Composite geomembrane with one-way anti-permeation function

Abstract

The utility model belongs to the technical field of composite geomembranes, and discloses a composite geomembrane with a one-way anti-seepage function, which comprises a geomembrane body, reinforcing ribs are fixedly mounted on two sides of the geomembrane body, the geomembrane body is composed of three layers of structures, namely a non-woven fabric layer, an anti-seepage layer and a supporting layer from top to bottom in sequence, wherein one end of one reinforcing rib is provided with a plurality of clamping grooves which are distributed at equal intervals, the other end of the other reinforcing rib is fixedly connected with a plurality of clamping blocks which are used in cooperation with the clamping grooves, and the non-woven fabric layer is made of filament polyester non-woven fabric materials. According to the composite geomembrane, the adjacent geomembranes can be tightly and stably spliced together under the action of elastic restoring force of the elastic pieces, and only glue needs to be smeared after the geomembranes are successfully spliced, so that the construction efficiency is greatly improved, and the integral one-way anti-permeation performance of the composite geomembrane is remarkably enhanced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to composite geomembrane technical field, specifically is a kind of composite geomembrane with one-way anti-permeation. BACKGROUND

[0002] In today's various infrastructure construction and environmental protection engineering, as a kind of key anti-seepage material, the application scene of geomembrane is extremely wide. From dam, reservoir, channel etc. in water conservancy engineering, to landfill, sewage treatment tank in municipal engineering, to irrigation pond in agricultural field and various liquid storage tanks in industrial production, the performance of geomembrane is highly dependent on to ensure the effective isolation and anti-seepage of liquid, prevent pollution spread and resource waste, and protect the safe and stable operation of engineering and the ecological balance of surrounding environment.

[0003] Meanwhile, the patent specification with the application number CN203741806U discloses a composite geomembrane, "including geotextile and geomembrane, both sides of geomembrane are provided with geotextile, the width of geomembrane is less than the width of geotextile, both sides of geotextile and geomembrane are separated, form gap, can realize multiple composite geomembrane lap joint, hot melt physical adhesive layer is arranged between geotextile and geomembrane, the composite geomembrane obtained by the utility model has high lap joint degree, convenient construction and good overall toughness, long service life";

[0004] The existing composite geomembrane has many problems in use, and most of the splicing methods are simple stitching. This splicing method is complex and inefficient, and the stitching part is easy to have gap, which leads to unstable anti-seepage performance. Secondly, the structure design of conventional geomembrane lacks targeted optimization, and the surface does not have effective water guide structure. When encountering accumulated water, water will accumulate on the surface of geomembrane, increase the water pressure borne by geomembrane, accelerate the aging and damage of geomembrane, and also increase the leakage risk.

[0005] Therefore, a composite geomembrane with one-way anti-permeation is proposed for the above problems. UTILITY MODEL CONTENT

[0006] To solve the problems in the above background art, the utility model provides a composite geomembrane with one-way anti-permeation, which greatly improves the construction efficiency, thereby significantly enhances the one-way anti-permeation performance of the composite geomembrane as a whole, effectively reduces the additional water pressure generated by accumulated water on the geomembrane, reduces the aging and damage risk of the geomembrane caused by excessive water pressure, and also greatly reduces the possibility of leakage.

[0007] To achieve the above object, the utility model provides the following technical scheme: A composite geomembrane with one-way anti-permeation, including geomembrane body, the both sides of geomembrane body are fixedly installed with reinforcing rib, the geomembrane body is composed of three layers of structure, from top to bottom is non - woven fabric layer, anti - infiltration layer and support layer, one end of one reinforcing rib is provided with a plurality of spacing distribution's clamping groove, the other end of another reinforcing rib is fixedly connected with the clamping block used in cooperation with a plurality of clamping grooves.

[0008] Preferably, the non - woven fabric layer adopts long filament polyester non - woven fabric material, the anti - infiltration layer is polyethylene film layer, the anti - infiltration layer has very low water permeability, is the key layer of realizing one - way anti - permeation, the support layer is made of woven geotextile material, is used for enhancing the overall strength and wear resistance of geomembrane.

[0009] Preferably, the both sides inner walls of clamping groove are fixedly connected with two hemispherical elastic members, and the both ends of clamping block are provided with grooves matched with the two elastic members.

[0010] Preferably, the bottom end of support layer is provided with an anti - skid layer, and the both ends of anti - skid layer are fixedly connected with the corresponding ends of two reinforcing ribs.

[0011] Preferably, the top end of non - woven fabric layer and two reinforcing ribs is provided with a buffer layer, the top end of buffer layer is coated with an anti - ultraviolet coating, and the top end of buffer layer is provided with a plurality of water guide grooves in communication with each other.

[0012] Preferably, the plurality of water guide grooves are distributed in a rectangular array, the cross sections of the plurality of water guide grooves are semicircular, and the inner surfaces of the plurality of water guide grooves are smooth.

[0013] Compared with the prior art, the utility model has the advantages as follows:

[0014] 1、The utility model discloses a clamping groove and clamping block are set up, under the elastic restoring force of elastic member, make adjacent geomembrane can be closely, stably spliced together, after splicing successfully, only need to smear glue water, great improvement construction efficiency has enhanced the one - way anti - permeation of composite geomembrane whole significantly.

[0015] 2、The utility model discloses a water guide groove is set up, under the synergies of water gravity and surface tension, can guide the water that the geomembrane surface gathers and removes, this effectively reduces the additional water pressure that the water gathers to geomembrane, reduces the geomembrane aging and damage risk that the water pressure is too big causes, also greatly reduces the leakage possibility. ACCURACY OF DRAWINGS

[0016] Figure 1 It is the whole structure schematic diagram of the utility model.

[0017] Figure 2 For the utility model Figure 1 The structure of A in the middle is enlarged.

[0018] Figure 3 For the utility model Figure 1 The structure of B in the middle is enlarged.

[0019] Figure 4 For the overall structure of the utility model is shown in the schematic diagram.

[0020] Figure 5 For the utility model Figure 4 The structure of C in the middle is enlarged.

[0021] In the figure: 1, geomembrane body; 2, reinforcing rib; 3, buffer layer; 4, non-woven fabric layer; 5, impermeable layer; 6, support layer; 7, anti-skid layer; 8, water guide groove; 31, clamping groove; 32, elastic member; 311, clamping block; 321, groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] As Figures 1 to 5 Indicated, the utility model provides a kind of composite geomembrane with one-way anti-permeation, including geomembrane body 1, reinforcing rib 2 is fixedly installed in geomembrane body 1 both sides, reinforcing rib 2 can enhance the edge strength of geomembrane body 1, prevent the edge from being damaged in construction and use process, geomembrane body 1 is made of three-layer structure, from top to bottom in turn for non-woven fabric layer 4, impermeable layer 5 and support layer 6, non-woven fabric layer 4 can block the particle such as outside silt, impurity and enter geomembrane interior, protect impermeable layer 5 from being scratched or blocked, prolong the service life of geomembrane;Impermeable layer 5 as the key layer for realizing one-way anti-permeation, with its extremely low water permeability, effectively prevent the penetration of liquid, guarantee the anti-seepage performance of geomembrane;Support layer 6 is made of woven geotextile material, can enhance the overall strength and wear resistance of geomembrane, so that it is not easy to deform and damage when bearing pressure, friction and other external forces, ensure the stability and reliability of geomembrane under various working conditions, one end of one reinforcing rib 2 is provided with several clamping grooves 31 that are distributed at equal intervals, and the other end of the other reinforcing rib 2 is fixedly connected with clamping block 311 used in cooperation with several clamping grooves 31.

[0024] Specifically, the non-woven fabric layer 4 is made of filament polyester non-woven fabric material, the impermeable layer 5 is a polyethylene film layer, the impermeable layer 5 has very low water permeability and is a key layer for realizing one-way impermeability, and the support layer 6 is made of woven geotextile material and is used to enhance the overall strength and wear resistance of the geomembrane, facilitating the splicing operation of the geomembrane. Compared with the traditional splicing method, no complex tools are needed, the overall impermeability of the geomembrane is ensured, and the construction cost and later maintenance cost are reduced.

[0025] As shown in Figures 1 to 5 The two ends of the clamping block 311 are provided with grooves 321 matched with the two elastic members 32, the design of the semispherical elastic members 32 and the grooves 321 makes the clamping more firm and reliable, the elastic restoring force of the elastic members 32 can provide continuous fastening force, preventing the clamping block 311 from loosening or falling out due to external force during use, and further enhancing the stability and impermeability of the splicing position.

[0026] Further, the bottom end of the support layer 6 is provided with an anti-skid layer 7, the two ends of the anti-skid layer 7 are fixedly connected with the corresponding ends of the two reinforcing ribs 2, the anti-skid layer 7 can increase the friction between the geomembrane and the laying foundation surface, prevent the geomembrane from sliding or displacing due to stress during use, and ensure the stability of the laying position of the geomembrane, which is conducive to its normal impermeability and protection function.

[0027] As shown in Figures 1 to 5 The non-woven fabric layer 4 and the top ends of the two reinforcing ribs 2 are provided with a buffer layer 3, the buffer layer 3 can reduce the damage of external impact force to the geomembrane, protect the internal layers, prolong the service life of the geomembrane, the top end of the buffer layer 3 is coated with an anti-ultraviolet coating, which can effectively block the radiation of ultraviolet rays to the geomembrane, prevent the material from aging and becoming brittle, the top end of the buffer layer 3 is provided with a plurality of water guide grooves 8 in communication with each other, the water guide grooves 8 can timely drain the accumulated water on the surface of the geomembrane, avoid water pressure damage to the geomembrane, and reduce the risk of leakage.

[0028] It is worth noting that the plurality of water guide grooves 8 are arranged in a rectangular array, the rectangular array of the water guide grooves 8 can uniformly collect and guide the accumulated water on the surface of the geomembrane, ensure the drainage effect of the entire geomembrane surface, and the cross sections of the plurality of water guide grooves 8 are semicircular, the design of the semicircular cross section is conducive to the rapid flow of water flow, reduces the water flow resistance, improves the drainage efficiency, and the inner surfaces of the plurality of water guide grooves 8 are smooth, the smooth treatment of the inner surfaces of the water guide grooves 8 further reduces the friction coefficient of the water flow, so that the accumulated water can be drained more smoothly, and the drainage performance of the geomembrane is enhanced.

[0029] The working principle and process are as follows: when splicing, the clamping block 311 on one piece of the geomembrane reinforcing rib 2 is aligned with the clamping groove 31 on the corresponding reinforcing rib 2 of another piece of the geomembrane, and the clamping block 311 is inserted into the clamping groove 31, the hemispherical elastic piece 32 in the clamping groove 31 is compressed under force, and when the clamping block 311 is completely in place, the elastic piece 32 is clamped into the groove 321 of the clamping block 311 by virtue of the elastic restoring force, realizing the close and stable splicing of adjacent geomembranes, forming a reliable one-way impermeable barrier of the impermeable layer 5, preventing the non-woven fabric layer 4 from damaging the impermeable layer 5, and the support layer 6 provides strength support for the whole structure, ensuring that the impermeable layer 5 maintains stable impermeability under various pressures, the existence of the buffer layer 3 can effectively buffer external impact force and reduce damage to the internal structure, the ultraviolet-resistant coating can reflect and absorb ultraviolet rays, preventing the geomembrane from aging and becoming brittle due to ultraviolet radiation, and prolonging the service life, when water accumulates on the surface of the geomembrane, the water will flow into the water guide groove 8 at the top end of the buffer layer 3 under the action of gravity, the rectangular array distribution of the water guide groove 8 ensures the comprehensiveness of water collection, the semicircular cross section and smooth inner surface design make the water flow resistance extremely small, and the water can quickly and smoothly flow out through the water guide groove 8, avoiding the damage of water pressure generated by the accumulated water to the geomembrane and maintaining the normal performance of the geomembrane, so that the whole composite geomembrane can stably and efficiently play the comprehensive functions of one-way impermeability, protection and drainage under different working conditions.

[0030] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Moreover, the terms "comprising", "containing" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or apparatus.

[0031] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A composite geomembrane with unidirectional impermeability, comprising a geomembrane body (1), characterized in that: The reinforcing rib (2) is arranged on both sides of the geomembrane body (1), the geomembrane body (1) is composed of three layers from top to bottom, the non-woven fabric layer (4), the anti-seepage layer (5) and the supporting layer (6), a plurality of clamping grooves (31) are arranged on one end of the reinforcing rib (2), and a clamping block (311) matched with the clamping grooves (31) is arranged on the other end of the reinforcing rib (2).

2. The composite geomembrane with unidirectional impermeability according to claim 1, characterized in that: The non-woven fabric layer (4) is made of long filament polyester non-woven fabric material, the anti-seepage layer (5) is a polyethylene film layer, the anti-seepage layer (5) has very low water permeability and is a key layer for realizing one-way anti-seepage, and the supporting layer (6) is made of woven geotextile material and is used for enhancing the overall strength and wear resistance of the geomembrane.

3. The composite geomembrane with unidirectional impermeability according to claim 1, characterized in that: The clamping grooves (31) are arranged on both sides of the reinforcing rib (2), the clamping block (311) is arranged on the other end of the reinforcing rib (2), and the clamping grooves (31) are matched with the clamping block (311).

4. The composite geomembrane with unidirectional impermeability according to claim 2, characterized in that: The supporting layer (6) is provided with an anti-skid layer (7) at the bottom end, and the anti-skid layer (7) is fixedly connected with the corresponding end of the two reinforcing ribs (2).

5. The composite geomembrane with unidirectional impermeability according to claim 4, characterized in that: The non-woven fabric layer (4) and the top end of the two reinforcing ribs (2) are provided with a buffer layer (3) together, the top end of the buffer layer (3) is coated with an anti-ultraviolet coating, and the top end of the buffer layer (3) is provided with a plurality of water guide grooves (8) in communication.

6. The composite geomembrane with unidirectional impermeability according to claim 5, characterized in that: The water guide grooves (8) are arranged in a rectangular array, the cross sections of the water guide grooves (8) are semicircular, and the inner surfaces of the water guide grooves (8) are smooth.

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