A composite geomembrane integral inclined laying and fixing structure for dam body and dam-penetrating structures

Abstract

This utility model proposes an integral inclined laying and fixing structure of composite geomembrane between the dam body and the dam-penetrating structure, belonging to the field of water conservancy engineering technology. It mainly includes a reservoir connecting section culvert structure one, a reservoir connecting section culvert structure two, anchor bolts, nuts, stainless steel pressure plates, neoprene rubber gaskets, and composite geomembrane. The connection between the composite geomembrane on the dam slope and the structure adopts an anchoring + weight connection method. Before laying the membrane, it is ensured that the upstream slope of the dam and the upstream of the outlet structure two are on the same slope. Only two layers of geomembrane are laid at the bottom plate of the outlet structure two. Before laying the membrane, it is ensured that the upstream slope of the dam and the outlet of the outlet culvert are on the same slope. The geomembrane is laid flat, so that the geomembrane is in a stable stress state and avoids tearing and damage.

Description

Technical Field

[0001] This utility model belongs to the field of water conservancy engineering technology, specifically relating to an integral inclined laying and fixing structure of composite geomembrane for dam body and dam-penetrating structures. Background Technology

[0002] Geomembrane, a widely used seepage control material in water conservancy projects, directly affects the subsequent seepage control effect of the project, especially for medium and large-sized plain reservoirs that adopt geomembrane seepage control. Therefore, how the geomembrane is fixed during the entire laying process is crucial. Traditional geomembrane fixing structures include trench anchoring, nail anchoring, and expansion bolt anchoring. Trench anchoring is further divided into concrete anchoring trenches and clay anchoring trenches.

[0003] The connection points between geomembranes and other structures are key weak points. Improper handling can damage the geomembrane, leading to inadequate seepage control, leaks, or geomembrane detachment. Traditional geomembrane anchoring methods are prone to stress concentration at the anchoring points, resulting in an "end-fixing effect" that places the geomembrane in an unfavorable stress state, causing tearing and failure. Therefore, exploring a suitable geomembrane fixing structure is crucial to improving this situation. Utility Model Content

[0004] This utility model addresses the problems of the prior art. The technical solution adopted in this application is as follows: a composite geomembrane integral inclined laying and fixing structure for dam body and dam-penetrating structures, mainly including reservoir connecting section culvert structure one and reservoir connecting section culvert structure two; the reservoir connecting section culvert structure one and the reservoir connecting section culvert structure two are connected by hot-melt welding of the PE geomembrane in the lower layer of the reservoir and the PE geomembrane in the composite geomembrane of the dam slope.

[0005] The culvert structure of the inner connection section of the reservoir includes a connecting section, a hole, an inclined section and a horizontal installation section arranged in sequence. The hole is a trapezoidal hole. The size of the connecting section is smaller than that of the horizontal installation section. Water flows out through the hole.

[0006] The second culvert structure of the reservoir connection section includes a water outlet section, a smooth section, a downward sloping section and a smooth section connected in sequence. The water outlet section has two culvert outlets, the smooth section is provided with corresponding holes, the downward sloping section is provided with corresponding inclined sections, and the smooth section is provided with corresponding horizontal installation sections.

[0007] The connection between the composite geomembrane on the dam slope and the building adopts the connection method of anchoring + weighting; before laying the membrane, ensure that the upstream slope of the dam and the upstream of the second outlet structure are the same slope, and only two layers of geomembrane are laid at the bottom of the reservoir at the bottom plate of the second outlet structure.

[0008] Furthermore, the first connecting culvert structure within the reservoir forms the dam slope, and the second connecting culvert structure within the reservoir forms the reservoir bottom. The composite geomembrane connecting the reservoir bottom and the dam slope is connected by hot-melt welding of the lower layer of PE geomembrane at the reservoir bottom to the PE geomembrane in the composite geomembrane at the dam slope. The upper layer of geomembrane at the reservoir bottom covers the lower layer with a weld length ≥1m, and is then bonded to the PE geomembrane at the dam slope using geotextile adhesive. The membrane separation length of the composite geomembrane at the dam toe is ≥1.2m.

[0009] Furthermore, both the first and second culvert structures in the reservoir connecting section are C30 reinforced concrete structures. The reinforced concrete of the first culvert structure is the lower layer, while the reinforced concrete of the second culvert structure is the upper layer. A layer of hot asphalt is laid on the upper surface of the lower layer, followed by a composite geomembrane, and then a second layer of hot asphalt. Multiple anchor bolts are then set at intervals. The anchor bolts include bolts and stainless steel pressure plates, neoprene rubber gaskets, and nuts installed along the bolts from bottom to top. The lower surface of the stainless steel pressure plates is bonded with the second layer of hot asphalt.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0011] This utility model comprises two culvert structures within the reservoir, anchor bolts, nuts, stainless steel pressure plates, neoprene rubber gaskets, and a composite geomembrane. The construction includes the construction of the dam structure, backfilling and dam construction on both sides of the structure, laying the composite geomembrane for the dam body, laying the geomembrane at the reservoir bottom, connecting and anchoring the geomembrane, and weighting the inner connection section and outlet structure. Before laying the geomembrane, it is ensured that the upstream slope of the dam and the outlet culvert outlet are on the same slope, and the geomembrane is laid flat to ensure a stable stress state and prevent tearing and damage. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a cross-sectional view of a composite geomembrane for dam body integrally inclined and fixed to the surface of the dam structure, as described in this application.

[0014] Figure 2 This is a plan view of the fixing bolt arrangement of a composite geomembrane for dam body and an integral obliquely laid fixing structure on the surface of a dam-crossing building structure, as described in this application.

[0015] Figure 3This is an axonometric view of the reservoir connection section structure of a composite geomembrane integrally inclined and fixed structure on the surface of the dam structure in this application;

[0016] Figure 4 This is an isometric view of the reservoir connection section structure two of the composite geomembrane of the dam body and the integral inclined laying and fixing structure on the surface of the dam structure of the present application;

[0017] Figure 5 This is a schematic diagram of the anchoring connection structure of the composite geomembrane of the dam body and the integral oblique laying and fixing structure of the structure surface of the dam-crossing building, as described in this application.

[0018] In the diagram: 1. Culvert structure one connecting section within the reservoir; 2. Culvert structure two connecting section within the reservoir; 3. Connecting structure; 4. Bolted connectors; 101. Water flow direction; 102. Dam slope; 103. Energy dissipation section connecting to the reservoir; 104. Anchor bolts; 105. Holes; 106. Culvert outlet; 201. Composite geomembrane; 202. Bolts; 203. Nuts; 204. Neoprene rubber gaskets; 205. Stainless steel pressure plates; 206. Two coats of hot asphalt; 207. One coat of hot asphalt; 208. Upper reinforced concrete structure; 209. Lower reinforced concrete structure. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0021] Example 1, as Figures 1-5 As shown, this application provides a composite geomembrane integral inclined laying and fixing structure for the dam structure surface, mainly comprising a reservoir connecting culvert structure 1, a reservoir connecting culvert structure 2, anchor bolts, nuts, stainless steel pressure plates, neoprene rubber gaskets, and a composite geomembrane. Both connecting culvert structure 1 and culvert structure 2 are C30 reinforced concrete structures. Water flows into the reservoir through the two openings of culvert structure 2 and the opening of culvert structure 1.

[0022] The culvert structure 1 and the culvert structure 2 of the inner connection section are installed using a connecting structure 3. The connecting structure 3 is equipped with bolted connectors 4 arranged in an array. The connecting structure 3 can be made of composite geomembrane 201, and the bolted connectors 4 can be anchor bolts.

[0023] The culvert structure of the connecting section inside the reservoir includes a connecting section, a hole, an inclined section and a horizontal installation section arranged in sequence. The hole is a trapezoidal hole. The size of the connecting section is smaller than that of the horizontal installation section. Water flows out through the hole.

[0024] The culvert structure 2 of the reservoir connection section includes a water outlet section, a smooth section, a downward sloping section, and a smooth section connected in sequence. The water outlet section has two culvert outlets, the smooth section is provided with corresponding openings, the downward sloping section is provided with corresponding inclined sections, and the smooth section is provided with corresponding horizontal installation sections. Specifically, as follows... Figures 1-4 As shown, this includes the water flow direction 101, dam slope 102, energy dissipation section 103 connected to the reservoir, anchor bolts 104 with a spacing of 0.5m, holes 105, and culvert outlet 106.

[0025] The connection between the composite geomembrane on the dam slope and the structure adopts an anchoring + ballast connection method. The geomembrane is first fixed to the culvert structure 2 in the connection section of the reservoir with bolts, and then the culvert structure 1 is used as ballast to press down on the culvert structure 2, which has already been laid with geomembrane. Before laying the membrane, it is ensured that the upstream slope of the dam and the upstream of the outlet structure 2 are the same slope, and only two layers of geomembrane are laid at the bottom of the reservoir at the bottom plate of the outlet structure 2.

[0026] The connection method between the composite geomembrane at the reservoir bottom and the dam slope is as follows: the lower layer of PE geomembrane at the reservoir bottom is heat-fused to the PE geomembrane in the composite geomembrane at the dam slope; the upper layer of geomembrane at the reservoir bottom covers the lower layer with a weld length ≥1m, and then is bonded to the PE geomembrane at the dam slope using geotextile adhesive. The separation length of the composite geomembrane at the dam toe must be ≥1.2m, and must not affect the bonding quality.

[0027] Both culvert structure 1 and culvert structure 2 in the reservoir connection section are C30 reinforced concrete structures. A composite geomembrane is laid on top of culvert structure 2 after culvert structure 1 is fixed in place. At the anchorage connection between the composite geomembrane and culvert structure 2, the reinforced concrete surface is first cleaned, coated with a layer of hot asphalt, and then the composite geomembrane is laid; then another layer of hot asphalt is applied, followed by neoprene rubber gaskets, stainless steel pressure plates, and nuts. The anchorage bolt connection includes bolts, nuts, stainless steel pressure plates, neoprene rubber gaskets, and hot asphalt coating, as detailed below. Figure 5 As shown, the reinforced concrete of the culvert structure 1 in the reservoir connection section is the lower reinforced concrete structure 209, and the reinforced concrete of the culvert structure 2 in the reservoir connection section is the upper reinforced concrete structure 208. A layer of hot asphalt 207 is laid on the upper surface of the lower reinforced concrete structure 209, then a composite geomembrane 201 is laid, and then a layer of hot asphalt 206 is laid. Then, anchor bolts are arranged at set intervals. The anchor bolts include bolts, and stainless steel pressure plates 205, neoprene rubber gaskets 204, and nuts 203 installed along the bolts from bottom to top. The lower surface of the stainless steel pressure plate 205 is attached to the hot asphalt 206.

[0028] To ensure the integrity and effectiveness of the seepage prevention system, the construction steps in this embodiment are as follows: ① Construction of the dam-penetrating structure, ② Backfilling and dam construction on both sides of the structure, ③ Laying the composite geomembrane for the dam body and the geomembrane at the bottom of the reservoir, ④ Geomembrane connection and anchoring, ⑤ Construction of the connecting section inside the reservoir and the ballast structure; Before laying the membrane, ensure that the upstream slope of the dam and the outlet culvert are on the same slope, and that the geomembrane is laid flat.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A dam and a composite geomembrane structure of a building passing through the dam integrally inclined and fixed structure, characterized in that, It mainly includes two culvert structures: one connecting section within the reservoir and another connecting section within the reservoir. The two culvert structures are installed using a connecting structure, which is equipped with bolted connectors arranged in an array. The two culvert structures are connected by a hot-melt welding method, whereby the PE geomembrane at the bottom of the reservoir is hot-melt welded to the PE geomembrane in the composite geomembrane on the dam slope. The culvert structure of the inner connection section of the reservoir includes a connecting section, a hole, an inclined section and a horizontal installation section arranged in sequence. The hole is a trapezoidal hole. The size of the connecting section is smaller than that of the horizontal installation section. Water flows out through the hole. The second culvert structure of the reservoir connection section includes a water outlet section, a smooth section, a downward sloping section, and a smooth section connected in sequence. The water outlet section has two culvert outlets, the smooth section is provided with corresponding holes, the downward sloping section is provided with corresponding inclined sections, and the smooth section is provided with corresponding horizontal installation sections.

2. The integral oblique laying and fixing structure of composite geomembrane for dam body and dam-penetrating structures as described in claim 1, characterized in that, The first connecting culvert structure within the reservoir forms the dam slope, and the second connecting culvert structure within the reservoir forms the reservoir bottom. The composite geomembrane connection between the reservoir bottom and the dam slope is achieved by hot-melt welding of the lower layer of PE geomembrane to the PE geomembrane in the composite geomembrane of the dam slope. The upper layer of geomembrane covering the lower layer has a weld length ≥1m, and is then bonded to the PE geomembrane of the dam slope with geotextile adhesive. The separation length of the composite geomembrane at the dam toe is ≥1.2m. The connection between the composite geomembrane of the dam slope and the structure adopts an anchoring + weight-bearing connection method. Before laying the membrane, it is ensured that the upstream slope of the dam and the upstream of the second outlet structure are the same slope. Only two layers of geomembrane are laid at the bottom plate of the second outlet structure.

3. The integral oblique laying and fixing structure of composite geomembrane for dam body and dam-penetrating structures as described in claim 1, characterized in that, Both the first and second culvert structures in the reservoir connecting section are C30 reinforced concrete structures. The connecting structure uses a composite geomembrane, and the bolted connections use anchor bolts. The reinforced concrete of the first culvert structure is the lower layer of reinforced concrete, and the reinforced concrete of the second culvert structure is the upper layer of reinforced concrete. A layer of hot asphalt is laid on the upper surface of the lower layer of reinforced concrete, followed by a composite geomembrane, and then a second layer of hot asphalt. Multiple anchor bolts are then set at intervals. The anchor bolts include bolts, and stainless steel pressure plates, neoprene rubber gaskets, and nuts installed along the bolts from bottom to top. The lower surface of the stainless steel pressure plates is bonded with two layers of hot asphalt.

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