CN206143726U - Combined type soil property core -wall rock -fill dam - Google Patents
Combined type soil property core -wall rock -fill dam Download PDFInfo
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- CN206143726U CN206143726U CN201621163209.0U CN201621163209U CN206143726U CN 206143726 U CN206143726 U CN 206143726U CN 201621163209 U CN201621163209 U CN 201621163209U CN 206143726 U CN206143726 U CN 206143726U
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Abstract
The utility model discloses an antiseepage of dam body requirement can be enough satisfied, the combined type soil property core -wall rock -fill dam of the volume of filling of prevention of seepage earth material can be reduced again. A combined type soil property core -wall rock -fill dam, includes the soil property core -wall, the upstream side of soil property core -wall has set gradually upper reaches enrockment district, upper reaches transition layer and upper reaches loaded filter in the same direction as water flow direction, and the downstream side of soil property core -wall has set gradually low reaches loaded filter, low reaches transition layer and low reaches enrockment in the same direction as water flow direction and has distinguished, be provided with composite geomembrane between upper reaches loaded filter and the soil property core -wall. Through setting up composite geomembrane between upper reaches loaded filter and soil property core -wall, make full use of composite geomembrane's prevention of seepage performance when guaranteeing that antiseepage of dam body requires, can reduce the volume of filling of prevention of seepage earth material, has saved the construction investment to the prevention of seepage reliability of dam body has been increased.
Description
Technical field
This utility model belongs to Hydraulic and Hydro-Power Engineering field, and in particular to a kind of combined type Soil-core-wall rock-fill dam.
Background technology
At present, Soil-core-wall rock-fill dam has become build on coating the widely used dam type of high dam, and it includes soil property
Straight core wall rockfill dam and soil property rockfill dam with inclined core, the core-wall of the straight core wall rockfill dam of soil property is located at dam body middle part, soil property sloping core
Enrockment dam core is located at dam body upstream section.
As shown in figure 1, existing Soil-core-wall rock-fill dam, described including the soil property core-wall 50 being arranged on foundation plane 90
The upstream side Parallel to the flow direction of soil property core-wall 50 is disposed with upstream rockfill area 10, upstream transition layer 20 and upstream loaded filter
30, the downstream Parallel to the flow direction of soil property core-wall 50 is disposed with downstream loaded filter 60, downstream transition layer 70 and downstream enrockment
Area 80.Depending on dam material and dam foundation geology condition, the cross dimensions of impervious body is according to antiseepage soil for the dam slope of Soil-core-wall rock-fill dam
The performances such as permissive permeability gradient, plasticity, the cracking resistance of material, and consider the requirement of dam site earthquake intensity and mechanical execution determining.
At present built or in the Soil-core-wall rock-fill dam built in order to meet the antiseepage requirement of dam body, impervious body volume is larger,
Top width is generally 4～8m, and bottom width is generally 1/2 head height, and core-wall upstream and downstream slope ratio is 1:0.20～1:0.25, it is required anti-
Ooze earth material more.However, when the dispersion of impermeable soil field, transportation range be remote, impermeable soil granule is partially thin or partially thick, preventing
Oozing earth material can not directly go up dam, and the advantage for building Soil-core-wall rock-fill dam is not present, and engineering cost is high.
Utility model content
The technical problems to be solved in the utility model is to provide one kind can either meet dam body seepage requirement, can reduce again
The combined type Soil-core-wall rock-fill dam of the amount of filling of impermeable soil.
This utility model solves the technical scheme that its technical problem adopted：A kind of combined type Soil-core-wall rock-fill dam,
Including soil property core-wall, the upstream side Parallel to the flow direction of the soil property core-wall be disposed with upstream rockfill area, upstream transition layer and
Upstream loaded filter, the downstream Parallel to the flow direction of soil property core-wall is disposed with downstream loaded filter, downstream transition layer and downstream heap
Stone area, between the upstream loaded filter and soil property core-wall composite geo-membrane is provided with.
It is further that the soil property core-wall is the straight core-wall of soil property.
It is further that the lower end of the composite geo-membrane is extended to by passing through between upstream loaded filter and foundation plane
The bottom of upstream transition layer.
It is further that the destruction tension of the composite geo-membrane is not less than 12MPa, and fracture rate elongation is not less than
30%, infiltration coefficient≤10-11cm/s。
It is further to be reserved with compensation section on the composite geo-membrane.
It is further, it is reserved one at interval of 15～25m along the elevation direction of soil property core-wall on the composite geo-membrane
Compensation section.
It is further that the compensation section is the doubling pleated structure on composite geo-membrane, the doubling fold knot
Structure is in N fonts or the font of falling N.
The beneficial effects of the utility model are：By arranging composite geo-membrane between upstream loaded filter and soil property core-wall,
The barrier performance of composite geo-membrane is made full use of, while ensureing that dam body seepage is required, filling for impermeable soil can be reduced
Amount, saves construction investment, and increased the antiseepage reliability of dam body.Further, since arranging composite geo-membrane makes soil property core-wall
Thinning, the arching of core-wall weakens, and adds the drawing-resistant function of composite geo-membrane, to the anti-hydraulic fracture of core-wall, Sliding stability of dam slope,
And the ability such as seepage prevention of core wall body cracking resistance has enhancing, so as to effectively reduce engineering risk.
Description of the drawings
Fig. 1 is the enforcement structural representation of existing Soil-core-wall rock-fill dam；
Fig. 2 is enforcement structural representation of the present utility model；
Fig. 3 is the partial enlarged drawing in Fig. 2 at A；
It is labeled as in figure：Upstream rockfill area 10, upstream transition layer 20, upstream loaded filter 30, composite geo-membrane 40, compensation section
41st, soil property core-wall 50, downstream loaded filter 60, downstream transition layer 70, downstream rockfill area 80, foundation plane 90.
Specific embodiment
Below in conjunction with the accompanying drawings the utility model is described in further detail.
As shown in Fig. 2 a kind of combined type Soil-core-wall rock-fill dam, including soil property core-wall 50, the soil property core-wall 50 it is upper
Trip side Parallel to the flow direction is disposed with upstream rockfill area 10, upstream transition layer 20 and upstream loaded filter 30, soil property core-wall 50
Downstream Parallel to the flow direction is disposed with downstream loaded filter 60, downstream transition layer 70 and downstream rockfill area 80, and the upstream is anti-
Composite geo-membrane 40 is provided between filtering layer 30 and soil property core-wall 50.Wherein, composite geo-membrane 40 is also called composite impermeable membrane, leads to
Often it is divided into geomembrane and the film of two cloth one, high with intensity, preferably, deformation modulus is big, and acid and alkali-resistance is anticorrosive, resistance to for extension property
It is aging, the features such as barrier performance is good.The composite geo-membrane 40 being arranged between upstream loaded filter 30 and soil property core-wall 50, not only protects
The barrier performance of the combined type Soil-core-wall rock-fill dam is demonstrate,proved, and has reduced the amount of filling of impermeable soil, reduced this and be combined
Dependency of the formula Soil-core-wall rock-fill dam to impermeable soil.When arranging composite geo-membrane 40, basal plane levelling first ensures smooth-going, so
Laid again afterwards, should be protected during laying composite geo-membrane 40, it is to avoid pierce through destruction.
It is preferred that being not less than 12MPa using destruction tension, fracture rate elongation is not less than 30%, infiltration coefficient≤10-11cm/s
Composite geo-membrane 40 be arranged between upstream loaded filter 30 and soil property core-wall 50.
Specifically, the soil property core-wall 50 is the straight core-wall of soil property, and the combined type Soil-core-wall rock-fill dam is the straight core-wall of soil property
Rock-fill dams.
For the lower end of more preferable fixed composite geo-membrane 40, and improve the barrier properties between upstream loaded filter 30 and the dam foundation
Can, then as shown in Fig. 2 the lower end of the composite geo-membrane 40 between upstream loaded filter 30 and foundation plane 90 by passing through, and extend
To the bottom of upstream transition layer 20.
In order to adapt to the deformation of dam body, it is to avoid composite geo-membrane 40 because of dam deformation by drawing crack, with reference to Fig. 2 and Fig. 3 institutes
Show, compensation section 41 is reserved with the composite geo-membrane 40.The structure of the compensation section 41 can be for various, such as：Waveform
Pleated structure, V-shaped pleated structure, M shapes pleated structure or coil configuration etc., the structure preferably shown in Fig. 3, i.e. compensation section
41 is the doubling pleated structure on composite geo-membrane 40, and the doubling pleated structure is in N fonts or the font of falling N.
On the basis of the above, it is described compound in order to further improve the ability that composite geo-membrane 40 adapts to the deformation of dam body
A compensation section 41 is reserved on geomembrane 40 at interval of 15～25m along the elevation direction of soil property core-wall 50.
Embodiment
Build in supratectal certain combined type Soil-core-wall rock-fill dam, maximum height of dam is 150m；
The combined type Soil-core-wall rock-fill dam, including soil property core-wall 50, the upstream side of the soil property core-wall 50 side of stream downstream
To upstream rockfill area 10, upstream transition layer 20 and upstream loaded filter 30 is disposed with, the downstream of soil property core-wall 50 is flowed downstream
Direction is disposed with downstream loaded filter 60, downstream transition layer 70 and downstream rockfill area 80, the upstream loaded filter 30 and soil property
Composite geo-membrane 40 is provided between core-wall 50；The thickness of composite geo-membrane 40 is 1.5mm, and infiltration coefficient is 10-11cm/s；
The top width of soil property core-wall 50 be 6m, bottom width is 49.9m, thereon, downstream gradient be 1:0.15, core-wall list width antiseepage
The side's of filling amount of earth material is 3794m3；
The lower end of composite geo-membrane 40 extends to upstream transition layer by passing through between upstream loaded filter 30 and foundation plane 90
20 bottom；A compensation section 41, the benefit are reserved on composite geo-membrane 40 at interval of 20m along the elevation direction of soil property core-wall 50
Portion 41 is repaid to reserve 2m and the font of the falling N doubling pleated structure being folded to form, the doubling pleated structure on composite geo-membrane 40
Long 1m.
If building existing Soil-core-wall rock-fill dam of the maximum height of dam for 150m, the top width of its soil property core-wall 50 on the cover layer
For 6m, bottom width 79.25m, the core-wall upstream and downstream gradient is 1:0.25, the side's of filling amount of core-wall list width impermeable soil is 6006m3。
Comparatively speaking, the side's of filling amount of impermeable soil of the present utility model reduces 37%, greatly reduces engineering cost, and protects
Environment.
Claims (7)
1. a kind of combined type Soil-core-wall rock-fill dam, including soil property core-wall (50), the upstream side of the soil property core-wall (50) is downstream
Stream direction is disposed with upstream rockfill area (10), upstream transition layer (20) and upstream loaded filter (30), soil property core-wall (50)
Downstream Parallel to the flow direction is disposed with downstream loaded filter (60), downstream transition layer (70) and downstream rockfill area (80), and it is special
Levy and be：Composite geo-membrane (40) is provided between the upstream loaded filter (30) and soil property core-wall (50).
2. a kind of combined type Soil-core-wall rock-fill dam as claimed in claim 1, it is characterised in that：The soil property core-wall (50) is
The straight core-wall of soil property.
3. a kind of combined type Soil-core-wall rock-fill dam as claimed in claim 1, it is characterised in that：The composite geo-membrane (40)
Lower end by passing through between upstream loaded filter (30) and foundation plane (90), and extend to the bottom of upstream transition layer (20).
4. a kind of combined type Soil-core-wall rock-fill dam as claimed in claim 1, it is characterised in that：The composite geo-membrane (40)
Destruction tension be not less than 12MPa, fracture rate elongation is not less than 30%, infiltration coefficient≤10-11cm/s。
5. a kind of combined type Soil-core-wall rock-fill dam as described in claim 1,2,3 or 4, it is characterised in that：The composite earth
Compensation section (41) is reserved with work film (40).
6. a kind of combined type Soil-core-wall rock-fill dam as claimed in claim 5, it is characterised in that：The composite geo-membrane (40)
On along the elevation direction of soil property core-wall (50) at interval of 15～25m reserve a compensation section (41).
7. a kind of combined type Soil-core-wall rock-fill dam as claimed in claim 6, it is characterised in that：The compensation section (41) is to set
Doubling pleated structure on composite geo-membrane (40), the doubling pleated structure is in N fonts or the font of falling N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621163209.0U CN206143726U (en) | 2016-11-01 | 2016-11-01 | Combined type soil property core -wall rock -fill dam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621163209.0U CN206143726U (en) | 2016-11-01 | 2016-11-01 | Combined type soil property core -wall rock -fill dam |
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| Publication Number | Publication Date |
|---|---|
| CN206143726U true CN206143726U (en) | 2017-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621163209.0U Active CN206143726U (en) | 2016-11-01 | 2016-11-01 | Combined type soil property core -wall rock -fill dam |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107044109A (en) * | 2017-04-26 | 2017-08-15 | 中国电建集团西北勘测设计研究院有限公司 | A kind of geomembrane anti-seepage sand-gravel dam |
| CN108589661A (en) * | 2018-03-13 | 2018-09-28 | 中国电建集团中南勘测设计研究院有限公司 | A kind of core wall rockfill dam |
| CN110004883A (en) * | 2019-02-11 | 2019-07-12 | 中国水电基础局有限公司 | A kind of compound core-wall structure of earth and rockfill dam and construction method |
| CN110939104A (en) * | 2019-12-27 | 2020-03-31 | 中水北方勘测设计研究有限责任公司 | Mixed seepage-proofing dam |
-
2016
- 2016-11-01 CN CN201621163209.0U patent/CN206143726U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107044109A (en) * | 2017-04-26 | 2017-08-15 | 中国电建集团西北勘测设计研究院有限公司 | A kind of geomembrane anti-seepage sand-gravel dam |
| CN108589661A (en) * | 2018-03-13 | 2018-09-28 | 中国电建集团中南勘测设计研究院有限公司 | A kind of core wall rockfill dam |
| CN108589661B (en) * | 2018-03-13 | 2023-06-13 | 中国电建集团中南勘测设计研究院有限公司 | Core wall rock-fill dam |
| CN110004883A (en) * | 2019-02-11 | 2019-07-12 | 中国水电基础局有限公司 | A kind of compound core-wall structure of earth and rockfill dam and construction method |
| CN110004883B (en) * | 2019-02-11 | 2024-03-26 | 中国水电基础局有限公司 | Composite core wall structure of earth-rock dam and construction method |
| CN110939104A (en) * | 2019-12-27 | 2020-03-31 | 中水北方勘测设计研究有限责任公司 | Mixed seepage-proofing dam |
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