CN202767031U - Reservoir basin clay paving and seepage preventing structure - Google Patents
Reservoir basin clay paving and seepage preventing structure Download PDFInfo
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- CN202767031U CN202767031U CN 201220099657 CN201220099657U CN202767031U CN 202767031 U CN202767031 U CN 202767031U CN 201220099657 CN201220099657 CN 201220099657 CN 201220099657 U CN201220099657 U CN 201220099657U CN 202767031 U CN202767031 U CN 202767031U
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Abstract
The utility model relates to a reservoir basin clay paving and seepage preventing structure and aims at providing a reservoir basin clay paving and seepage preventing structure with the advantages of simple structure, convenience in construction and favorable seepage preventing effect. According to the reservoir basin clay paving and seepage preventing structure, the aim of reducing the seepage quantity to the maximum extent under the conditions of not increasing the construction difficulty, prolonging the construction period and increasing the investment cost. The technical scheme provided by the utility model is as follows: the reservoir basin clay paving and seepage preventing structure comprises a reservoir bottom clay seepage preventing layer and a reservoir bank concrete panel; a transitional layer and a inverted filter layer are sequentially paved under the reservoir bottom clay seepage preventing layer and the reservoir bank concrete panel from bottom to top; and a clay protecting layer is paved on the reservoir bottom clay seepage preventing layer. The reservoir basin clay paving and seepage preventing structure is characterized in that at least one HDPE (High-Density Polyethylene) composite geomembrane is arranged at the joint of the seepage preventing layer and the concrete panel; one end of the composite geomembrane is anchored on the concrete panel; and the other end of the composite geomembrane extends into the reservoir bottom clay seepage preventing layer. The reservoir basin clay paving and seepage preventing structure disclosed by the utility model is suitable for civil engineering such as water conservancy and hydropower.
Description
Technical field
The utility model relates to a kind of storehouse basin leakage preventing structure, and particularly a kind of storehouse basin clay blanket leakage preventing structure mainly is applicable in the civil engineerings such as water conservancy and hydropower.
Background technology
The upper storage reservoir of pumped storage power plant is positioned at eminence, generally all has the reservoir leakage problem, need to take certain engineering measure, generally adopts vertical seepage control pattern and surface anti-seepage pattern, perhaps the combination of multiple antiseepage pattern.Wherein, it is relatively poor that surface anti-seepage is applicable to basin, storehouse matter condition, has the reservoir than the serious leakage problem.The surface anti-seepage form mainly comprises the antiseepage of steel concrete panel, the antiseepage of bituminous concrete panel, geomembrane anti-seepage and clay blanket antiseepage etc.
Adopt the integrated antiseepage system of concrete slab+bottom of the reservior clay blanket such as certain engineering, bottom of the reservior clay bed thickness 4.0m, on cover the thick loaded filter of 10cm and the thick hardcore bed of 20cm; Be the thick loaded filter of 100cm (two-layer) and the thick transition zone of 100cm under the argillic horizon.Bottom of the reservior argillic horizon and slope, bank, bank 1:1.4 concrete slab storehouse, storehouse join.Getting clay blanket permission hydraulic slope during design is 10, and determines thickness of clay soil through seepage stability and quantify seepage.Because the intensity index of clay is lower, pore water pressure in the soil body is difficult for dissipating, the pumped storage power plant water level significantly change with long term under, clay blanket and concrete slab junction often easily produce hydraulic fracture along contact surface, cause perfoliate leakage passage, can't bring into play its this barrier performance of having.And in case appearance destroys, need the emptying reservoir to repair, affect the economic benefit of reservoir.
At present; adopting clay blanket to carry out storehouse basin antiseepage processing to pumped storage power plant generally is exactly by increasing thickness of clay soil; the surface arranges erosion control, antifreeze, anti-chap topping; the bottom arranges the measures such as loaded filter, transition zone makes it satisfy antiseepage requirement and seepage stability requirement as far as possible; but because the material property of clay self restriction; the employing said method is processed; not only anti-seepage effect can not get ensureing; and obviously increasing engineering treating capacity and construction period, the construction investment increase is also many.
Summary of the invention
The technical problems to be solved in the utility model is: the storehouse basin clay blanket leakage preventing structure that a kind of simple in structure, easy construction, good seepage-proof property are provided for the problem of above-mentioned existence, to reach under the condition that does not increase difficulty of construction, construction period and cost of investment, at utmost reduce the purpose of seepage discharge.
The technical scheme that the utility model adopts is: storehouse basin clay blanket leakage preventing structure; comprise bottom of the reservior earth blanket and storehouse bank concrete slab; described earth blanket and concrete slab below are equipped with transition zone and loaded filter from bottom to top successively; the clay topping is laid in the earth blanket top; it is characterized in that: described earth blanket is arranged at least HDPE composite geo-membrane with the junction of concrete slab; this composite geo-membrane one end is anchored on the concrete slab, and the other end stretches into earth blanket inside.
It is 0.1 times maximal head that described HDPE composite geo-membrane stretches into length in the earth blanket, and this part of horizontal is arranged.
Described HDPE composite geo-membrane is formed by HDPE geomembrane Double-side hot composite terylene acupuncture nonwoven geotextile.
The end that described HDPE geomembrane is anchored in concrete slab is exposed, i.e. the anchored end of HDPE geomembrane composite geotextile not is so that anchoring.
The HDPE composite geo-membrane that is positioned at the top is 1m to the distance of earth blanket upper surface, and is spaced apart 1m between the adjacent twice HDPE composite geo-membrane.
The beneficial effects of the utility model are: the utility model is in the earth blanket work progress, lay one or multi-channel HDPE composite geo-membrane, and composite geo-membrane one end is anchored on the concrete slab, the other end stretches into the earth blanket certain-length, the defective that conventional clay blanket antiseepage exists is carried out reinforcement, increased the seepage paths of earth blanket and concrete slab junction, thereby impermeability and the osmotic stability at this position have greatly been improved, avoid earth blanket and concrete slab junction that seepage failure occurs, reduced to greatest extent leakage, reliability and the safety of leakage preventing structure have been improved, under the condition that does not increase difficulty of construction and construction period, controlled preferably simultaneously construction quality, improve storehouse basin antiseepage and processed reliability and safety, saved construction investment.
Description of drawings
Fig. 1 is arrangement diagram of the present utility model.
The specific embodiment
As shown in Figure 1, the present embodiment concrete structure comprises that bottom of the reservior earth blanket 1 and storehouse bank concrete slab 2(also can be the bituminous concrete panels), described earth blanket 1 and concrete slab 2 belows are equipped with transition zone 3 and loaded filter 4 from bottom to top successively, and clay topping 5 is laid in earth blanket 1 top; Described earth blanket 1 is arranged at least HDPE(high density polyethylene (HDPE) with the junction of concrete slab 2) composite geo-membrane 6, this composite geo-membrane one end is anchored on the concrete slab 2, the other end stretches into earth blanket 1 inside (this part of horizontal is arranged), and stretch into length in the earth blanket 1 and generally get about 0.1 times of maximal head, to increase the seepage paths of earth blanket 1 and concrete slab 2 junctions, improve impermeability and the osmotic stability at this position.
The thickness of earth blanket 1 is general to bear head, pervious layer thickness with it, it is relevant to allow under hydraulic slope, the clay whether the factors such as loaded filter and the control of reservoir leakage amount to be set, generally can be according to 0.05-0.1 times maximal head setting; Concrete slab 2 plays main antiseepage effect to the storehouse bank, and general minimum thickness is 0.3m, and the thickness of concrete slab 2 is 0.3m in this example; Loaded filter 4 plays preferably protective effect to earth material, prevents that earth material runs off, and should satisfy the requirement of anti-filter criterion between the earth material, and thickness is generally 0.5～1.5m, and the thickness of loaded filter 4 is 1m in this example; Transition zone 3 to 4 levelings of loaded filter supporting function, and satisfies anti-filter criterion relation between the loaded filter 4, thickness 1.0～2.0m, and the thickness of transition zone 3 is 1m in this example; Clay topping 5 generally adopts the rock ballast material, and thickness 0.5～1.5m, the thickness of this routine medium clay soil topping 5 are 0.7m.
The HDPE(high density polyethylene (HDPE)) thickness of composite geo-membrane 6 is comprehensively determined according to residing position, head etc., generally is not less than 0.5mm.In this example, HDPE composite geo-membrane 6 is by the compound 300g/m of 0.5～1.0mm high density polyethylene (HDPE) (HDPE) geomembrane Double-side hot
2Terylene acupuncture nonwoven geotextile forms, the end that geomembrane is anchored in concrete slab 2 not composite geotextile so that anchoring.Geomembrane thickness is determined according to the upper storage reservoir maximal head, is got large value when head is large.
In the practice of construction processing procedure, can according to circumstances establish one or multi-channel HDPE composite geo-membrane 6, if only arrange together, then this road composite geo-membrane is arranged in following 1m place, earth blanket 1 top layer; If the vertical layered layout of multiple tracks HDPE composite geo-membrane 6(is set), first (be positioned at the top together) composite geo-membrane is 1m to the distance of earth blanket 1 upper surface, and is spaced apart 1m between the adjacent twice HDPE composite geo-membrane 6; Twice HDPE composite geo-membrane 6 is set in this example altogether.
Claims (5)
1. storehouse basin clay blanket leakage preventing structure; comprise bottom of the reservior earth blanket (1) and storehouse bank concrete slab (2); described earth blanket (1) and concrete slab (2) below are equipped with transition zone (3) and loaded filter (4) from bottom to top successively; clay topping (5) is laid in earth blanket (1) top; it is characterized in that: at least one HDPE composite geo-membrane (6) is arranged in the junction of described earth blanket (1) and concrete slab (2); this composite geo-membrane one end is anchored on the concrete slab (2), and the other end stretches into earth blanket (1) inside.
2. basin clay blanket leakage preventing structure in storehouse according to claim 1 is characterized in that: it is 0.1 times maximal head that described HDPE composite geo-membrane (6) stretches into length in the earth blanket (1), and this part of horizontal is arranged.
3. basin clay blanket leakage preventing structure in storehouse according to claim 1 and 2, it is characterized in that: described HDPE composite geo-membrane (6) is formed by HDPE geomembrane Double-side hot composite terylene acupuncture nonwoven geotextile.
4. basin clay blanket leakage preventing structure in storehouse according to claim 3 is characterized in that: the end that described HDPE geomembrane is anchored in concrete slab (2) is exposed.
5. basin clay blanket leakage preventing structure in storehouse according to claim 1 and 2, it is characterized in that: the HDPE composite geo-membrane (6) that is positioned at the top is 1m to the distance of earth blanket (1) upper surface, and is spaced apart 1m between the adjacent twice HDPE composite geo-membrane (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220099657 CN202767031U (en) | 2012-03-16 | 2012-03-16 | Reservoir basin clay paving and seepage preventing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220099657 CN202767031U (en) | 2012-03-16 | 2012-03-16 | Reservoir basin clay paving and seepage preventing structure |
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| Publication Number | Publication Date |
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| CN202767031U true CN202767031U (en) | 2013-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220099657 Expired - Lifetime CN202767031U (en) | 2012-03-16 | 2012-03-16 | Reservoir basin clay paving and seepage preventing structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726515A (en) * | 2014-01-23 | 2014-04-16 | 北京锄禾环保技术有限公司 | High-density polyethylene (HDPE) membrane impervious structure of rock and soil base liquid storage tank |
| CN107354920A (en) * | 2017-07-20 | 2017-11-17 | 山东大学 | Combination against seepage structure and its construction method for culverts and water gates |
| 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 |
| CN108178316A (en) * | 2017-12-31 | 2018-06-19 | 北京东方园林环境股份有限公司 | A kind of geomembrane anti-seepage layer protection structure of artificial swamp |
-
2012
- 2012-03-16 CN CN 201220099657 patent/CN202767031U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726515A (en) * | 2014-01-23 | 2014-04-16 | 北京锄禾环保技术有限公司 | High-density polyethylene (HDPE) membrane impervious structure of rock and soil base liquid storage tank |
| CN107354920A (en) * | 2017-07-20 | 2017-11-17 | 山东大学 | Combination against seepage structure and its construction method for culverts and water gates |
| CN107354920B (en) * | 2017-07-20 | 2019-09-27 | 山东大学 | Combination against seepage structure and its construction method for culverts and water gates |
| 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 |
| CN108178316A (en) * | 2017-12-31 | 2018-06-19 | 北京东方园林环境股份有限公司 | A kind of geomembrane anti-seepage layer protection structure of artificial swamp |
| CN108178316B (en) * | 2017-12-31 | 2023-07-25 | 北京东方园林环境股份有限公司 | Geomembrane impermeable layer protection structure of constructed wetland |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130306 |