retaining walls for water conservancy projects

Abstract

This invention relates to the construction of water conservancy projects, and more particularly to retaining walls for water conservancy projects. The retaining walls are constructed from multiple precast raft slabs connected in series. The precast raft slabs provide a better foundation for the construction of the retaining walls and offer better resistance to settlement and displacement during later use. Compared to direct masonry, the precast raft slabs offer better waterproofing and can be prefabricated, saving construction time. A connecting device is provided between adjacent precast raft slabs to better adjust and maintain their position, improving operational stability. A waterproof structure is provided at the connecting device to prevent water erosion of the dam and to strengthen the connection between adjacent precast raft slabs.

Description

Technical Field

[0001] This invention relates to the construction of water conservancy projects, and more particularly to retaining walls for water conservancy projects. Background Technology

[0002] Slope construction is an important part of water conservancy project construction. Slope construction mainly includes riverbank slopes and dams. Retaining walls are a common method in slope construction, used at the bottom of the slope to prevent slope deformation during backfilling and subsequent use.

[0003] Existing retaining walls mainly include temporary retaining walls and permanent retaining walls. Temporary retaining walls are used to retain soil during the backfilling process. They mainly consist of retaining wall panels, with support devices installed on the back of the retaining wall panels. The support devices include fixed support seats, on which support frames are installed. The support frames generally include multiple diagonal braces. One end of the diagonal brace is hinged to the fixed support seat, and the other end of the diagonal brace is hinged to the upper middle part of the retaining wall panel, thereby supporting the retaining wall panel. Permanent retaining walls are generally built after the main slope construction is completed, then filled with plain soil, paved with slope protection bricks, and sown with slope protection grass seeds.

[0004] The retaining wall located on the backwater side of the dam is built at the bottom of the dam. For higher-level dams, a prism drainage is constructed on the backwater side of the dam to prevent erosion at the dam toe. The retaining wall is built above the prism drainage, which has better resistance to deformation. The overall construction of the prism drainage is relatively large. For small reservoirs, the retaining wall does not have a good foundation and has poor construction stability. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a retaining wall for water conservancy projects that has a fast construction speed and high stability.

[0006] This invention is achieved through the following technical solution: a retaining wall for hydraulic engineering, comprising multiple precast raft slabs connected in series, with the retaining wall mounted on each raft slab. A connecting device is provided between adjacent raft slabs, and a waterproof structure is provided at the connecting device. Each raft slab is also connected to a positioning support device, and a drainage support plate is connected to each raft slab. A drainage ditch is provided on the drainage support plate, and a construction protective layer is provided for the retaining wall and the drainage ditch.

[0007] The positioning support device includes a positioning groove set at the bottom of the precast raft slab and a support body set on the foundation. The positioning groove has a downward-opening arc cross-section, and the support body matches the shape of the positioning groove.

[0008] The waterproof structure includes a water-blocking plate installed at the connection between two adjacent precast raft slabs;

[0009] The construction protective layer includes a waterproof mortar layer applied to the outer side of the retaining wall and drainage ditch, a waterproof membrane layer applied to the surface of the waterproof mortar layer, and a wear-resistant layer applied to the surface of the waterproof membrane layer.

[0010] Furthermore, the support body includes a rigid apex support located in the middle position, the precast raft slab is rotatable around the rigid apex support, the rigid apex support includes an anti-settlement plate pre-embedded in the foundation, a support column is provided above the anti-settlement plate, and the top of the support column is an upward arc.

[0011] Furthermore, the support structure includes a soil layer, a hardening layer is provided on the soil layer, an adhesive layer is provided on the hardening layer, and the top of the support column is located within the adhesive layer.

[0012] Furthermore, the connecting device includes a connecting groove disposed at the end of the precast raft slab, and a connecting column is disposed between two adjacent precast raft slabs, with the end of the connecting column inserted into the connecting groove.

[0013] Furthermore, the precast raft slab is connected to a positioning plate, the positioning plate is provided with positioning pile connection holes, a positioning pile is provided at the positioning pile connection holes, the lower end of the positioning pile extends into the foundation, and the upper end of the positioning pile extends out of the positioning pile connection holes.

[0014] Furthermore, a retaining wall base is provided on the precast raft slab, and the retaining wall is installed on the retaining wall base.

[0015] Furthermore, the construction protective layer also includes a heat dissipation device, which includes a water passage provided at the drainage ditch, an evaporation channel provided at the retaining wall to cooperate with the water passage, the evaporation channel being provided between the waterproof mortar layer and the waterproof membrane layer, and a water supply pipe being provided in the water passage.

[0016] Furthermore, a reflective layer is provided on the surface of the wear-resistant layer.

[0017] Furthermore, the waterproof structure also includes an elastic partition disposed between two adjacent precast raft slabs.

[0018] Furthermore, the elastic partition includes a reinforcing cage, the reinforcing cage being filled with a foaming adhesive mixture, and the reinforcing cage being covered with a rubber layer.

[0019] The beneficial effects of this invention are as follows: The retaining wall for hydraulic engineering includes multiple precast raft slabs connected in series. The retaining wall is mounted on the precast raft slabs, providing a better foundation for the construction of the retaining wall and enhancing its resistance to settlement and displacement during later use. Compared to direct masonry, the precast raft slabs offer better waterproofing and can be prefabricated, saving construction time. A connecting device is provided between adjacent precast raft slabs, which allows for better adjustment and maintenance of the slabs' positions, improving operational stability. A waterproof structure is provided at the connecting device, preventing water erosion of the dam and strengthening its structure. The connection between two adjacent precast raft slabs is further supported by a positioning support device. This device allows for adjustments during the raft slab laying process, reducing construction difficulty and improving efficiency. It also positions the precast raft slabs during retaining wall construction and subsequent use, enhancing stability. Drainage ditches are provided to drain water from the retaining wall, preventing erosion at its base. A construction protective layer is included, comprising a waterproof mortar layer to fill construction joints, strengthen structural connections, and improve waterproofing, as well as a waterproof membrane layer. This membrane layer is vulnerable and is protected by a wear-resistant layer. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of Example 1;

[0021] Figure 2 This is a schematic diagram of the prefabricated raft slab structure in Example 1;

[0022] Figure 3 This is a schematic diagram of the cross-section of a precast raft slab;

[0023] Figure 4 This is a schematic diagram of the construction protective layer structure;

[0024] Figure 5 This is a schematic diagram of the protective layer structure for construction in Example 2;

[0025] Figure 6 This is a schematic diagram of the evaporation channel structure in Example 2;

[0026] Figure 7 This is a schematic diagram showing the connection relationship between two adjacent precast raft slabs in Example 3;

[0027] Figure 8 This is a schematic diagram of an elastic partition structure;

[0028] Figure 9 This is a schematic diagram of a steel cage structure;

[0029] Figure 10 This is a schematic diagram of the cross-section of an elastic partition;

[0030] Figure 11 This is a schematic diagram of the prefabricated raft slab structure in Example 4;

[0031] Figure 12 This is a schematic diagram of the prefabricated raft slab structure in Example 5;

[0032] Figure 13 This is a schematic diagram of the cross-section of the prefabricated raft slab in Example 5;

[0033] Figure 14 This is a schematic diagram of the positioning pile structure in Example 5.

[0034] The components include: 1. Precast raft slab; 2. Retaining wall; 3. Drainage support plate; 4. Water barrier; 5. Heightening plate; 6. Connecting groove; 7. Anti-settlement plate; 8. Support column; 9. Heightening plate connecting groove; 10. Plain soil layer; 11. Hardened layer; 12. Bonding layer; 13. Tensile mesh; 14. Elastic partition; 15. Connecting column; 16. Reinforcing cage; 17. Rubber layer; 18. Foamed adhesive mixture; 19. Retaining wall base; 20. Positioning plate; 21. Positioning pile; 22. Positioning groove; 23. Positioning pile connecting hole; 24. Construction protection layer; 25. Waterproof mortar layer; 26. Waterproof membrane layer; 27. Wear-resistant layer; 28. Water passage; 29. ​​Evaporation passage; 30. Water supply pipe; 31. Base plate; 32. Heat conductor; 33. Water storage tank; 34. Cement column; 35. Dustproof net layer; 36. Reflective layer. Detailed Implementation

[0035] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example 1

[0038] like Figure 1-4As shown, a retaining wall 2 for hydraulic engineering is used in a small reservoir earth-rock dam. It includes multiple prefabricated raft slabs 1 connected in series. Due to their large size, the prefabricated raft slabs 1 are cast on site and transported by a loader after being finished. The retaining wall 2 is on the prefabricated raft slab 1. The cross-section of the retaining wall 2 is trapezoidal. The inward inclination angle is 25-30°, which can better support the dam toe. The outward corner is 15-20°, which reduces the outward extension distance while forming a stable support structure. In this embodiment, the prefabricated raft slab 1 and the retaining wall 2 are integrally formed, and the retaining wall 2 itself also forms a prism drainage structure.

[0039] There is a connecting device between two adjacent precast raft slabs 1, and the connecting device has a waterproof structure. Specifically, the connecting device includes a connecting groove 6 integrally formed at the end of the precast raft slab 1. There are three connecting grooves 6, two on the precast raft slab 1 and one on the retaining wall 2, thereby improving the stability of the connection. There is a connecting column 15 between two adjacent precast raft slabs 1. The end of the connecting column 15 is inserted into the connecting groove 6. The connecting column 15 can be a steel pipe or a reinforced cement column. In this embodiment, a reinforced cement column is used, which is low in cost and has better corrosion resistance. The waterproof structure includes a water-blocking plate 4 installed at the connection between two adjacent precast raft slabs 1. The water-blocking plate 4 can be one of a precast cement board, a rubber board, an asphalt board, or a steel plate. In this embodiment, a precast cement board is selected and is fixed by mortar, which has good waterproof performance and can strengthen the structural strength of the connection of the retaining wall 2.

[0040] The precast raft slab 1 is also connected to a positioning support device, which includes a positioning groove 22 integrally formed on the bottom of the precast raft slab 1 and a support body constructed on the foundation. The positioning groove 22 has a downward-opening arc cross-section, and the support body matches the shape of the positioning groove 22. In this embodiment, the support body includes a rigid apex support located in the middle position. The precast raft slab 1 can rotate around the rigid apex support. The rigid apex support includes an anti-settlement plate 7 embedded in the foundation. There is a support column 8 above the anti-settlement plate 7, and the top of the support column 8 is upward-facing. The support structure consists of an arc-shaped foundation, with the support column 8 and anti-settlement slab 7 integrally cast from concrete. The support structure includes a subgrade layer 10, on which a hardened layer 11 is constructed by compaction. A bonding layer 12 is laid on the hardened layer 11, and the top of the support column 8 is located within the bonding layer 12. The specific construction method is as follows: first, a foundation pit is excavated in the subgrade layer 10 to pre-embed the anti-settlement slab 7 and support column 8; after backfilling and compaction, the hardened layer 11 is obtained. The top of the hardened layer 11 is an upward arc shape, and the top of the support column 8 extends beyond the hardened layer 11. Then, the bonding layer 12 is laid. 2 is the mortar layer. After laying the adhesive layer 12, the precast raft slab 1 is placed before the adhesive layer 12 cures. Since the top of the hardened layer 11 matches the shape of the positioning groove 22, preliminary positioning can be achieved when placing the precast raft slab 1. Due to the good fluidity of the mortar layer, the support column 8 provides rigid support for the threshold raft slab, making it easier to adjust the position of the threshold raft slab. During the adjustment of the precast raft slab 1, the mortar layer is squeezed, thereby improving the uniformity of the connection between the adhesive layer 12, the hardened layer 11, and the precast raft slab 1. After curing, a rigid anti-settlement and waterproof layer is obtained. After the bonding layer 12 is cured, since the support body and the positioning groove 22 are mutually coordinated arcs, the precast raft slab 1 can be prevented from sliding outward during use. Since the overall length of the earth-rock dam of the small reservoir is relatively long and the required height of the retaining wall 2 is relatively high, in the specific construction, the bottom of the retaining wall 2 for water conservancy projects provided in this embodiment is used. After laying, backfilling is carried out, and then the retaining wall 2 is raised above by masonry, hexagonal bricks, etc., to provide more retaining elevation. The construction is convenient and the foundation is stable.

[0041] The precast raft slab 1 is connected to a drainage support plate 3, which has drainage channels. The retaining wall 2 and the drainage channels are covered with a construction protective layer 24. Specifically, the precast raft slab 1 is integrally formed with the drainage support plate 3, which contains a tensile mesh 13 made of steel wire mesh to improve crack resistance and facilitate repair of local defects. The upper surface of the drainage support plate 3 forms drainage channels to drain water from the retaining wall 2 and prevent erosion of the base of the retaining wall 2. The construction protective layer 24 includes a waterproof mortar layer 2 applied to the outer surface of the retaining wall 2 and the drainage channels. 5. A waterproof membrane layer 26 is applied to the surface of the waterproof mortar layer 25, and a wear-resistant layer 27 is laid on the surface of the waterproof membrane layer 26. In this embodiment, the wear-resistant layer 27 is a styrene-butadiene emulsion SD623 modified cement mortar, which has good wear resistance. A reflective layer 36 is laid on the surface of the wear-resistant layer 27. The reflective layer 36 is made of epoxy resin mortar mixed with 1-3wt titanium dioxide. It has poor light absorption capacity, which can reduce the temperature rise. Temperature shock has a great impact on the retaining wall 2. The reflective layer 36 can reduce the temperature difference. At the same time, titanium dioxide also has good wear resistance.

[0042] The outer side of the drainage support plate 3 is integrally formed with a heightening plate connecting groove 9. A heightening plate 5 is installed in the heightening plate connecting groove 9. The heightening plate 5 can be a precast plate or it can be made of cement bricks. In this embodiment, cement bricks are used to better control the height and thickness. By cooperating with the foundation, the drainage channel has a greater depth, which is conducive to drainage. At the same time, it provides better support for the precast raft slab 1 and prevents the precast raft slab 1 from sliding outward.

[0043] Example 2

[0044] like Figure 5-6As shown, a retaining wall 2 for hydraulic engineering differs from embodiment 1 in that the construction protective layer 24 also includes a heat dissipation device. The heat dissipation device includes a water passage 28 laid in the drainage ditch, and an evaporation channel 29 cooperating with the water passage 28 is constructed at the retaining wall 2. The evaporation channel 29 is constructed between the waterproof mortar layer 25 and the waterproof membrane layer 26. Specifically, a crushed stone layer is laid on top of the waterproof mortar layer 25. The crushed stone layer is 40mm thick, with a particle size of 10-12mm and relatively large gaps. The crushed stone can be natural stone, artificial stone, or slag to reduce pollution and avoid damage. The waterproof membrane layer 26 is laid on top of the crushed stone layer, followed by a dustproof netting layer 35. During construction, cement columns 34 are poured intermittently within the crushed stone layer. The lower end of the cement columns 34 connects to the waterproof mortar layer 25, while the upper end of the cement columns 34 passes through the dustproof netting layer 35 and connects to the waterproof membrane layer 26, thus reducing the risk of delamination of the waterproof membrane layer 26. Further fixation by the wear-resistant layer 27 and the reflective layer 36 further prevents delamination of the waterproof membrane layer 26. The crushed stone layer forms a water passage channel 28. Due to the long dam body, water is replenished through both ends of the water passage channel 28 in summer. Simultaneously, a water replenishment pipe 30 is laid within the water passage channel 28 to replenish water. Water outlets are spaced out on the water pipe 30 to quickly replenish water to the middle position. The water supply pipe 30 is laid on the outside of the water passage 28 for easy maintenance. The evaporation channel 29 includes a base plate 31 connected to the waterproof mortar layer 25. Multiple heat conductors 32 are spaced out on the base plate 31. The heat conductors 32 have a rectangular cross-section and are made of reinforced concrete. The reinforcement accounts for 1 / 3 of the weight of the heat conductors 32 and has good thermal conductivity. A water storage tank 33 is formed between two adjacent heat conductors 32. The lower end of the water storage tank 33 is connected to the water passage 28, and the upper end of the water storage tank 33 is connected to the water passage 28. Extending to the top of the retaining wall 2, the width ratio of the heat conductor 32 to the water storage tank 33 is 3:1, thus ensuring stable support for the waterproof membrane layer 26. The heat storage body and the waterproof membrane layer 26 support are connected by epoxy resin mortar. The water storage tank 33 is filled with water, which can be polyurethane foam sponge or porous stone, such as pumice or slag. When the temperature rises, the temperature of the retaining wall 2 rises, and water evaporates from the water storage tank 33. Through the chimney principle, the water vapor in the water passage 28 flows into the water storage tank 33 to replenish the water storage body, thereby cooling the retaining wall 2.

[0045] During use, planting greenery at the outlet of the water storage tank 33 can better promote water flow through the transpiration of the greenery. Soil needs to be added to the top of the water storage tank 33, and the growth of the greenery should be monitored to help determine the continuity of the water passage 28 at that location. In addition, when constructing the water passage 28, the water source of the drainage ditch should be cut off. Based on the outward seepage of the drainage ditch, the leaks in the waterproof membrane layer 26 can be detected, providing a basis for maintenance. It should be noted that low-pressure water replenishment should be used when replenishing water into the water passage 28 to avoid the formation of high pressure inside the water passage 28.

[0046] Example 3

[0047] like Figure 7-10 As shown, a retaining wall 2 for hydraulic engineering differs from embodiment 1 in that its waterproof structure also includes an elastic partition 14 installed between two adjacent precast raft slabs 1. The elastic partition 14 includes a reinforcing cage 16, which is filled with a foaming compound 18 and wrapped with a rubber layer 17. Connecting columns 15 pass through the elastic partition 14. In this embodiment, there can be one or more elastic partitions 14 between two adjacent precast raft slabs 1, depending on the curvature of the dam. When the dam is relatively straight, the difference in the distance between the inner and outer sides of two adjacent precast raft slabs 1 is small, requiring only one elastic partition. When the dam body has a large curvature, the distance between the inner and outer sides of two adjacent precast raft slabs 1 differs greatly, requiring two or more elastic partitions 14 to ensure the waterproof effect at the connection. Correspondingly, the water-retaining plate 4 is made of steel plate or rubber plate for easy shaping. The foaming compound 18 is a mixture of polystyrene foam and waterproof mortar, with a weight ratio of 2:1 between the waterproof mortar and polystyrene foam, which reduces the overall weight while ensuring structural strength. The rubber layer 17 is a vulcanized rubber layer to increase hardness and thus improve stability. After installation, polyurethane mortar is used to coat the gaps for further waterproofing.

[0048] Example 4

[0049] like Figure 11 As shown, a retaining wall 2 for hydraulic engineering differs from embodiment 1 in that a retaining wall base 19 is prefabricated on the prefabricated raft slab 1, and the retaining wall 2 is installed on the retaining wall base 19. The retaining wall 2 and the prefabricated raft slab 1 are prefabricated separately, which results in faster forming speed, higher forming stability, and easier transportation. The disadvantage is that the structural stability is reduced. The connection between the retaining wall base 19 and the retaining wall 2 is arc-shaped, which facilitates installation. Polyurethane mortar is laid at the connection, which has a better sealing effect. The water-blocking plate 4 is made of asphalt and is laid along the joint to ensure waterproofing. The connecting groove 6 is an arc-shaped groove, and correspondingly, the connecting column 15 is arc-shaped, which can better utilize the end space of the prefabricated raft slab 1, while improving the connection strength and deformation resistance. The connecting column 15 is a reinforced concrete column.

[0050] Example 5

[0051] like Figure 12-14 As shown, a retaining wall 2 for hydraulic engineering differs from embodiment 4 in that the precast raft slab 1 is integrally formed with a positioning plate 20, and the positioning plate 20 is integrally formed with a positioning pile connection hole 23. A positioning pile 21 is constructed at the positioning pile connection hole 23. In this embodiment, the upper surface of the positioning plate 20 is inclined, thus having a larger connection area with the retaining wall base 19, resulting in high connection stability. The lower end of the positioning pile 21 has a cone head for easy installation. The middle position of the cross-section of the positioning pile 21 is thickened, thus having higher flexural stability. The lower end of the positioning pile 21 extends into the foundation, and the upper end of the positioning pile 21 extends outside the positioning pile connection hole 23. After the precast raft slab 1 is laid, its position is adjusted, and then the positioning pile 21 is constructed before the retaining wall 2 is constructed. After backfilling, the positioning pile 21 is located within the plain soil layer 10, thus better preventing the precast raft slab 1 from slipping.

[0052] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A retaining wall for hydraulic engineering, characterized in that, The system comprises multiple precast raft slabs connected in series. Retaining walls are installed on each precast raft slab. Connecting devices are installed between adjacent precast raft slabs, and waterproof structures are provided at the connecting devices. Positioning support devices are also connected to each precast raft slab. Drainage trays are connected to each precast raft slab, and drainage channels are provided on the drainage trays. Construction protection layers are provided for the retaining walls and drainage channels. The positioning support device includes a positioning groove set at the bottom of the precast raft slab and a support body set on the foundation. The positioning groove has a downward-opening arc cross-section, and the support body matches the shape of the positioning groove. The waterproof structure includes a water-blocking plate installed at the connection between two adjacent precast raft slabs; The construction protective layer includes a waterproof mortar layer applied to the outer surface of the retaining wall and drainage ditch, a waterproof membrane layer applied to the surface of the waterproof mortar layer, and a wear-resistant layer applied to the surface of the waterproof membrane layer. The construction protective layer also includes a heat dissipation device, which includes a water passage located at the drainage ditch, and an evaporation channel located at the retaining wall that cooperates with the water passage. The evaporation channel is located between the waterproof mortar layer and the waterproof membrane layer, and a water supply pipe is installed inside the water passage. A layer of crushed stone is laid above the waterproof mortar layer, followed by a dustproof netting layer, and then a waterproof membrane layer. Cement columns are poured at intervals within the crushed stone layer, with the lower end of each column connected to the waterproof mortar layer and the upper end passing through the dustproof netting layer and connecting to the waterproof membrane layer. The evaporation channel includes a base plate connected to the waterproof mortar layer. Multiple heat conductors with rectangular cross-sections are installed at intervals on the base plate, forming a water storage tank between adjacent heat conductors. The lower end of the water storage tank communicates with a water passage, and the upper end extends to the top of the retaining wall. The width ratio of the heat conductors to the water storage tank is 3:

1. The heat conductors and the waterproof membrane layer are connected by epoxy resin mortar. The water storage tank is filled with a water-retaining material, which may be polyurethane foam or porous stone. The support structure includes a rigid apex support located in the middle. The precast raft slab can rotate around the rigid apex support. The rigid apex support includes an anti-settlement plate embedded in the foundation. A support column is provided above the anti-settlement plate, and the top of the support column is an upward arc.

2. The retaining wall for water conservancy projects according to claim 1, characterized in that, The support structure includes a soil layer, a hardened layer on the soil layer, and a bonding layer on the hardened layer. The top of the support column is located within the bonding layer.

3. The retaining wall for water conservancy projects according to claim 1, characterized in that, The connecting device includes a connecting groove provided at the end of the precast raft slab, and a connecting column is provided between two adjacent precast raft slabs, with the end of the connecting column inserted into the connecting groove.

4. The retaining wall for water conservancy projects according to claim 1, characterized in that, The precast raft slab is connected to a positioning plate, the positioning plate is provided with positioning pile connection holes, and a positioning pile is provided at the positioning pile connection hole. The lower end of the positioning pile extends into the foundation, and the upper end of the positioning pile extends out of the positioning pile connection hole.

5. The retaining wall for water conservancy projects according to claim 1, characterized in that, The precast raft slab is provided with a retaining wall base, and the retaining wall is set on the retaining wall base.

6. The retaining wall for water conservancy projects according to claim 1, characterized in that, The wear-resistant layer has a reflective layer on its surface.

7. The retaining wall for water conservancy projects according to claim 1, characterized in that, The waterproof structure also includes an elastic partition disposed between two adjacent precast raft slabs.

8. The retaining wall for water conservancy projects according to claim 7, characterized in that, The elastic partition includes a steel cage, inside which a foaming adhesive mixture is provided, and outside the steel cage is a rubber layer.

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