Conveniently connected geomembrane

Abstract

The utility model belongs to geosynthetic material technical field, concretely relates to a composite geomembrane convenient to connect, including composite soil membrane main part, composite soil membrane main part is formed by the composite of anti -infiltration base material layer and protective fabric layer, and the anti -infiltration base material layer is polyethylene material, when using composite soil membrane main part, the anti -infiltration base material layer is located between the contact surface and protective fabric layer, and multiple first holes are set up in the both sides of anti -infiltration base material layer and protective fabric layer. The utility model, without the aid of tools and many people cooperate, the pre -fixing of two section composite soil membrane main part is conveniently completed, even in the uneven area of wind or slope outside, also can avoid two section composite soil membrane main part deviation separation, ensure that the connection is still stable and convenient under complex scene, in addition, it not only can realize the convenient connection of two section composite soil membrane main part end, but also can complete the convenient connection of side part, all -round simplification two section composite soil membrane main part's connection process, effectively promotes construction efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of geosynthetic materials technology, specifically relating to a composite geomembrane that is easy to connect. Background Technology

[0002] Composite geomembranes are commonly used seepage control materials in engineering projects. Due to the typically large construction area, multiple sections of geomembrane need to be spliced ​​together in practical applications. Currently, the mainstream splicing method is heat sealing welding, which fuses two sections of geomembrane using heat sealing equipment. The quality of the connection at the splice directly determines the seepage control effect and structural stability of the entire project. However, the temporary fixation of existing composite geomembranes before heat sealing often relies on clamping, compaction with heavy objects, or manual support to achieve pre-fixation between the two ends of the membrane. This process not only requires carrying additional auxiliary tools such as clamps and blocks (especially in remote construction sites or complex terrain, the transportation and storage of tools increase the construction burden), but also requires the cooperation of multiple people - usually at least 2-3 people to divide the work, one person is responsible for aligning the connection ends of the two geomembrane sections, one person fixes them simultaneously, and another person prepares the heat sealing equipment. This results in a high proportion of time spent in the construction preparation stage, which greatly extends the overall construction cycle. At the same time, the purchase, maintenance and labor costs of auxiliary tools significantly increase the overall investment of the project. Moreover, the coordination of multiple people is prone to deviations in pre-fixing alignment due to inconsistent operating rhythms, which may cause hidden dangers to the quality of subsequent heat sealing welding. Utility Model Content

[0003] The purpose of this invention is to provide a composite geomembrane that is easy to connect, enabling the pre-fixation of two sections of the composite geomembrane without the need for auxiliary tools or the collaboration of multiple people, thus effectively improving construction efficiency.

[0004] The specific technical solution adopted by this utility model is as follows: A composite geomembrane that is easy to connect includes a composite geomembrane body, which is composed of an impermeable substrate layer and a protective fabric layer. The impermeable substrate layer is made of polyethylene. When using the composite geomembrane body, the impermeable substrate layer is located between the contact surface and the protective fabric layer. Multiple first holes are opened on both sides of the impermeable substrate layer and the protective fabric layer, and the center of the first hole on the impermeable substrate layer is aligned with the center of the first hole on the protective fabric layer. A first waterproof adhesive sheet is pasted above the first hole on the impermeable substrate layer, and a first protective film is provided on the first waterproof adhesive sheet and inside the first hole.

[0005] Multiple second holes are opened on both sides of the impermeable substrate layer and the protective fabric layer. Multiple second holes on the same side are respectively located between two adjacent first holes on the same side. A second waterproof adhesive sheet is adhered below the second hole. A second protective membrane is provided on the second waterproof adhesive sheet and inside the second hole. The second hole has the same diameter as the first hole. Both the first protective membrane and the second protective membrane are circular.

[0006] Both the first and second waterproof adhesive sheets are rectangular. The length and width of the first waterproof adhesive sheet are both greater than the diameter of the first hole, and the length and width of the second waterproof adhesive sheet are both greater than the diameter of the second hole.

[0007] The technical effects achieved by this utility model are as follows: This invention eliminates the need for auxiliary tools and multiple personnel to facilitate the pre-fixation of two composite soil membrane sections. Even in windy or uneven outdoor areas with slopes, it prevents the two sections from shifting or separating, ensuring a stable and convenient connection even in complex scenarios. Furthermore, it not only enables convenient connection at the ends of the two composite soil membrane sections but also facilitates convenient connection at the sides, comprehensively simplifying the connection process and effectively improving construction efficiency. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of this utility model; Figure 3 This is a schematic diagram of the structure of the first waterproof adhesive sheet in this utility model.

[0009] The attached diagram lists the components represented by each number as follows: 1. Composite soil membrane main body; 2. Impermeable substrate layer; 3. Protective fabric layer; 4. First hole; 5. First waterproof adhesive sheet; 6. Second waterproof adhesive sheet; 7. First protective membrane; 8. Second protective membrane; 9. Second hole. Detailed Implementation

[0010] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model. Example

[0011] like Figure 1-3As shown, a composite geomembrane that is easy to connect includes a composite geomembrane body 1. The composite geomembrane body 1 adopts a layered composite structure design, which is formed by tightly bonding an impermeable substrate layer 2 and a protective fabric layer 3 through a professional hot-pressing process, so that the two layers of materials form a stable bonding surface. The impermeable substrate layer 2 is preferably made of high-density polyethylene, which has an extremely low permeability coefficient and can effectively block the penetration of media such as water, sewage, and chemical solutions. At the same time, it also has excellent chemical corrosion resistance, aging resistance and impact resistance, and can adapt to the complex environment under different engineering scenarios, such as seepage prevention of water conservancy dams, seepage prevention of landfills, and water body maintenance of artificial lakes. The protective fabric layer 3 is made of polyester staple fiber needle-punched nonwoven fabric, which has high tensile strength and provides all-round protection for the impermeable substrate layer 2. It enhances the overall tensile strength of the composite soil membrane body 1 and prevents the composite soil membrane body 1 from breaking due to excessive force during the laying and tensioning process. It can effectively isolate the impermeable substrate layer 2 from external friction damage. See attached document Figure 1 and attached Figure 2 To achieve a convenient and stable connection, multiple first holes 4 are evenly opened on both sides of the edge area of ​​the waterproof substrate layer 2 and the protective fabric layer 3, and the center positions of the first holes 4 on the waterproof substrate layer 2 and the protective fabric layer 3 are completely aligned to ensure precise alignment during connection. Meanwhile, above each first hole 4 on the impermeable substrate layer 2, a first waterproof adhesive sheet 5 is pasted. The first waterproof adhesive sheet 5 is a special geotextile tape with high adhesion and high waterproof performance. Its bonding performance can adapt to complex outdoor environments such as high and low temperatures and humidity. It also has excellent compatibility with high-density polyethylene and polyester staple fiber nonwoven fabric, and can be tightly bonded without falling off. When using: According to the actual project laying length requirements, use a special cutting tool to accurately cut the required length of the composite soil membrane body 1 along the horizontal or vertical direction. During the cutting process, it is necessary to ensure that the cut is flat and avoid rough edges, tears, etc., to prevent affecting the subsequent connection effect. Then, stack the connecting ends or connecting sides of the two composite soil membrane bodies 1 to be connected, so that one composite soil membrane body 1 is on top and the other composite soil membrane body 1 is on the bottom. At this time, the first waterproof adhesive sheet 5 on the top of the upper composite soil membrane body 1 will naturally correspond to the first waterproof adhesive sheet 5 on the top of the lower composite soil membrane body 1. Press the first waterproof adhesive sheet 5 on one of the composite soil membrane bodies 1. At this time, the first waterproof adhesive sheet 5 on one of the composite soil membrane bodies 1 will be bonded to the first waterproof adhesive sheet 5 on the other composite soil membrane body 1 through the first hole 4. The two composite soil membrane bodies 1 quickly achieve preliminary bonding and positioning without the need for additional clamps, weights, or other auxiliary tools, so that the two composite soil membrane bodies 1 can quickly and stably complete the preliminary pre-fixation. After initial positioning is completed, the heat sealing operation can be carried out. Since the two sections of geomembrane have been stably bonded by the first waterproof bonding sheet 5, even in windy outdoor environments or in situations where the laying area has slopes or unevenness, the two composite geomembrane main bodies 1 will not experience problems such as displacement or separation. The heat sealing equipment can directly operate at a uniform speed along the connection area, further fusing the impermeable substrate layer 2 and the protective fabric layer 3 to form a joint that combines waterproofness and strength, greatly improving connection efficiency and quality. Example

[0012] See attached document Figure 1 and attached Figure 2 This embodiment is an improvement on the basis of embodiment 1. The only difference between this embodiment and embodiment 1 is that: a reinforcing connection component is also provided on the composite soil membrane body 1. The reinforcing connection component includes multiple second holes 9 opened on the outer side of the impermeable substrate layer 2 and the protective fabric layer 3. Multiple second holes 9 on the same side are located in the middle of two adjacent first holes 4 on the same side. A second waterproof adhesive sheet 6 is adhered below the second hole 9. When using: First, stack the connecting ends or connecting sides of the two composite soil membrane bodies 1 to be connected, so that one composite soil membrane body 1 is on top and the other composite soil membrane body 1 is on the bottom; Subsequently, the second hole 9 on one section of the composite soil membrane body 1 is aligned with the first hole 4 on the other section of the composite soil membrane body 1 until their centers are completely aligned. It is necessary to ensure that the centers of the first hole 4 and the second hole 9 on each of the two sections of the composite soil membrane body 1 also coincide. At this point, the corresponding first waterproof adhesive sheet 5 and the second hole 9 will make contact through the aligned area of ​​the first hole 4, thus adhering to each other. Compared to the method in Example 1 where one first waterproof adhesive sheet 5 is adhered to another, the mutual adhesion between the first waterproof adhesive sheet 5 and the second hole 9 significantly improves the adhesion strength, ultimately enabling the two sections of the composite soil membrane body 1 to quickly and stably complete the initial pre-fixation. Example

[0013] See attached document Figure 2 and attached Figure 3 This embodiment is an improvement on embodiment 2. The only difference between this embodiment and embodiment 2 is that a first protective film 7 is provided on the first waterproof adhesive sheet 5 and inside the first hole 4, and a second protective film 8 is provided on the second waterproof adhesive sheet 6 and inside the second hole 9.

[0014] The first protective film 7 and the second protective film 8 form a protective layer on the adhesive on the first waterproof adhesive sheet 5 and the second waterproof adhesive sheet 6, which can effectively block dust, water stains and other impurities from adhering to the adhesive surface, thereby avoiding impurities from affecting the bonding effect of the first waterproof adhesive sheet 5 and the second hole 9, and further ensuring the stability of the pre-fixed connection when the two sections of the composite soil membrane body 1 are connected. When using, simply tear off the first protective film 7. In the above: the first waterproof adhesive sheet 5 and the second waterproof adhesive sheet 6 are made of modified bitumen-based adhesive containing SBS or SBR elastomer modifier. The modified bitumen-based adhesive has high viscosity and can be tightly bonded to the smooth surface of the impermeable substrate layer 2 and the fiber pores of the protective fabric layer 3. At the same time, it can achieve a firm bond between the first waterproof adhesive sheet 5 and the second waterproof adhesive sheet 6, and avoid the two sections of the composite soil membrane body 1 from shifting due to insufficient bonding force after pre-fixing. Both the first waterproof adhesive sheet 5 and the second waterproof adhesive sheet 6 are rectangular sheet structures. Rectangular structures have the natural advantage of being easy to cut. In the production and processing of the first waterproof adhesive sheet 5 and the second waterproof adhesive sheet 6, there is no need to customize special molds for irregular structures such as circles and polygons, which greatly shortens the processing cycle. At the same time, rectangular cutting can maximize the use of raw materials, reduce waste of scrap materials, reduce the manufacturing cost of unit products, and improve production economy. The length and width of the first waterproof adhesive sheet 5 are both greater than the diameter of the first hole 4, and the length and width of the second waterproof adhesive sheet 6 are both greater than the diameter of the second hole 9, so that the coverage area of ​​the first waterproof adhesive sheet 5 can completely include the first hole 4 and the coverage area of ​​the second waterproof adhesive sheet 6 can completely include the second hole 9, avoiding insufficient bonding area due to incomplete coverage and improving the bonding effect. The first protective film 7 and the second protective film 8 are both circular, and the diameters of the first hole 4 and the second hole 9, the second hole 9 and the second protective film 8, and the first protective film 7 and the second protective film 8 are all the same, ensuring that there are no dead angles when protecting the second waterproof adhesive sheet 6 and the first protective film 7, thus improving the reliability of protection. In summary, this utility model eliminates the need for auxiliary tools and multiple personnel to facilitate the pre-fixation of the two composite soil membrane bodies 1. Even in windy or uneven outdoor areas with slopes, it can prevent the two composite soil membrane bodies 1 from shifting or separating, ensuring a stable and convenient connection even in complex scenarios. Furthermore, it not only enables convenient connection at the ends of the two composite soil membrane bodies 1 but also facilitates convenient connection on the sides, comprehensively simplifying the connection process of the two composite soil membrane bodies 1 and effectively improving construction efficiency.

[0015] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A composite geomembrane that is easy to connect, comprising a composite geomembrane body (1), characterized in that: The composite soil membrane body (1) is composed of an impermeable substrate layer (2) and a protective fabric layer (3). Multiple first holes (4) are opened on both sides of the impermeable substrate layer (2) and the protective fabric layer (3). The first holes (4) on the impermeable substrate layer (2) and the first holes (4) on the protective fabric layer (3) are aligned. A first waterproof adhesive sheet (5) is pasted above the first holes (4) on the impermeable substrate layer (2).

2. The composite geomembrane for easy connection according to claim 1, characterized in that: The impermeable substrate layer (2) is made of polyethylene. When the composite soil membrane body (1) is used, the impermeable substrate layer (2) is located between the contact surface and the protective fabric layer (3).

3. The composite geomembrane for easy connection according to claim 1, characterized in that: Multiple second holes (9) are opened on both sides of the impermeable substrate layer (2) and the protective fabric layer (3). Multiple second holes (9) on the same side are located between two adjacent first holes (4) on the same side. A second waterproof adhesive sheet (6) is attached below the second hole (9).

4. The composite geomembrane for easy connection according to claim 3, characterized in that: A first protective film (7) is provided on the first waterproof adhesive sheet (5) and inside the first hole (4), and a second protective film (8) is provided on the second waterproof adhesive sheet (6) and inside the second hole (9).

5. A composite geomembrane for easy connection according to claim 4, characterized in that: The second hole (9) has the same diameter as the first hole (4), and both the first protective film (7) and the second protective film (8) are circular.

6. The composite geomembrane for easy connection according to claim 3, characterized in that: The first waterproof adhesive sheet (5) and the second waterproof adhesive sheet (6) are both rectangular. The length and width of the first waterproof adhesive sheet (5) are both greater than the diameter of the first hole (4), and the length and width of the second waterproof adhesive sheet (6) are both greater than the diameter of the second hole (9).

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