Anti-seepage wall structure capable of improving anti-seepage performance

Abstract

The utility model discloses an anti-seepage wall structure capable of improving anti-seepage performance, which comprises a dam body, and geotechnical cloth, a gravel cushion layer and grouted rubble are sequentially laid on the upstream dam surface of the dam body from top to bottom. The two ends of the geotechnical cloth are connected with a wave wall on the top of the dam body and a presser foot at the bottom of the dam body respectively, an anti-seepage film is arranged on the dam face below the geotechnical cloth, one end of the anti-seepage film is connected with the wave wall, and the other end of the anti-seepage film penetrates through the dam face and is connected with a concrete anti-seepage wall located in the dam body. In addition, the dam body is filled with two layers of impermeable film protection materials which are located on the upper side and the lower side of the impermeable film penetrating through the dam body respectively. Angle steel pressing strips are arranged at the connecting positions of the anti-seepage film and the wave wall and the connecting positions of the anti-seepage film and the concrete anti-seepage wall respectively and fixed through bolts, and a weather-resistant sealant layer is arranged on one side of the upstream face of the concrete anti-seepage wall. The anti-seepage performance and the stability of the anti-seepage wall structure are improved, the service life of the anti-seepage wall structure is prolonged, the construction process is simplified, and good economic benefits and social benefits are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy and hydropower engineering construction, and specifically relates to a cutoff wall structure for improving the anti-seepage performance. Background Art

[0002] In water conservancy projects, the cutoff wall is an important part to ensure the safety of the dam. The existing cutoff wall structures often have leakage problems due to material aging or improper treatment during construction, which in turn affects the safety and service life of the entire project. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a cutoff wall structure for improving the anti-seepage performance, which can effectively prevent water penetration and enhance the overall stability and safety of the dam.

[0004] To solve the above technical problem, the technical solution adopted by the utility model is: a cutoff wall structure for improving the anti-seepage performance, including a dam body, on the upstream dam surface of the dam body, a geotextile, a sand and gravel cushion layer and a rubble masonry are laid in sequence from top to bottom;

[0005] The geotextile located at the top of the dam body forms a connection with the wave wall provided at the top of the dam body, and the geotextile located at the bottom of the dam body forms a connection with the toe weight provided at the bottom of the dam.

[0006] A layer of anti-seepage membrane is further provided on the dam surface below the geotextile. One end of the anti-seepage membrane forms a connection with the wave wall, and the other end of the anti-seepage membrane passes through the dam surface and forms a connection with the concrete cutoff wall located in the dam body.

[0007] In a preferred scheme, two layers of anti-seepage membrane protection materials are filled in the dam body, and the two layers of anti-seepage membrane protection materials are respectively located on the upper and lower sides of the anti-seepage membrane passing through the dam body.

[0008] In a preferred scheme, a first angle steel pressing strip is fixedly provided at the corner position of the water-facing side of the wave wall. The horizontal section of the first angle steel pressing strip presses and covers one end of the anti-seepage membrane, and the first angle steel pressing strip is fixed on the wave wall through a first bolt.

[0009] In a preferred scheme, a second angle steel pressing strip is fixedly provided on the upper part of the water-facing side of the concrete cutoff wall. The vertical section of the second angle steel pressing strip presses and covers one end of the anti-seepage membrane, and the second angle steel pressing strip is fixed on the cutoff wall through a second bolt.

[0010] In a preferred scheme, a weather-resistant sealant layer is provided on the side wall of the concrete cutoff wall below the second angle steel pressing strip, and the weather-resistant sealant layer is provided at the corner position formed by the second angle steel pressing strip and the wall surface of the concrete cutoff wall.

[0011] The provided anti-seepage wall structure for improving anti-seepage performance of the utility model has the following beneficial effects by adopting the above structure:

[0012] (1) By arranging multiple protective structures such as geotextile, sand-gravel cushion layer, and rubble masonry on the upstream dam surface of the dam body, the direct erosion of the water body on the dam body is effectively reduced, thereby improving the anti-seepage ability of the overall structure. The reliable connection between the anti-seepage membrane, the wave wall, and the concrete anti-seepage wall forms a continuous anti-seepage barrier, greatly reducing the possibility of water body penetration;

[0013] (2) The anti-seepage membrane protective material filled in the dam body further strengthens the anti-seepage membrane, avoiding the damage of the anti-seepage membrane caused by external factors;

[0014] (3) The design of fixing the first angle steel pressing strip and the second angle steel pressing strip by bolts not only ensures the tight fitting of the anti-seepage membrane but also facilitates daily maintenance and inspection. The weather-resistant sealant layer arranged below the second angle steel pressing strip enhances the waterproof performance of the connection and also increases the durability of the structure. Description of the Drawings

[0015] The following further illustrates the utility model in conjunction with the drawings and embodiments:

[0016] Figure 1 It is a schematic diagram of the dam body cross-sectional structure of the utility model.

[0017] Figure 2 It is a schematic diagram of the connection position structure between the anti-seepage membrane and the wave wall of the utility model.

[0018] Figure 3 It is a schematic diagram of the connection structure between the anti-seepage membrane and the upstream dam surface of the utility model.

[0019] Figure 4 It is a schematic diagram of the connection position structure between the anti-seepage membrane and the concrete anti-seepage wall of the utility model.

[0020] In the figure: Dam body 1, Geotextile 2, Sand-gravel cushion layer 3, Rubble masonry 4, Anti-seepage membrane 5, Wave wall 6, Anti-seepage membrane protective material 7, Toe of slope 8, Concrete anti-seepage wall 9, First angle steel pressing strip 10, First bolt 11, Second angle steel pressing strip 12, Weather-resistant sealant layer 13, Second bolt 14. Detailed Embodiment

[0021] As Figures 1-4 shown in, an anti-seepage wall structure for improving anti-seepage performance of the present invention includes a dam body 1, and a geotextile 2, a sand-gravel cushion layer 3, and a rubble masonry 4 are successively laid from top to bottom on the upstream dam surface of the dam body 1;

[0022] The geotextile 2 located at the top of the dam body 1 is connected to the wave - break wall 6 provided at the top of the dam body 1, and the geotextile 2 located at the bottom of the dam body 1 is connected to the toe weight 8 provided at the bottom of the dam.

[0023] A layer of anti - seepage membrane 5 is also provided on the dam surface below the geotextile 2. One end of the anti - seepage membrane 5 is connected to the wave - break wall 6, and the other end of the anti - seepage membrane 5 passes through the dam surface and forms a connection with the concrete anti - seepage wall 9 located inside the dam body 1.

[0024] Furthermore, two layers of anti - seepage membrane protective materials 7 are filled inside the dam body 1. The two layers of anti - seepage membrane protective materials 7 are respectively located on the upper and lower sides of the anti - seepage membrane 5 passing through the dam body 1 to better protect the anti - seepage membrane 5 from external force damage.

[0025] Even further, a first angle steel pressing strip 10 is fixedly provided at the corner position of the water - facing side of the wave - break wall 6. The horizontal section of the first angle steel pressing strip 10 presses one end of the anti - seepage membrane 5, and the first angle steel pressing strip 10 is fixed to the wave - break wall 6 through the first bolt 11 to ensure the tight connection between the anti - seepage membrane 5 and the wave - break wall 6.

[0026] In addition, a second angle steel pressing strip 12 is fixedly provided at the upper part of the water - facing side of the concrete anti - seepage wall 9. The vertical section of the second angle steel pressing strip 12 presses one end of the anti - seepage membrane 5, and the second angle steel pressing strip 12 is fixed to the anti - seepage wall 9 through the second bolt 14.

[0027] A weather - resistant sealant layer 13 is provided on the side wall of the concrete anti - seepage wall 9 below the second angle steel pressing strip 12. The weather - resistant sealant layer 13 is provided at the corner position formed by the second angle steel pressing strip 12 and the wall surface of the concrete anti - seepage wall 9, which is used to further enhance the anti - seepage effect and extend the service life of the structure.

[0028] The anti - seepage wall structure of the present utility model effectively enhances the anti - seepage performance by arranging multiple protective structures on the upstream surface of the dam body, such as geotextile 2, sand - gravel cushion layer 3, grouted stone 4, etc., and by combining the anti - seepage membrane 5 with the concrete anti - seepage wall 9. At the same time, through the fixing method of angle steel pressing strips and bolts, the reliable connection between the anti - seepage membrane and the wave - break wall 6 and the concrete anti - seepage wall 9 is ensured, and the weather - resistant sealant layer 13 further improves the sealing performance of the connection part.

Claims

1. An anti-seepage wall structure for improving anti-seepage performance, comprising a dam body (1), characterized in that: The upstream dam surface of the dam body (1) is provided with a geotextile (2), a sand and gravel cushion layer (3) and mortar masonry (4) in sequence from top to bottom; The geotextile (2) located at the top of the dam body (1) is connected to a wave-breaking wall (6) provided at the top of the dam body (1), and the geotextile (2) located at the bottom of the dam body (1) is connected to a pressure foot (8) provided at the bottom of the dam; A layer of anti-seepage membrane (5) is also provided on the dam surface below the geotextile (2), one end of the anti-seepage membrane (5) is connected to the wave-breaking wall (6), and the other end of the anti-seepage membrane (5) passes through the dam surface and is connected to the concrete anti-seepage wall (9) located in the dam body (1).

2. The anti-seepage wall structure for improving anti-seepage performance according to claim 1, characterized in that: The dam body (1) is filled with two layers of anti-seepage membrane protection material (7), and the two layers of anti-seepage membrane protection material (7) are respectively located on the upper and lower sides of the anti-seepage membrane (5) passing through the dam body (1).

3. The anti-seepage wall structure for improving anti-seepage performance according to claim 1, characterized in that: A first angle steel strip (10) is fixedly provided at a corner position of the water-facing surface of the wave-breaking wall (6), a horizontal section of the first angle steel strip (10) is arranged to cover one end of the anti-seepage membrane (5), and the first angle steel strip (10) is fixed to the wave-breaking wall (6) by a first bolt (11).

4. The anti-seepage wall structure for improving anti-seepage performance according to claim 1, characterized in that: A second angle steel strip (12) is fixedly provided on the upper part of the water-facing side of the concrete anti-seepage wall (9), the vertical section of the second angle steel strip (12) is arranged to cover one end of the anti-seepage membrane (5), and the second angle steel strip (12) is fixed to the anti-seepage wall (9) by a second bolt (14).

5. The anti-seepage wall structure for improving anti-seepage performance according to claim 4, characterized in that: A weather-resistant sealant layer (13) is provided on the side wall of the concrete anti-seepage wall (9) below the second angle steel strip (12), and the weather-resistant sealant layer (13) is arranged at the corner formed by the second angle steel strip (12) and the wall surface of the concrete anti-seepage wall (9).

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