CN212506117U - Reservoir bottom geomembrane scour prevention water filling structure - Google Patents
Reservoir bottom geomembrane scour prevention water filling structure Download PDFInfo
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- CN212506117U CN212506117U CN202020504282.XU CN202020504282U CN212506117U CN 212506117 U CN212506117 U CN 212506117U CN 202020504282 U CN202020504282 U CN 202020504282U CN 212506117 U CN212506117 U CN 212506117U
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Abstract
The utility model provides a reservoir bottom geomembrane scour prevention water filling structure, which comprises a concrete precast block, a geotextile protective layer, a geomembrane, a drainage layer, cement bentonite, a concrete block, a water filling steel pipe and a protective layer; the water-filled steel pipe is arranged in a groove body provided with the water-filled steel pipe at the bottom of the reservoir, the tail end of the water-filled steel pipe is bent upwards to extend out of the reservoir bottom, and a pit is formed at the reservoir bottom near the outlet at the tail end of the water-filled steel pipe; in the tank body, the protective layer is arranged outside the flat pipe section of the water-filled steel pipe, and the anchor blocks are arranged at the bent positions of the tail ends of the water-filled steel pipe; cement bentonite is backfilled in the excavated groove body; paving the drainage layer at the bottom of the warehouse, paving a geomembrane on the drainage layer, and paving a geotextile protective layer and an overlying concrete precast block on the geomembrane in the range of the pits; and the geomembrane is laid along the pits and then anchored at the tail end of the water-filled steel pipe. The utility model discloses simple structure, practicality, reliable can protect the bottom of a reservior geomembrane not receiving to erode filling the water in-process.
Description
Technical Field
A reservoir bottom geomembrane anti-scouring water filling structure is mainly suitable for a seepage prevention system adopting a geomembrane at the reservoir bottom of a pumped storage reservoir, a water conservancy project reservoir, a still water pool and the like.
Background
The geomembrane has the advantages of excellent seepage-proofing performance, quick construction, investment conservation and the like, and is widely applied to seepage-proofing systems for seepage-proofing by adopting the geomembrane at the bottoms of pumped storage reservoirs, water conservancy project reservoirs, water storage pools, still water pools and the like. In a reservoir which cannot store water by natural conditions due to small watershed area or other reasons, an external water source is generally required to be connected for water filling at the initial stage, and water is required to be supplemented during the reservoir operation period. At present, a common water filling structure is formed by embedding a pipeline along a slope surface from top to bottom into a reservoir bottom, a falling water flow is formed at a certain height from an outlet position to the bottom, the centralized water filling can generate a large water flow velocity at the outlet position, and the reservoir bottom is directly washed by the water flow, so that the washing damage to a reservoir bottom geomembrane or other anti-seepage bodies is easily caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: aiming at the problems, the geomembrane anti-scouring water filling structure at the bottom of the reservoir is provided and is mainly suitable for an anti-seepage system for seepage prevention by adopting a geomembrane at the bottom of reservoirs such as a pumped storage reservoir, a water conservancy project reservoir, a still water pool and the like.
Therefore, the utility model adopts the following technical scheme:
the utility model provides a bottom of reservior geomembrane scour prevention fills water structure which characterized in that: the concrete waterproof layer comprises a concrete precast block, a geotextile protective layer, a geomembrane, a drainage layer, cement bentonite, a concrete anchor block, a water-filled steel pipe and a protective layer;
the water-filled steel pipe is arranged in a groove body provided with the water-filled steel pipe at the bottom of the reservoir, the tail end of the water-filled steel pipe is bent upwards to extend out of the reservoir bottom, and a pit is formed at the reservoir bottom near the outlet at the tail end of the water-filled steel pipe;
in the tank body, the protective layer is arranged outside the flat pipe section of the water-filled steel pipe, and the anchor blocks are arranged at the bent positions of the tail ends of the water-filled steel pipe; cement bentonite is backfilled in the excavated groove body; paving the drainage layer at the bottom of the warehouse, paving a geomembrane on the drainage layer, and paving a geotextile protective layer and an overlying concrete precast block on the geomembrane in the range of the pits; and the geomembrane is laid along the pits and then anchored at the tail end of the water-filled steel pipe.
Further: the thickness of the ballast block outside each side of the steel pipe is not less than the diameter of the steel pipe.
Further: the range of the geotextile is slightly larger than that of the precast concrete block.
Further: the top elevation of the drainage layer in a certain range around the water filling steel pipe is lower than the bottom elevation of the reservoir, and the drainage layer at the periphery of the pit is connected with the drainage layer at the bottom of the reservoir according to a slope which is slower than 1: 4.
Further: the horizontal section range of the pit is not less than 5 times of the diameter of the water filling pipeline.
Further: the protective layer adopts a reinforced concrete layer.
The utility model discloses a fill the water steel pipe and pierce through behind the reservoir bottom geomembrane, emit rivers from the reservoir bottom steel pipe and distributed inflow reservoir bottom, improved the great problem of centralized water flow velocity of flow that fills, utilize the excavation or reserve pit and form the water blanket, and geomembrane covers protective structure in the pit, avoids rivers directly to erode to prevent that the geomembrane from erodeing and destroying.
Adopt the utility model discloses a scheme, simple structure, practicality, reliable can protect the bottom of a reservior geomembrane not receiving to erode filling the water in-process.
Drawings
Fig. 1 is a schematic cross-sectional view of an embodiment of the present invention.
Detailed Description
Referring to the drawings, the utility model provides a pair of bottom of reservior geomembrane scour protection fills water structure, including concrete prefabricated section 1, geotechnological cloth protective layer 8, geomembrane 2, drainage blanket 3, cement bentonite 4, concrete anchor block 5, fill water steel pipe 6, add reinforced concrete protective layer 7.
The water-filled steel pipe 6 is laid at the bottom of the reservoir, and the tail end of the water-filled steel pipe is bent to be vertical to the horizontal plane and extends out of the reservoir bottom.
Reserve earlier or excavate the cell body and supply to mat formation and fill water steel pipe 6 before laying drainage blanket 3, geomembrane 2, fill water steel pipe 6 at the plain tube section peripheral hardware of storehouse bottom with muscle concrete layer 7 protection, prevent that inhomogeneous settlement from causing the steel pipe atress to destroy, fill 6 terminal curved perpendicular to horizontal planes of water steel pipe, 6 terminal department of bending of water steel pipe sets up anchor block 5 and prevents that rivers from arousing vibrations, anchor block 5 is suitable with not being less than the steel pipe diameter in the thickness of 6 each sides of steel pipe outside.
After the water-filled steel pipe 6, the concrete anchor 5 and the reinforced concrete protective layer 8 are laid, the cement bentonite 4 is backfilled in the excavated groove body, and the problem that the upright edge of the anchor 5 is difficult to roll is solved by utilizing the advantages of high fluidity during construction and certain strength after solidification.
And pouring cement bentonite, laying a drainage layer 3 within the range of laying the geomembrane 2 at the bottom of the reservoir after a certain time interval, wherein the drainage layer 3 can adopt sand gravel or a geotechnical mat (geotextile and geotechnical mesh) and the like. In order to form a pit 9 around the outlet of the water filling steel pipe 6, the top elevation of a drainage layer 3 in a certain range around the water filling steel pipe 6 is 0.4-0.6 m lower than the bottom elevation, the drainage layer at the periphery of the pit 9 is connected with the bottom drainage layer according to a slope which is 1:4 slower, the height of the steel pipe outlet 60 is 1.0m higher than the bottom elevation, and the horizontal section range B of the pit 9 is not less than 5 times of the diameter d of the water filling pipeline.
After the operation is finished, the geomembrane 2 is laid, the geotextile protective layer 8 and the overlying concrete precast block 1 are laid on the geomembrane 2 within the range of the pit 9 and used for protecting the geomembrane from being scoured and damaged by water flow in the water filling process of the reservoir, and the thickness of the geotextile is not less than 400g/m2The thickness of the precast concrete block is preferably 25 cm-40 cm, and the range of the geotextile 8 is slightly larger than that of the precast concrete block 1.
And (3) paving the geomembrane 2 along the pits, and finally anchoring the geomembrane 2 at the tail ends of the water-filled steel pipes 6 by adopting an anchoring structure 10 to prevent leakage. The anchoring structure 10 may employ a stainless steel adjustment clamp.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art can change, add or replace the above examples within the scope of the present invention.
Claims (6)
1. The utility model provides a bottom of reservior geomembrane scour prevention fills water structure which characterized in that: the concrete waterproof layer comprises a concrete precast block, a geotextile protective layer, a geomembrane, a drainage layer, cement bentonite, a concrete anchor block, a water-filled steel pipe and a protective layer;
the water-filled steel pipe is arranged in a groove body provided with the water-filled steel pipe at the bottom of the reservoir, the tail end of the water-filled steel pipe is bent upwards to extend out of the reservoir bottom, and a pit is formed at the reservoir bottom near the outlet at the tail end of the water-filled steel pipe;
in the tank body, the protective layer is arranged outside the flat pipe section of the water-filled steel pipe, and the anchor blocks are arranged at the bent positions of the tail ends of the water-filled steel pipe; cement bentonite is backfilled in the excavated groove body; paving the drainage layer at the bottom of the warehouse, paving a geomembrane on the drainage layer, and paving a geotextile protective layer and an overlying concrete precast block on the geomembrane in the range of the pits; and the geomembrane is laid along the pits and then anchored at the tail end of the water-filled steel pipe.
2. The bottom-of-reservoir geomembrane scour prevention water-filling structure according to claim 1, wherein: the thickness of the ballast block outside each side of the steel pipe is not less than the diameter of the steel pipe.
3. The bottom-of-reservoir geomembrane scour prevention water-filling structure according to claim 1, wherein: the range of the geotextile is slightly larger than that of the precast concrete block.
4. The bottom-of-reservoir geomembrane scour prevention water-filling structure according to claim 1, wherein: the top elevation of the drainage layer in a certain range around the water filling steel pipe is lower than the bottom elevation of the reservoir, and the drainage layer at the periphery of the pit is connected with the drainage layer at the bottom of the reservoir according to a slope which is slower than 1: 4.
5. The bottom-of-reservoir geomembrane scour prevention water-filling structure according to claim 1, wherein: the horizontal section range of the pit is not less than 5 times of the diameter of the water filling pipeline.
6. The bottom-of-reservoir geomembrane scour prevention water-filling structure according to claim 1, wherein: the protective layer adopts a reinforced concrete layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020504282.XU CN212506117U (en) | 2020-04-08 | 2020-04-08 | Reservoir bottom geomembrane scour prevention water filling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020504282.XU CN212506117U (en) | 2020-04-08 | 2020-04-08 | Reservoir bottom geomembrane scour prevention water filling structure |
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| Publication Number | Publication Date |
|---|---|
| CN212506117U true CN212506117U (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020504282.XU Active CN212506117U (en) | 2020-04-08 | 2020-04-08 | Reservoir bottom geomembrane scour prevention water filling structure |
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| CN (1) | CN212506117U (en) |
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2020
- 2020-04-08 CN CN202020504282.XU patent/CN212506117U/en active Active
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