CN207727514U - A kind of library basin antiseepage is anti-to lift structure - Google Patents
A kind of library basin antiseepage is anti-to lift structure Download PDFInfo
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- CN207727514U CN207727514U CN201721261981.0U CN201721261981U CN207727514U CN 207727514 U CN207727514 U CN 207727514U CN 201721261981 U CN201721261981 U CN 201721261981U CN 207727514 U CN207727514 U CN 207727514U
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Abstract
The utility model discloses that a kind of library basin antiseepage is anti-to lift structure, the lower surface of the library dike (1.3) of cleaning regulation warehouse (1) is until the clear baseline (2) designed in advance, it is equipped with lower layer's geomembrane (3) above the clear baseline (2), it is backfilled with boulder and cobble excavated material (5) upwards in the top of lower layer's geomembrane (3), it is equipped with upper layer geomembrane (4) above the boulder and cobble excavated material (5), several non-return valves (6) are installed on the upper layer geomembrane (4)；The both ends of lower layer's geomembrane (3) are postponed upwards to formation extension (3.3) at the top of library dike (1.3), and the extension (3.3) is linked to be a closed entirety with the upper layer geomembrane (4)；It overcomes is difficult to solve the disadvantage that library basin stability against floating using single drainage measure in the prior art, has the dependence reduced to non-return valve drainage effect, ensures the advantages of regulation warehouse is safely and effectively run.
Description
Technical field
The utility model is related to more particularly be a kind of library to the hydraulic and hydroelectric engineering technical field in civil engineering
Basin antiseepage is anti-to lift structure.
Background technology
Gansu presss from both sides rockery reservoir and is laid with geomembrane anti-seepage, 57.93 ten thousand m of antiseepage area2, geomembrane maximum pressure-bearing depth of water 30m,
Anti-seepage effect is good, is to use large area, the plastic film antiseepage new technology under high water head effect, new work in domestic reservoir construction for the first time
Skill.
Tai'an Pumped Storage Power Station upper storage reservoir bottom storehouse uses HDPE geomembrane horizontal leakage preventings, and there is adaptation bottom storehouse to fill out on a large scale
The characteristics of slag area deformability is strong, good seepage-proof property.160,000 m of geomembrane anti-seepage area2, maximum functional head about 37m on film, day
Maximum functional head luffing 24m is that Chinese large-sized hydroelectric project uses geomembrane as permanent works anti-seepage scheme for the first time.
Middle Line Project For Transferring Water From South To North general main canal channel uses impermeable composite geomembrane, phreatic high canal section to flow automatically using non-return valve
Interior row, water pump pump drainage change to fill out and carry out lowering of watertable in conjunction with drainage.The wherein part of one water chestnut Hebei Section of general main canal Yellow River North
A large amount of cobbles are distributed in canal base in canal section, and water penetration is stronger, are difficult to reach effect using single drainage measure.Design is used and is changed
It fills out method and solves the problems, such as this with the measure that drainage is combined.Packing course is changed by the way that cohesive soil is arranged in canal base, changes canal base seepage flow
Characteristic reduces uplift pressure under liner plate, it is ensured that liner plate stability against floating, while the closed drainage pipe that catchments is set in the case where changing packing course
Outer water is discharged into channel by net, is changed seepage pressure under packing course to reduce, is solved the problems, such as to change packing course stability against floating.But this oozes prosecutor
Case is difficult to carry out in the area for lacking cohesive soil.
Invention content
A kind of anti-lift of library basin antiseepage is proposed the purpose of the utility model is to overcome the shortcoming of above-mentioned background technology
Dynamic structure.
The technical solution of the utility model is implemented by following measure：A kind of library basin antiseepage is anti-to lift structure, in advance
First the lower surface of the library dike of cleaning regulation warehouse is until the clear baseline designed, is equipped with lower layer geotechnique above the clear baseline
Film,
It is backfilled with boulder and cobble excavated material upwards in the top of lower layer's geomembrane, in the boulder and cobble excavated material
Top is equipped with upper layer geomembrane, and several non-return valves are equipped on the upper layer geomembrane；
The both ends of lower layer's geomembrane postpone upwards to library levee crown portion formed extension, the extension with it is described
Upper layer geomembrane be linked to be a closed entirety.
In the above-mentioned technical solutions：The coarse sand between the upper layer geomembrane lower surface and the boulder and cobble excavated material
Underlayer is equipped with bed course and loose stone on coarse sand successively in the upper layer geomembrane upper surface.
In the above-mentioned technical solutions：Boulder and cobble excavated material is provided on the outside of the extension of lower layer's geomembrane to fill
Area, the outer slope Shun Po in the boulder and cobble excavated material reclamation district are provided with galvanized wire gabion.
In the above-mentioned technical solutions：On the inside of the extension of lower layer's geomembrane with the boulder and cobble excavated material it
Between and the extension on the outside of and boulder and cobble excavated material reclamation district between be vertically arranged with coarse sand protective layer, it is described
Coarse sand protective layer flush laying with the boulder and cobble excavated material and boulder and cobble excavated material reclamation district.
In the above-mentioned technical solutions：Upper surface depth of the lower layer's geomembrane apart from loose stone is 2-4 meters.
In the above-mentioned technical solutions：Below lower layer's geomembrane first is equipped between the clear baseline slightly
Sand bedding course is equipped with the second coarse sand bed course above lower layer's geomembrane between the boulder and cobble excavated material.
The utility model has the following advantages that：1, greatly reduce cut-pff wall quantities, about 37,000,000 RMB of reducing investment outlay
(specifically referring to table 1 in specific implementation).2, cancel pipe network drainage system, operational management facility.3, reduce to drain non-return valve and imitate
The dependence of fruit ensures that regulation warehouse is safely and effectively run.
Description of the drawings
Fig. 1 is the structure arrangement schematic diagram of the utility model.
Fig. 2 is the structure arrangement schematic diagram of upper layer geomembrane and non-return valve.
In figure：Regulation warehouse 1, bottom storehouse excavation line 1.1, library basin 1.2, library dike 1.3, clear baseline 2, lower layer's geomembrane 3, boulder and cobble
Excavated material reclamation district 3.1, galvanized wire gabion 3.2, extension 3.3, upper layer geomembrane 4, boulder and cobble excavated material 5, coarse sand protective layer
5.1, under the first coarse sand bed course 5.2, the second coarse sand bed course 5.3, non-return valve 6, concrete pedestal 7, PVC drain pipe 7.1, coarse sand
Bed course 9, loose stone 10 on bed course 8, coarse sand.
Specific implementation mode
The performance that according to the present invention will be described in detail below with reference to the accompanying drawings, but they are not constituted to the utility model
It limits, it is only for example；The advantages of the utility model, will become clearer and be readily appreciated that by explanation simultaneously.
Referring to Fig.1 shown in -2：A kind of library basin antiseepage is anti-to lift structure, clears up the following table of the library dike 1.3 of regulation warehouse 1 in advance
Face is equipped with lower layer's geomembrane 3 until the clear baseline 2 designed in the top of the clear baseline 2,
It is backfilled with boulder and cobble excavated material 5 upwards in the top of lower layer's geomembrane 3, in the boulder and cobble excavated material
5 top is equipped with upper layer geomembrane 4, and several non-return valves 6 are equipped on the upper layer geomembrane 4；
The both ends of lower layer's geomembrane 3 postpone upwards to 1.3 top of library dike and form extension 3.3, and described prolongs
Extending portion 3.3 is linked to be a closed entirety with the upper layer geomembrane 4.
The coarse sand underlayer 8 between 4 lower surface of upper layer geomembrane and the boulder and cobble excavated material 5, described
4 upper surface of upper layer geomembrane be equipped with bed course 9 and loose stone 10 on coarse sand successively.
Between the inside of extension 3.3 of lower layer's geomembrane 3 and the boulder and cobble excavated material 5 and outside
Be vertically arranged with coarse sand protective layer 5.1 between boulder and cobble excavated material reclamation district 3.1, the coarse sand protective layer 5.1 with
The boulder and cobble excavated material 5 and boulder and cobble excavated material reclamation district 3.1 flushes laying.
The outside of the extension 3.3 of lower layer's geomembrane 3 is provided with boulder and cobble excavated material reclamation district 3.1, in institute
The outer slope Shun Po for the boulder and cobble excavated material reclamation district 3.1 stated is provided with galvanized wire gabion 3.2.
Depth of the lower layer's geomembrane 3 apart from 10 upper surface of loose stone is 2-4 meters.
The first coarse sand bed course is equipped between the bottom storehouse excavation line 1.1 below lower layer's geomembrane 3
5.2。
The utility model further includes a kind of method for arranging：A kind of anti-method for arranging for lifting structure of library basin antiseepage, it includes
Following steps；
1., first to the library dike 1.3 of regulation warehouse 1 carry out clear base and excavate until design 2 elevation location of clear baseline；
2., in 1.3 lower part of library dike successively horizontal the first coarse sand bed course 5.2 for being laid with 15 cm thicks, lower layer geotechnique
The second coarse sand bed course 5.3 of film 3,15 cm thicks；
3., the library dike 1.3 is filled using boulder and cobble excavated material 5, while it is 3 both sides of lower layer's geomembrane are upward
Extend and formed extension 3.3, is laid with 0.5 meter thick of coarse sand protective layer 5.1 in 3.3 both sides of extension, and described
Coarse sand protective layer 5.1 fills synchronous progress with the boulder and cobble excavated material 5；
4., while the construction library dike 1.3, library basin 1.2 to the bottom storehouse for excavating 1 middle part of regulation warehouse is excavated
1.1 elevation location of line；
5., along step 4. in bottom storehouse excavation line 1.1 on be laid with 15 the first coarse sand of cm thick bed courses 5.2, then described
The second coarse sand bed course 5.3 of lower layer's geomembrane 3 and 15 cm thicks is laid on first coarse sand bed course 5.2 successively；
6., step 5. in 5.3 top of the second coarse sand bed course boulder and cobble excavated material 5 until upper layer geomembrane 4 it is thick
The bottom surface elevation of sand underlayer 8；
7., step 6. described in 5 top of boulder and cobble excavated material be laid with 15cm thickness the coarse sand underlayer 8, then
It is up laid with upper layer geomembrane 4 in the coarse sand underlayer 8, has then poured several coagulations in the upper layer geomembrane 4
The upper layer geomembrane 4 is extend into concrete pedestal 7 by soil matrix seat 7, and pre-buried in the concrete pedestal 7
PVC drain pipe 7.1；
8., on 4 top of upper layer geomembrane be up laid with bed course 9 and 30 cm thicks on the coarse sand of 15 cm thicks successively
Loose stone 10, non-return valve 6 is finally installed in step PVC drain pipe 7.1 7.；
9., the upper layer geomembrane 4 and 5 both sides of lower layer's geomembrane are linked together and pour the mixed of storage dike 1.3 top
Enclosed construction is formed in Xtah Crude Clay structure.
Table 1
Above-mentioned unspecified part is the prior art.
Claims (6)
1. a kind of library basin antiseepage is anti-to lift structure, it is characterised in that：The lower surface of the library dike (1.3) of cleaning regulation warehouse (1) in advance
Until the clear baseline (2) of design, lower layer's geomembrane (3) is equipped with above the clear baseline (2),
It is backfilled with boulder and cobble excavated material (5) upwards in the top of lower layer's geomembrane (3), in the boulder and cobble excavated material
(5) it is equipped with upper layer geomembrane (4) above, several non-return valves (6) are installed on the upper layer geomembrane (4)；
The both ends of lower layer's geomembrane (3) are postponed upwards to formation extension (3.3) at the top of library dike (1.3), and described prolongs
Extending portion (3.3) is linked to be a closed entirety with the upper layer geomembrane (4).
2. a kind of library basin antiseepage according to claim 1 is anti-to lift structure, it is characterised in that：In the upper layer geomembrane
(4) coarse sand underlayer (8) between lower surface and the boulder and cobble excavated material (5), in described upper layer geomembrane (4) upper surface
It is equipped with bed course on coarse sand (9) and loose stone (10) successively.
3. a kind of library basin antiseepage according to claim 1 or 2 is anti-to lift structure, it is characterised in that：In the subsoil
It is provided with boulder and cobble excavated material reclamation district (3.1) on the outside of the extension (3.3) of work film (3), is filled out in the boulder and cobble excavated material
The outer slope Shun Po for building area (3.1) is provided with galvanized wire gabion (3.2).
4. a kind of library basin antiseepage according to claim 3 is anti-to lift structure, it is characterised in that：In lower layer's geomembrane
(3) on the inside of extension (3.3) between the boulder and cobble excavated material (5) and the extension (3.3) outside and ovum
Coarse sand protective layer (5.1), the coarse sand protective layer (5.1) are vertically arranged between gravel excavated material reclamation district (3.1)
Laying is flushed with the boulder and cobble excavated material (5) and boulder and cobble excavated material reclamation district (3.1).
5. a kind of library basin antiseepage according to claim 4 is anti-to lift structure, it is characterised in that：Lower layer's geomembrane
(3) the upper surface depth apart from loose stone (10) is 2-4 meters.
6. a kind of library basin antiseepage according to claim 4 or 5 is anti-to lift structure, it is characterised in that：In the subsoil
It is equipped with the first coarse sand bed course (5.2) between the clear baseline (2) below work film (3), in lower layer's geomembrane (3)
The second coarse sand bed course (5.3) is equipped between top and the boulder and cobble excavated material (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721261981.0U CN207727514U (en) | 2017-09-27 | 2017-09-27 | A kind of library basin antiseepage is anti-to lift structure |
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| CN201721261981.0U CN207727514U (en) | 2017-09-27 | 2017-09-27 | A kind of library basin antiseepage is anti-to lift structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107687155A (en) * | 2017-09-27 | 2018-02-13 | 长江勘测规划设计研究有限责任公司 | A kind of storehouse basin antiseepage is anti-to lift structure and method for arranging |
| CN115030113A (en) * | 2022-07-12 | 2022-09-09 | 中电建十一局工程有限公司 | Construction method of check valve of underwater flap valve |
-
2017
- 2017-09-27 CN CN201721261981.0U patent/CN207727514U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107687155A (en) * | 2017-09-27 | 2018-02-13 | 长江勘测规划设计研究有限责任公司 | A kind of storehouse basin antiseepage is anti-to lift structure and method for arranging |
| CN115030113A (en) * | 2022-07-12 | 2022-09-09 | 中电建十一局工程有限公司 | Construction method of check valve of underwater flap valve |
| CN115030113B (en) * | 2022-07-12 | 2024-02-13 | 中电建十一局工程有限公司 | Construction method of underwater flap valve check valve |
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