A connection method between a geomembrane and an asphalt concrete face slab

Abstract

The present invention discloses a connection method between a geomembrane and an asphalt concrete panel, which relates to the technical field of water conservancy projects and includes: a reinforced concrete panel with a stepped upper end, and both sides of the reinforced concrete panel are made into arc-shaped structures; a geomembrane; and a bulge, which is a connected double-peak structure and is formed by arranging on a three-dimensional composite drainage net through the SR plastic waterstop material. The geomembrane is laid on the bulge, and the geomembrane located between the double peaks is fixed to the reinforced concrete panel through an anchoring unit. In this application, a geomembrane is laid on the outer side above the reinforced concrete panel, a three-dimensional composite drainage net is arranged below the geomembrane, and at least three rows of external bulges are arranged through cushion materials on the outer side of the reinforced concrete panel, so that the geomembrane presents a wavy line at the anchoring edge, which can effectively offset the clamping effect, reduce the tearing risk of the geomembrane caused by excessive restraint, and improve the anti-seepage performance.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy engineering, and specifically to a connection method between a geomembrane and an asphalt concrete panel. Background Art

[0002] With the proposal and continuous promotion of the "dual carbon" goal, the development of non - water renewable energy power generation in China has shown an extremely rapid growth trend. However, the instability of new energy sources such as wind and light has exacerbated the fluctuations in the power grid. In this process, conventional hydropower stations and pumped - storage power stations play an important role. China is also further promoting the construction of pumped - storage power stations. As an important resource for pumped - storage power stations, water resources have extremely high requirements for anti - seepage at the initial stage of power station construction. In recent years, more and more projects have adopted the form of geomembranes at the bottom of the reservoir and asphalt concrete panels on the reservoir banks for anti - seepage.

[0003] According to the conventional design, the geomembrane is generally directly anchored to the concrete panel in the form of bolt anchorage. However, the asphalt panel is relatively soft, and the geomembrane is prone to deformation. Therefore, it is difficult to achieve the designed anchoring force, and how to connect the two is a key problem in the project.

[0004] Therefore, it is necessary to design a connection method between the geomembrane and the asphalt concrete panel to solve the above - mentioned technical problems. Summary of the Invention

[0005] In view of the above problems, the present application provides a connection method between a geomembrane and an asphalt concrete panel. A geomembrane is laid on the outer side above the reinforced concrete panel, and a three - dimensional composite drainage net is arranged below the geomembrane. The joint action of the geomembrane and the three - dimensional composite drainage net provides a double anti - seepage barrier, effectively preventing water penetration and keeping the reinforced concrete panel dry. Below the three - dimensional composite drainage net is a cushion material formed by compacting fine materials with particle sizes increasing layer by layer in the seepage direction, which can evenly distribute stress, reduce local stress concentration, and improve the overall stability of the structure. At least three rows of external bulges are arranged on the outer side of the reinforced concrete panel through the cushion material, making the geomembrane present a wavy line at the anchoring edge, which can effectively offset the clamping effect, reduce the risk of tearing of the geomembrane caused by excessive restraint, and improve the anti - seepage performance.

[0006] To achieve the above object, the present invention provides the following technical solution: A connection method between a geomembrane and an asphalt concrete panel, which includes:

[0007] Reinforced concrete panel, which is arranged on the upper layer of the reservoir bank, and the upper end of the reinforced concrete panel is arranged in a stepped shape. The two sides of the reinforced concrete panel are made into arc-shaped structures. The reinforced concrete panel on the higher side is used to connect the cushion material, and the reinforced concrete panel on the lower side is used to connect the asphalt concrete panel. And at least three rows of external bulges are arranged outside the reinforced concrete panel through the cushion material. An SR sliding layer is filled between the reinforced concrete panel and the asphalt concrete panel. And a groove is opened at the corner position on the lower side of the reinforced concrete panel, and the groove is filled with SR plastic water-stop material;

[0008] Geomembrane, one side of which is laid on the three-dimensional composite drainage net. The cushion material is below the three-dimensional composite drainage net, and the other side of the geomembrane extends and adheres to the asphalt concrete panel side; and

[0009] Bulge, which is a connected double-peak structure, and is formed by arranging on the three-dimensional composite drainage net through the SR plastic water-stop material. The geomembrane is laid on the bulge, and the geomembrane between the double peaks is fixed to the reinforced concrete panel through the anchoring unit.

[0010] Further, as a preference, one end of the asphalt concrete panel abuts against the stepped surface of the reinforced concrete panel, and the other end of the asphalt concrete panel sits on the upper end of the wedge-shaped body of the cushion layer.

[0011] Further, as a preference, the asphalt concrete panel is divided into a mastic sealing layer, an anti-seepage layer and a leveling and bonding layer from top to bottom, and polyester grids are arranged in the leveling and bonding layer.

[0012] Further, as a preference, butyl raw tape is used for bonding between the geomembrane and the asphalt concrete panel, and a porous base fabric with a pasting width of at least 5 cm is pasted at the edge, and is sealed with HK sealer I.

[0013] Further, as a preference, a plurality of sandbags and precast blocks are evenly pressed and covered on the geomembrane at the upper end of the asphalt concrete panel.

[0014] Further, as a preference, the anchoring unit includes anchoring holes correspondingly opened on the reinforced concrete panel and the bulge between the double peaks, and stainless steel anchoring screws are arranged in the anchoring holes. Stainless steel flat steel is arranged on the bulge at the upper end of the anchoring hole. Gaskets are arranged on the stainless steel flat steel, and nuts are arranged on the gaskets. The nuts are threadedly connected with the stainless steel anchoring screws. The SR plastic water-stop material is filled between the stainless steel flat steel and the bulge, and HK sealer II is coated on the bonding places between the stainless steel flat steel and the bulge and between the nuts and the gaskets.

[0015] Further, preferably, the three-dimensional composite drainage net has a structure of three layers of composite geotextile, drainage net and geotextile.

[0016] Further, preferably, the SR plastic water stop material below the stainless steel flat steel is a material of five layers of composite of SR bottom glue one, the SR sliding layer, SR anti-seepage rubber strip, SR anti-seepage protection cover sheet and SR bottom glue two from top to bottom.

[0017] Further, preferably, the sandbag has a structure in which at least 30 kg of fine sand is filled in the non-woven and spunbonded composite cloth.

[0018] Compared with the prior art, the present invention provides a connection method between a geomembrane and an asphalt concrete panel, and has the following beneficial effects:

[0019] 1. In the present invention, a geomembrane is laid on the outer side above the reinforced concrete panel, and a three-dimensional composite drainage net is provided below the geomembrane. The geomembrane and the three-dimensional composite drainage net act together to provide a double anti-seepage barrier, effectively preventing water penetration and keeping the reinforced concrete panel dry. Below the three-dimensional composite drainage net is a cushion material formed by compacting fine materials with particle sizes increasing layer by layer in the seepage direction, which can evenly distribute stress, reduce local stress concentration, improve the overall stability of the structure, and at least three rows of external bulges are arranged through the cushion material on the outer side of the reinforced concrete panel, so that the geomembrane presents a wavy line at the anchoring edge, which can effectively offset the clamping effect, reduce the risk of tearing of the geomembrane caused by excessive restraint, and improve the anti-seepage performance.

[0020] 2. In the present invention, the double-peak structure of the bulge is fixed to the reinforced concrete panel through the anchoring unit, and the SR plastic water stop material and HK edge-sealing agent two are filled between the stainless steel flat steel and the bulge. On the one hand, the fixing method is simple and efficient, ensuring the reliability of the connection between the geomembrane and the reinforced concrete panel. On the other hand, the bulge, the SR plastic water stop material and HK edge-sealing agent two can play a sealing role to prevent water from seeping through the connection part, enhancing the waterproof effect.

[0021] 3. In the present invention, an SR sliding layer is added between the reinforced concrete panel and the asphalt concrete panel, and a groove is opened at the lower end of the stepped side of the reinforced concrete panel, and the SR plastic water stop material is filled in the groove, which can effectively ensure the tightness of the connection between the two panels. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings are used to provide a further understanding of the present application, and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application, and do not constitute a limitation to the present application;

[0023] Figure 1It is a construction schematic diagram of a connection method between a geomembrane and an asphalt concrete panel;

[0024] Figure 2 It is a cross-sectional structural schematic diagram of an anchor point in a connection method between a geomembrane and an asphalt concrete panel;

[0025] Reference numerals: 1, asphalt concrete panel; 101, mastic sealing layer; 102, anti-seepage layer; 103, leveling and bonding layer; 104, polyester grid; 2, precast block; 3, HK edge sealer I; 4, wedge-shaped body of bedding layer; 5, reinforced concrete panel; 501, groove; 6, sandbag; 7, geotextile; 8, geomembrane; 801, butyl raw tape; 802, porous base fabric; 9, bulge; 10, stainless steel flat bar; 11, anchoring unit; 1101, nut; 1102, gasket; 1103, stainless steel anchoring screw; 12, SR plastic waterstop material; 1201, SR anti-seepage protection cover sheet; 1202, SR bottom glue I; 1203, SR anti-seepage rubber strip; 1204, SR sliding layer; 1205, SR bottom glue II; 13, HK edge sealer II; 14, three-dimensional composite drainage net; 15, cushioning material; 16, external bulge. Detailed implementation manners

[0026] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below with reference to the accompanying drawings in the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art without making creative efforts based on the embodiments in the present application fall within the scope of protection of the present application.

[0027] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features; in the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0028] Please refer to Figure 1 - Figure 2 , an embodiment of the present invention provides a connection method between a geomembrane and an asphalt concrete panel, which includes:

[0029] The reinforced concrete panel 5 is arranged on the upper layer of the reservoir bank, and the upper end of the reinforced concrete panel 5 is arranged in a stepped shape. The two sides of the reinforced concrete panel 5 are made into arc-shaped structures. The reinforced concrete panel 5 on the higher side is used to connect the cushion material 15, and the reinforced concrete panel 5 on the lower side is used to connect the asphalt concrete panel 1. At least three rows of external bulges 16 are arranged outside the reinforced concrete panel 5 through the cushion material 15. An SR sliding layer 1204 is filled between the reinforced concrete panel 5 and the asphalt concrete panel 1. A groove 501 is opened at the corner position on the lower side of the reinforced concrete panel 5, and the groove 501 is filled with an SR plastic water stop material 12, which can effectively ensure the tightness at the joint of the two panels;

[0030] The geomembrane 8 has one side laid on the three-dimensional composite drainage net 14. The three-dimensional composite drainage net 14 is below the cushion material 15, and the other side of the geomembrane 8 extends and adheres to the side of the asphalt concrete panel 1; and

[0031] The bulge 9 is a connected double-peak structure, which is formed by arranging on the three-dimensional composite drainage net 14 through the SR plastic water stop material 12. The geomembrane 8 is laid on the bulge 9, and the geomembrane 8 between the double peaks is fixed to the reinforced concrete panel 5 through the anchoring unit 11.

[0032] Based on the above technical solution, holes are drilled on the reinforced concrete panel 5 every 30 cm along the periphery of the reservoir bank. The hole depth is preferably 10 - 15 cm. Chemical agents and screws are added to fix them, and the spilled chemical agents are cleaned up in time. When laying, the reinforced concrete panel 5 should be dry and clean. A cushion material 15 made of fine materials with gradually decreasing particle size in the seepage direction is laid on the stepped upper side of the reinforced concrete panel 5 and rolled into shape. Then, a three-dimensional composite drainage net 14 is laid on the cushion material 15, and an SR sliding layer 1204 is filled on the stepped lower side of the reinforced concrete panel 5. The SR plastic water stop material 12 is filled in the groove 501. Then, the asphalt concrete panel 1 is placed on the stepped lower side of the reinforced concrete panel 5. Bulges 9 about 5 cm and 10 cm are made of the SR plastic water stop material 12 on the left and right sides of the anchoring point respectively, and the bulge 9 between the double peaks is fixed to the reinforced concrete panel 5 through the anchoring unit 11. Then, the geomembrane 8 is covered on it, and at least three rows of external bulges 16 are arranged outside the reinforced concrete panel 5 through the cushion material 15, so that the geomembrane 8 presents a wavy line at the anchoring edge, which can effectively offset the clamping effect, reduce the risk of tearing of the geomembrane 8 caused by excessive restraint, and improve the anti-seepage performance.

[0033] Based on the above technical solution, the combined action of the geomembrane 8 and the three-dimensional composite drainage net 14 provides a double anti-seepage barrier, effectively preventing water penetration and keeping the reinforced concrete panel 5 dry; the cushion material 15 can evenly distribute stress, reduce local stress concentration, and improve the overall stability of the structure.

[0034] In a possible implementation manner, one end of the asphalt concrete panel 1 abuts against the stepped surface of the reinforced concrete panel 5, and the other end of the asphalt concrete panel 1 is located at the upper end of the cushion layer wedge 4, which can effectively increase the contact surface between the asphalt concrete panel 1 and the reinforced concrete panel 5, ensuring a reliable connection between the asphalt concrete panel 1 and the reinforced concrete panel 5 through the SR slip layer 1204 and the SR plastic waterstop material 12, and effectively guaranteeing the tightness at the joint of the two panels.

[0035] In a possible implementation manner, the asphalt concrete panel 1 is divided into a mastic sealing layer 101, an anti-seepage layer 102, and a leveling and bonding layer 103 from top to bottom, and a polyester grid 104 is arranged in the leveling and bonding layer 103.

[0036] It should be explained that through the settings of the mastic sealing layer 101 and the anti-seepage layer 102, multiple waterproof barriers are formed, effectively preventing water from penetrating into the interior of the asphalt concrete panel 1, while the leveling and bonding layer 103 can evenly distribute stress, reduce stress concentration, and improve the overall stability of the structure. The arrangement of the polyester grid 104 can enhance the crack resistance of the leveling and bonding layer 103 and prevent the generation and expansion of cracks.

[0037] In a possible implementation manner, the geomembrane 8 and the asphalt concrete panel 1 are bonded using butyl mastic tape 801, and a porous base fabric 802 with a pasting width of at least 5 cm is pasted at the edge, and sealed with HK sealant 1-3. The butyl mastic tape 801 has good adhesiveness and waterproof performance, while the porous base fabric 802 can absorb excess water. The combined use of the butyl mastic tape 801 and the porous base fabric 802 provides a double sealing effect and enhances the waterproof performance.

[0038] In a possible implementation manner, a plurality of sandbags 6 and precast blocks 2 are evenly pressed on the geomembrane 8 located at the upper end of the asphalt concrete panel 1. The geomembrane 8 is pasted on the butyl mastic tape 801 and pressed tightly. Sandbags 6 are permanently pressed on the geomembrane 8 at intervals of about 1.5 m. At the edge position of the geomembrane 8, precast blocks 2 can be used for pressing or sandbags 6 can be used for seamless pressing. Pressing the sandbags 6 and the precast blocks 2 can prevent the geomembrane 8 from wrinkling during the laying process, further improving the anti-seepage performance, and can also effectively prevent the geomembrane 8 from shifting under external forces (such as wind, water flow, etc.).

[0039] In a possible implementation, the anchoring unit 11 includes anchoring holes correspondingly formed in the reinforced concrete panel 5 and the bulge 9 between the two peaks. A stainless-steel anchoring screw 1103 is installed in the anchoring holes. A stainless-steel flat steel 10 is installed on the bulge 9 at the upper end of the anchoring holes. A gasket 1102 is installed on the stainless-steel flat steel 10, and a nut 1101 is arranged on the gasket 1102. The nut 1101 is threadedly connected to the stainless-steel anchoring screw 1103. The SR plastic water-stop material 12 is filled between the stainless-steel flat steel 10 and the bulge 9, and HK edge-sealing agent II 13 is applied to the bonding joints between the stainless-steel flat steel 10 and the bulge 9 and between the nut 1101 and the gasket 1102.

[0040] Adopting the above technical solution, bulges 9 about 5 cm and 10 cm are made of SR plastic water-stop material 12 on the left and right sides of the anchoring point respectively, and the geomembrane 8 is covered thereon. The stainless-steel anchoring screw 1103 is passed through, and the stainless-steel flat steel 10 is placed. Then, the gasket 1102 is placed on the stainless-steel flat steel 10, and the nut 1101 is anchored to the stainless-steel anchoring screw 1103. The SR plastic water-stop material 12 is applied between the stainless-steel flat steel 10 and the bulge 9. Finally, HK edge-sealing agent II 13 is applied to the bonding joints between the stainless-steel flat steel 10 and the bulge 9 and between the nut 1101 and the gasket 1102.

[0041] On the basis of the above technical solution, the two-peak structure of the bulge 9 is fixed to the reinforced concrete panel 5 through the anchoring unit 11, and the SR plastic water-stop material 12 and HK edge-sealing agent II 13 are filled between the stainless-steel flat steel 10 and the bulge 9. On the one hand, the fixing method is simple and efficient, ensuring the reliability of the connection between the geomembrane 8 and the reinforced concrete panel 5. On the other hand, the bulge 9, the SR plastic water-stop material 12 and HK edge-sealing agent II 13 can play a sealing role to prevent water from seeping into the anchoring holes through the connection part, enhancing the waterproof effect.

[0042] In a possible implementation, the three-dimensional composite drainage net 14 has a three-layer composite structure of geotextile 7, drainage net and geotextile 7. The three-dimensional composite drainage net 14 in the three-layer composite structure can quickly drain the infiltrated water and improve the drainage efficiency.

[0043] In a possible implementation, the SR plastic water-stop material 12 below the stainless-steel flat steel 10 is a five-layer composite material of SR primer I 1202, SR slip layer 1204, SR anti-seepage rubber strip 1203, SR anti-seepage protection cover sheet 1201 and SR primer II 1205 from top to bottom.

[0044] Through the above technical solution, bulges 9 about 5 cm and 10 cm are made of SR plastic water-stop material 12 on the left and right sides of the anchoring point respectively. SR primer 1205 is brushed on the contact surface, an SR sliding layer 1204 is laid on the primer, and an SR anti-seepage rubber strip 1203 is set. SR primer 1202 is brushed again, and an SR anti-seepage protection cover sheet 1201 is placed thereon. The geomembrane 8 is covered on it, passes through the stainless-steel anchoring screw 1103, and the stainless-steel flat steel 10 is placed. Then, SR plastic water-stop material 12 is brushed on the stainless-steel flat steel 10 and a gasket 1102 is placed, and the nut 1101 is anchored to the stainless-steel anchoring screw 1103.

[0045] In a possible implementation manner, the sandbag 6 has a structure in which at least 30 kg of fine sand is filled in a non-woven and spunbonded composite cloth, which can closely fit the geomembrane 8 and the asphalt concrete panel 1, reduce voids, and improve the anti-seepage effect.

[0046] During specific implementation, during anchoring construction: holes are drilled every 30 cm along the reservoir bank perimeter on the reinforced concrete panel 5, the hole depth is preferably 10 - 15 cm, chemical agents and screws are added to fix them, and the overflowing chemical agents are cleaned up in a timely manner;

[0047] During the construction process: during laying, the reinforced concrete panel 5 should be dry and clean, and a cushion material 15 made of fine materials with gradually decreasing particle sizes in the seepage direction is laid and compacted on the stepped upper side of the reinforced concrete panel 5. Then, a three-dimensional composite drainage net 14 is laid on the cushion material 15, and the asphalt concrete panel 1 is placed on the stepped lower side of the reinforced concrete panel 5. Bulges 9 about 5 cm and 10 cm are made of SR plastic water-stop material 12 on the left and right sides of the anchoring point respectively. SR primer 1205 is brushed on the contact surface, an SR sliding layer 1204 is laid on the primer, and an SR anti-seepage rubber strip 1203 is set. SR primer 1202 is brushed again, and an SR anti-seepage protection cover sheet 1201 is placed thereon. The geomembrane 8 is covered on it, passes through the stainless-steel anchoring screw 1103, and the stainless-steel flat steel 10 is placed. Then, SR plastic water-stop material 12 is brushed on the stainless-steel flat steel 10 and a gasket 1102 is placed, and the nut 1101 is anchored to the stainless-steel anchoring screw 1103; the asphalt concrete panel 1 is cleaned up, and the construction working surface is kept free of dust and gravel as much as possible. An 8 m wide butyl tape 801 is laid, and after passing through the connection position of the reinforced concrete panel 5 and the asphalt concrete panel 1, it continues to cover about 6 m of the asphalt panel. The geomembrane 8 is pasted on it and pressed tightly. Sandbags 6 are permanently pressed on the geomembrane 8 at intervals of about 1.5 m. At the edge position of the geomembrane 8, precast blocks 2 can be used for pressing or sandbags 6 can be used for seamless pressing; finally, HK edge-sealing agent 2 13 is brushed at the bonding positions between the stainless-steel flat steel 10 and the bulge 9 and between the nut 1101 and the gasket 1102, and HK edge-sealing agent 1 3 is brushed at the bonding position between the geomembrane 8 and the asphalt concrete panel 1.

[0048] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention should cover within the protection scope of the present invention according to the technical solution and inventive concept of the present invention by making equivalent replacements or changes.

Claims

1. A method for connecting a geomembrane and an asphalt concrete panel, characterized in that: It includes: A reinforced concrete panel (5) is arranged on the upper layer of the reservoir bank, and the upper end of the reinforced concrete panel (5) is arranged in a stepped manner. Both sides of the reinforced concrete panel (5) are made into arc structures. The reinforced concrete panel (5) located on the higher side is used to connect to the cushion material (15), and the reinforced concrete panel (5) located on the lower side is used to connect to the asphalt concrete panel (1), and at least three rows of external bulges (16) are arranged on the outer side of the reinforced concrete panel (5) through the cushion material (15), an SR sliding layer (1204) is filled between the reinforced concrete panel (5) and the asphalt concrete panel (1), and a groove (501) is opened at the corner position of the lower side of the reinforced concrete panel (5), and the groove (501) is filled with SR plastic water-stopping material (12); A geomembrane (8), one side of which is laid on a three-dimensional composite drainage net (14), the cushion material (15) being located below the three-dimensional composite drainage net (14), and the other side of the geomembrane (8) extending and bonding to the asphalt concrete panel (1); and The bulge (9) is a connected double-peaked structure, which is formed by arranging the SR plastic water-stopping material (12) on the three-dimensional composite drainage net (14), the geomembrane (8) is laid on the bulge (9), and the geomembrane (8) located between the double peaks is fixed to the reinforced concrete panel (5) through an anchor unit (11); The asphalt concrete panel (1) is divided from top to bottom into a mastic sealing layer (101), an anti-seepage layer (102) and a leveling bonding layer (103), and a polyester mesh (104) is arranged in the leveling bonding layer (103); The anchoring unit (11) comprises an anchoring hole corresponding to the bulge (9) between the reinforced concrete panel (5) and the double peaks, and a stainless steel anchoring screw (1103) is installed in the anchoring hole, a stainless steel flat steel (10) is installed on the bulge (9) located at the upper end of the anchoring hole, a gasket (1102) is installed on the stainless steel flat steel (10), and a nut (1101) is arranged on the gasket (1102), the nut (1101) and the stainless steel anchoring screw (1103) are connected by threads, the SR plastic water-stopping material (12) is filled between the stainless steel flat steel (10) and the bulge (9), and the bonding parts between the stainless steel flat steel (10) and the bulge (9) and between the nut (1101) and the gasket (1102) are all coated with HK edge sealing agent II (13); The SR plastic water-stopping material (12) located below the stainless steel flat steel (10) is a composite material of five layers, from top to bottom, namely, SR base glue 1 (1202), the SR sliding layer (1204), SR anti-seepage rubber strip (1203), SR anti-seepage protective cover sheet (1201) and SR base glue 2 (1205).

2. The method for connecting a geomembrane and an asphalt concrete panel according to claim 1 is characterized in that: One end of the asphalt concrete panel (1) abuts against the stepped surface of the reinforced concrete panel (5), and the other end of the asphalt concrete panel (1) is seated on the upper end of the cushion layer wedge (4).

3. The connection method of a geomembrane and an asphalt concrete panel according to claim 1 is characterized in that: The geomembrane (8) and the asphalt concrete panel (1) are bonded together using butyl raw tape (801), and a porous base fabric (802) with a width of at least 5 cm is bonded to the edges, and the edges are sealed using HK edge sealant 1 (3).

4. The connection method of a geomembrane and an asphalt concrete panel according to claim 1 is characterized in that: The geomembrane (8) located at the upper end of the asphalt concrete panel (1) is evenly distributed and covered with a plurality of sandbags (6) and prefabricated blocks (2).

5. The connection method of a geomembrane and an asphalt concrete panel according to claim 1 is characterized in that: The three-dimensional composite drainage net (14) is a three-layer composite structure of a geotextile (7), a drainage net and a geotextile (7).

6. The connection method of a geomembrane and an asphalt concrete panel according to claim 4 is characterized in that: The sandbag (6) is a structure in which at least 30 kg of fine sand is filled in a non-woven woven composite fabric.

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