an artificial dam body in the prior art is extremely easy to damage can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of underground reservoir support devices, and in particular to an underground reservoir support device. Background Art

[0002] In order to balance the contradiction between water resource protection and coal resource development, the proposal of underground reservoirs in coal mines can effectively alleviate the conflict between the two. The goaf after coal seam mining is used as water storage space, and the protective coal pillar and artificially built dam body are used as the underground reservoir dam body. The construction of the reservoir can make mine water recycled and alleviate the dilemma of water shortage.

[0003] Currently, if Figure 1 As shown, the artificial dam body and the coal pillar dam body in the underground water reservoir of the coal mine are mostly connected by grooves, that is, a rectangular groove is dug in the coal pillar dam body, and the artificial dam body is embedded inside, that is, concrete is poured inside the groove to form a fixed structure 2, and the connecting structure 1 between the two fixed structures 2 is in the shape of a thin plate "I" and is inserted into the coal pillar dam body, so that the artificial dam body and the coal pillar dam body as a whole show an "H" shape distribution on the plane.

[0004] However, under the action of hydrostatic pressure and water erosion, the artificial dam body is very prone to fatigue damage, which can lead to dislocation, instability and water seepage of the artificial dam body, thus affecting the water retaining effect of the artificial dam body. Summary of the invention

[0005] The invention provides an underground reservoir supporting device to solve the problem that the artificial dam body in the prior art is very easy to be damaged.

[0006] The present invention provides an underground water reservoir supporting device, which comprises: two coal pillar dam bodies, which are respectively located at two sides of a tunnel, the two coal pillar dam bodies are both provided with fixing grooves, the two fixing grooves are arranged opposite to each other, the extension direction of the tunnel is a first direction, and the coal pillar dam bodies extend along the first direction; an artificial dam body, which is arranged between the two coal pillar dam bodies, and the artificial dam body is used to separate the tunnel and the underground water reservoir, the artificial dam body comprises a web and two wing plates, the two wing plates are respectively located at two ends of the web, the two wing plates are arranged in one-to-one correspondence with the two fixing grooves, the wing plates are fixed in the corresponding fixing grooves, and a connecting portion is provided between the wing plates and the web plates, the size of the wing plates along the first direction is greater than the size of the web plates along the first direction, the size of the connecting portion along the first direction gradually increases in the direction away from the web plates, and the coal pillar dam bodies and the artificial dam bodies cooperate to support the underground water reservoir.

[0007] Furthermore, the connecting portion has an arc-shaped structure.

[0008] Further, the dimension of the connecting portion along the first direction is set between 0.5m and 1.0m.

[0009] Furthermore, a first reinforcement structure is arranged on a side of the web close to the underground reservoir, and the first reinforcement structure is arranged to protrude from an end surface of the web.

[0010] Furthermore, a spoiler is provided at an end of the first reinforcement structure away from the web, and a cross-sectional area of ​​the spoiler gradually decreases in a direction away from the web.

[0011] Furthermore, a second reinforcement structure is arranged on one side of the web close to the tunnel, and the second reinforcement structure is arranged protruding from the end surface of the web.

[0012] Furthermore, the top plate of the tunnel is provided with a first groove, the bottom plate of the tunnel is provided with a second groove, the top of the artificial dam body is fixed in the first groove, and the bottom of the artificial dam body is fixed in the second groove.

[0013] Furthermore, the size of the artificial dam body in the first slot is set between 50 cm and 100 cm, and the size of the artificial dam body in the second slot is set between 50 cm and 100 cm.

[0014] Furthermore, the underground reservoir supporting device also includes a plurality of first anchor rods, which are arranged between the artificial dam body and the coal pillar dam body, and are arranged at intervals along the height direction of the artificial dam body.

[0015] Furthermore, the underground reservoir supporting device also includes: a plurality of second anchor rods, the plurality of second anchor rods are arranged between the artificial dam body and the tunnel top plate, and some of the second anchor rods are arranged obliquely; a plurality of third anchor rods, the plurality of third anchor rods are arranged between the artificial dam body and the tunnel bottom plate, and some of the third anchor rods are arranged obliquely.

[0016] By applying the technical solution of the present invention, a fixing groove is provided on the coal pillar dam body, a wing plate is located in the fixing groove, a web is located between the two wing plates, and a connecting portion is provided between the wing plate and the web, and the size of the connecting portion along the first direction gradually increases in the direction away from the web. In this way, the connecting portion increases the contact area at the junction of the coal mine dam body and the artificial dam body, can effectively disperse stress, avoid stress concentration, reduce the risk of excessive local pressure, thereby improving the structural stability of the artificial dam body, avoiding damage to the artificial dam body, and further avoiding dislocation, instability and water seepage of the artificial dam body, thereby ensuring the water retaining effect of the artificial dam body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of an underground reservoir support device in the prior art is shown;

[0019] Figure 2 A schematic structural diagram of an underground reservoir support device provided according to an embodiment of the present invention is shown.

[0020] The above drawings include the following reference numerals:

[0021] 10. Coal pillar dam;

[0022] 11. Fixed slot;

[0023] 20. Artificial dam;

[0024] 21. Belly plate;

[0025] 22. Wing plate;

[0026] 23. Connecting part;

[0027] 24. The first reinforcement structure;

[0028] 241, spoiler;

[0029] 25. Second reinforcement structure;

[0030] 30. The first anchor rod;

[0031] 100, laneway; 200, underground reservoir;

[0032] 1. Connecting structure; 2. Fixing structure. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figure 2As shown, the present application provides an underground water reservoir support device, which includes two coal pillar dam bodies 10 and an artificial dam body 20. The two coal pillar dam bodies 10 are respectively located on both sides of a tunnel 100, and the two coal pillar dam bodies 10 are both provided with fixing grooves 11, and the two fixing grooves 11 are arranged oppositely, and the extension direction of the tunnel 100 is a first direction, and the coal pillar dam bodies 10 extend along the first direction. The artificial dam body 20 is arranged between the two coal pillar dam bodies 10. The artificial dam body 20 is used to separate the tunnel 100 and the underground reservoir 200. The artificial dam body 20 includes a web 21 and two wing plates 22. The two wing plates 22 are respectively located at the two ends of the web 21. The two wing plates 22 are arranged in a one-to-one correspondence with the two fixing grooves 11. The wing plates 22 are fixed in the corresponding fixing grooves 11, and there is a connecting portion 23 between the wing plates 22 and the web 21. The size of the wing plates 22 along the first direction is greater than the size of the web 21 along the first direction. The size of the connecting portion 23 along the first direction gradually increases in the direction away from the web 21. The coal pillar dam body 10 and the artificial dam body 20 cooperate to support the underground reservoir 200.

[0035] By applying the technical solution of the present application, a fixing groove 11 is provided on the coal pillar dam body 10, a wing plate 22 is located in the fixing groove 11, a web 21 is located between the two wing plates 22, and a connecting portion 23 is provided between the wing plate 22 and the web 21, and the dimension of the connecting portion 23 along the first direction gradually increases in the direction away from the web 21. With such a configuration, the connecting portion 23 increases the contact area at the junction of the coal mine dam body and the artificial dam body 20, can effectively disperse stress, avoid stress concentration, reduce the risk of excessive local pressure, thereby improving the structural stability of the artificial dam body 20, avoiding damage to the artificial dam body 20, and further avoiding dislocation, instability and water seepage of the artificial dam body 20, thereby ensuring the water retaining effect of the artificial dam body 20.

[0036] Mine water is not static. The water level in the underground reservoir 200 changes dynamically according to production needs. Therefore, during this process, the water surface will erode the artificial dam body 20 and damage the structure of the artificial dam body 20. However, in the present application, a connecting portion 23 is provided between the wing plate 22 and the web 21 to effectively improve the structural strength of the artificial dam body 20 and avoid damage to the artificial dam body 20.

[0037] A waterproof layer is provided on one side of the artificial dam body 20 close to the underground reservoir 200 to prevent water leakage from the underground reservoir 200 .

[0038] Optionally, the waterproof layer is a bituminous coating.

[0039] Specifically, in this embodiment, the width of the web 21 is 0.5 m, the width of the wing plate 22 is 2.5 m, and the depth of the fixing groove 11 is 1.5 m.

[0040] Furthermore, the connecting portion 23 has an arc-shaped structure.

[0041] In this way, the arc structure can better disperse stress and avoid stress concentration, thereby improving the bearing capacity of the connection part 23 and the overall stability of the artificial dam body 20. When subjected to stress, the arc structure can evenly distribute the force along its curved surface, reducing the damage of the connection part 23 caused by excessive local stress.

[0042] The dimension of the connecting portion 23 along the first direction is set between 0.5 m and 1.0 m.

[0043] When the dimension of the connecting portion 23 along the first direction is less than 0.5m, the dimension of the connecting portion 23 along the first direction is too small, which will reduce the structural strength of the connecting portion 23 and cause the connecting portion 23 to be easily damaged; when the dimension of the connecting portion 23 along the first direction is greater than 1.0m, this will increase the processing cost of the connecting portion 23; therefore, the dimension of the connecting portion 23 along the first direction is set between 0.5m and 1.0m, which can improve the structural stability and shear strength of the artificial dam body 20 and reduce the processing cost.

[0044] Specifically, a first reinforcement structure 24 is provided on one side of the web 21 close to the underground reservoir 200, and the first reinforcement structure 24 protrudes from the end surface of the web 21. In this way, the first reinforcement structure 24 can further improve the structural strength of the artificial dam body 20 and prevent the artificial dam body 20 from being damaged.

[0045] Specifically, the first reinforcement structure 24 is arranged in the middle part of the web 21. With this arrangement, the first processing structure can change the stress condition of the artificial dam body 20, improve the pressure-bearing capacity of the artificial dam body 20 on the top and bottom plates, and change the hydrostatic pressure distribution and bending moment size of the underground reservoir 200 on the dam body.

[0046] Furthermore, a spoiler 241 is provided at the end of the first reinforcement structure 24 away from the web 21, and the cross-sectional area of ​​the spoiler 241 gradually decreases in the direction away from the web 21. In this way, the spoiler 241 can divert the mine water, change its flow direction, and cause disturbance between it and the surrounding normally flowing mine water, thereby preventing the water flow from directly eroding the artificial dam body 20, and further alleviating the erosion effect caused by the water flow directly rushing to the dam body.

[0047] The second reinforcement structure 25 is disposed on one side of the web 21 close to the tunnel 100, and the second reinforcement structure 25 protrudes from the end surface of the web 21. In this way, the first reinforcement structure 24 can further improve the structural strength of the artificial dam body 20 and prevent the artificial dam body 20 from being damaged.

[0048] Specifically, the first reinforcement structure 24 is disposed in the middle portion of the web 21 .

[0049] Furthermore, the top plate of the tunnel 100 is provided with a first groove, the bottom plate of the tunnel 100 is provided with a second groove, the top of the artificial dam body 20 is fixed in the first groove, and the bottom of the artificial dam body 20 is fixed in the second groove.

[0050] By setting up in this way, the contact area between the artificial dam body 20 and the surrounding rock can be significantly increased by embedding the top and bottom of the artificial dam body 20 into the first slot and the second slot, thereby improving the lateral stability of the artificial dam body 20. This design enables the artificial dam body 20 to better resist these mechanical effects when the top and bottom plates settle or move, and reduce the displacement or damage caused by geological changes. At the same time, such a setting can improve the structural stability of the artificial dam body 20 and prevent the artificial dam body 20 from collapsing.

[0051] The size of the artificial dam body 20 in the first slot is set between 50 cm and 100 cm, and the size of the artificial dam body 20 in the second slot is set between 50 cm and 100 cm.

[0052] With such arrangement, when the dimension of the artificial dam body 20 located in the first groove is less than 50 cm, the connection strength between the artificial dam body 20 and the top plate cannot be guaranteed, and the artificial dam body 20 is damaged; when the dimension of the artificial dam body 20 located in the first groove is greater than 100 cm, the processing costs of the artificial dam body 20 and the first groove increase; therefore, the dimension of the artificial dam body 20 located in the first groove is set between 50 cm and 100 cm, which can not only ensure the connection strength between the artificial dam body 20 and the top plate, but also reduce the processing costs of the artificial dam body 20 and the first groove.

[0053] Optionally, the size of the artificial dam body 20 in the first slot can be set to 50 cm, 75 cm or 100 cm. In the present application, the size of the artificial dam body 20 in the first slot is set to 75 cm.

[0054] When the dimension of the artificial dam body 20 located in the second groove is less than 50 cm, the connection strength between the artificial dam body 20 and the base plate cannot be guaranteed, and the artificial dam body 20 is damaged; when the dimension of the artificial dam body 20 located in the second groove is greater than 100 cm, the processing cost of the artificial dam body 20 and the second groove increases; therefore, the dimension of the artificial dam body 20 located in the second groove is set between 50 cm and 100 cm, which can not only ensure the connection strength between the artificial dam body 20 and the base plate, but also reduce the processing cost of the artificial dam body 20 and the second groove.

[0055] Optionally, the size of the artificial dam body 20 in the second slot can be set to 50 cm, 75 cm or 100 cm. In the present application, the size of the artificial dam body 20 in the second slot is set to 75 cm.

[0056] By embedding the artificial dam body 20 into the coal pillar dam body 10 on both sides and the top and bottom plate surrounding rock depth, the safety and stability of the coal mine artificial dam body 20 can be further improved. The artificial dam body 20 is made of concrete, which has good anti-seepage performance. In addition, the deep surrounding rock has low permeability, which can more effectively reduce the leakage of the water source of the coal mine underground reservoir 200.

[0057] Furthermore, the underground reservoir support device further includes a plurality of first anchor rods 30, which are arranged between the artificial dam body 20 and the coal pillar dam body 10, and the plurality of first anchor rods 30 are arranged at intervals along the height direction of the artificial dam body 20. Such an arrangement can improve the structural strength between the artificial dam body 20, the coal pillar dam body 10 and the surrounding rock, avoid cracks between the artificial dam body 20, the coal pillar dam body 10 and the surrounding rock, and thus avoid leakage of mine water.

[0058] Specifically, in the actual construction process, multiple groups of first anchor rods 30 are inserted into the connection part 23 along the height direction of the artificial dam body 20. Each group of first anchor rods 30 has 3 to 5 anchor rods, which are arranged perpendicular to the coal pillar dam body 10. The first anchor rods 30 are directly inserted into the stable rock formation. The length of the first anchor rods 30 is 2.0m. In this way, a stable and dense artificial dam body 20 is formed after grouting, forming left and right flank anti-seepage zones.

[0059] Among them, the underground reservoir support device also includes a plurality of second anchor rods and a plurality of third anchor rods. The plurality of second anchor rods are arranged between the artificial dam body 20 and the top plate of the tunnel 100, and some of the second anchor rods are arranged obliquely. The plurality of third anchor rods are arranged between the artificial dam body 20 and the bottom plate of the tunnel 100, and some of the third anchor rods are arranged obliquely. Such an arrangement can further improve the structural strength between the artificial dam body 20, the coal pillar dam body 10 and the surrounding rock, avoid cracks between the artificial dam body 20, the coal pillar dam body 10 and the surrounding rock, and thus avoid leakage of mine water.

[0060] Specifically, a second anchor is used to pass through the loose layer of the surrounding rock and is inserted into the stable rock mass. Five groups of second anchors are provided in the length direction of the artificial dam body 20. The length of the second anchor is 2.0 m. Each group of second anchors has three anchors, one of which is perpendicular to the web 21, and the other two are symmetrically arranged at an angle of 45° to the horizontal direction of the web 21, so that a stable and dense artificial dam body 20 is formed after grouting; a third anchor is used to pass through the loose layer of the surrounding rock and is inserted into the stable rock mass. Five groups of third anchors are provided in the length direction of the artificial dam body 20. The length of the third anchor is 2.0 m. Each group of third anchors has three anchors, one of which is perpendicular to the web 21, and the other two are symmetrically arranged at an angle of 45° to the horizontal direction of the web 21, so that a stable and dense artificial dam body 20 is formed after grouting; such an arrangement can form top and bottom plate seepage-proof areas to prevent water leakage.

[0061] Furthermore, anchor rods are arranged between the artificial dam body 20 and the coal pillar dam body 10 and the top and bottom plate surrounding rocks, which will form a seepage-proof area. However, the width of the web 21 and the connecting part 23 is small, and the web 21 and the connecting part 23 alone may not be able to fully prevent water leakage. Adding two anchor rods symmetrically arranged at an inclination angle will increase the anchor rod action area, thereby increasing the seepage-proof area of ​​the top and bottom plates and preventing water leakage. A waterproof layer is arranged on the inner side of the artificial dam body 20 close to the underground reservoir 200 to prevent water penetration. The above-mentioned anchor rod arrangement between the artificial dam body 20 and the coal pillar dam body 10 and the top and bottom plate surrounding rocks, as well as the depth of the artificial dam body 20 embedded in the surrounding rocks plus the waterproof layer on the surface, can form a water-blocking and seepage-proof barrier for the underground reservoir 200 in an all-round and three-dimensional manner to prevent leakage of water from the underground reservoir 200.

[0062] Among them, the width of the web 21 and the wing plate 22, and the size of the connecting part 23 along the first direction are not limited to the sizes in the present embodiment; the depth of the artificial dam body 20 embedded in the coal pillar dam bodies 10 on the left and right sides and in the top and bottom plate surrounding rocks is not limited to the depth in the present embodiment; the number, angle and length of the anchor rods are not limited to the present embodiment; and the material of the waterproof layer is not limited to the provisions of the present embodiment.

[0063] Among them, in this application, when processing the artificial dam body 20 of this application, it is necessary to evaluate the stability of the artificial dam body in the prior art. The stability evaluation method of the artificial dam body in the prior art is:

[0064] 1. Combined with the stress conditions of the artificial dam, establish a mechanical model of the artificial dam;

[0065] 2. Solve the mechanical model and determine the weak areas of the artificial dam;

[0066] 3. Improve the construction method of artificial dams and enhance the stability of artificial dams.

[0067] In step 1, the artificial dam body is subjected to stress loads from the top and bottom plates, the squeezing effect of the coal pillar dam body 10 and the hydrostatic pressure of the underground reservoir 200, and sensors are arranged at corresponding positions to realize dynamic monitoring, providing a reliable data source for long-term stability monitoring of the artificial dam body.

[0068] In step 2, the yield function of the artificial dam is constructed and the critical criterion for instability is proposed:

[0069] In the three-dimensional principal stress space, the interface formed by connecting all yield points is called the yield surface. The state of the yield surface is described by constructing the yield function of the ultimate water level (z) of the artificial dam body 20:

[0070]

[0071] I1=σ1+σ2+σ3=σ x +σy +σ z ;

[0072]

[0073] In the above formula, I1 is the first invariant of the stress tensor, J2 is the second invariant of the stress deviator, σ1, σ2 and σ3 are the principal stresses in the three directions respectively; σ x , σ y and σ z are the normal stresses in three mutually perpendicular directions; τ xy , τ yz and τ zx is the shear stress in the three plane directions; α and K are the shear stresses only related to the cohesion C and the friction angle The relevant test constants;

[0074] When f<0, the function value f(x, y, z) falls within the yield surface, and the dam is in an elastic state;

[0075] When f = 0, the function value f(x, y, z) falls on the yield surface, and the dam is in a critical yield state;

[0076] When f>0, the function value f(x, y, z) falls outside the yield surface and the dam is damaged.

[0077] According to calculations, the weak areas of the artificial dam body in the prior art mainly occur in the center of the artificial dam body, where the bending moment is the largest and more prone to failure and damage; and on both sides of the artificial dam body, the connection between the artificial dam body and the coal pillar dam body 10 is subject to complex forces and is also subject to water erosion. In addition, the artificial dam body and the coal pillar dam body 10 have different material properties and are prone to relative displacement.

[0078] In step 3, the artificial dam construction method is improved, and the center and both sides of the artificial dam are taken as weak areas, and the stability of the artificial dam is improved by effectively reinforcing them. And through targeted improvements, the waste of materials can be avoided.

[0079] In order to better understand the solution of the present application, the steps of the construction method of the artificial dam body 20 are as follows:

[0080] 1. A fixed groove 11 of a certain depth is dug out on the coal pillar dam bodies 10 on both sides, and a first groove and a second groove of a certain depth are dug out in the top and bottom plate surrounding rocks according to the designed shape of the artificial dam body 20.

[0081] 2. Anchor multiple groups of first anchor rods 30 in the fixed groove 11 dug out in the coal pillar dam body 10 along the height direction of the artificial dam body 20, and the direction of the first anchor rods 30 is perpendicular to the artificial dam body 20; anchor multiple groups of second anchor rods in the first slot along the length direction of the artificial dam body 20, each group of second anchor rods has 3 second anchor rods, and the three second anchor rods are distributed at intervals along the first direction, one of which is perpendicular to the artificial dam body 20, and the other two are arranged symmetrically at an inclination angle to the artificial dam body 20; anchor multiple groups of third anchor rods in the second slot along the length direction of the artificial dam body 20, each group of third anchor rods has 3 third anchor rods, and the three third anchor rods are distributed at intervals along the first direction, one of which is perpendicular to the artificial dam body 20, and the other two are arranged symmetrically at an inclination angle to the artificial dam body 20.

[0082] 3. A steel skeleton beam is arranged between the coal pillar dam bodies 10 on both sides and in the fixing groove 11 in a staggered manner in the horizontal and vertical directions. Similarly, a steel skeleton beam is arranged at a distance on the bottom plate in the middle of the two coal pillar dam bodies 10 .

[0083] 4. Between the coal pillar dam bodies 10 on both sides, a concrete formwork is set up according to the designed position of the artificial dam body 20 , and the steel skeleton beam is located inside the formwork of the artificial dam body 20 .

[0084] 5. Pour concrete into the formwork until it is full. After the concrete solidifies and cures, remove the formwork.

[0085] 6. A waterproof layer is provided on the inner side of the artificial dam body 20 including the web 21, the wing plate 22 and the connection part 23 close to the underground reservoir 200 to prevent water leakage of the underground reservoir 200.

[0086] The artificial dam body 20 is composed of steel frame beams that are arranged in a staggered manner in the horizontal and vertical directions. After integral casting, the mechanical structure is stable, forming a stable artificial dam body 20.

[0087] Among them, some coal mines usually adopt the method of increasing the thickness of the artificial dam body 20 to solve the problem that the artificial dam body 20 is very easy to be damaged. However, the increase in the thickness of the artificial dam body 20 can only ensure short-term stability and improve the water storage limit head, and cannot eradicate the fatigue damage caused by water erosion. At the same time, not all positions of the dam body are weak areas. The method of increasing the thickness of the dam body undoubtedly increases the construction cost and the maintenance cycle of the dam body. The present invention evaluates the stability of the artificial dam body 20, determines the weak areas that are easy to be damaged, and proposes a corresponding modification method, which is more targeted. By reinforcing the weak areas, the stability of the dam body is guaranteed while reducing the waste of materials.

[0088] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0089] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0090] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0091] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0092] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0093] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An underground reservoir support device, characterized in that: The underground reservoir support device comprises: Two coal pillar dam bodies (10) are respectively located on two sides of the tunnel (100), and the two coal pillar dam bodies (10) are both provided with fixing grooves (11), and the two fixing grooves (11) are arranged opposite to each other. The extension direction of the tunnel (100) is a first direction, and the coal pillar dam bodies (10) extend along the first direction; An artificial dam body (20) is arranged between the two coal pillar dam bodies (10). The artificial dam body (20) is used to separate the tunnel (100) and the underground water reservoir (200). The artificial dam body (20) comprises a web (21) and two wing plates (22). The two wing plates (22) are respectively located at two ends of the web (21). The two wing plates (22) are arranged in a one-to-one correspondence with the two fixing grooves (11). The wing plates (22) are fixed in the corresponding fixing grooves (11). A connecting portion (23) is provided between the wing plates (22) and the web (21). The dimension of the wing plates (22) along the first direction is greater than the dimension of the web (21) along the first direction. The dimension of the connecting portion (23) along the first direction gradually increases in a direction away from the web (21). The coal pillar dam body (10) and the artificial dam body (20) cooperate to support the underground water reservoir (200).

2. The underground reservoir support device according to claim 1, characterized in that: The connecting portion (23) has an arc-shaped structure.

3. The underground reservoir support device according to claim 1, characterized in that: The dimension of the connecting portion (23) along the first direction is set between 0.5m and 1.0m.

4. The underground reservoir support device according to claim 1, characterized in that: A first reinforcement structure (24) is provided on a side of the web (21) close to the underground water reservoir (200), and the first reinforcement structure (24) is arranged to protrude from the end surface of the web (21).

5. The underground reservoir support device according to claim 4, characterized in that: A spoiler (241) is provided at the end of the first reinforcement structure (24) away from the web (21), and the cross-sectional area of ​​the spoiler (241) gradually decreases in a direction away from the web (21).

6. The underground reservoir support device according to claim 1, characterized in that: A second reinforcement structure (25) is provided on one side of the web (21) close to the tunnel (100), and the second reinforcement structure (25) is arranged to protrude from the end surface of the web (21).

7. The underground reservoir support device according to claim 1, characterized in that: The top plate of the lane (100) is provided with a first groove, the bottom plate of the lane (100) is provided with a second groove, the top of the artificial dam body (20) is fixed in the first groove, and the bottom of the artificial dam body (20) is fixed in the second groove.

8. The underground reservoir support device according to claim 7, characterized in that: The size of the artificial dam body (20) located in the first slot is set between 50 cm and 100 cm, and the size of the artificial dam body (20) located in the second slot is set between 50 cm and 100 cm.

9. The underground reservoir support device according to claim 1, characterized in that: The underground water reservoir support device further comprises a plurality of first anchor rods (30), wherein the plurality of first anchor rods (30) are arranged between the artificial dam body (20) and the coal pillar dam body (10), and the plurality of first anchor rods (30) are arranged at intervals along the height direction of the artificial dam body (20).

10. The underground reservoir support device according to claim 1, characterized in that: The underground reservoir support device also includes: A plurality of second anchor rods, wherein the plurality of second anchor rods are arranged between the artificial dam body (20) and the top plate of the tunnel (100), and some of the second anchor rods are arranged obliquely; A plurality of third anchor rods are provided between the artificial dam body (20) and the bottom plate of the tunnel (100), and some of the third anchor rods are provided at an angle.

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