CN206157755U - Carry on anti - seepage prevention of dam foundation system of straining structure of double -deck level in deep overburden high dam - Google Patents
Carry on anti - seepage prevention of dam foundation system of straining structure of double -deck level in deep overburden high dam Download PDFInfo
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- CN206157755U CN206157755U CN201621205022.2U CN201621205022U CN206157755U CN 206157755 U CN206157755 U CN 206157755U CN 201621205022 U CN201621205022 U CN 201621205022U CN 206157755 U CN206157755 U CN 206157755U
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Abstract
The utility model discloses a carry on anti - seepage prevention of dam foundation system of straining structure of double -deck level in deep overburden high dam belongs to the design of hydraulic and hydroelectric engineering building and builds technical field. The utility model provides a build fastly, rare clay quantity obviously reduces, the obvious carry on anti - seepage prevention of dam foundation system of straining structure of double -deck level in deep overburden high dam who reduces of construction cost. The seepage prevention of dam foundation system including the excavation foundation ditch, arrange the clay core in the dam body and arrange the concrete cut -pff wall in deep overburden, the seepage prevention of dam foundation system still include foundation ditch rockfill material backfill layer, foundation ditch rockfill material backfill layer arrange the excavation foundation ditch in, clay core arrange foundation ditch rockfill material backfill layer's top, the concrete cut -pff wall upwards pass along vertical foundation ditch rockfill material backfill layer after imbed clay core in.
Description
Technical field
This utility model is related to a kind of seepage prevention of dam founda system, more particularly, to carrying Double-layer water in a kind of deeply covered layer high dam
The seepage prevention of dam founda system of filter structure of redressing, belongs to Hydraulic and Hydro-Power Engineering Building Design building technology field.
Background technology
In recent years, as country increases the hydroelectric development dynamics to western remote districts, building for big a collection of high dam has been promoted
If.Often there is the deep situation of coating again in these rivers for being located in high-mountain gorge areas.High dam is built on deeply covered layer
Leakage preventing structure be one of key technology of engineering construction.
At present, the leakage preventing structure of high dam is built on deeply covered layer, it is vertical anti-that the native core-wall of majority employing is connected with cut-pff wall
Being arranged on excavation of foundation pit face the connecting portion for oozing structure, native core-wall and cut-pff wall, i.e., the native core-wall part of whole dam body is in more
Pyramid is faced upwards by excavation of foundation pit and extends to dam body top.Such leakage preventing structure pattern is abundant in precordial distress material source
Project Areas application, though having preferable economic benefit, will also cause the environmental problem such as Zhan Yong ﹑ vegetation deteriorations ploughed.And
In precordial distress material source starvation areas, also by the Chang ﹑ investments increase of acquisition difficulty Jia great ﹑ haul distances Jia for causing engineering precordial distress.
Utility model content
Technical problem to be solved in the utility model is：There is provided a kind of construction speed fast, rare clay consumption substantially subtracts
It is few, the seepage prevention of dam founda system of double-layer horizontal anti-filter structure is carried in the deeply covered layer high dam that construction cost is substantially reduced.
It is to solve the technical scheme that adopted of above-mentioned technical problem：Carry Double-layer water in a kind of deeply covered layer high dam to redress
The seepage prevention of dam founda system of filter structure, including excavation pit, the clay core wall that is arranged in dam body and be arranged in deeply covered layer
Concrete cut, described seepage prevention of dam founda system also includes that foundation ditch stockpile backfills layer, described foundation ditch stockpile backfill layer
It is arranged in described excavation pit, described clay core wall is arranged in the top that the foundation ditch stockpile backfills layer, described
Concrete cut is embedded in described clay core wall vertically upwards through after described foundation ditch stockpile backfill layer.
The beneficial effects of the utility model are：The application between excavation pit and clay core wall by arranging one layer of foundation ditch
Stockpile backfills layer, and described concrete cut is embedded in through after described foundation ditch stockpile backfill layer vertically upwards
The effectively connection of antiseepage is realized in described clay core wall.According to diminishing pyramid principles upwards, due to gluing
After the maximum lower middle portion of native core-wall clay amount is replaced it by described foundation ditch stockpile backfill layer, using general foundation ditch
Stockpile backfill layer constitutes a part for dam body, so, not only can significantly improve the construction speed of the dam body, but also
Can the substantial amounts of consumption for reducing rare clay, so as to reach the purpose for significantly reducing construction cost.
It is further that described foundation ditch stockpile backfill layer includes that thickness is adapted respectively with the excavation pit depth
Backfill floor I areas and backfill floor II areas, described backfill floor II areas are with described backfill floor I areas with described concrete cut
On the basis of along both sides outwards order arrange.
Such scheme it is preferable that, it is described backfill floor II areas and the concrete cut between there also is provided it is viscous
Native transition back filled region.
It is further that the excavation pit and foundation ditch stockpile in the concrete cut upstream side is backfilled between layer also
Loaded filter is disposed with, the excavation pit and foundation ditch stockpile in the concrete cut downstream is backfilled and there also is provided between layer
Anti-filter drainage blanket.
Such scheme it is preferable that, backfill between layer and the clay core wall in the foundation ditch stockpile, Yi Jisuo
State the anti-seepage geomembrane that integrative-structure is also respectively disposed between clay core wall and described concrete cut.
It is further to there also is provided thickness below the anti-seepage geomembrane of the concrete cut upstream side not low
In the thick padding layers of 18 ㎝, in the lower section also order of the anti-seepage geomembrane in the concrete cut downstream bedding and padding are disposed with
Layer, anti-filter I layer and anti-filter II layer, the anti-filter I layer and the anti-filter II layer thickness it is corresponding with dam body downstream respectively under
Trip loaded filter is adapted.
Such scheme it is preferable that, be embedded in the clay core wall in concrete cut on also cover be connected to contact
Clay cap, described clay core wall is connected with the top of the concrete cut by described contact clay cap transition.
It is further that also order is disposed with upstream loaded filter, upstream transition layer in the upstream side of the clay core wall
With upstream heap rock layers；Downstream loaded filter, downstream transition layer and downstream heap are disposed with the downstream order of the clay core wall
Rock layers.
It is further that the upstream ballast extended along updrift side is there also is provided in the middle and lower part of the upstream heap rock layers
Layer, the downstream ballast layer extended along downstream is disposed with the middle and lower part of the downstream heap rock layers.
It is further to there also is provided the upstream loose stone shield along domatic extension in the middle and upper part of the upstream heap rock layers
Slope, in the middle and upper part of the downstream heap rock layers downstream dry stone pitching along domatic extension is disposed with.
Description of the drawings
Fig. 1 is the cross-sectional of the seepage prevention of dam founda system of carrying double-layer horizontal anti-filter structure in this utility model deeply covered layer high dam
Structural representation.
It is labeled as in figure：Excavation pit 1, dam body 2, clay core wall 3, deeply covered layer 4, concrete cut 5, foundation ditch enrockment
Material backfill floor 6, backfill floor I areas 7, backfill floor II areas 8, clay transition back filled region 9, loaded filter 10, anti-filter drainage blanket 11, antiseepage soil
Work film 12, padding layer 13, anti-filter I layer 14, anti-filter II layer 15, downstream loaded filter 16, contact clay cap 17, upstream loaded filter 18,
Upstream transition layer 19, upstream heap rock layers 20, downstream transition layer 21, downstream heap rock layers 22, upstream ballast layer 23, downstream ballast layer
24th, upstream dry stone pitching 25, downstream dry stone pitching 26.
Specific embodiment
It is as shown in Figure 1 that a kind of construction speed that this utility model is provided is fast, rare clay consumption is significantly reduced, and is built into
The seepage prevention of dam founda system of double-layer horizontal anti-filter structure is carried in this deeply covered layer high dam for substantially reducing.Described seepage prevention of dam founda system
System includes excavation pit 1, the clay core wall 3 being arranged in dam body 2 and the concrete cut 5 being arranged in deeply covered layer 4, institute
The seepage prevention of dam founda system stated also includes that foundation ditch stockpile backfills layer 6, and described foundation ditch stockpile backfill layer 6 is arranged in described opening
Dig in foundation ditch 1, described clay core wall 3 is arranged in the top that the foundation ditch stockpile backfills layer 6, described concrete cut
5 are embedded in described clay core wall 3 vertically upwards through after described foundation ditch stockpile backfill layer 6.The application is by opening
Dig between foundation ditch 1 and clay core wall 3 and one layer of foundation ditch stockpile backfill layer 6 is set, and make described concrete cut 5 vertically
It is upward through after described foundation ditch stockpile backfill layer 6 and is embedded in described clay core wall 3 to realize the effectively connection of antiseepage.Root
According to diminishing pyramid principles upwards, due to clay core wall 3 is being passed through into described with clay amount maximum lower middle portion
After foundation ditch stockpile backfill layer 6 is replaced it, a part for dam body 2 is constituted using general foundation ditch stockpile backfill layer 6, so,
Not only can significantly improve the construction speed of the dam body 2, but also can the substantial amounts of consumption for reducing rare clay, so as to reach
To the purpose for significantly reducing construction cost.
In above-mentioned embodiment, according to live needs, the prescription require in conjunction with construction speed, built a dam, the application
Described foundation ditch stockpile backfill layer 6 is set to include the backfill layer I that thickness is adapted respectively with the depth of the excavation pit 1
Area 7 and backfill floor II areas 8, just make described backfill floor II areas 8 with described backfill floor I areas 7 with described concrete cut 5
On the basis of along both sides outwards order arrange；Arrange between floor II areas 8 and the concrete cut 5 in the backfill again simultaneously and glue
Native transition back filled region 9.So, just can be according to field condition, the prescription for requiring with reference to construction speed and building a dam point is first
After built, build speed to improve to greatest extent, to greatest extent ensure build quality.
Meanwhile, according to the construction requirements of dam, in order to improve the anti-seepage effect of dam body to greatest extent, the application is described
Loaded filter 10 is there also is provided between the excavation pit 1 of the upstream side of concrete cut 5 and foundation ditch stockpile backfill layer 6, described
Anti-filter drainage blanket 11 is there also is provided between the excavation pit 1 in the downstream of concrete cut 5 and foundation ditch stockpile backfill layer 6；
Between the foundation ditch stockpile backfill layer 6 and the clay core wall 3, and the clay core wall 3 and described concrete anti-seepage
The anti-seepage geomembrane 12 of integrative-structure is also respectively disposed between wall 5；Concrete cut in the embedded clay core wall 3
Also cover is connected to contact clay cap 17 on 5, and described clay core wall 3 is connect with the top of the concrete cut 5 by described
Contact bonding soil cap 17 transition connection.Now, in order to avoid described anti-seepage geomembrane 12 during the use of postorder because dam body become
Change and be torn, there also is provided thickness in the lower section of the anti-seepage geomembrane 12 of the upstream side of the concrete cut 5 and be not less than 18
㎝ thick padding layer 13, in the lower section also order of the anti-seepage geomembrane 12 in the downstream of the concrete cut 5 pad is disposed with
The thickness of the bed of material 13, anti-filter I layer 14 and anti-filter II layer 15, the anti-filter I layer 14 and the anti-filter II layer 15 respectively with dam body under
The corresponding downstream loaded filter 16 in trip side is adapted.
Further, require that also order is disposed with upstream in the upstream side of the clay core wall 3 according to the construction of dam
Loaded filter 18, upstream transition layer 19 and upstream heap rock layers 20；Downstream is disposed with the downstream of the clay core wall 3 also order
Loaded filter 16, downstream transition layer 21 and downstream heap rock layers 22；There also is provided along upstream in the middle and lower part of the upstream heap rock layers 20
The upstream ballast layer 23 that direction extends, the downstream ballast extended along downstream is also disposed with the middle and lower part of the downstream heap rock layers 22
Layer 24；The upstream dry stone pitching 25 along domatic extension is there also is provided in the middle and upper part of the upstream heap rock layers 20, under described
The middle and upper part of trip heap rock layers 22 is also disposed with the downstream dry stone pitching 26 along domatic extension.So just can ensure that the complete of dam body
Whole property, safety and ageing.
In sum, after using the seepage prevention of dam founda system of the application, with current existing clay core wall and concrete anti-seepage
The connecting portion of wall is arranged on the vertical seepage control pattern in dam foundation excavation face and compares. and the seepage prevention of dam founda system is by clay core wall and coagulation
The connecting portion of native cut-pff wall is arranged at the cope level of foundation ditch stockpile backfill layer, such that it is able to reduce clay core wall earth material
Consumption reach Po Huai ﹑ of occupancy and vegetation that ﹑ Shang 30% Yi reduces arable land and be conducive to environmental protection, social benefit substantially, also
Construction investment can be reduced, economic benefit is obvious.
Claims (10)
1. the seepage prevention of dam founda system of double-layer horizontal anti-filter structure, including excavation pit (1), cloth are carried in a kind of deeply covered layer high dam
Put the clay core wall (3) in dam body (2) and the concrete cut (5) being arranged in deeply covered layer (4), it is characterised in that：
Described seepage prevention of dam founda system also includes foundation ditch stockpile backfill layer (6), and described foundation ditch stockpile backfill layer (6) is arranged in institute
In the excavation pit (1) stated, described clay core wall (3) is arranged in the top of foundation ditch stockpile backfill layer (6), described
Concrete cut (5) is embedded in afterwards described clay core wall (3) through described foundation ditch stockpile backfill layer (6) vertically upwards
It is interior.
2. the seepage prevention of dam founda system of double-layer horizontal anti-filter structure is carried in deeply covered layer high dam according to claim 1, its
It is characterised by：Described foundation ditch stockpile backfill layer (6) includes returning that thickness is adapted respectively with the excavation pit (1) depth
Packing course I areas (7) and backfill floor II areas (8), described backfill floor II areas (8) and described backfill floor I areas (7) is with described coagulation
Along both sides, outwards order is arranged on the basis of native cut-pff wall (5).
3. the seepage prevention of dam founda system of double-layer horizontal anti-filter structure is carried in deeply covered layer high dam according to claim 2, its
It is characterised by：Clay transition back filled region is there also is provided between backfill floor II areas (8) and the concrete cut (5)
(9)。
4. the seepage prevention of dam founda system of double-layer horizontal anti-filter structure is carried in the deeply covered layer high dam according to claim 1,2 or 3
System, it is characterised in that：The concrete cut (5) upstream side excavation pit (1) and foundation ditch stockpile backfill layer (6) it
Between there also is provided loaded filter (10), excavation pit (1) and the foundation ditch stockpile in the concrete cut (5) downstream is backfilled
Anti-filter drainage blanket (11) is there also is provided between layer (6).
5. the seepage prevention of dam founda system of double-layer horizontal anti-filter structure is carried in deeply covered layer high dam according to claim 4, its
It is characterised by：The foundation ditch stockpile backfill layer (6) and the clay core wall (3) between, and the clay core wall (3) with
The anti-seepage geomembrane (12) of integrative-structure is also respectively disposed between described concrete cut (5).
6. the seepage prevention of dam founda system of double-layer horizontal anti-filter structure is carried in deeply covered layer high dam according to claim 5, its
It is characterised by：Thickness is there also is provided below the anti-seepage geomembrane (12) of the concrete cut (5) upstream side to be not less than
18 ㎝ thick padding layer (13), in the lower section also order of the anti-seepage geomembrane (12) in the concrete cut (5) downstream
It is disposed with padding layer (13), anti-filter I layer (14) and anti-filter II layer (15), the anti-filter I layer (14) and the anti-filter II layer (15)
Thickness respectively downstream corresponding with dam body downstream loaded filter (16) be adapted.
7. the seepage prevention of dam founda system of double-layer horizontal anti-filter structure is carried in deeply covered layer high dam according to claim 4, its
It is characterised by：Also cover is connected to contact clay cap (17), institute on the concrete cut (5) being embedded in the clay core wall (3)
The clay core wall (3) stated is connected with the top of the concrete cut (5) by described contact clay cap (17) transition.
8. the seepage prevention of dam founda system of double-layer horizontal anti-filter structure is carried in deeply covered layer high dam according to claim 1, its
It is characterised by：Upstream loaded filter (18), upstream transition layer (19) are disposed with the upstream side also order of the clay core wall (3)
With upstream heap rock layers (20)；Downstream loaded filter (16), downstream transition are disposed with the downstream order of the clay core wall (3)
Layer (21) and downstream heap rock layers (22).
9. the seepage prevention of dam founda system of double-layer horizontal anti-filter structure is carried in deeply covered layer high dam according to claim 8, its
It is characterised by：Upstream ballast layer (23) extended along updrift side is there also is provided in the middle and lower part of the upstream heap rock layers (20),
Downstream ballast layer (24) extended along downstream is disposed with the middle and lower part of the downstream heap rock layers (22).
10. the seepage prevention of dam founda system of double-layer horizontal anti-filter structure is carried in deeply covered layer high dam according to claim 9, its
It is characterised by：The upstream dry stone pitching (25) along domatic extension is there also is provided in the middle and upper part of the upstream heap rock layers (20),
The downstream dry stone pitching (26) along domatic extension is disposed with the middle and upper part of the downstream heap rock layers (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621205022.2U CN206157755U (en) | 2016-11-08 | 2016-11-08 | Carry on anti - seepage prevention of dam foundation system of straining structure of double -deck level in deep overburden high dam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621205022.2U CN206157755U (en) | 2016-11-08 | 2016-11-08 | Carry on anti - seepage prevention of dam foundation system of straining structure of double -deck level in deep overburden high dam |
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| CN206157755U true CN206157755U (en) | 2017-05-10 |
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| CN201621205022.2U Active CN206157755U (en) | 2016-11-08 | 2016-11-08 | Carry on anti - seepage prevention of dam foundation system of straining structure of double -deck level in deep overburden high dam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109371919A (en) * | 2018-11-30 | 2019-02-22 | 中国电建集团成都勘测设计研究院有限公司 | The native stone water-retaining structure of seepage prevention of core wall |
-
2016
- 2016-11-08 CN CN201621205022.2U patent/CN206157755U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109371919A (en) * | 2018-11-30 | 2019-02-22 | 中国电建集团成都勘测设计研究院有限公司 | The native stone water-retaining structure of seepage prevention of core wall |
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