Anti-seepage hydraulic engineering dam

Abstract

The utility model relates to the technical field of hydraulic engineering, in particular to an anti-seepage hydraulic engineering dam which comprises a concrete top plate and a concrete bottom plate, an upper tooth wall is fixedly connected to the upper end of the concrete top plate, and a plurality of upper tooth grooves are formed in the upper end of the upper tooth wall. A filtering assembly is fixedly connected between the concrete top plate and the concrete bottom plate, and the rear end of the filtering assembly is fixedly connected with a protection assembly. According to the anti-seepage water conservancy project dam, double anti-seepage barriers are formed through the composite structure of the inclined anti-seepage wall and the two-cloth-one-membrane anti-seepage geomembrane, the inclined anti-seepage wall can guide water flow to be dispersed along the slope surface, seepage pressure is reduced, and the two-cloth-one-membrane anti-seepage geomembrane can be used for preventing the water flow from entering the water conservancy project dam through the isolation and drainage performance of fabric and the low permeability of membrane materials. A water seepage path is effectively blocked, a fixing frame and a separation net are matched, the geomembrane is protected against damage, impurities can be intercepted, and the dam anti-seepage efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water conservancy engineering technical field especially relates to a kind of seepage prevention water conservancy engineering dam. BACKGROUND

[0002] In water conservancy construction, the seepage prevention performance and structural stability of dam are the key to ensure the safe operation of the project. The traditional dam structure often lacks seepage prevention measures, causing water to seep through the dam body or dam foundation. This not only wastes water resources but also easily causes seepage damage to the dam body, piping safety hazards, and serious threats to the service life of the dam and the surrounding safety. At the same time, the traditional dam has weak foundation anti-sliding capacity under the action of water impact and soil pressure, making it prone to displacement and collapse during long-term operation. Therefore, we introduce a seepage prevention water conservancy engineering dam. SUMMARY

[0003] The main purpose of the utility model is to provide a seepage prevention water conservancy engineering dam that can effectively solve the problems in the background art.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows:

[0005] A seepage prevention water conservancy engineering dam includes a concrete top plate and a concrete bottom plate. The upper tooth wall is fixedly connected to the upper end of the concrete top plate. The upper tooth wall has a plurality of upper tooth grooves at the upper end. The lower tooth wall is fixedly connected to the lower end of the concrete bottom plate. The lower tooth wall has a plurality of lower tooth grooves at the lower end. A filter assembly is fixedly connected between the concrete top plate and the concrete bottom plate. A protection assembly is fixedly connected to the rear end of the filter assembly.

[0006] Preferably, the filter assembly includes a seepage prevention wall. The seepage prevention geomembrane is laid at the front end of the seepage prevention wall. The fixed frame is fixedly connected to the front end of the seepage prevention geomembrane. The isolation net is embedded in the inner wall surface of the fixed frame. The seepage prevention wall is fixedly connected between the concrete top plate and the concrete bottom plate.

[0007] By adopting the above technical solution: the seepage prevention wall is made of cement, clay, fine aggregate, water, and external additives (water reducing agent, bentonite) mixed in proportion. It is suitable for soft soil foundation or areas with uneven settlement, can effectively adapt to foundation deformation, and avoid seepage caused by wall cracking.

[0008] Preferably, the seepage prevention wall is set as an upper-narrow lower-wide inclined structure, and the seepage prevention geomembrane is set as "two cloth and one membrane".

[0009] By adopting the above technical solution: the membrane material in the "two-layer geomembrane and one-membrane" structure is set as "linear low-density polyethylene (LLDPE)," which possesses excellent flexibility and deformation resistance. When laid on sloping surfaces, the LLDPE can be tightly bonded to the wall through hot-melt welding to form a continuous and seamless impermeable layer. Even if the dam experiences minor settlement or displacement, the membrane material is not easily torn, ensuring long-term impermeability and reducing the risk of leakage. The two fabric materials in the "two-layer geomembrane and one-membrane" structure are respectively set as "short-fiber needle-punched nonwoven geotextile (polyester)." The materials used are "long-fiber woven geotextile" and "short-fiber needle-punched nonwoven geotextile (polyester material). Short-fiber geotextile has a three-dimensional porous structure, which can effectively isolate the membrane material from the rough wall surface and prevent sharp particles from piercing the membrane. In the application of seepage prevention walls with inclined structures, short-fiber geotextile has strong adhesion to the membrane material and can be laid naturally with the slope of the seepage prevention wall, reducing wrinkles and voids. Long-fiber woven geotextile has excellent tear resistance and tensile strength. When combined with seepage prevention walls with inclined structures, long-fiber woven geotextile can enhance the overall mechanical properties of the "two-layer geotextile and one-membrane" structure and effectively disperse the stress transmitted by the wall.

[0010] Preferably, the protective component includes a vertical seepage barrier wall, a reinforcing plate is fixedly connected to the front end of the vertical seepage barrier wall, and a drainage component is fixedly connected to the front end of the reinforcing plate.

[0011] By adopting the above technical solution: reinforced concrete "uses C30-C40 high-strength concrete as the base material, and is equipped with HRB400 grade steel bars with a diameter of 12-25mm and a spacing of 150-200mm to form a two-way steel mesh. Through vibration compaction process, the strength and impermeability of the wall are ensured." It can withstand high water pressure and is rigidly connected to the concrete top slab and concrete bottom slab to form a stable vertical seepage barrier, effectively cutting off deep seepage paths. The reinforcing plate is made of "Q345 low-alloy high-strength structural steel, with a plate thickness of 8-12mm and a hot-dip galvanized surface." The steel plate has extremely high tensile and compressive strength, which can effectively enhance the rigidity of the dam structure. The hot-dip galvanized coating gives it excellent corrosion resistance and extends its service life, providing reliable support for the vertical seepage barrier wall in the environment of water scouring.

[0012] Preferably, the vertical seepage barrier and the reinforcing plate are both fixedly connected between the concrete top slab and the concrete bottom slab.

[0013] By adopting the above technical solution, the vertical seepage barrier wall and the reinforcing plate are fixedly connected to the concrete roof slab, thus constructing a stable three-dimensional frame.

[0014] Preferably, the drainage component includes a drainage mesh plate, the drainage mesh plate has a drainage groove at its front end, and the drainage groove has several through-flow channels on its left and right inner walls. The rear end of the drainage mesh plate is fixedly connected to the front end of the drainage groove.

[0015] By adopting the above technical solution: the drainage mesh is made of "304 or 316 stainless steel" and is made into a mesh shape by laser cutting or stamping process. It is wear-resistant, impact-resistant, and can withstand large water flow impact force, ensuring the long-term stable operation of the drainage components.

[0016] Preferably, the drainage mesh is configured as a mesh structure, the front end of the drainage mesh is fixedly connected to the rear end of the anti-seepage wall, and the drainage mesh is fixedly connected between the concrete top slab and the concrete bottom slab.

[0017] By adopting the above technical solution: the grid-shaped drainage mesh has a large water passage area, which can quickly collect and divert water that seeps into the dam. Through the cooperation of drainage channels and diversion channels, the accumulated water is quickly discharged from the dam body, effectively reducing the uplift pressure inside the dam body, preventing seepage damage and piping problems caused by excessive water pressure, and ensuring the structural safety of the dam.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In this utility model, a double seepage barrier is formed by the composite structure of an inclined seepage barrier wall and a "two-layer fabric and one-layer membrane" seepage barrier geomembrane. The inclined seepage barrier wall can guide the water flow to disperse along the slope and reduce seepage pressure. The "two-layer fabric and one-layer membrane" seepage barrier geomembrane effectively blocks the seepage path by virtue of the isolation and drainage performance of the fabric and the low permeability of the membrane material. With the help of the fixing frame and the isolation net, it can not only protect the geomembrane from damage, but also intercept impurities, which can greatly improve the seepage prevention efficiency of the dam.

[0020] 2. In this utility model, the concrete top slab and bottom slab are designed with interlocking upper and lower toothed walls and corresponding upper and lower toothed grooves to enhance the connection strength between the dam and the foundation and the superstructure. The lower toothed groove is embedded in the foundation, and the upper toothed groove fits into the superstructure. Combined with the reinforcement effect of the vertical anti-seepage wall and the reinforcing plate, a stable three-dimensional support system is formed. The drainage components promptly discharge seepage water from the dam body, reduce uplift pressure, and prevent seepage damage, thereby significantly improving the overall anti-sliding and anti-deformation capacity of the dam and extending the service life of the project. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a seepage-proof water conservancy dam according to the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of a filter component for a seepage-proof water conservancy project dam according to the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of a protective component for a seepage-proof water conservancy project dam according to the present invention;

[0024] Figure 4This is a schematic diagram of the drainage component of a seepage-proof water conservancy dam according to the present invention.

[0025] In the diagram: 1. Concrete top slab; 2. Concrete bottom slab; 3. Upper toothed wall; 4. Upper toothed groove; 5. Lower toothed wall; 6. Lower toothed groove; 7. Filter assembly; 8. Protective assembly; 71. Impermeable wall; 72. Impermeable geomembrane; 73. Fixing frame; 74. Isolation net; 81. Vertical impermeable wall; 82. Reinforcing plate; 83. Drainage assembly; 831. Drainage mesh board; 832. Drainage channel; 833. Diversion channel. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Please see Figures 1-4 This utility model provides a technical solution:

[0030] A seepage-proof water conservancy dam includes a concrete top slab 1 and a concrete bottom slab 2. An upper toothed wall 3 is fixedly connected to the upper end of the concrete top slab 1. The upper toothed wall 3 has several upper toothed grooves 4 at its upper end. A lower toothed wall 5 is fixedly connected to the lower end of the concrete bottom slab 2. The lower toothed wall 5 has several lower toothed grooves 6 at its lower end. A filter assembly 7 is fixedly connected between the concrete top slab 1 and the concrete bottom slab 2. A protective assembly 8 is fixedly connected to the rear end of the filter assembly 7.

[0031] In this embodiment, the filter assembly 7 includes a seepage barrier wall 71, with a seepage barrier geomembrane 72 laid at the front end of the seepage barrier wall 71. A fixing frame 73 is fixedly connected to the front end of the seepage barrier geomembrane 72, and an isolation net 74 is embedded in the inner wall of the fixing frame 73. The seepage barrier wall 71 is fixedly connected between the concrete top slab 1 and the concrete bottom slab 2. The seepage barrier wall 71 is configured as a sloping structure that is narrower at the top and wider at the bottom, and the seepage barrier geomembrane 72 is configured as "two layers of fabric and one layer of membrane". The protection assembly 8 includes a vertical seepage barrier wall 81, with a reinforcing plate 82 fixedly connected to the front end of the vertical seepage barrier wall 81. A drainage assembly 83 is fixedly connected to the front end of the reinforcing plate 82. Both 81 and the reinforcing plate 82 are fixedly connected between the concrete top slab 1 and the concrete bottom slab 2; the drainage component 83 includes a drainage mesh plate 831, the drainage mesh plate 831 has a drainage channel 832 at its front end, and the drainage channel 832 has several through-flow channels 833 on its left and right inner walls. The rear end of the drainage mesh plate 831 is fixedly connected to the front end of the drainage channel 832; the drainage mesh plate 831 is configured as a mesh structure, the front end of the drainage mesh plate 831 is fixedly connected to the rear end of the anti-seepage wall 71, and the drainage mesh plate 831 is fixedly connected between the concrete top slab 1 and the concrete bottom slab 2.

[0032] It should be noted that this utility model is a seepage-proof water conservancy project dam. During installation and use, the foundation is first treated, removing surface debris and weak soil layers. A suitable foundation reinforcement method is adopted according to the geological conditions. A concrete base slab 2 is poured. During the pouring process, the lower toothed wall 5 is integrally cast with the concrete base slab 2, so that several lower toothed grooves 6 at the lower end of the lower toothed wall 5 are embedded in the foundation, enhancing the stability of the dam foundation. After the concrete base slab 2 reaches its design strength, the concrete top slab 1 is installed. During installation, the upper toothed wall 3 is fixedly connected to the concrete top slab 1, with several upper toothed grooves 4 at the upper end of the upper toothed wall 3 facing upwards. The seepage-proof wall 71 is fixedly connected between the concrete top slab 1 and the concrete base slab 2. A seepage-proofing layer is laid at the front end of the seepage-proof wall 71. The geomembrane 72 adopts a "two-layer fabric and one-layer membrane" structure. When laying it, pay attention to flatness and avoid wrinkles to ensure the seepage prevention effect. The fixing frame 73 is installed at the front end of the geomembrane 72 and fixed by bolts or welding. Then, the isolation net 74 is embedded in the inner wall of the fixing frame 73 to protect the geomembrane 72 and perform preliminary filtration. The vertical seepage prevention wall 81 and the reinforcing plate 82 are fixedly connected between the concrete top slab 1 and the concrete bottom slab 2. The vertical seepage prevention wall 81 further enhances the seepage prevention capacity of the dam, while the reinforcing plate 82 improves the overall structural strength. The drainage net plate 831 is fixed at the rear end of the seepage prevention wall 71 and needs to be fixedly connected between the concrete top slab 1 and the concrete bottom slab 2. Since the drainage mesh plate 831 is set as a mesh structure, its position must be accurate during installation to facilitate subsequent drainage. The drainage channel 832 is installed at the front end of the drainage mesh plate 831, so that the several through diversion channels 833 on the left and right inner walls of the drainage channel 832 correspond to the mesh of the drainage mesh plate 831 to ensure smooth drainage.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A seepage-proof water conservancy dam, comprising a concrete top slab (1) and a concrete bottom slab (2), characterized in that: The upper end of the concrete top slab (1) is fixedly connected to an upper toothed wall (3), and the upper end of the upper toothed wall (3) has several upper toothed grooves (4). The lower end of the concrete bottom slab (2) is fixedly connected to a lower toothed wall (5), and the lower end of the lower toothed wall (5) has several lower toothed grooves (6). A filter assembly (7) is fixedly connected between the concrete top slab (1) and the concrete bottom slab (2). A protective assembly (8) is fixedly connected to the rear end of the filter assembly (7). The filter assembly (7) includes a seepage barrier wall (71), with a seepage barrier geomembrane (72) laid at the front end of the seepage barrier wall (71). A fixing frame (73) is fixedly connected to the front end of the seepage barrier geomembrane (72). An isolation net (74) is embedded in the inner wall of the fixing frame (73). The seepage barrier wall (71) is fixedly connected between the concrete top slab (1) and the concrete bottom slab (2).

2. The seepage-proof water conservancy engineering dam according to claim 1, characterized in that: The impermeable wall (71) is configured as a sloping structure that is narrow at the top and wide at the bottom, and the impermeable geomembrane (72) is configured as "two layers of fabric and one layer of membrane".

3. The seepage-proof water conservancy engineering dam according to claim 1, characterized in that: The protective component (8) includes a vertical seepage barrier wall (81), a reinforcing plate (82) is fixedly connected to the front end of the vertical seepage barrier wall (81), and a drainage component (83) is fixedly connected to the front end of the reinforcing plate (82).

4. A seepage-proof water conservancy engineering dam according to claim 3, characterized in that: The vertical anti-seepage wall (81) and the reinforcing plate (82) are both fixedly connected between the concrete top plate (1) and the concrete bottom plate (2).

5. A seepage-proof water conservancy engineering dam according to claim 3, characterized in that: The drainage component (83) includes a drainage mesh plate (831), the drainage mesh plate (831) has a drainage groove (832) at its front end, and the drainage groove (832) has several through-flow grooves (833) on its left inner wall and right inner wall. The rear end of the drainage mesh plate (831) is fixedly connected to the front end of the drainage groove (832).

6. A seepage-proof water conservancy engineering dam according to claim 5, characterized in that: The drainage mesh board (831) is configured as a mesh structure. The front end of the drainage mesh board (831) is fixedly connected to the rear end of the anti-seepage wall (71), and the drainage mesh board (831) is fixedly connected between the concrete top slab (1) and the concrete bottom slab (2).

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