Evaporation pond structure
By setting up multiple layers of anti-seepage membrane materials and arch slope structures on the inner wall slope of the evaporation pond cofferdam, the problem of easy tearing of the anti-seepage membrane materials is solved, and the anti-seepage capacity and environmental safety of the evaporation pond are improved.
Patent Information
- Application Number
- CN202422763191.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-12
AI Technical Summary
The anti-seepage membrane material of the evaporation pond is easily torn, causing sewage in the pond to leak out, affecting environmental safety.
A first anti-seepage membrane layer is set on the inner wall slope of the cofferdam of the evaporation pond, and a first inward-concave arch slope structure is laid along the slope direction. Combined with a multi-layer structure of composite geotextile drainage net, fine sand layer, gravel layer and concrete layer, the anti-seepage capacity is enhanced and reinforced with leakage detection pipes and anchoring devices.
It improves the anti-seepage capacity of the evaporation pond, reduces the risk of pond leakage, avoids environmental pollution, and enhances the adaptability and stability of the structure.
Smart Images
Figure CN223397497U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of evaporation ponds, in particular to an evaporation pond structure. Background Art
[0002] Evaporation ponds are open-air treatment facilities primarily used to treat concentrated brine, high-salinity wastewater, and other wastewater. They vaporize water through natural evaporation, thereby reducing wastewater volume and concentrating salt. These wastewater treatment facilities utilize solar energy for natural evaporation. Evaporation ponds must be leak-proof to prevent contamination from seeping out and contaminating the surrounding environment.
[0003] At present, the commonly used anti-seepage treatment method for evaporation ponds is to lay anti-seepage membrane materials on the inner wall of the evaporation pond and construct concrete structures. However, during the use of evaporation ponds, affected by factors such as temperature, water pressure and construction, the inner wall slope of the pond cofferdam often collapses and cracks, causing the anti-seepage membrane materials to tear, and then causing sewage to leak out of the pond. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide an evaporation pond structure to solve the problem that the anti-seepage membrane material on the slope of the pond body is easily torn, thereby improving the anti-seepage ability of the evaporation pond.
[0005] The technical solution adopted by the present invention to solve its technical problems is: an evaporation pond structure, including an evaporation pond body, a first anti-seepage membrane layer is laid in the evaporation pond body, the upper end of the first anti-seepage membrane layer is fixed on the cofferdam of the evaporation pond body, and at the inner wall slope of the cofferdam, along the slope direction of the slope, the first anti-seepage membrane layer is provided with at least one first arch slope structure that is recessed into the slope surface and extends along the transverse direction of the slope surface, the groove formed by the inner side recess of the first arch slope structure is a cavity, and an upper protective layer is laid on the first anti-seepage membrane layer.
[0006] Furthermore, the upper protective layer includes a composite geotextile drainage net with geomembranes on the upper and lower sides, a fine sand layer with a particle size range of 0.25mm to 0.125mm, a gravel layer and a concrete layer. The composite geotextile drainage net, fine sand layer, gravel layer and concrete layer are laid in sequence from bottom to top.
[0007] Furthermore, a supporting ridge is provided on the fine sand layer at the foot of the slope surface for supporting the gravel layer on the slope surface.
[0008] Furthermore, the first anti-seepage membrane layer has a smooth surface structure.
[0009] Furthermore, a lower protective layer for protecting the outer surface of the first impermeable membrane layer is laid between the first impermeable membrane layer and the evaporation pond body.
[0010] Furthermore, a second anti-seepage membrane layer is provided between the composite geotextile drainage net and the fine sand layer, and the upper end of the second anti-seepage membrane layer is fixed on the cofferdam of the evaporation pond body;
[0011] At the inner wall slope of the cofferdam, along the slope direction of the slope, the second anti-seepage membrane layer is provided with at least one second arch slope structure that is recessed toward one side and extends along the transverse direction of the slope, and the groove formed by the recess of the second arch slope structure is also a cavity.
[0012] Furthermore, a leakage detection tube is provided at the bottom of the cofferdam, the outer end of which extends outside the cofferdam, and the inner end of the leakage detection tube extends between the first impermeable membrane layer and the composite geotextile drainage net. The leakage detection tube and the first impermeable membrane layer are sealed.
[0013] Furthermore, the leakage detection tube and the first anti-seepage membrane layer are sealed by waterproof concrete.
[0014] Furthermore, an anchoring groove is provided on the cofferdam, and the first anti-seepage membrane layer and the second anti-seepage membrane layer extend into the anchoring groove and are pressed and fixed on the cofferdam by concrete pressing blocks arranged in the anchoring groove.
[0015] The beneficial effect of the present invention is as follows: in the evaporation pond structure of the present invention, at the inner wall slope 12 of the cofferdam 11, along the slope direction of the slope 12, the first anti-seepage membrane layer 2 is provided with at least one first arch slope structure 21 that is recessed into the slope 12 and extends in the transverse direction of the slope 12. The groove 22 formed by the recess of the first arch slope structure 21 is a cavity. When the evaporation pond encounters problems such as collapse or cracking of the soil slope of the inner wall of the cofferdam during use, the first anti-seepage membrane layer 2 can generate a certain elongation deformation by stretching the first arch slope structure 21, thereby adapting to the slope deformation of the soil of the evaporation pond body 1 after being under pressure, thereby avoiding being torn, thereby improving the anti-seepage ability of the evaporation pond and reducing the possibility of environmental pollution due to leakage of the evaporation pond. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural diagram of the utility model;
[0017] Figure 2 This is a schematic diagram of the setting of the support ridge;
[0018] Figure 3 This is a schematic diagram of the drainage pipe setting;
[0019] As shown in the figure: evaporation pond body 1, first anti-seepage membrane layer 2, fine sand layer 3, gravel layer 4, supporting ridge 5, concrete layer 6, lower protective layer 7, composite geotextile drainage net 8, second anti-seepage membrane layer 9, leakage detection pipe 10, cofferdam 11, slope surface 12, first arch slope structure 21, groove 22, second arch slope structure 91, anchor trench 111, concrete blocks 112. DETAILED DESCRIPTION
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0021] like Figure 1 、 Figure 2 As shown, the evaporation pond structure of the present invention includes an evaporation pond body 1, within which a first impermeable membrane layer 2 is laid. The upper end of the first impermeable membrane layer 2 is fixed to the cofferdam 11 of the evaporation pond body 1. At the inner wall slope 12 of the cofferdam 11, along the slope direction of the slope 12, the first impermeable membrane layer 2 is provided with at least one first arched slope structure 21 that is recessed into the slope 12 and extends transversely to the slope 12. The recessed groove 22 formed by the inner side of the first arched slope structure 21 is a cavity. An upper protective layer is laid on the first impermeable membrane layer 2.
[0022] In the evaporation pond structure of the present invention, at the inner wall slope 12 of the cofferdam 11, along the slope direction of the slope 12, the first anti-seepage membrane layer 2 is provided with at least one first arch slope structure 21 that is recessed into the slope 12 and extends in the transverse direction of the slope 12. The groove 22 formed by the recess of the first arch slope structure 21 is a cavity. In this way, when the evaporation pond encounters problems such as collapse or cracking of the soil slope of the inner wall of the cofferdam during use, the first anti-seepage membrane layer 2 can produce a certain elongation deformation by stretching the first arch slope structure 21, thereby adapting to the slope deformation of the soil of the evaporation pond body 1 after being under pressure, thereby avoiding being torn, and improving the anti-seepage ability of the evaporation pond.
[0023] There can be one or more first arched slope structures 21, with the specific number of first arched slope structures 21 being determined based on factors such as the soil compaction during construction of the evaporation pond body 1 and the surrounding geological environment. The greater the number of first arched slope structures 21, the better the ability of the first anti-seepage membrane layer 2 to stretch and deform during later use, making it less susceptible to tearing. In areas where the evaporation pond body 1 is experiencing severe slope collapse or cracking, a larger number of first arched slope structures 21 should also be installed.
[0024] The upper protective layer plays the role of protecting the first anti-seepage membrane layer 2. The upper protective layer can be made of only a concrete layer; or only a sand and gravel layer; or both; or other material layers. In the present invention, the upper protective layer includes a composite geotextile drainage net 8 with geomembranes on both the upper and lower sides, a gravel layer 4, a concrete layer 6, and a fine sand layer 3 with a particle size range of 0.25mm to 0.125mm. The composite geotextile drainage net 8, fine sand layer 3, gravel layer 4, and concrete layer 6 are laid in sequence from bottom to top. The above structure can better protect the first anti-seepage membrane layer 2, and the composite geotextile drainage net 8 is arranged on its upper side, which makes it easier for the first anti-seepage membrane layer 2 to stretch and deform as the slope surface 12 deforms in the later stage, which is beneficial to prevent the first anti-seepage membrane layer 2 from being torn.
[0025] In order to increase the stability of the upper protective layer on the slope, especially the gravel layer 4, as Figure 2 As shown, a support ridge 5 is provided on the fine sand layer 3 at the foot of the slope surface 12 to support the gravel layer 4 on the slope surface 12. In the present invention, the support ridge 5 is a concrete structure.
[0026] The anti-seepage membrane layer can have a smooth or rough surface structure. In the present invention, preferably, the first anti-seepage membrane layer 2 has a smooth surface structure. A smooth surface structure of the first anti-seepage membrane layer 2 makes it easier for the first anti-seepage membrane layer 2 to slide relative to the composite geotextile drainage net 8, thereby facilitating the elongation and deformation of the first anti-seepage membrane layer 2 during later use and preventing it from being torn. The anti-seepage membrane layer is generally made of an anti-seepage membrane.
[0027] In order to protect the first impermeable membrane layer 2, a lower protective layer 7 is laid between the first impermeable membrane layer 2 and the evaporation pond body 1 to protect the outer surface of the first impermeable membrane layer 2. The lower protective layer 7 can be made of various membrane materials. In the embodiment of the utility model, the lower protective layer 7 is made of non-woven geotextile.
[0028] In order to further increase the anti-seepage ability of the pond body, a second anti-seepage membrane layer 9 is also provided between the composite geotextile drainage net 8 and the fine sand layer 3. The upper end of the second anti-seepage membrane layer 9 is fixed on the cofferdam 11 of the evaporation pond body 1. At the inner wall slope 12 of the cofferdam 11, along the slope direction of the slope 12, the second anti-seepage membrane layer 9 is provided with at least one second arch slope structure 91 that is recessed to one side and extends in the transverse direction of the slope 12. The groove 22 formed by the recess of the second arch slope structure 91 is also a cavity. The second arch slope structure 91 can be recessed to its outer side or to its inner side (the fine sand layer side). A double-layer anti-seepage structure is adopted, and the second anti-seepage membrane layer 9 can also be extended by the deformation of the second arch slope structure when the slope is deformed. It is not easy to tear, which can better ensure the anti-seepage ability of the evaporation pond. The second anti-seepage membrane layer 9 is also preferably a smooth structure.
[0029] like Figure 3 As shown, a leakage detection tube 10 is provided at the bottom of the cofferdam 11, the outer end of which extends outside the cofferdam 11. The inner end of the leakage detection tube 10 extends between the first impermeable membrane layer 2 and the composite geotextile drainage net 8. The leakage detection tube 10 is sealed against the first impermeable membrane layer 2. In this way, when the second impermeable membrane layer 9 is damaged, the leaked sewage can flow through the composite geotextile drainage net 8 to the leakage detection tube 10, and then flow out through the leakage detection tube 10. Therefore, the waterproof condition of the pond can be understood by observing the leakage detection tube 10.
[0030] The leakage detection tube 10 and the first anti-seepage membrane layer 2 can be connected by conventional lap welding. In the present invention, the leakage detection tube 10 and the first anti-seepage membrane layer 2 are connected by waterproof concrete pouring to achieve sealing.
[0031] The membrane material layer can be fixed with anchor rods. Figure 1 As shown, the cofferdam 11 is provided with an anchoring groove 111. The first and second anti-seepage membrane layers 2 and 9 extend into the anchoring groove 111 and are fixed to the cofferdam 11 by means of concrete blocks 112 disposed in the anchoring groove 111. The anchoring groove can be formed with bricks as the membrane. To prevent sharp edges from piercing the anti-seepage membrane, the right angles of the brick mold can be chamfered with a chamfer radius of r = 50 mm.
Claims
1. An evaporation pond structure, comprising an evaporation pond body (1), wherein a first anti-seepage membrane layer (2) is laid in the evaporation pond body (1), and the upper end of the first anti-seepage membrane layer (2) is fixed to a cofferdam (11) of the evaporation pond body (1), characterized in that: At the inner wall slope (12) of the cofferdam (11), along the slope direction of the slope (12), at least one first arch slope structure (21) is provided on the first anti-seepage membrane layer (2), which is recessed into the slope (12) and extends in the transverse direction of the slope (12); the groove (22) formed by the inner side recess of the first arch slope structure (21) is a cavity, and an upper protective layer is laid on the first anti-seepage membrane layer (2).
2. The evaporation pond structure according to claim 1, wherein: The upper protective layer comprises a composite geotextile drainage net (8) with geomembranes on both the upper and lower sides, a fine sand layer (3) with a particle size range of 0.25 mm to 0.125 mm, a gravel layer (4), and a concrete layer (6). The composite geotextile drainage net (8), the fine sand layer (3), the gravel layer (4), and the concrete layer (6) are laid in sequence from bottom to top.
3. The evaporation pond structure according to claim 2, wherein: The fine sand layer (3) is also provided with a support ridge (5) located at the foot of the slope surface (12) for supporting the gravel layer (4) on the slope surface (12).
4. The evaporation pond structure according to claim 1, wherein: The first anti-seepage membrane layer (2) has a smooth surface structure.
5. The evaporation pond structure according to claim 1, wherein: A lower protective layer (7) for protecting the outer surface of the first impermeable membrane layer (2) is laid between the first impermeable membrane layer (2) and the evaporation pond body (1).
6. The evaporation pond structure according to claim 2, wherein: A second anti-seepage membrane layer (9) is further provided between the composite geotextile drainage net (8) and the fine sand layer (3), and the upper end of the second anti-seepage membrane layer (9) is fixed on the cofferdam (11) of the evaporation pond body (1); At the inner wall slope surface (12) of the cofferdam (11), along the slope direction of the slope surface (12), the second anti-seepage membrane layer (9) is provided with at least one second arch slope structure (91) that is recessed toward one side thereof and extends in the transverse direction of the slope surface (12), and the groove (22) formed by the recess of the second arch slope structure (91) is also a cavity.
7. The evaporation pond structure according to claim 6, wherein: The bottom of the cofferdam (11) is also provided with a leakage detection tube (10) whose outer end extends outside the cofferdam (11); the inner end of the leakage detection tube (10) extends between the first impermeable membrane layer (2) and the composite geotextile drainage net (8); and the leakage detection tube (10) and the first impermeable membrane layer (2) are sealed.
8. The evaporation pond structure according to claim 7, wherein: The leakage detection tube (10) and the first anti-seepage membrane layer (2) are sealed by waterproof concrete.
9. The evaporation pond structure according to claim 6, wherein: An anchoring groove (111) is provided on the cofferdam (11); the first anti-seepage membrane layer (2) and the second anti-seepage membrane layer (9) extend into the anchoring groove (111) and are pressed and fixed on the cofferdam (11) by concrete pressing blocks (112) arranged in the anchoring groove (111).