Waterproof and anti-seepage structure of artificial lake
By adopting soil base layer, gravel layer, composite drainage network and composite waterproof layer structure in artificial lakes, combined with drainage pipes and geogrids, the anti-seepage problem of traditional waterproof blankets in complex geology and water influx is solved, and the waterproofing blankets are realized. More efficient water retention and waterproofing effects.
Patent Information
- Application Number
- CN202420944932.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-30
AI Technical Summary
Due to the complex geology and water influx of existing artificial lakes, traditional waterproof blankets are difficult to effectively prevent seepage, resulting in water loss and unstable waterproof layer.
Adopt a structure including soil base layer, gravel layer, composite drainage network, composite waterproof layer and backfill soil layer. The composite waterproof layer consists of superimposed geotextile layer and geomembrane layer, and the composite drainage network is arranged in the gravel layer and waterproof layer. The drainage pipes and geogrids are used to enhance the bearing capacity and anti-seepage effect.
It improves the water conduction efficiency and the stability of the waterproof layer, significantly improves the overall waterproof and seepage resistance of the artificial lake, and reduces water loss.
Smart Images
Figure CN222206211U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of building and municipal waterproof construction, and specifically relates to an artificial lake waterproof and anti-seepage structure. Background Art
[0002] Existing artificial lakes often lose water due to leakage. For this reason, in traditional engineering designs, a single layer of bentonite waterproof blanket is generally used at the bottom of the lake for anti-seepage treatment. However, the geological conditions of some engineering sites are complex, and there are many dissolutions or dissolution grooves in the site, which makes the soil foundation prone to settlement. This leads to the dislocation and peeling of overlapping waterproof blankets during the construction of laying waterproof blankets. In addition, water gushing often occurs in the construction site. If ordinary geomembrane products are used for anti-seepage treatment, it is difficult to provide anti-seepage and protection effects. Summary of the invention
[0003] In response to at least one of the above-mentioned defects or shortcomings of the prior art, the present application provides an artificial lake waterproof and anti-seepage structure, which can achieve good water conduction efficiency, improve the stability and reliability of the waterproof layer, and thus achieve the purpose of improving the overall waterproof and anti-seepage performance of the artificial lake.
[0004] In order to achieve the above-mentioned purpose, the present application provides an artificial lake waterproof and anti-seepage structure, comprising:
[0005] Soil base;
[0006] A crushed stone layer, covering the soil base layer and provided with a drainage pipe;
[0007] A composite drainage network is arranged covering the gravel layer;
[0008] a composite waterproof layer covering the composite drainage net arrangement and comprising at least one set of geotextile layers and geomembrane layers stacked one above the other; and
[0009] Backfill the soil layer to cover the composite waterproof layer arrangement.
[0010] In some embodiments, a geogrid for enhancing bearing capacity is embedded in the soil base layer.
[0011] In some embodiments, the gravel layer is a graded gravel layer, the wall of the drainage pipe is provided with drainage holes, and the drainage pipe is wrapped with a drainage geotextile.
[0012] In some embodiments, the drainage hole includes a flower hole; and / or the drainage pipe includes at least one of a PE pipe, a PVC pipe and a PP pipe.
[0013] In some embodiments, at least a portion of the surface of the geomembrane layer is formed as a roughened surface area that has been roughened.
[0014] In some embodiments, the surface roughened area is formed by a nitrogen roughening process.
[0015] In some embodiments, the plurality of geomembrane units laid in the geomembrane layer are fixed by welding.
[0016] In some embodiments, the geomembrane layer includes a HDPE film layer, an EVA film layer or a PVC film layer;
[0017] And / or, the thickness of the geomembrane layer is not less than 1.5 mm;
[0018] And / or, the specification of the multiple geotextile units laid in the geotextile layer is not less than 200g.
[0019] In some embodiments, it is characterized in that the artificial lake waterproof and anti-seepage structure also includes a geocell used to be arranged in the slope area of the artificial lake to enhance stability.
[0020] In some embodiments, the geocell is a honeycomb cell.
[0021] Through the above technical scheme, the composite drainage net is arranged between the gravel layer and the composite waterproof layer, which can further improve the water conduction effect of the structural layer below the composite waterproof layer and achieve good water conductivity. In addition, the composite drainage net has a strong load-bearing capacity and can effectively reduce the impact of underground water on the composite waterproof layer, thereby achieving reliable protection of the composite waterproof layer. At the same time, the composite waterproof layer is composed of at least one geotextile layer and one geomembrane layer stacked together, which can ensure that the composite waterproof layer has a high strength. Therefore, the artificial lake waterproof and anti-seepage structure of the present application can greatly improve the overall waterproof and anti-seepage performance of the artificial lake and reduce water loss.
[0022] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In the drawings:
[0024] Figure 1 This is a schematic diagram of an artificial lake waterproof and anti-seepage structure in a specific implementation manner of the present application.
[0025] Description of Reference Numerals
[0026] 1 Soil base 2 Gravel layer
[0027] 3 Composite drainage net 4 Composite waterproof layer
[0028] 5 Backfill DETAILED DESCRIPTION
[0029] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.
[0030] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with exemplary embodiments.
[0031] like Figure 1 As shown, an exemplary embodiment of the present application provides an artificial lake waterproof and anti-seepage structure, which includes a soil base layer 1, a gravel layer 2, a composite drainage net 3, a composite waterproof layer 4 and a backfill soil layer 5, wherein the soil base layer 1 is a backfilled plain soil base, the gravel layer 2 covers the soil base layer 1 and is buried with a drainage pipe, the composite drainage net 3 covers the gravel layer 2, the composite waterproof layer 4 covers the composite drainage net 3 and includes at least one group of geotextile layers and geomembrane layers stacked up and down, and the backfill soil layer 5 covers the composite waterproof layer 4.
[0032] It can be seen that in the artificial lake waterproof and anti-seepage structure of this exemplary embodiment, the composite drainage net 3 is arranged between the gravel layer 2 and the composite waterproof layer 4, so as to further improve the water conduction effect of the structural layer below the composite waterproof layer 4 and achieve good water conductivity, and the composite drainage net 3 has a strong load-bearing capacity, which can effectively reduce the impact of underground water on the composite waterproof layer 4, thereby achieving reliable protection of the composite waterproof layer 3. At the same time, the composite waterproof layer 3 is composed of at least one geotextile layer and one geomembrane layer stacked together, which can ensure that the composite waterproof layer 3 has a high strength. Therefore, the artificial lake waterproof and anti-seepage structure of this exemplary embodiment can greatly improve the overall waterproof and anti-seepage performance of the artificial lake and reduce water loss.
[0033] In an optional or preferred embodiment, a geogrid for enhancing the bearing capacity is buried in the soil base layer 1. Specifically, the geogrid can restrain the lateral displacement of the soil through its interlocking and biting effects, thereby improving the bearing capacity of the soil base layer 1 and effectively preventing uneven settlement of the soil base layer 1.
[0034] In an optional or preferred embodiment, the gravel layer 2 is a graded gravel layer, and the drainage pipe is buried in the graded gravel layer, which can drain groundwater to a drainage system or a water storage system outside the artificial lake. Among them, a plurality of drainage pipes can be provided to form a drainage network, and the pipe wall of the drainage pipe is provided with drainage holes for water seepage, and the drainage pipe is wrapped with a drainage geotextile, which can play a filtering role to prevent the soil loss of the soil base layer 1 and blockage of the drainage pipe.
[0035] Furthermore, the drainage holes can be formed as flower holes, and the drainage pipes include at least one of PE pipes, PVC pipes and PP pipes. For example, PE pipes can be used alone, or multiple PE pipes and multiple PVC pipes can be combined into a drainage network, etc. This embodiment does not limit this and can be determined according to the actual situation of different projects.
[0036] It should be noted that in the process of burying the drainage pipe, pebbles with a diameter of 3 to 10 cm can be laid on both sides of the drainage pipe so that the pebbles cover the drainage pipe by at least 40 cm. The pebbles can act as a filter, thereby further preventing the drainage pipe from being blocked.
[0037] In order to obtain a composite waterproof layer with a stronger load capacity, at least part of the surface of the geomembrane layer is formed into a roughened surface area after roughening treatment. Specifically, the roughened surface area can be formed by a nitrogen roughening process. On the one hand, the anti-seepage performance of the geomembrane layer after nitrogen roughening is further enhanced. On the other hand, the friction between the geomembrane layer and the geotextile layer can be improved, effectively avoiding the displacement and misalignment of the geomembrane layer and the geotextile layer, which affects the waterproof and anti-seepage effect. Of course, the upper surface of the geomembrane layer can be processed into a roughened surface area, or the upper and lower surfaces of the geomembrane layer can be processed into roughened surface areas at the same time, which is not limited in this embodiment.
[0038] Furthermore, in the process of laying the geomembrane layer, the laid multiple geomembrane units can be fixed by welding, so as to improve the tensile strength of the geomembrane layer and ensure that the geomembrane layer forms an integral seamless structure, thereby ensuring waterproofing and anti-seepage. In the process, an air tightness tester can be used to detect the welding quality of the geomembrane unit. Before the test, it is necessary to block one end of the air duct of the air tightness tester with the welding part, and then inflate and pressurize the other end until the pressure reaches the required value for the test, and maintain the pressure for no less than 15 minutes, and allow the pressure to drop by no more than 10%. If this requirement is met, it can be determined that the welding at this position is qualified, otherwise it is necessary to use a detection liquid (such as soapy water) to find the leaking part, and then use a hot melt welder to repair the leaking part, and then test it again until it is qualified.
[0039] It should be noted that if the water storage depth of the artificial lake is required to be relatively low, a geomembrane layer can be superimposed on a geotextile layer to form a double-layer composite waterproof layer 4; if the water storage depth of the artificial lake is required to be relatively high, two or more groups of geotextile layers and geomembrane layers stacked up and down can be used to form a composite waterproof layer 4. Among them, the geomembrane layer can be one or more of an HDPE film layer, an EVA film layer or a PVC film layer, the thickness of the geomembrane layer is not less than 1.5 mm, and the specification of the multiple geotextile units laid in the geotextile layer is not less than 200 g.
[0040] In an optional or preferred embodiment, the artificial lake waterproof and anti-seepage structure also includes a geocell for being arranged in the slope area of the artificial lake to enhance stability. Specifically, the geocell is a honeycomb cell, which is lightweight and easy to fold, and is very convenient for both transportation and installation. Moreover, after unfolding from a folded state, it can be formed into a three-dimensional structure, and can withstand greater pressure and strain. Therefore, by selecting a geocell in combination with the environment of the slope area of the artificial lake and paving it on the soil of the slope, the stability of the soil in the area can be enhanced, soil loss can be avoided, and it is conducive to the planting of ornamental green plants in the slope area, thereby improving the aesthetics of the artificial lake environment.
[0041] In this embodiment, the geocells installed in the slope area of the artificial lake can be formed by ultrasonic needle welding of multiple cell units. This welding method is well known to technicians in this field and does not belong to the core improvement part of this application, so it will not be repeated here.
[0042] Combined with the above-mentioned artificial lake waterproof and anti-seepage structure, the construction method of the artificial lake waterproof and anti-seepage structure is described below. The specific construction process is as follows:
[0043] (1) backfilling the lake bottom with plain soil to lay an excavated base layer 1, and burying a geogrid in the soil base layer 1;
[0044] (2) Cleaning the soil base 1, laying graded gravel on the soil base 1 to form a gravel layer 2, burying a PE pipe in the gravel layer 2, and then compacting the gravel layer 2;
[0045] (3) Laying a composite drainage net 3 on the gravel layer 2;
[0046] (4) laying a composite waterproof layer 4 on the composite drainage net 3. During the process, a single rough surface HDPE membrane unit can be laid first, and each single rough surface HDPE membrane unit can be welded together using an automatic welding machine, and then a geotextile can be laid. The above operation is repeated to form a composite waterproof layer 4 composed of multiple groups of geomembrane layers and geotextile layers stacked up and down;
[0047] (5) Finally, the soil is backfilled on the composite waterproof layer 4 to form a backfill soil layer 5, and the geocell is buried in the slope area of the artificial lake.
[0048] It should be noted that, in the present application, unless otherwise specified, directional words such as "upper" and "lower" generally refer to upper and lower positions in the vertical direction.
[0049] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0050] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0052] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.
Claims
1. The artificial lake waterproof and anti-seepage structure is characterized by: include: Soil base (1); A crushed stone layer (2) is arranged to cover the soil base layer (1) and is buried with a drainage pipe; A composite drainage net (3) is arranged to cover the gravel layer (2); A composite waterproof layer (4), covering the composite drainage net (3) and comprising at least one set of geotextile layers and geomembrane layers stacked up and down; as well as A soil layer (5) is backfilled to cover the composite waterproof layer (4).
2. The artificial lake waterproof and anti-seepage structure according to claim 1, characterized in that: A geogrid for enhancing the bearing capacity is embedded in the soil base layer (1).
3. The artificial lake waterproof and anti-seepage structure according to claim 1, characterized in that: The crushed stone layer (2) is a graded crushed stone layer, the pipe wall of the drainage pipe is provided with drainage holes, and the drainage pipe is wrapped with a drainage pipe geotextile.
4. The artificial lake waterproof and anti-seepage structure according to claim 3, characterized in that: The drainage hole includes a flower hole; and / or the drainage pipe includes at least one of a PE pipe, a PVC pipe and a PP pipe.
5. The artificial lake waterproof and anti-seepage structure according to claim 1, characterized in that: At least a portion of the surface of the geomembrane layer is formed as a roughened surface area that has been roughened.
6. The artificial lake waterproof and anti-seepage structure according to claim 5, characterized in that: The surface roughening area is formed by a nitrogen roughening process.
7. The artificial lake waterproof and anti-seepage structure according to claim 1, characterized in that: The multiple geomembrane units laid in the geomembrane layer are fixed by welding.
8. The artificial lake waterproof and anti-seepage structure according to claim 1, characterized in that: The geomembrane layer includes a HDPE film layer, an EVA film layer or a PVC film layer; And / or, the thickness of the geomembrane layer is not less than 1.5 mm; And / or, the specification of the multiple geotextile units laid in the geotextile layer is not less than 200g.
9. The artificial lake waterproof and anti-seepage structure according to any one of claims 1 to 8, characterized in that: The artificial lake waterproof and anti-seepage structure also includes a geocell which is arranged in the slope area of the artificial lake to enhance stability.
10. The artificial lake waterproof and anti-seepage structure according to claim 9, characterized in that: The geocell is a honeycomb cell.