CN216515368U

CN216515368U - Dam foundation seals seepage prevention structure among reservoir danger removal reinforcement engineering

Info

Publication number: CN216515368U
Application number: CN202123097223.9U
Authority: CN
Inventors: 张锦书; 李纪田; 张子云
Original assignee: Anhui Xingfeng Construction Engineering Co ltd
Current assignee: Anhui Xingfeng Construction Engineering Co ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-05-13
Anticipated expiration: 2031-12-10

Abstract

The utility model relates to a dam foundation seals seepage prevention structure among reservoir danger removal strengthening engineering belongs to hydraulic engineering construction technical field, including first impervious wall and second impervious wall, be provided with the seepage prevention subassembly between first impervious wall and the second impervious wall, the seepage prevention subassembly includes fixed connection in the diapire of first impervious wall and second impervious wall bottom, the top fixed mounting of first impervious wall and second impervious wall has grey soil layer. According to the dam foundation closed seepage-proofing structure in the reservoir danger removal and reinforcement project, the first seepage-proofing wall, the second seepage-proofing wall and the bottom wall are arranged and connected together to form the U-shaped double-layer structure, so that the seepage water can be actively extracted through the drainage channel when permeating into the seepage-proofing structure, the possibility of continuous seepage is reduced, meanwhile, the double-layer seepage-proofing structure is arranged and matched with the geomembrane, the whole seepage-proofing new performance of the seepage-proofing structure can be greatly improved, and the phenomenon of dam foundation seepage is relieved to the maximum extent.

Description

Dam foundation seals seepage prevention structure among reservoir danger removal reinforcement engineering

Technical Field

The application relates to the technical field of hydraulic engineering construction, in particular to a dam foundation closed seepage-proofing structure in reservoir danger-removing reinforcement engineering.

Background

The reservoir danger removal and reinforcement engineering is to perform seepage prevention treatment on the existing reservoir dam, and a seepage prevention wall is usually adopted for seepage prevention, wherein the seepage prevention wall is formed by drilling a round hole or directly excavating a slotted hole by using a special machine tool, and concrete, backfilled clay or other seepage prevention materials and the like are poured into the hole or prefabricated concrete members are installed to form a continuous underground wall body.

When the dam is built into an initial stage for water storage, the seepage deformation of the dam foundation is serious, soil layers influencing the seepage stability of the dam foundation are mainly sandy soil layers and sand-egg gravel layers, wherein the permeability coefficient of the sandy soil layers is small, but the dispersity is large, the seepage of the sand-egg gravel layers is medium, the levels of sand gravel materials at different positions and different elevations of the dam foundation are inconsistent, and most grading compositions are poor, so that the seepage deformation of the dam foundation of the reservoir is easy to generate.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the dam foundation closed seepage-proofing structure in the reservoir danger removal and reinforcement engineering has the advantages of good seepage-proofing performance, capability of pretreating permeated water and the like, and solves the problem that the dam foundation of the reservoir is easy to generate seepage deformation in the prior art.

In order to achieve the above purpose, the present application provides the following technical solutions: a dam foundation closed seepage-proofing structure in reservoir danger removal and reinforcement engineering comprises a first seepage-proofing wall and a second seepage-proofing wall, wherein a seepage-proofing assembly is arranged between the first seepage-proofing wall and the second seepage-proofing wall;

the seepage-proofing assembly comprises a bottom wall fixedly connected to the bottoms of the first seepage-proofing wall and the second seepage-proofing wall, a gray soil layer is fixedly mounted at the tops of the first seepage-proofing wall and the second seepage-proofing wall, a seepage cavity is formed between the first seepage-proofing wall and the second seepage-proofing wall, and a drainage channel penetrating through the gray soil layer is communicated with the seepage cavity.

Furthermore, the cross section of the bottom wall is in a semicircular arc shape, the thicknesses of the bottom wall, the first impervious wall and the second impervious wall are the same, and the first impervious wall, the second impervious wall and the bottom wall form a U-shaped structure together.

By adopting the technical scheme, the whole anti-seepage structure can provide a seepage drainage space so as to facilitate drainage.

Further, the bottom of first cut-off wall and second cut-off wall all fixed mounting have the fixture block, the draw-in groove has been seted up at the top of end wall, the fixture block joint in the draw-in groove.

By adopting the technical scheme, the first impervious wall and the second impervious wall are correspondingly connected with the bottom wall.

Furthermore, equal fixed mounting has first fixed plate on the opposite face of first impervious wall and second impervious wall, fixed mounting has the second fixed plate corresponding with first fixed plate on the inside wall of headwall, fixed mounting has public buckle and female buckle respectively on the opposite face of first fixed plate and second fixed plate, buckle joint in female buckle altogether.

By adopting the technical scheme, the first impervious wall, the second impervious wall and the bottom wall are good in connection stability.

Furthermore, the outside fixed mounting of first cut-off wall and second cut-off wall has the planting bar, the outside fixed mounting of first cut-off wall and second cut-off wall has the spacing frame that is run through by the planting bar.

Further, the limiting frame is of a rectangular frame structure, and the length of the inner diameter of the limiting frame is equal to the distance between the first impervious wall and the second impervious wall.

Furthermore, a fixing hole is formed in the limiting frame in a penetrating mode, and the embedded steel bars are connected to the fixing hole in a sliding mode.

Furthermore, geomembranes are fixedly installed on the inner walls of the first impervious wall, the second impervious wall and the bottom wall.

By adopting the technical scheme, the anti-seepage performance of the anti-seepage structure is improved.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

according to the dam foundation closed seepage-proofing structure in the reservoir danger removal and reinforcement project, the first seepage-proofing wall, the second seepage-proofing wall and the bottom wall are arranged and connected together to form the U-shaped double-layer structure, so that the seepage water can be actively extracted through the drainage channel when permeating into the seepage-proofing structure, the possibility of continuous seepage is reduced, meanwhile, the double-layer seepage-proofing structure is arranged and matched with the geomembrane, the whole seepage-proofing new performance of the seepage-proofing structure can be greatly improved, and the phenomenon of dam foundation seepage is relieved to the maximum extent.

Drawings

FIG. 1 is a schematic structural diagram of the present application;

FIG. 2 is a schematic view of a bottom wall connection structure according to the present application;

fig. 3 is a schematic structural diagram of the limiting frame of the present application.

In the figure: 1. a first cut-off wall; 2. a second cut-off wall; 3. a bottom wall; 4. a card slot; 5. a clamping block; 6. a first fixing plate; 7. a second fixing plate; 8. a male buckle; 9. a female buckle; 10. planting bars; 11. a limiting frame; 12. a fixing hole; 13. a permeate chamber; 14. a drainage channel; 15. a grey soil layer; 16. and (4) geomembrane.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, the dam foundation closed seepage-proofing structure in the reservoir danger removal and reinforcement project in the embodiment includes a first seepage-proofing wall 1 and a second seepage-proofing wall 2, the first seepage-proofing wall 1 and the second seepage-proofing wall 2 are arranged at the bottom of the dam foundation at intervals in front and at the back, and a seepage-proofing assembly is arranged between the first seepage-proofing wall 1 and the second seepage-proofing wall 2.

In the embodiment, the seepage-proofing assembly comprises a bottom wall 3 fixedly connected to the bottoms of a first seepage-proofing wall 1 and a second seepage-proofing wall 2, the bottom wall 3 is arranged in an underground rock basement, the stability of the whole seepage-proofing assembly is ensured, the cross section of the bottom wall 3 is in a semicircular arc shape, the bottom wall 3 is the same as the first seepage-proofing wall 1 and the second seepage-proofing wall 2 in thickness, the first seepage-proofing wall 1, the second seepage-proofing wall 2 and the bottom wall 3 which are connected up and down can jointly form a U-shaped structure, the seepage of the reservoir is prevented in a double mode, a lime soil layer 15 is fixedly installed on the tops of the first seepage-proofing wall 1 and the second seepage-proofing wall 2, and the lime soil layer 15 is used for keeping the smoothness above the dam foundation.

It should be noted that a permeation cavity 13 is formed between the first impermeable wall 1 and the second impermeable wall 2, the permeation cavity 13 can store the permeation water permeating to the inside through the first impermeable wall 1, and meanwhile, the permeation cavity 13 is communicated with a drainage channel 14 penetrating through a loess layer 15, so that the permeation water permeating to the inside of the permeation cavity 13 can be pumped out and discharged, the possibility of continuous permeation is reduced, and the protection effect of the impermeable structure is good.

Referring to fig. 2, in order to enhance the connection stability between the first and second cut-off

walls

1 and 2 and the bottom wall 3, in this embodiment, the bottom portions of the first and second cut-off

walls

1 and 2 are both fixedly mounted with a fixture block 5, the top portion of the bottom wall 3 is provided with a clamping groove 4, and the fixture block 5 is clamped in the clamping groove 4, so as to guide and connect the positions of the first and second cut-off

walls

1 and 2 relative to the bottom wall 3.

In this embodiment, the opposite surfaces of the first impervious wall 1 and the second impervious wall 2 are both fixedly provided with a first fixing plate 6, the inner side wall of the bottom wall 3 is fixedly provided with a second fixing plate 7 corresponding to the first fixing plate 6, the opposite surfaces of the first fixing plate 6 and the second fixing plate 7 are respectively fixedly provided with a male buckle 8 and a female buckle 9, the male buckle 8 is clamped in the female buckle 9, and the male buckle 8 and the female buckle 9 are clamped and limited, so that the connection stability of the first impervious wall 1 and the second impervious wall 2 relative to the bottom wall 3 is ensured, and the problem that the first impervious wall 1 and the second impervious wall 2 are inclined is prevented.

It should be noted that the planting bars 10 are fixedly installed on the exterior of the first impervious wall 1 and the exterior of the second impervious wall 2, the limiting frame 11 penetrated by the planting bars 10 is fixedly installed on the exterior of the first impervious wall 1 and the exterior of the second impervious wall 2, the limiting frame 11 is a rectangular frame structure, and the length of the inner diameter of the limiting frame 11 is equal to the distance between the first impervious wall 1 and the second impervious wall 2, so that the first impervious wall 1 and the second impervious wall 2 can keep the relative positions fixed by being attached to the inner wall of the limiting frame 11.

Referring to fig. 3, in the embodiment, a fixing hole 12 is formed through the limiting frame 11, the embedded bars 10 are slidably connected to the fixing hole 12, and the embedded bars 10 at two sides can be slidably connected to the fixing hole 12 to limit the upper and lower positions of the limiting frame 11.

In order to improve the seepage-proofing capability of the seepage-proofing assembly, geomembranes 16 are fixedly arranged on the inner walls of the first seepage-proofing wall 1, the second seepage-proofing wall 2 and the bottom wall 3.

The working principle of the above embodiment is as follows:

when the seepage water is blocked by the seepage wall, the seepage water can be firstly blocked by the first seepage-proofing wall 1, the seepage water permeates into the seepage cavity 13 between the first seepage-proofing wall 1 and the second seepage-proofing wall 2 to be accumulated after slowly permeating through the first seepage-proofing wall 1 and the geomembrane 16, and the seepage water in the seepage cavity 13 can be actively extracted through the drainage channel 14, so that the possibility of continuous seepage of the seepage water is reduced, and meanwhile, the seepage of the seepage water is continuously prevented through the second seepage-proofing wall 2, so that the seepage-proofing effect of the seepage-proofing structure is good.

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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present application 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 application, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a dam foundation seals seepage prevention structure among reservoir danger removal strengthening engineering, includes first impervious wall (1) and second impervious wall (2), its characterized in that: an anti-seepage assembly is arranged between the first anti-seepage wall (1) and the second anti-seepage wall (2);

the seepage-proofing assembly comprises a bottom wall (3) fixedly connected to the bottom of a first seepage-proofing wall (1) and the bottom of a second seepage-proofing wall (2), a lime soil layer (15) is fixedly mounted at the top of the first seepage-proofing wall (1) and the top of the second seepage-proofing wall (2), a seepage cavity (13) is formed between the first seepage-proofing wall (1) and the second seepage-proofing wall (2), and a drainage channel (14) penetrating through the lime soil layer (15) is communicated with the seepage cavity (13).

2. The dam foundation closed seepage-proofing structure in the reservoir danger-removing and reinforcing project according to claim 1, characterized in that: the section of the bottom wall (3) is in a semicircular arc shape, the thicknesses of the bottom wall (3), the first impervious wall (1) and the second impervious wall (2) are the same, and the first impervious wall (1), the second impervious wall (2) and the bottom wall (3) jointly form a U-shaped structure.

3. The dam foundation closed seepage-proofing structure in the reservoir danger-removing and reinforcing project according to claim 1, characterized in that: the bottom of the first impervious wall (1) and the bottom of the second impervious wall (2) are fixedly provided with clamping blocks (5), the top of the bottom wall (3) is provided with clamping grooves (4), and the clamping blocks (5) are clamped in the clamping grooves (4).

4. The dam foundation closed seepage-proofing structure in the reservoir danger-removing and reinforcing project according to claim 1, characterized in that: equal fixed mounting has first fixed plate (6) on the opposite face of first impervious wall (1) and second impervious wall (2), fixed mounting have on the inside wall of headwall (3) with second fixed plate (7) that first fixed plate (6) are corresponding, first fixed plate (6) with on the opposite face of second fixed plate (7) respectively fixed mounting have public buckle (8) and female buckle (9), public buckle (8) joint in female buckle (9).

5. The dam foundation closed seepage-proofing structure in the reservoir danger-removing and reinforcing project according to claim 1, characterized in that: the external fixed mounting of first impervious wall (1) with second impervious wall (2) has planting muscle (10), the external fixed mounting of first impervious wall (1) with second impervious wall (2) has by spacing frame (11) that planting muscle (10) run through.

6. The dam foundation closed seepage-proofing structure in the reservoir danger-removing and reinforcing project according to claim 5, wherein: the limiting frame (11) is of a rectangular frame structure, and the length of the inner diameter of the limiting frame (11) is equal to the distance between the first impervious wall (1) and the second impervious wall (2).

7. The dam foundation closed seepage-proofing structure in the reservoir danger-removing and reinforcing project according to claim 5, wherein: the limiting frame (11) is provided with a fixing hole (12) in a penetrating mode, and the embedded steel bars (10) are connected to the fixing hole (12) in a sliding mode.

8. The dam foundation closed seepage-proofing structure in the reservoir danger-removing and reinforcing project according to claim 1, characterized in that: geomembranes (16) are fixedly arranged on the inner walls of the first impervious wall (1), the second impervious wall (2) and the bottom wall (3).