Geotextile preventing water penetration after lapping
By using rubber geotextile substrate and waterproof components at the geotextile overlap, combined with hot-melt joints and semi-vulcanized structures, the problem of poor sealing at the geotextile overlap is solved, achieving the effects of preventing water seepage and improving soil stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING ZHENGLONG SHUNDA POLYMER MATERIALS CO LTD
- Filing Date
- 2025-06-06
- Publication Date
- 2026-06-12
AI Technical Summary
Existing impermeable geotextiles have poor sealing at the overlaps, which can easily lead to water seepage and affect the stability of the soil.
It adopts rubber geotextile substrate and waterproof components, including hot melt pads, waterproof layers, mounting parts, protrusions, fasteners, connecting components and waterproof components. The connection is strengthened by hot melt joints and semi-vulcanized structure. Combined with waterproof geomembrane, geotextile filter material and drainage net core material, it enhances waterproof performance and structural strength and prevents leakage.
It improves the sealing of geotextile overlaps, prevents water seepage, enhances soil stability and service life, adapts to long-term loads and harsh environments, and reduces construction costs.
Smart Images

Figure CN224351187U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of polymer materials technology, and in particular to a geotextile that prevents water seepage after overlapping. Background Technology
[0002] Geotextile, also known as geotextile fabric, is a permeable geosynthetic material made of synthetic fibers through needle punching or weaving. The finished product is cloth-like, generally 4-6 meters wide and 50-100 meters long. Geotextiles are divided into woven geotextiles and non-woven geotextiles. Currently, geotextiles are mainly used in water conservancy, ports, waterways, railways, highways and other projects with small diameter silt and high stress. Geotextiles are often used to enhance the stability of the soil and prevent soil erosion. However, existing geotextiles have a drawback: they are prone to water seepage. If water seepage occurs, the geotextile will absorb water and become heavy. Under the action of gravity, this may cause the tunnel to collapse.
[0003] The existing technology (CN220564960U) discloses a waterproof geotextile comprising a geotextile substrate, wherein an upper waterproof layer and a lower waterproof layer are respectively provided on the upper and lower sides of the geotextile substrate, an upper water-retaining layer is provided at the upper end of the upper waterproof layer, and a lower water-retaining layer is provided at the lower end of the lower waterproof layer. The purpose of this invention is to provide a waterproof geotextile that possesses characteristics such as impermeability, water retention, and needle-punched cross-linking, effectively preventing water penetration and loss, improving the stability, strength, and lifespan of the geotextile, and is suitable for various engineering fields such as high-speed rail, highways, water conservancy, hydropower, and environmental protection projects.
[0004] However, the above-mentioned solution has poor sealing at the overlap of the geotextile, which can easily lead to water seepage and thus affect the stability of the soil. Utility Model Content
[0005] The purpose of this invention is to provide a geotextile that prevents water seepage after overlapping, in order to solve the problem that existing impermeable geotextiles have poor sealing at the overlapping parts, which easily leads to water seepage and thus affects the stability of the soil.
[0006] To achieve the above objectives, this utility model provides a geotextile for preventing water seepage after overlapping, comprising a rubber geotextile substrate and a waterproof component. The waterproof component includes two hot-melt pads, two waterproof layers, an mounting component, a protrusion, a fixing component, two connecting components, and a waterproof component. The two hot-melt pads are respectively fixedly connected to the rubber geotextile substrate and located at both ends of the rubber geotextile substrate. The two waterproof layers are respectively fixedly connected to the hot-melt pads and located on both sides of the hot-melt pads. The mounting component is fixedly connected to the rubber geotextile substrate and located on one side of the rubber geotextile substrate. The protrusion is fixedly connected to the mounting component and located on one side of the mounting component. The fixing component is fixedly connected to the rubber geotextile substrate and located on the other side of the rubber geotextile substrate. The fixing component has a limiting groove located on one side of the fixing component. The two connecting components are respectively disposed on the sides of the rubber geotextile substrate. The two waterproof components are respectively located on both sides of the waterproof layers.
[0007] The connecting component includes a connector and a semi-vulcanized structure. The connector is slidably connected to the rubber geotextile substrate and is located on one side of the rubber geotextile substrate. The semi-vulcanized structure is fixedly connected to the connector and is located on one side of the rubber geotextile substrate.
[0008] The waterproof component includes a waterproof geomembrane, a geotextile filter material, and a drainage net core material. The waterproof geomembrane is fixedly connected to the waterproof layer and located on one side of the waterproof layer. The geotextile filter material is fixedly connected to the waterproof geomembrane and located on one side of the waterproof geomembrane. The drainage net core material is fixedly connected to the geotextile filter material and located on one side of the geotextile filter material.
[0009] The waterproof component further includes a fiberglass grid and a reinforcing grid fabric layer. The fiberglass grid is fixedly connected to the drainage net core material and is located on the side of the drainage net core material. The reinforcing grid fabric layer is fixedly connected to the fiberglass grid and is located on the side of the fiberglass grid.
[0010] The waterproof component also includes an abrasion-resistant surface layer, which is fixedly connected to the reinforcing grid fabric layer and located on one side of the reinforcing grid fabric layer.
[0011] This invention relates to a geotextile for preventing water seepage after overlapping. The ends of the rubber geotextile substrate are fixed with hot-melt pads to strengthen the connection between the rubber geotextile substrate and the waterproof layer. The joint has high strength and durability, adapting to long-term loads and harsh environments. The hot-melt joint ensures the integrity of the seepage prevention system and prevents leakage. When a connection is needed on the side of the geotextile substrate, the protrusion on the side mounting piece engages with the limiting groove on the fixing piece, and the connection is sealed and strengthened by the connecting member. The surface of the rubber geotextile substrate is reinforced with a waterproof layer and waterproof member to enhance waterproof performance. The connection is sealed and strengthened at the joint by the connecting member. This invention solves the problem of poor sealing at the overlapping parts of existing impermeable geotextiles, which easily leads to water seepage and affects soil stability. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0014] Figure 2 This is a structural schematic diagram of the entire utility model from another perspective.
[0015] Figure 3 This is a cross-sectional view of the entire utility model.
[0016] Figure 4 yes Figure 3 A magnified view of detail A.
[0017] 101-Rubber geotextile substrate, 102-Waterproof component, 103-Hot melt pad, 104-Waterproof layer, 105-Installation component, 106-Protrusion, 107-Fixer, 108-Connecting component, 109-Waterproof component, 110-Limiting groove, 111-Connecting component, 112-Semi-vulcanized structure, 113-Waterproof geomembrane, 114-Geotextile filter material, 115-Drainage net core material, 116-Fiberglass grid, 117-Reinforced grid fabric layer, 118-Abrasion-resistant surface layer. Detailed Implementation
[0018] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.
[0019] Please see Figures 1-4 ,in, Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 2 This is a structural schematic diagram of the entire utility model from another perspective. Figure 3 This is a cross-sectional view of the entire utility model. Figure 4 yes Figure 3 A magnified view of detail A.
[0020] This utility model provides a geotextile for preventing water seepage after overlapping, comprising a rubber geotextile substrate 101 and a waterproof component 102. The waterproof component 102 includes two hot-melt pads 103, two waterproof layers 104, an installation component 105, a protrusion 106, a fixing component 107, two connecting components 108, a waterproof component 109, a fiberglass grid 116, a reinforcing grid fabric layer 117, and an anti-abrasion surface layer 118. The connecting component 108 includes a connector 111 and a semi-vulcanized structure 112. The waterproof component 109 includes a waterproof geomembrane 113, a geotextile filter material 114, and a drainage net core material 115. The aforementioned solution solves the problem of poor sealing at the overlapping parts of existing impermeable geotextiles, which easily leads to water seepage and affects the stability of the soil.
[0021] In this specific embodiment, two hot-melt pads 103 are fixedly connected to the rubber geotextile substrate 101 and are located at both ends of the rubber geotextile substrate 101. Two waterproof layers 104 are fixedly connected to the hot-melt pads 103 and are located on both sides of the hot-melt pads 103. The mounting member 105 is fixedly connected to the rubber geotextile substrate 101 and is located on one side of the rubber geotextile substrate 101. The protrusion 106 is fixedly connected to the mounting member 105 and is located on one side of the mounting member 105. The fixing member 107 is fixedly connected to the rubber geotextile substrate 101 and is located on the other side of the rubber geotextile substrate 101. The fixing member 107 has the limiting groove 110, which is located on one side of the fixing member 107. Two connecting members 108 are respectively disposed on the side of the rubber geotextile substrate 101. Two waterproof members 109 are respectively located on the side of the rubber geotextile substrate 101. On both sides of the waterproof layer 104, the two ends of the rubber geotextile substrate 101 are fixed with hot-melt pads 103 to strengthen the connection between the rubber geotextile substrate 101 and the waterproof layer 104. The joint has high strength and durability, and can adapt to long-term loads and harsh environments. The hot-melt joint ensures the integrity of the seepage prevention system and avoids leakage. When the side of the geotextile substrate needs to be connected, the protrusion 106 on the side mounting member 105 cooperates with the limiting groove 110 on the fixing member 107, and the connection is sealed and strengthened by the connecting member 108. The waterproof performance of the rubber geotextile substrate 101 is strengthened by the waterproof layer 104 and the waterproof member 109. The connection is sealed and strengthened by the connecting member 108 at the joint. This solves the problem of poor sealing at the overlap of the geotextile in the existing impermeable geotextile, which easily leads to water seepage and affects the stability of the soil.
[0022] The connector 111 is slidably connected to the rubber geotextile substrate 101 and located on one side of the rubber geotextile substrate 101. The semi-vulcanized structure 112 is fixedly connected to the connector 111 and located on one side of the rubber geotextile substrate 101. The connector 111 is located on the side of the rubber geotextile substrate 101 and can slide to a certain extent. When connecting, the connectors 111 on both sides are squeezed to make the semi-vulcanized structure 112 contact. The semi-vulcanized structure 112 is provided on the weft edge of the rubber geotextile substrate 101. Through on-site mechanical heating and pressure vulcanization, the sealing performance during overlap can be increased, effectively preventing water seepage in the overlap part. It can improve the waterproof performance and service life of the geotextile and is suitable for various engineering scenarios that require waterproofing. The semi-vulcanized structure 112 uses sulfur and accelerators to effectively improve the fatigue crack resistance.
[0023] Secondly, the waterproof geomembrane 113 is fixedly connected to the waterproof layer 104 and located on one side of the waterproof layer 104. The geotextile filter material 114 is fixedly connected to the waterproof geomembrane 113 and located on one side of the waterproof geomembrane 113. The drainage net core material 115 is fixedly connected to the geotextile filter material 114 and located on one side of the geotextile filter material 114. The waterproof geomembrane 113 is a high-molecular PE geomembrane layer. The geotextile filter material 114, the drainage net core material 115, and the... The waterproof geomembrane 113 is composited together. The geotextile filter material 114 has the functions of reverse filtration, drainage, and isolation. While allowing water or gas in the soil to pass through the fabric and be discharged freely, it can effectively prevent soil particles from passing through. The drainage net core material 115 forms a drainage channel, which can allow the water that passes through to be discharged horizontally to the drainage ditches on both sides. The waterproof geomembrane 113, as a waterproof layer, can prevent water in the soil from seeping into the soil and causing insufficient bearing capacity of the subgrade foundation. When used in conjunction with the existing waterproofing and drainage system, it can improve the waterproofing and drainage effect and reduce construction costs.
[0024] Meanwhile, the fiberglass grid 116 is fixedly connected to the drainage net core material 115 and located on the side of the drainage net core material 115. The reinforcing grid fabric layer 117 is fixedly connected to the fiberglass grid 116 and located on the side of the fiberglass grid 116. The double overlap of the fiberglass grid 116 and the reinforcing grid fabric layer 117 can ensure the structural strength of the rubber geotextile substrate 101. Furthermore, laying the rubber geotextile substrate 101 at road cracks can effectively prevent rainwater from seeping into the road base layer and causing further road damage. Moreover, the fiberglass grid 116 can enhance the tensile strength of the geotextile.
[0025] In addition, the anti-abrasion surface layer 118 is fixedly connected to the reinforcing grid fabric layer 117 and is located on one side of the reinforcing grid fabric layer 117. Furthermore, an anti-abrasion surface layer 118 is fixed on the surface of the reinforcing grid fabric layer 117. The high abrasion resistance of the anti-abrasion surface layer 118 prevents damage to the skin, thus preventing damage from the damaged point.
[0026] When using this utility model, the hot-melt pads 103 are fixed at both ends of the rubber geotextile substrate 101 to strengthen the connection between the rubber geotextile substrate 101 and the waterproof layer 104. The joint has high strength and durability, adapting to long-term loads and harsh environments. The hot-melt joint ensures the integrity of the seepage prevention system and avoids leakage. When the side of the geotextile substrate needs to be connected, the protrusion 106 on the side mounting member 105 cooperates with the limiting groove 110 on the fixing member 107. During the connection, the connecting members 111 on both sides are squeezed to make the semi-vulcanized structure 112 contact. The surface of the rubber geotextile substrate 101 is protected by a waterproof layer 104 and a waterproof geomembrane 113, which prevents water from seeping into the soil and causing insufficient bearing capacity of the foundation. When used in conjunction with the existing waterproof layer 104 and drainage system, the drainage effect can be improved and the construction cost can be reduced. The connection is sealed by the connecting member 108 and the connection is strengthened. The fiberglass grid 116 and the drainage net core material 115 enhance the tensile strength of the geotextile. This solves the problem of poor sealing at the overlap of existing impermeable geotextiles, which easily leads to water seepage and affects the stability of the soil.
[0027] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.
Claims
1. A geotextile for preventing water seepage after overlapping, comprising a rubber geotextile substrate, characterized in that, It also includes waterproof components; The waterproof component includes two hot melt pads, two waterproof layers, mounting components, protrusions, fixing components, two connecting components, and waterproof components; Two hot-melt pads are fixedly connected to the rubber geotextile substrate and are located at both ends of the rubber geotextile substrate. Two waterproof layers are fixedly connected to the hot-melt pads and are located on both sides of the hot-melt pads. The mounting component is fixedly connected to the rubber geotextile substrate and is located on one side of the rubber geotextile substrate. The protrusion is fixedly connected to the mounting component and is located on one side of the mounting component. The fixing component is fixedly connected to the rubber geotextile substrate and is located on the other side of the rubber geotextile substrate. The fixing component has a limiting groove located on one side of the fixing component. Two connecting components are respectively disposed on the side of the rubber geotextile substrate. Two waterproof components are respectively located on both sides of the waterproof layer.
2. The geotextile for preventing water seepage after overlapping as described in claim 1, characterized in that, The connecting component includes a connector and a semi-vulcanized structure. The connector is slidably connected to the rubber geotextile substrate and is located on one side of the rubber geotextile substrate. The semi-vulcanized structure is fixedly connected to the connector and is located on one side of the rubber geotextile substrate.
3. The geotextile for preventing water seepage after overlapping as described in claim 1, characterized in that, The waterproof component includes a waterproof geomembrane, a geotextile filter material, and a drainage net core material. The waterproof geomembrane is fixedly connected to the waterproof layer and located on one side of the waterproof layer. The geotextile filter material is fixedly connected to the waterproof geomembrane and located on one side of the waterproof geomembrane. The drainage net core material is fixedly connected to the geotextile filter material and located on one side of the geotextile filter material.
4. The geotextile for preventing water seepage after overlapping as described in claim 3, characterized in that, The waterproof component also includes a fiberglass grid and a reinforcing grid fabric layer. The fiberglass grid is fixedly connected to the drainage net core material and is located on the side of the drainage net core material. The reinforcing grid fabric layer is fixedly connected to the fiberglass grid and is located on the side of the fiberglass grid.
5. A geotextile for preventing water seepage after overlapping, as described in claim 4, characterized in that, The waterproof component also includes an abrasion-resistant surface layer, which is fixedly connected to the reinforcing grid fabric layer and located on one side of the reinforcing grid fabric layer.