A water-stopping device between a seepage-proof wall and a connecting plate and a method thereof

Abstract

The present invention relates to the field of water conservancy dam engineering, and specifically to a water-stopping device for the seam between an anti-seepage wall and a connecting plate and a method thereof, the device comprising: an upper connecting part; a water-stopping part, the upper connecting part being vertically fixed on the water-stopping part; and a lower connecting part being vertically fixed under the water-stopping part. The present invention can adapt to large displacements because the water-stopping copper sheet can perform relative movement, and can move upstream at point A during the completion period and move downstream after water storage, so that point A of the horizontal section is exactly on the same plumb line as point B, so that the water-stopping copper sheet is in the best form and fully exerts the water-stopping effect.

Description

Technical Field

[0001] The invention relates to the field of water conservancy dam engineering, and in particular to a water-stopping device between a seam of an anti-seepage wall and a connecting plate and a method thereof. Background Art

[0002] In the southwest and northwest regions with rich hydropower resources, a large number of high dams have been built, are under construction or are to be built. Earth-rock dams are the most common type of dam in dam construction today, and are also the fastest growing type of dam, mainly including homogeneous earth dams, core wall dams and concrete face rockfill dams.

[0003] A face rockfill dam is a type of dam that uses the rockfill dam body as a supporting structure and sets a thin layer of concrete face plate on its upstream surface as an anti-seepage structure. In recent years, the technology of concrete face rockfill dams has developed rapidly. The current construction level of concrete face rockfill dams has reached 200m (among which the maximum dam height of Shuibuya is 233m), and several face rockfill dams of 250m to 300m are under design and research. At present, many concrete face rockfill dam projects on deep overburden at home and abroad adopt the form of concrete anti-seepage wall, and set a connecting plate between the anti-seepage wall and the toe plate. The connecting plate is set at the rear of the anti-seepage wall instead of the top. The connecting plate is sandwiched between the anti-seepage wall and the toe plate, and the joint between the anti-seepage wall and the connecting plate is a vertical joint. A large number of face rockfill dams at home and abroad have shown in engineering practice that due to the large displacement of the top of the anti-seepage wall under the action of high water head, the connecting plate is squeezed, and even the extrusion joints reserved between the connecting plates are completely compacted and lose their regulating function, which may cause the connecting plate to be damaged, resulting in damage to the anti-seepage structure between the connecting joints.

[0004] In order to solve the problem that the cut-off wall may squeeze and damage the connecting plate under the action of high water head and large displacement, it is necessary to study the water-stop structure between the cut-off wall and the connecting plate that can adapt to large deformation, especially the water-stop copper sheet, to improve the problem that the traditional water-stop copper sheet cannot adapt to large deformation. Summary of the invention

[0005] The invention provides a water-stopping device between a seam of an anti-seepage wall and a connecting plate and a method thereof, which solves the problems mentioned in the prior art.

[0006] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0007] A water-stopping device between a seepage-proof wall and a connecting plate, characterized by comprising:

[0008] upper connecting portion;

[0009] A water stop portion, on which the upper connecting portion is vertically fixed;

[0010] A lower connecting part is vertically fixed under the water stop part.

[0011] The waterstop portion includes a waterstop plate and a pad rod. The waterstop plate is a U-shaped structure, and the two ends of the waterstop plate are not on the same plane. The pad rod is arranged at the semicircle of the waterstop plate and fits with the waterstop plate. The upper connecting portion and the lower connecting portion are respectively vertically fixed at the two ends of the waterstop plate, and the upper connecting portion and the lower connecting portion are parallel, and the distance from the lower connecting portion to the pad rod is greater than the distance from the upper connecting portion to the pad rod.

[0012] A sealing water stop plate is fixed on the same side of the upper connecting part and the lower connecting part.

[0013] The upper connecting part, the lower connecting part and the water stop plate are copper plates, and the thickness of the water stop plate is 0.8mm-1.2mm.

[0014] The pad rod is a rubber rod.

[0015] It also includes an asphalt fir board, which is arranged in the water stop board, and the upper and lower surfaces of the asphalt fir board are in contact with the water stop board.

[0016] A method for stopping water between a seam of an anti-seepage wall and a connecting plate, comprising at least the above-mentioned device for stopping water between a seam of an anti-seepage wall and a connecting plate, and further comprising the following steps:

[0017] The first step is installation. The lower connection part of the water stop plate is embedded in the anti-seepage wall. The side of the water stop plate connected to the lower connection part is in contact with the anti-seepage wall. A pad is inserted into the bottom of the water stop plate. An asphalt fir board is inserted into the water stop plate. Then, a connection plate is cast on the water stop plate. At the same time, the upper connection part is cast in the connection plate. After the connection plate solidifies, the water stop structure is fixed between the anti-seepage wall and the connection plate.

[0018] The second step is water stopping. When the anti-seepage wall is subjected to water pressure, it moves in the direction of pressure, and the lower connecting part is restricted by the anti-seepage wall and follows the movement. At the same time, the waterstop plate is restricted by the upper connecting part, and the asphalt fir board and the pad rod limit the waterstop plate from vertical pressure deformation. When the lower connecting part follows the movement of the anti-seepage wall, the waterstop plate is deformed by the lateral force, and finally the upper connecting part and the lower connecting part approach the same vertical plane.

[0019] The beneficial effect of the present invention is that since the water-stop copper sheet can perform relative movement and adapt to large displacements, point A moves upstream during the completion period and moves downstream after water storage, so that point A of the horizontal section is exactly on the same plumb line as point B, the water-stop copper sheet is in the best shape and the water-stop effect is fully exerted.

[0020] Since the two upper connecting parts and the lower connecting part of the copper sheet are both arranged vertically, this arrangement allows the water-stop copper sheet to be used in horizontal seams, thereby expanding the application scope of the present invention.

[0021] Since the copper sheet is provided with sealing and water-stopping materials at the two upper connecting parts and the lower connecting part respectively, a layer of water-stopping protection is added, so that the water-stopping safety of the water-stopping copper sheet is increased when it is used. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 It is a schematic diagram of the structure of the optimal water-stopping state after the water-stop plate of the present invention is displaced.

[0025] In the figure: 1-upper connecting part; 2-lower connecting part; 3-water stop plate; 4-pad; 5-asphalt fir board; 6-anti-seepage wall; 7-connecting plate; 8-sealing water stop material. DETAILED DESCRIPTION

[0026] Embodiment 1:

[0027] 1-2, which are schematic structural diagrams of Embodiment 1 of the present invention, a waterproof device between a cut-off wall and a connecting plate, comprising: an upper connecting portion 1; a waterproof portion, on which the upper connecting portion is vertically fixed; and a lower connecting portion 2, which is vertically fixed under the waterproof portion.

[0028] In actual use: the upper connecting part 1 and the lower connecting part 2 are respectively fixed on the opposite surfaces of the connecting plate 7 and the anti-seepage wall 6, and are respectively perpendicular to the connecting plate 7 and the anti-seepage wall 6. When the anti-seepage wall 6 is subjected to the thrust of water pressure, the anti-seepage wall moves, and at the same time, the water-stop part adapts to the deformation, thereby ensuring that the anti-seepage wall 6 and the connecting plate 7 are sealed and a water-stopping effect is achieved.

[0029] Embodiment 2:

[0030] Compared with Example 1, referring to Figure 1, the difference of this embodiment is that: the water stop portion includes a water stop plate 3 and a pad rod 4, the water stop plate 3 is a U-shaped structure, and the two ends of the water stop plate 3 are not on the same plane, the pad rod 4 is arranged at the semicircle of the water stop plate 3 and fits with the water stop plate 3, the upper connecting portion 1 and the lower connecting portion 2 are respectively vertically fixed at the two ends of the water stop plate 3, and the upper connecting portion 1 and the lower connecting portion 2 are parallel, and the distance from the lower connecting portion 2 to the pad rod 4 is greater than the distance from the upper connecting portion 1 to the pad rod 4.

[0031] In actual use: In the early stage of installation, the displacement distance of the anti-seepage wall 6 is calculated through on-site construction parameters and geographical parameters, and the gap between the two ends of the U-shaped water-stop copper sheet is set according to this distance. Therefore, the end of the waterstop plate 3 in contact with the anti-seepage wall 6 is longer than the length of the contact between the waterstop plate 3 and the connecting plate 7 when the anti-seepage wall 6 is displaced.

[0032] In this embodiment, the displacement distance of the anti-seepage wall 6 is calculated based on existing data, and the calculation method is well known in the art.

[0033] Embodiment 3:

[0034] Reference Figure 1 Compared with Embodiment 1 or 2, the difference of this embodiment is that a sealing water stop plate 8 is fixed on the same side of the upper connecting portion 1 and the lower connecting portion 2 .

[0035] In actual use: In actual use, the upper connecting part 1 and the lower connecting part 2 are respectively embedded in the opposite surfaces of the connecting plate 7 and the anti-seepage wall 6. Water is fluid. Under the action of water pressure, water will pass through the gaps between the upper connecting plate 7 and the lower connecting plate 7 and the water stop plate 3. The sealing water stop plate 8 can prevent water from passing through and prevent water seepage in the dam.

[0036] In this embodiment, the sealing water stop plate 8 can use a rubber plate as the sealing material or other materials with sealing properties.

[0037] Embodiment 4:

[0038] Reference Figure 1 Compared with Embodiment 1, 2 or 3, the difference of this embodiment is that the upper connecting part 1, the lower connecting part 2 and the water stop plate 3 are copper plates, and the thickness of the water stop plate 3 is 0.8 mm-1.2 mm.

[0039] In actual use: the copper plate is ductile and flexible. When the anti-seepage wall 6 is displaced, the waterstop plate 3 can be deformed. In actual use, if the thickness of the waterstop plate 3 is too thin, the waterstop plate 3 will bend, and if it is too thick, the waterstop plate 3 will not be easy to deform. It is most appropriate to use a waterstop plate 3 with a thickness between 0.8mm-1.2mm.

[0040] Embodiment 5:

[0041] Reference Figure 1 Based on Example 4, the difference of this embodiment is that the pad rod 4 is a rubber rod.

[0042] In actual use: the pad rod 4 is a rubber rod. When the lower part of the water stop plate 3 is displaced, the pad rod 4 prevents the water stop plate 3 from being folded and unable to deform. The rubber rod can increase the friction with the water stop plate 3 and can rotate when the water stop plate 3 is deformed.

[0043] Embodiment 6:

[0044] Reference Figure 1 Compared with the fifth embodiment, the present embodiment is different in that: it further comprises an asphalt fir board 5 , which is arranged in the water stop board 3 , and the upper and lower surfaces of the asphalt fir board 5 are in contact with the water stop board 3 .

[0045] In actual use: the asphalt fir board 5 can support the U-shaped water stop board 3 to be folded in half, and the asphalt on the surface of the fir board can ensure that the water stop board 3 slides on the asphalt fir board 5, and also plays a waterproof role.

[0046] Embodiment 7:

[0047] Reference Figure 1-2 A method for stopping water between a cut-off wall and a connecting plate, comprising at least a device for stopping water between a cut-off wall and a connecting plate as described in any one of the above embodiments, and further comprising the following steps:

[0048] The first step is installation. The lower connection part 2 of the water stop plate 3 is embedded in the anti-seepage wall 6. The side of the water stop plate 3 connected to the lower connection part 2 is in contact with the anti-seepage wall 6. The pad 4 is inserted into the bottom of the water stop plate 3. The asphalt fir board 5 is inserted into the water stop plate 3. Then, the connecting plate 7 is poured on the water stop plate 3. At the same time, the upper connection part 1 is poured in the connecting plate 7. After the connecting plate 7 solidifies, the water stop structure is fixed between the anti-seepage wall 6 and the connecting plate 7.

[0049] The second step is water stopping. When the anti-seepage wall 6 is subjected to water pressure, the anti-seepage wall 6 moves in the direction of pressure, and the lower connecting part 2 is restricted by the anti-seepage wall 6 and follows the movement. At the same time, the water stop plate 3 is restricted by the upper connecting part 1, and the asphalt fir board 5 and the pad 4 limit the water stop plate 3 from being deformed by vertical pressure. When the lower connecting part 2 moves with the anti-seepage wall 6, the water stop plate 3 is deformed by the lateral force, and finally the upper connecting part 1 and the lower connecting part 2 approach the same vertical plane.

[0050] The above is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Within the knowledge scope of ordinary technicians in the field, various changes can be made without departing from the purpose of the present invention, which are all within the protection scope of this technology.

Claims

1. A water-stopping device between an anti-seepage wall and a connecting plate, characterized in that ,include: Upper connecting portion (1); A water stop portion, on which the upper connecting portion is vertically fixed; A lower connecting portion (2), the lower connecting portion (2) being vertically fixed under the water stop portion; The water stop portion comprises a water stop plate (3) and a pad (4); the water stop plate (3) is a U-shaped structure, and the two ends of the water stop plate (3) are not on the same plane; the pad (4) is arranged at a semicircle of the water stop plate (3) and fits with the water stop plate (3); the upper connecting portion (1) and the lower connecting portion (2) are respectively vertically fixed at the two ends of the water stop plate (3), and the upper connecting portion (1) and the lower connecting portion (2) are parallel, and the distance from the lower connecting portion (2) to the pad (4) is greater than the distance from the upper connecting portion (1) to the pad (4); The upper connecting portion (1) and the lower connecting portion (2) are respectively fixed to the opposite surfaces of the connecting plate (7) and the anti-seepage wall (6); A sealing water stop plate (8) is fixed on the same side of the upper connecting portion (1) and the lower connecting portion (2); It also includes an asphalt fir board (5), wherein the asphalt fir board (5) is arranged inside the water stop board (3), and the upper and lower surfaces of the asphalt fir board (5) are in contact with the water stop board (3); When the lower connecting portion (2) moves along with the anti-seepage wall (6), the water stop plate (3) is deformed by the lateral force, and finally the upper connecting portion (1) and the lower connecting portion (2) approach the same vertical plane.

2. The waterproof device between the anti-seepage wall and the connecting plate according to claim 1, characterized in that: The upper connecting portion (1), the lower connecting portion (2) and the water stop plate (3) are copper plates, and the water stop plate (3) has a thickness of 0.8 mm to 1.2 mm.

3. The waterproof device between the anti-seepage wall and the connecting plate according to claim 1, characterized in that: The pad rod (4) is a rubber rod.

4. A method for sealing water between the seams of an anti-seepage wall and a connecting plate, characterized in that: The invention comprises at least a waterproof device between a cut-off wall and a connecting plate as claimed in any one of claims 1 to 3, and further comprises the following steps: The first step is installation. The lower connection part (2) of the water stop plate (3) is embedded in the anti-seepage wall (6). The side of the water stop plate (3) connected to the lower connection part (2) is in contact with the anti-seepage wall (6). The pad (4) is inserted into the bottom of the water stop plate (3). The asphalt fir board (5) is inserted into the water stop plate (3). Then, the connection plate (7) is cast on the water stop plate (3). At the same time, the upper connection part (1) is cast in the connection plate (7). After the connection plate (7) solidifies, the water stop structure is fixed between the anti-seepage wall (6) and the connection plate (7); The second step is water stopping. When the anti-seepage wall (6) is subjected to water pressure, the anti-seepage wall (6) moves in the direction of the pressure, and the lower connecting part (2) is restricted by the anti-seepage wall (6) and moves along with it. At the same time, the water stop plate (3) is restricted by the upper connecting part (1), and the asphalt fir board (5) and the pad (4) restrict the water stop plate (3) from being deformed by the vertical pressure. When the lower connecting part (2) moves along with the anti-seepage wall (6), the water stop plate (3) is deformed by the lateral force. Finally, the upper connecting part (1) and the lower connecting part (2) approach the same vertical plane.

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