Anchoring device and anchoring structure for geomembrane and building

Abstract

The utility model discloses an anchoring device and an anchoring structure for a geomembrane and a building, which are mainly used for arranging a geomembrane expansion joint and overhauling the geomembrane anchoring structure in the later period by arranging an anchoring groove at the joint of a dam slope anti-seepage composite geomembrane and a drainage tower and other dam-penetrating concrete buildings. A dam slope composite geomembrane is introduced into a geomembrane anchoring groove, a folded geomembrane expansion joint is arranged in the anchoring groove, the expansion joint is mainly used for reserving surplus for the geomembrane, and the situation that the geomembrane is pulled to crack at the anchoring structure due to the fact that the geomembrane is pulled due to sedimentation of a dam body and the like is prevented. And the geomembrane is anchored on a dam-penetrating concrete building such as a drainage tower through an anchoring structure after the expansion joint, so that an anti-seepage body of the dam forms a whole. The anchoring groove cover plate is arranged on the geomembrane anchoring groove, and the anchoring groove cover plate is mainly used for protecting the geomembrane in the anchoring groove and guaranteeing the flatness of the dam face.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic engineering in water conservancy projects, and specifically relates to an anchoring device and an anchoring structure for a geomembrane and a building. Background Art

[0002] As a type of earth-rock dam, geomembrane inclined wall dam mainly uses geomembrane as the anti-seepage body of the dam. It has been widely used in the upper and lower reservoirs of pumped storage power stations and plain reservoirs for anti-seepage of the entire reservoir basin. The main advantages of using geomembrane as the anti-seepage body of the dam are: low investment, strong anti-seepage performance, and light and easy construction. However, there are also many problems with geomembrane as a dam anti-seepage body, especially in the connection with concrete buildings. There are the following three problems: ① Due to design defects in the anchoring structure or poor anchoring quality, it is easy to form a seepage channel at the connection between the geomembrane and the concrete building. ② Geomembrane is a flexible material of a polymer compound with a relatively thin thickness and easy to tear. When the dam body settles, it will cause pulling on the geomembrane. At the same time, the geomembrane is anchored on the concrete structure, so the anchoring position is the most likely part of the geomembrane to be torn. ③Usually, the geomembrane anti-seepage body of the geomembrane inclined wall dam is equipped with a protective layer and slope protection. If there is a problem at the connection between the geomembrane and the concrete structure, maintenance will be very difficult.

[0003] The weakest part of the earth-rock dam project is the connection between the earth-rock dam and the concrete building. The connection between the earth-rock dam and the water discharge tower, concrete dam, culvert and other buildings has a short seepage diameter between the soil and concrete. If there is a problem with the dam body's anti-seepage body, a large amount of water will enter the dam body, which will increase the dam body's infiltration line, and then cause the dam body to be damaged by penetration, affecting the safety of the dam body. If the situation is serious, there is even a risk of dam collapse. For geomembrane inclined wall dams, if there is a leakage channel at the connection between the geomembrane and the concrete building, or the geomembrane at the anchoring part is cracked, it will directly cause the dam body at the connection between the earth-rock dam and the concrete building to be damaged by penetration, affecting the safety of the dam.

[0004] Therefore, for geomembrane inclined wall dams, choosing a suitable connection structure between geomembrane and concrete buildings is the key to ensuring the safe operation of the project. Utility Model Content

[0005] The utility model aims to provide an anchoring device and an anchoring structure for geomembrane and a building, so as to strengthen the connection between the geomembrane of a sloping wall dam and a concrete building, and avoid the geomembrane from being torn and damaged at the connection part.

[0006] The purpose of the utility model is achieved through the following technical means: an anchoring device for anchoring a geomembrane to a building, comprising a flat steel, an edge expansion bolt, an edge expansion bolt nut, a middle expansion bolt and a middle expansion nut; a claw rib is connected to one side of the flat steel, an inner rubber gasket is arranged on the other side, an outer rubber gasket is arranged on the other side of the inner rubber gasket; the edge expansion bolt nut and the middle expansion nut are both located on the side of the outer rubber gasket away from the inner rubber gasket; the edge expansion bolt and the middle expansion bolt are inserted from the side of the inner rubber gasket close to the claw rib and pass through the inner rubber gasket and the outer rubber gasket, and are matched and connected with the corresponding edge expansion bolt nut and the middle expansion nut.

[0007] It also includes a channel steel, the opening of which faces the outer rubber gasket. The channel steel includes a channel steel waist and channel steel legs at both ends of the channel steel waist. The channel steel legs are in contact with the outer rubber gasket. The middle expansion nut is located on the outside of the channel steel waist. The middle expansion bolt passes through the inner rubber gasket, the outer rubber gasket and the channel steel waist and is matched with the middle expansion bolt to be connected.

[0008] It also includes an anti-seepage cover plate, which has a semicircular cross-section. The anti-seepage cover plate wraps the channel steel, the middle expansion nut and the middle expansion bolt outside the outer rubber gasket. The anti-seepage cover plate is connected to the outer rubber gasket to form a closed structure. The anti-seepage cover plate is filled with polyurethane putty. There are also protrusions extending to both sides at the bottom of the anti-seepage cover plate, and the protrusions are located between the outer rubber gasket and the edge expansion bolts and nuts.

[0009] An anchoring structure of an anchoring device for geomembrane and a building, comprising a building and a dam body filling material layer, a side of the dam body filling material layer close to the building is provided with a downwardly concave anchoring groove, an anchoring groove is provided in the anchoring groove, an anchoring groove cover is covered above the anchoring groove, and a geomembrane seam is left at the contact between the anchoring groove and the anchoring groove cover away from the building side;

[0010] A coarse sand cushion layer is laid on the dam body filling material layer. The coarse sand cushion layer is divided into a horizontal layer and an inclined layer. The height of the horizontal layer is lower than the height of the geomembrane seam. The end of the horizontal layer close to the geomembrane seam is an upward inclined layer. The highest point of the inclined layer is at the same height as the bottom of the geomembrane seam.

[0011] A dam slope composite geomembrane is laid on the coarse sand cushion layer. The dam slope composite geomembrane is inserted into the anchoring trench from the geomembrane seam along the inclined layer. An anchoring device is also arranged in the anchoring trench. The anchoring device is connected to the side wall of the building. The dam slope composite geomembrane is sandwiched between the inner rubber gasket and the outer rubber gasket of the anchoring device.

[0012] A dam slope concrete slope protection is laid above the dam slope composite geomembrane, and the top height of the dam slope concrete slope protection is the same as the top height of the anchor trench cover.

[0013] The anchoring groove comprises a first anchoring plate and a second anchoring plate, wherein one end of the first anchoring plate is connected to the side wall of the building, and the other end is connected to the vertical second anchoring plate.

[0014] The building is also provided with a side wall groove, and one end of the anchoring groove cover plate is located in the side wall groove.

[0015] A geomembrane expansion joint is also arranged in the anchoring trench, and the geomembrane expansion joint is a folded and stacked dam slope composite geomembrane.

[0016] The geomembrane seam is also provided with a rubber gasket on the anchoring ditch and a rubber gasket on the anchoring ditch cover plate. The rubber gasket on the anchoring ditch is connected to the top of the second anchor plate, and the rubber gasket on the anchoring ditch cover plate is connected to the bottom of the anchoring ditch cover plate. The rubber gasket on the anchoring ditch cover plate presses the dam slope composite geomembrane onto the rubber gasket on the anchoring ditch.

[0017] The top of the second anchoring plate is arc-shaped near a corner of the building.

[0018] A mortar cushion layer is also laid on the dam slope composite geomembrane of the horizontal layer.

[0019] The beneficial effect of the utility model is that by setting an anchoring ditch at the connection between the anti-seepage composite geomembrane on the dam slope and the through-dam concrete structures such as the water discharge tower, it is mainly used to set the geomembrane expansion joint and the later maintenance of the geomembrane anchoring structure. The dam slope composite geomembrane is introduced into the geomembrane anchoring ditch, and a folded geomembrane expansion joint is set in the anchoring ditch. The main function of the expansion joint is to reserve a surplus for the geomembrane to prevent the geomembrane from being pulled and cracked at the anchoring structure due to reasons such as the settlement of the dam body. After the expansion joint, the geomembrane is anchored to the through-dam concrete structures such as the water discharge tower through the anchoring structure, so that the anti-seepage body of the dam forms a whole. An anchoring ditch cover is set on the geomembrane anchoring ditch. The main function of the anchoring ditch cover is to protect the geomembrane in the anchoring ditch and ensure the flatness of the dam surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the anchoring structure for anchoring the geomembrane to the building;

[0021] Figure 2 is a schematic diagram of the structure of the anchoring device;

[0022] Figure 3 It is a large-scale drawing of the contact area between the composite geomembrane on the dam slope and the anchor trench and the anchor trench;

[0023] Figure 4 This is the layout diagram of the claw reinforcement and middle expansion bolt positions;

[0024] 1. Composite geomembrane on dam slope; 2. Anchor device; 3. Building; 4. Anchor ditch; 5. Anchor ditch cover; 6. Concrete slope protection on dam slope; 7. Mortar cushion; 8. Coarse sand cushion; 9. Dam body filling material layer; 10. Middle expansion bolt; 11. Channel steel; 12. Middle expansion nut; 13. Claw bar; 14. Flat steel; 15. Polyurethane cement; 16. Anti-seepage cover; 17. Inner rubber gasket; 18. Outer rubber gasket; 19. Edge expansion bolt; 20. Gasket flat steel; 21. Edge expansion bolt nut; 22. Rubber gasket on anchor ditch; 23. Rubber gasket on anchor ditch cover; 24. Side wall groove;

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0026] [Example 1]

[0027] like Figure 2 As shown, an anchoring device for anchoring a geomembrane to a building comprises a flat steel 14, an edge expansion bolt 19, an edge expansion bolt nut 21, a middle expansion bolt 10 and a middle expansion nut 12. A claw rib 13 is connected to one side of the flat steel 14, and an inner rubber gasket 17 is arranged on the other side. An outer rubber gasket 18 is arranged on the other side of the inner rubber gasket 17. The edge expansion bolt nut 21 and the middle expansion nut 12 are both located on the side of the outer rubber gasket 18 away from the inner rubber gasket 17. The edge expansion bolt 19 and the middle expansion bolt 10 are inserted from the side of the inner rubber gasket 17 close to the claw rib 13 and pass through the inner rubber gasket 17 and the outer rubber gasket 18, and are matched and connected with the corresponding edge expansion bolt nut 21 and the middle expansion nut 12.

[0028] like Figure 4 As shown, the claw bar 13 is embedded in the building 3, and the strip flat steel 14 is connected to the embedded claw bar 13 by welding, and the flat steel 14 is fixed to the side of the building 3. Then, an inner rubber gasket 17 and an outer rubber gasket 18 are sequentially arranged on the surface of the flat steel 14, and the dam slope composite geomembrane 1 to be clamped is placed between the two gaskets.

[0029] The main function of the flat steel 14 is to improve the flatness of the contact surface between the rubber gasket and the wall of the dam-penetrating building 3, and to prevent water seepage in the gap between the rubber gasket and the wall of the dam-penetrating building 3.

[0030] The side expansion bolts 19 and the middle expansion bolts 10 are punched and inserted into the building 3, wherein the middle expansion bolt 10 is also inserted into the wall of the building 3 through the flat steel 14. You can choose to punch holes or directly reserve holes on the flat steel 14, and connect with the corresponding bolts through the side expansion bolt nuts 21 and the middle expansion nuts 12 on the outside of the outer rubber gasket 18, so as to press the inner rubber gasket 17, the dam slope composite geomembrane 1 and the outer rubber gasket 18 tightly against the wall of the building 3 to realize the anchoring of the dam slope composite geomembrane 1 and the building 3. The inner rubber gasket 17 and the outer rubber gasket 18 are used to protect the dam slope composite geomembrane 1.

[0031] It also includes a channel steel 11, which opens toward the outer rubber gasket 18. The channel steel 11 includes a channel steel waist and channel steel legs at both ends of the channel steel waist. The channel steel legs are in contact with the outer rubber gasket 18. The middle expansion nut 12 is located on the outside of the channel steel waist. The middle expansion bolt 10 passes through the inner rubber gasket 17, the outer rubber gasket 18 and the channel steel waist and is matched with the middle expansion bolt 10 to be connected.

[0032] The function of the channel steel 11 is to increase the contact area between the middle expansion nut 12 and the outer rubber gasket 18. The threaded end of the middle expansion bolt 10 extends out from the waist of the channel steel. The middle expansion nut 12 is connected with the bolt from the outside of the waist of the channel steel. The channel steel 11 is pressed downward and contacts the outer rubber gasket 18 through the channel steel legs to increase the contact area and better press the outer rubber gasket 18 and the channel steel 11 on the wall of the building 3. Reduce the gap between the rubber gasket and the geomembrane, and the gap between the rubber gasket and the concrete wall of the building 3.

[0033] A gasket flat steel 20 sleeved on the edge expansion bolt 19 is also provided between the outer rubber gasket 18 and the edge expansion bolt nut 21, which has the same function of increasing the contact area and avoiding damage to the outer rubber gasket 18 when the bolt and nut are connected.

[0034] It also includes an anti-seepage cover sheet 16, which has a semicircular cross-section. The anti-seepage cover sheet 16 wraps the channel steel 11, the middle expansion nut 12 and the middle expansion bolt 10 outside the outer rubber gasket 18. The anti-seepage cover sheet 16 is connected to the outer rubber gasket 18 to form a closed structure. The anti-seepage cover sheet 16 is filled with polyurethane glue 15. The bottom of the anti-seepage cover sheet 16 also has protrusions extending to both sides, and the protrusions are located between the outer rubber gasket 18 and the edge expansion bolt nuts 21.

[0035] In order to improve the airtightness of the anchoring structure, KS glue specially used for bonding geomembrane is applied to the contact parts between the rubber gasket, geomembrane and the dam-penetrating buildings.

[0036] Furthermore, a semicircular anti-seepage cover sheet 16 is provided. The semicircular closed structure formed by connecting the anti-seepage cover sheet 16 and the outer rubber gasket 18 completely covers the channel steel 11, the middle expansion nut 12 and the middle expansion bolt 10, and the polyurethane cement 15 is filled in the anti-seepage cover sheet 16 to improve the airtightness and anti-seepage performance of the anchoring structure. In addition, the bottom of the anti-seepage cover sheet 16 has a protrusion extending to both sides, which is sandwiched between the outer rubber gasket 18 and the edge expansion bolt nut 21. The position of the anti-seepage cover sheet 16 is fixed by the edge expansion bolt nut 21. In the case of a gasket flat steel 20, it is located between the gasket flat steel 20 and the outer rubber gasket 18.

[0037] The middle expansion bolt 10 has a diameter of 10-16 mm, a length of 20-25 cm, and a spacing of 20-30 cm. Since the dam slope composite geomembrane 1 is laid from the dam top to the dam bottom, a very long dam slope composite geomembrane 1 needs to be anchored. The flat steel 14 is also a long strip from the dam top to the dam bottom, and a middle expansion bolt 10 is installed on the flat steel 14 at intervals.

[0038] The claw ribs 13 are usually 10-12 mm in diameter and are arranged at the same intervals, and are later welded to the flat steel 14 to fix the flat steel.

[0039] The width of the flat steel 14 is usually 15cm~20cm, and the thickness is 10mm~12mm. Its main function is to improve the flatness of the contact surface between the rubber gasket and the wall of the dam-penetrating building 3, and to avoid water seepage in the gap between the rubber gasket and the wall of the dam-penetrating building 3.

[0040] The inner rubber gasket 17 and the outer rubber gasket 18 are 10×1cm (width×thickness), and their main function is to protect the geomembrane. In order to improve the airtightness of the anchoring structure, special geomembrane bonding glue is applied to the contact parts between the rubber gasket and the geomembrane and the dam-penetrating buildings.

[0041] The semicircular impermeable cover sheet 16 is usually 20 cm in diameter.

[0042] The side expansion bolts 19 are arranged on both sides of the middle expansion bolts 10, 15cm to 20cm away from the middle expansion bolts 10, the bolt diameter is 10 to 16mm, the length is 10cm, and the spacing is 20 to 30cm. Specifically, the four side expansion bolts 19 form a quadrilateral, and the middle expansion bolt 10 is at the center of the quadrilateral.

[0043] The size of the gasket flat steel 20 is usually 5×0.5cm (width×thickness).

[0044] like Figure 1As shown, an anchoring structure of an anchoring device for geomembrane and a building comprises a building 3 and a dam body filling material layer 9, a side of the dam body filling material layer 9 close to the building 3 is provided with a downwardly concave anchoring groove, an anchoring groove 4 is provided in the anchoring groove, an anchoring groove cover plate 5 is covered above the anchoring groove 4, and a geomembrane seam is left at the contact between the anchoring groove 4 and the anchoring groove cover plate 5 away from the building 3;

[0045] A coarse sand cushion layer 8 is laid on the dam body filling material layer 9. The coarse sand cushion layer 8 is divided into a horizontal layer and an inclined layer. The height of the horizontal layer is lower than the height of the geomembrane seam. One end of the horizontal layer close to the geomembrane seam is an upwardly inclined inclined layer. The highest point of the inclined layer is at the same height as the lower edge of the geomembrane seam.

[0046] A dam slope composite geomembrane 1 is laid on the coarse sand cushion layer 8. The dam slope composite geomembrane 1 is inserted into the anchoring groove 4 from the geomembrane seam along the inclined layer. An anchoring device 2 is also arranged in the anchoring groove 4. The anchoring device 2 is connected to the side wall of the building 3. The dam slope composite geomembrane 1 is sandwiched between the inner rubber gasket 17 and the outer rubber gasket of the anchoring device 2.

[0047] A dam slope concrete slope protection 6 is laid above the dam slope composite geomembrane 1 , and the top height of the dam slope concrete slope protection 6 is the same as the top height of the anchor trench cover 5 .

[0048] A downwardly sunken anchoring groove is provided on one side of the dam body filling material layer 9 close to the dam-penetrating structure 3 to be protected, for placing the anchoring groove 4, which is a long inclined groove from the dam top to the dam bottom.

[0049] The anchoring trench 4 is arranged close to the building 3, and the anchoring trench cover plate 5 is covered on the top of the anchoring trench 4. The anchoring trench 4, the anchoring trench cover plate 5 and the side wall of the building 3 form a closed space, and the anchoring device 2 is arranged in the closed space. Specifically, a plurality of claw ribs 13 of the anchoring device 2 are embedded in the side wall of the building 3 corresponding to the closed space during construction, and then the flat steel 14 is welded along the slope, and after clamping one end of the dam slope composite geomembrane 1 with two rubber gaskets, the inner rubber gasket 17 and the outer rubber gasket 18 are fixed to the flat steel 14 by bolts and nuts, and the other end of the dam slope composite geomembrane 1 is pulled out of the anchoring trench 4 and laid on the coarse sand cushion layer 8.

[0050] A thin geomembrane seam is left between the anchor trench cover 5 and the anchor trench 4 for the dam slope composite geomembrane 1 to be pulled out from here. The anchor trench cover 5 is pressed on the anchor trench 4 and does not require additional connection. The anchor trench cover 5 can be lifted during maintenance and inspection, which is convenient for maintenance and inspection.

[0051] A coarse sand cushion layer 8 is laid on the dam body filling material layer 9. The coarse sand cushion layer 8 is divided into two parts. Most of it is a horizontal layer with a height lower than the geomembrane seam. On the side of the horizontal layer close to the anchor trench 4, an inclined layer is set up that gradually rises upward until it is consistent with the height of the geomembrane seam. Coarse sand cushion layer 8: Its main function is to prevent the sharp-edged particles in the dam body filling material from damaging the geomembrane. It is set at the lower part of the dam slope anti-seepage composite geomembrane 1, and the thickness is 20~30cm.

[0052] The dam slope composite geomembrane 1 pulled out from the anchor trench 4 is first laid obliquely downward along the inclined layer, and then laid flat along the horizontal layer.

[0053] Finally, a dam slope concrete slope protection 6 is laid on the dam slope composite geomembrane 1 to protect the dam slope composite geomembrane 1 .

[0054] The dam slope concrete slope protection 6 is mainly used to prevent floating objects in the reservoir from damaging the anti-seepage composite geomembrane. The dam slope concrete slope protection 6 is arranged upstream of the dam slope composite geomembrane 1. The slope protection is usually made of plain concrete or reinforced concrete with a thickness of not less than 15 cm. In order to prevent the anti-seepage composite geomembrane from being damaged during the construction of the concrete slope protection, a 5 cm thick mortar cushion layer 7 should be provided between the anti-seepage composite geomembrane and the concrete slope protection.

[0055] The anchoring groove 4 includes a first anchoring plate and a second anchoring plate. One end of the first anchoring plate is connected to the side wall of the building 3, and the other end is connected to the vertical second anchoring plate.

[0056] The building 3 is also provided with a side wall groove 24 , and one end of the anchoring trench cover plate 5 is located in the side wall groove 24 .

[0057] like Figure 1 As shown, the side wall groove 24 is used to place the left end of the anchor trench cover plate 5, and the right end is placed on the top of the second anchor plate.

[0058] Building 3 is a dam-penetrating building, which mainly includes a water discharge tower, concrete dam, culvert, culvert, etc. It is usually a concrete structure, and its main functions are to take in water from the reservoir, discharge water from the reservoir, and discharge water from the reservoir. At the overlap of the anchor trench cover, a groove should be left on the side wall of the dam-penetrating building to facilitate the overlap of the anchor trench cover. The depth of the groove is usually 10cm

[0059] A geomembrane expansion joint is also arranged in the anchoring trench 4, and the geomembrane expansion joint is a folded and stacked dam slope composite geomembrane 1.

[0060] Part of the dam slope composite geomembrane 1 is placed in the anchor trench 4 in a Z-folded manner to prevent the geomembrane from being damaged by tension due to foundation settlement, etc. At the same time, in order to prevent the Z-shaped folding crease from damaging the membrane, a closed-cell foam board is filled in the expansion joint.

[0061] The composite geomembrane 1 for the dam slope adopts a composite two-cloth-one-membrane, in which the main function of the geomembrane is to prevent the dam from seepage, and the geomembrane is laid on the water-facing surface of the dam. The function of the geotextile is to protect the geomembrane and reduce the risk of damage to the geomembrane. At the same time, the composite two-cloth-one-membrane can improve the stability of the dam slope protection. The two-cloth-one-membrane can adopt LLDPE composite geomembrane, the thickness of the geomembrane is 0.8mm~1.5mm, and the specification of the geotextile is 600~800g / m 2 .

[0062] The geomembrane seam is also provided with a rubber gasket 22 on the anchoring groove and a rubber gasket 23 on the anchoring groove cover plate. The rubber gasket 22 on the anchoring groove is connected to the top of the second anchor plate, and the rubber gasket 23 on the anchoring groove cover plate is connected to the bottom of the anchoring groove cover plate 5. The rubber gasket 23 on the anchoring groove cover plate presses the dam slope composite geomembrane 1 onto the rubber gasket 22 on the anchoring groove.

[0063] The main function of the anchor trench cover 5 is to protect the geomembrane in the anchor trench 4 and ensure the flatness of the dam surface.

[0064] The top of the second anchoring plate, close to a corner of the building 3, is arc-shaped.

[0065] A mortar cushion layer 7 is also laid on the horizontal layer of the dam slope composite geomembrane 1.

[0066] like Figure 3 As shown, in order to prevent the composite geomembrane from being damaged by the anchor trench 4 when it is pulled, rubber gaskets are arranged at the contact parts between the anchor trench 4 and the anchor trench cover 5 and the composite geomembrane, and the rubber gaskets are connected to the anchor trench and the anchor trench cover by bonding. In order to prevent the right angle of the side wall of the anchor trench 4 from damaging the geomembrane when the composite geomembrane is pulled, the right angle inside the side wall of the anchor trench 4 should be rounded. The anchor trench 4 and the anchor trench cover 5 are usually cast with concrete.

Claims

1. An anchoring device for geomembrane and building, characterized in that: The invention comprises a flat steel (14), an edge expansion bolt (19), an edge expansion bolt nut (21), a middle expansion bolt (10) and a middle expansion nut (12); one side of the flat steel (14) is connected with a claw rib (13), and the other side is provided with an inner rubber gasket (17); the other side of the inner rubber gasket (17) is provided with an outer rubber gasket (18); the edge expansion bolt nut (21) and the middle expansion nut (12) are both located on the side of the outer rubber gasket (18) away from the inner rubber gasket (17); the edge expansion bolt (19) and the middle expansion bolt (10) are inserted from the side of the inner rubber gasket (17) close to the claw rib (13) and pass through the inner rubber gasket (17) and the outer rubber gasket (18), and are matched and connected with the corresponding edge expansion bolt nut (21) and the middle expansion nut (12).

2. The anchoring device for geomembrane and building according to claim 1, characterized in that: It also includes a channel steel (11), wherein the opening of the channel steel (11) faces the outer rubber gasket (18), the channel steel (11) includes a channel steel waist and channel steel legs at both ends of the channel steel waist, the channel steel legs are in contact with the outer rubber gasket (18), the middle expansion nut (12) is located outside the channel steel waist, and the middle expansion bolt (10) passes through the inner rubber gasket (17), the outer rubber gasket (18) and the channel steel waist and is matched with the middle expansion bolt (10) to be connected.

3. The anchoring device for geomembrane and building according to claim 2, characterized in that: The invention also comprises an anti-seepage cover sheet (16), the cross section of which is semicircular, and the anti-seepage cover sheet (16) wraps the channel steel (11), the middle expansion nut (12) and the middle expansion bolt (10) outside the outer rubber gasket (18), and the anti-seepage cover sheet (16) is connected with the outer rubber gasket (18) to form a closed structure, the anti-seepage cover sheet (16) is filled with polyurethane glue (15), and the bottom of the anti-seepage cover sheet (16) also has protrusions extending to both sides, and the protrusions are located between the outer rubber gasket (18) and the edge expansion bolt nut (21).

4. The anchoring structure of the anchoring device of the geomembrane and the building according to any one of claims 1 to 3, comprising a building (3) and a dam body filling material layer (9), characterized in that: A downwardly concave anchoring groove is provided on the side of the dam body filling material layer (9) close to the building (3), an anchoring groove (4) is provided in the anchoring groove, an anchoring groove cover plate (5) is covered above the anchoring groove (4), and a geomembrane seam is left at the contact point between the anchoring groove (4) and the anchoring groove cover plate (5) away from the building (3); A coarse sand cushion layer (8) is laid on the dam body filling material layer (9), and the coarse sand cushion layer (8) is divided into a horizontal layer and an inclined layer. The height of the horizontal layer is lower than the height of the geomembrane seam. One end of the horizontal layer close to the geomembrane seam is an upwardly inclined inclined layer, and the highest point of the inclined layer is at the same height as the lower edge of the geomembrane seam. A dam slope composite geomembrane (1) is laid on the coarse sand cushion layer (8). The dam slope composite geomembrane (1) is inserted into an anchoring groove (4) from a seam of the geomembrane along the inclined layer. An anchoring device (2) is also arranged in the anchoring groove (4). The anchoring device (2) is connected to the side wall of the building (3). The dam slope composite geomembrane (1) is sandwiched between an inner rubber gasket (17) and an outer rubber gasket of the anchoring device (2). A dam slope concrete slope protection (6) is laid above the dam slope composite geomembrane (1), and the top height of the dam slope concrete slope protection (6) is the same as the top height of the anchor trench cover plate (5).

5. The anchoring structure according to claim 4, characterized in that: The anchoring groove (4) comprises a first anchoring plate and a second anchoring plate, wherein one end of the first anchoring plate is connected to the side wall of the building (3), and the other end is connected to a vertical second anchoring plate.

6. The anchoring structure according to claim 4, characterized in that: The building (3) is also provided with a side wall groove (24), and one end of the anchoring groove cover plate (5) is located in the side wall groove (24).

7. The anchoring structure according to claim 5, characterized in that: A geomembrane expansion joint is also provided in the anchoring trench (4), and the geomembrane expansion joint is a folded and stacked dam slope composite geomembrane (1).

8. The anchoring structure according to claim 5, characterized in that: The geomembrane seam is also provided with a rubber gasket (22) on the anchoring groove and a rubber gasket (23) on the anchoring groove cover plate. The rubber gasket (22) on the anchoring groove is connected to the top of the second anchor plate, and the rubber gasket (23) on the anchoring groove cover plate is connected to the bottom of the anchoring groove cover plate (5). The rubber gasket (23) on the anchoring groove cover plate presses the dam slope composite geomembrane (1) onto the rubber gasket (22) on the anchoring groove.

9. The anchoring structure according to claim 5, characterized in that: The top of the second anchoring plate, close to a corner of the building (3), is arc-shaped.

10. The anchoring structure according to claim 5, characterized in that: A mortar cushion layer (7) is also laid on the horizontal layer of the dam slope composite geomembrane (1).

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