CN218622092U

CN218622092U - Novel seepage-proofing structure for key part of high core rockfill dam

Info

Publication number: CN218622092U
Application number: CN202222403606.2U
Authority: CN
Inventors: 周建平; 杜效鹄; 周兴波; 江婷; 杨子儒
Original assignee: China Water Resources And Hydropower Construction Engineering Consulting Co ltd; General Institute Of Hydropower And Water Resources Planning And Design Co ltd; China Renewable Energy Engineering Institute
Current assignee: China Water Resources And Hydropower Construction Engineering Consulting Co ltd; General Institute Of Hydropower And Water Resources Planning And Design Co ltd; China Renewable Energy Engineering Institute
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2023-03-14
Anticipated expiration: 2032-09-09

Abstract

The utility model belongs to the technical field of large-scale hydraulic and hydroelectric engineering, and a novel seepage prevention structure in high core rock-fill dam key position is disclosed, including the clay core wall body, the equal fixed mounting in both sides about the clay core wall body has the geomembrane, the outside fixed mounting of geomembrane has the drainage way of anti-straining, the outside fixed mounting who strains the drainage way has the protective layer, the surface course has been laid to the surface of protective layer, the top fixed mounting of clay core wall body has the dam crest road surface. The utility model discloses a set up geomembrane and anti-drainage channel of straining, through the design of geomembrane to it is inside to get into clay core wall body with its rivers that stop external, and make inside rivers are difficult to permeate into clay core wall body, and then reached the purpose of protection clay core wall body, then through the design of anti-drainage channel, thereby will make its rivers that stop the geomembrane discharge the outside of this structure fast, and then reached the purpose that the prevention of seepage was passed through.

Description

Novel seepage-proofing structure for key part of high core rockfill dam

Technical Field

The utility model belongs to the technical field of large-scale hydraulic and hydroelectric engineering, specifically be the novel seepage prevention structure in key position of high core rockfill dam.

Background

The core-wall rock-fill dam is one of the main dam types of the high dam in China, is planned and constructed in each large watershed in China, becomes a leading reservoir or a controllable step of the watershed, and the working reliability of an anti-seepage system of the core-wall rock-fill dam under a high water head becomes one of key technical problems.

At present, people generally build earth-rock dams for preventing flood damages, and most earth-rock dams in the prior art adopt clay core walls or asphalt concrete core walls as seepage-proofing bodies, but the earth-rock dams are single in structure, so that flood can possibly penetrate into the clay core walls and corrode and damage the clay core walls, the reservoir earth-rock dams can be broken, life and property safety of people can be damaged, and therefore improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above problem, the utility model provides a novel seepage prevention structure in high core rock-fill dam key position has the advantage that the prevention of seepage was passed through.

In order to achieve the above object, the utility model provides a following technical scheme: the novel seepage prevention structure for the key parts of the high core rock-fill dam comprises a clay core body, geomembranes are fixedly mounted on the two sides of the left side and the right side of the clay core body, a reverse filtering drainage channel is fixedly mounted on the outer side of each geomembrane, a protective layer is fixedly mounted on the outer side of each reverse filtering drainage channel, a surface layer is laid on the outer surface of each protective layer, a dam crest road surface is fixedly mounted at the top of the clay core body, and the bottom of the dam crest road surface is fixedly connected with the geomembranes and the reverse filtering drainage channels and the protective layer respectively.

As the utility model discloses preferred, the quantity of geomembrane is two, two the size of geomembrane is different, two the geomembrane all adopts the polyethylene material to make, the left lower extreme of geomembrane is located the below of surface course.

As the utility model discloses it is preferred, the left lower extreme of drainage of anti-straining is located the below of surface course, anti-drainage of straining adopts asphalt concrete to make.

As the utility model discloses preferred, the protective layer adopts foamed plastic sheet and needle-punched geotextile to make, the protective layer is thicker than geomembrane and anti-drainage channel is whole.

As the utility model discloses it is preferred, the surface course adopts big stone to pile up to make, the quantity of surface course is two, and the size of two surface courses is the same.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a set up geomembrane and anti-drainage channel of straining, through the design of geomembrane to it blocks inside external rivers get into the clay core wall body, and make inside rivers are difficult to permeate into the clay core wall body, and then reached the purpose of protection clay core wall body, then through the design of anti-drainage channel, thereby will make its rivers that stop the geomembrane discharge the outside of this structure fast, and then reached the purpose that the prevention of seepage was passed through.

2. The utility model discloses a set up protective layer and surface course, because the design of protective layer, thereby will make it alleviate flood to anti-drainage way impact force of straining, and then make it reach the purpose of the anti-drainage way of straining of protection, then through the design of surface course, thereby will make flood spoondrift only can strike the surface course earlier, and then reached and alleviateed the impact of flood spoondrift to this earth and rockfill dam structure, through mutually supporting of the two, thereby this earth and rockfill dam structure's safety has been protected, and the life of this earth and rockfill dam structure is prolonged.

Drawings

Fig. 1 is a schematic structural view of the present invention.

In the figure: 1. a clay core body; 2. a geomembrane; 3. reverse filtering the drainage channel; 4. a protective layer; 5. a surface layer; 6. and (5) supporting the road surface at the top of the dam.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the utility model provides a novel seepage prevention structure of high core rock-fill dam key position, including clay core wall body 1, the equal fixed mounting in both sides about clay core wall body 1 has geomembrane 2, the outside fixed mounting of geomembrane 2 has anti-drainage channel 3 of straining, the outside fixed mounting of anti-drainage channel 3 has protective layer 4, surface 5 has been laid to protective layer 4's surface, the top fixed mounting of clay core wall body 1 has dam crest road surface 6, the bottom on dam crest road surface 6 respectively with geomembrane 2 and anti-drainage channel 3 and protective layer 4's top fixed connection, the left side of this earth and rock dam structure is the upper reaches, the right side of this earth and rock dam structure is low reaches, straight line current roads such as vehicle on dam crest road surface 6.

Referring to fig. 1, the number of the geomembranes 2 is two, the two geomembranes 2 are different in size, both the geomembranes 2 are made of a polyethylene material, and the lower end of the left side of the geomembrane 2 is positioned below the facing layer 5.

As a technical optimization scheme of the utility model, through the design of geomembrane 2 to it blocks that external rivers get into inside the clay core body 1 and damage clay core body 1.

Referring to fig. 1, the lower end of the left side of the reverse filtering drainage channel 3 is positioned below the surface layer 5, and the reverse filtering drainage channel 3 is made of asphalt concrete.

As a technical optimization scheme of the utility model, through the design of anti-drainage 3 to will make its rivers that stop geomembrane 2 discharge the outside of this structure fast.

Referring to fig. 1, the protective layer 4 is made of a foam sheet and a needle-punched geotextile, and the protective layer 4 is thicker than the geomembrane 2 and the reverse drainage channel 3 as a whole.

As a technical optimization scheme of the utility model, because the design of protective layer 4 to will make it alleviate the flood to anti-drainage channel 3 impact force of straining, and then make it reach the purpose of the anti-drainage channel 3 of straining of protection.

Referring to fig. 1, the surface course 5 is made of large stone blocks, the number of the surface courses 5 is two, and the two surface courses 5 have the same size.

As a technical optimization scheme of the utility model, through surface course 5's design to will make the flood spoondrift only can strike surface course 5 earlier, and then protected the safety of this structure.

The utility model discloses a theory of operation and use flow:

when this earth and rockfill dam is strikeed to flood spray, this moment because the design of protective layer 4, thereby will make it alleviate flood to anti-3 impact forces of straining water drainage way, and then make it reach the anti-purpose of straining water drainage way 3 of protection, then through the design of surface course 5, thereby will make flood spray only can strike surface course 5 earlier, and then reached and alleviateed the impact of flood spray to this earth and rockfill dam structure, thereby protected the safety of this earth and rockfill dam structure, and then prolong the life of this earth and rockfill dam structure.

When rivers infiltration income this earth and rockfill dam structure's inside, design through geomembrane 2 this moment, thereby it gets into clay core body 1 inside and damages clay core body 1 with its rivers that stop the external world, then through the design of anti-drainage 3, thereby will make its rivers that stop geomembrane 2 discharge the outside of this structure fast, and then reached the purpose of protecting this earth and rockfill dam structure, thereby effectively avoid rivers infiltration water to cause progressive washing damage to this earth and rockfill dam, and then reached the purpose of prevention of seepage.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Novel seepage prevention structure in key position of high core rock-fill dam, including clay core body (1), its characterized in that: the equal fixed mounting in both sides of clay core wall body (1) left and right sides has geomembrane (2), the outside fixed mounting of geomembrane (2) has anti-drainage (3) of straining, the outside fixed mounting who strains drainage (3) has protective layer (4), surface layer (5) have been laid to the surface of protective layer (4), the top fixed mounting of clay core wall body (1) has dam crest road surface (6), the bottom on dam crest road surface (6) respectively with geomembrane (2) and anti-top fixed connection who strains drainage (3) and protective layer (4).

2. The novel seepage-proofing structure for the key parts of the high core rock-fill dam according to claim 1 is characterized in that: the geomembrane (2) is two in quantity, two the size of geomembrane (2) is different, two geomembrane (2) all adopts the polyethylene to make, the left lower extreme of geomembrane (2) is located the below of surface course (5).

3. The novel seepage-proofing structure for the key parts of the high core rock-fill dam according to claim 1 is characterized in that: the lower end of the left side of the reverse filtering drainage channel (3) is positioned below the surface layer (5), and the reverse filtering drainage channel (3) is made of asphalt concrete.

4. The novel seepage-proofing structure for the key parts of the high core rock-fill dam according to claim 1 is characterized in that: the protective layer (4) is thicker than the geomembrane (2) and the reverse filtering drainage channel (3) integrally.

5. The novel seepage-proofing structure for the key parts of the high core rock-fill dam according to claim 1 is characterized in that: surface course (5) adopt big stone to pile up and make, the quantity of surface course (5) is two, and the size of two surface courses (5) is the same.