CN206529786U - A kind of high core of earth-rockfill dam foundation structure - Google Patents
A kind of high core of earth-rockfill dam foundation structure Download PDFInfo
- Publication number
- CN206529786U CN206529786U CN201720088552.1U CN201720088552U CN206529786U CN 206529786 U CN206529786 U CN 206529786U CN 201720088552 U CN201720088552 U CN 201720088552U CN 206529786 U CN206529786 U CN 206529786U
- Authority
- CN
- China
- Prior art keywords
- core
- earth
- foundation structure
- rockfill dam
- foundation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model is related to a kind of high core of earth-rockfill dam foundation structure.The purpose of this utility model is to provide the high core of earth-rockfill dam foundation structure that a kind of structure design is simple, construction is convenient, safe and reliable, with stronger practicality.The technical solution of the utility model is：A kind of high core of earth-rockfill dam foundation structure, it is characterised in that：The foundation structure is made up of foundation plane, irrigation gallery, concrete cushion, consolidation grouting layer, contact argillic horizon and grout curtain, the foundation plane is excavated to micro- weathered layer or weak weathered layer and surfacing, it is consolidation grouting layer below foundation plane, the core-wall of concrete cushion, contact argillic horizon and top is followed successively by above foundation plane；At core-wall bottom axis of dam position, the irrigation gallery along dam length direction, irrigation gallery arranged beneath grout curtain are set.The utility model is applied to the similar engineerings such as core wall rockfill dam impervious core foundation structure.
Description
Technical field
The utility model is related to a kind of high core of earth-rockfill dam foundation structure, is primarily adapted for use in core wall rockfill dam impervious core base
The similar engineerings such as plinth structure.
Background technology
Western China hydraulic power potentials enriches, built, building the large hydropower station with the proposed a collection of big storehouse of high dam, due to
The restriction of the condition such as traffic and topographic and geologic, the advantage of high-tech zones is extremely obvious.It is built on western great rivers
Into high-tech zones it is most representative with waxy common wheat, its maximum height of dam reach 261.5m；In the high-tech zones built with double
Jiangkou is representative, and its maximum height of dam is 314 meters, and (300 meters) of the lek dam of exerting for surmounting Tajikistan is turned into the first in the world height
Core wall rockfill dam.In design, process of construction in high-tech zones, the high stress of core-wall bottom is high to fundamental importance, the heart
Foundation of wall can ensure that the safety of dam structure operation using which kind of structure, be always the emphasis and difficulty of Hydraulic and Hydro-Power Engineering's teacher research
Point.
The content of the invention
The technical problems to be solved in the utility model is：For above-mentioned problem there is provided a kind of structure design it is simple,
Convenient, the safe and reliable high core of earth-rockfill dam foundation structure of construction, with stronger practicality.
The technical scheme that the utility model is used is：A kind of high core of earth-rockfill dam foundation structure, it is characterised in that：It is described
Foundation structure is made up of foundation plane, irrigation gallery, concrete cushion, consolidation grouting layer, contact argillic horizon and grout curtain, institute
It is on consolidation grouting layer, foundation plane to state foundation plane and be excavated to below micro- weathered layer or weak weathered layer and surfacing, foundation plane
Side is followed successively by the core-wall of concrete cushion, contact argillic horizon and top；Set at core-wall bottom axis of dam position along big dam length
Spend the irrigation gallery in direction, irrigation gallery arranged beneath grout curtain.
The irrigation gallery is wide 3.5 meters, high 3.5 meters.
The concrete cushion thickness is 1.0~1.5m, using C25 concrete.
The depth of the grouting of the consolidation grouting layer is 5.0~10.0m, and an array pitch is 2.0m × 2.0m.
The contact thickness of clay soil is 1.5~2.5m, and maximum particle diameter is not more than 20mm, small more than 5mm granule contents
In 10%, 60% is no less than less than 0.075mm particle size contents, the particle size content less than 0.005mm is no less than 28%, plasticity index
More than 15.
The grout curtain gos deep into 1.0~3.0m of relative water resisting layer, and spacing is 1.0~2.0m.
The beneficial effects of the utility model are：The utility model for solve high-tech zones core-wall basic constructional design,
The problem of construction is difficult, with reference to the experience of built engineering, it is proposed that a kind of structure design is simple, it is convenient, safe and reliable to construct and
High core of earth-rockfill dam foundation structure with stronger practicality, preferably resolves the setting of high-tech zones core-wall foundation structure
Difficult the problem of, the design and construction for similar core wall rockfill dam provides beneficial reference.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in figure 1, the present embodiment is a kind of high core of earth-rockfill dam foundation structure, the foundation structure is by foundation plane 1, grouting
Gallery 2, concrete cushion 3, consolidation grouting layer 4, contact argillic horizon 5 and grout curtain 7 are constituted.Foundation plane 1 is excavated to gentle breeze
Change layer or weak weathered layer and require that flatness is higher, the lower section of foundation plane 1 is consolidation grouting layer 4, the top of foundation plane 1 is followed successively by mixed
The core-wall 6 of solidifying soil padding 3, contact argillic horizon 5 and top.Irrigation gallery 2, grouting are set at the bottom axis of dam position of core-wall 6
Gallery 2 is arranged along dam length direction.The lower section of irrigation gallery 2 is arranged at intervals grout curtain 7.
Wherein, 2 wide 3.5 meters of irrigation gallery, high 3.5 meters；The thickness of concrete cushion 3 is 1.0~1.5m, using C25 coagulations
Soil；The depth of the grouting of consolidation grouting layer 4 is 5.0~10.0m, and an array pitch is 2.0m × 2.0m；The thickness of contact argillic horizon 5 is
1.5~2.5m, maximum particle diameter is not more than 20mm, many less than 0.075mm particle size contents more than 5mm granule contents less than 10%
In 60%, the particle size content less than 0.005mm is no less than 28%, and plasticity index is more than 15；Grout curtain 7 gos deep into relative water resisting layer
1.0~3.0m, spacing is 1.0~2.0m.
The embodiment of the present embodiment is as follows：
A. foundation plane 1：The requirement of foundation plane 1 is excavated to gentle breeze or weak weathered layer, and surfacing.
B. irrigation gallery 2：Irrigation gallery 2 is arranged at the bottom axis of dam position of core-wall 6, irrigation gallery along dam length direction
2 a width of 3.5m, be 3.5m, the grout curtain for foundation structure.
C. concrete cushion 3：Concrete cushion 3 is arranged at the top of foundation plane 1, and the bottom of core-wall 6 on top is used as core-wall 6
Be stressed directly body, and in lid weight of the construction time as consolidation grouting layer 4；The thickness of concrete cushion 3 is generally 1.0~
1.5m, using C25 concrete.
D. consolidation grouting layer 4：To improve the stress condition of core-wall 6, strengthening its globality, the foundation plane 1 in the bottom of core-wall 6
Lower section sets consolidation grouting layer 4, and the depth of grouting is generally 5.0~10.0m, and an array pitch is generally 2.0 × 2.0m.
E. contact argillic horizon 5：Because core-wall 6 is granular material and concrete cushion 3 is rigid material, both
Modulus of elasticity difference is larger, to improve the stress condition of both contact surfaces, and one layer of contact argillic horizon 5 is set therebetween,
Thickness is generally 1.5~2.5m；Contact argillic horizon 5 should have stronger non-deformability and larger impermeabilisation deformation energy
Power, it is desirable to：
1) 592.2KJ/m is pressed3Compactive effort energy, compactness should be not less than 98%, and compacted dry density is more than 1.72g/cm3, infiltration
Coefficient is less than 1 × 10-6cm/s。
2) maximum particle diameter is not more than 20mm, many less than 0.075mm particle size contents more than 5mm granule contents less than 10%
In 60%, the particle size content less than 0.005mm is no less than 28%, and plasticity index is more than 15.
3) content of organic matter is less than 2%, and water-soluble salt content is less than 3%.
F. grout curtain 7：Grout curtain 7 as dam foundation the curtain wall that intercepts water, should go deep into relative water resisting layer 1.0~
3.0m, spacing is generally 1.0~2.0m.
Claims (6)
1. a kind of high core of earth-rockfill dam foundation structure, it is characterised in that：The foundation structure is by foundation plane (1), irrigation gallery
(2), concrete cushion (3), consolidation grouting layer (4), contact argillic horizon (5) and grout curtain (7) composition, the foundation plane
(1) it is excavated to below micro- weathered layer or weak weathered layer and surfacing, foundation plane (1) as consolidation grouting layer (4), foundation plane
(1) top is followed successively by the core-wall (6) of concrete cushion (3), contact argillic horizon (5) and top；In core-wall (6) bottom axis of dam
Position sets the irrigation gallery (2) along dam length direction, irrigation gallery arranged beneath grout curtain (7).
2. high core of earth-rockfill dam foundation structure according to claim 1, it is characterised in that：The irrigation gallery (2) is wide by 3.5
Rice is high 3.5 meters.
3. high core of earth-rockfill dam foundation structure according to claim 1, it is characterised in that：The concrete cushion (3) is thick
Spend for 1.0~1.5m, using C25 concrete.
4. high core of earth-rockfill dam foundation structure according to claim 1, it is characterised in that：The consolidation grouting layer (4)
The depth of grouting is 5.0~10.0m, and an array pitch is 2.0m × 2.0m.
5. high core of earth-rockfill dam foundation structure according to claim 1, it is characterised in that：The contact argillic horizon (5)
Thickness is 1.5~2.5m, and maximum particle diameter is not more than 20mm, is less than 10% more than 5mm granule contents, contains less than 0.075mm particle diameters
Amount is no less than 60%, and the particle size content less than 0.005mm is no less than 28%, and plasticity index is more than 15.
6. high core of earth-rockfill dam foundation structure according to claim 1, it is characterised in that：The grout curtain (7) is deeply
1.0~3.0m of relative water resisting layer, spacing is 1.0~2.0m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720088552.1U CN206529786U (en) | 2017-01-20 | 2017-01-20 | A kind of high core of earth-rockfill dam foundation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720088552.1U CN206529786U (en) | 2017-01-20 | 2017-01-20 | A kind of high core of earth-rockfill dam foundation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206529786U true CN206529786U (en) | 2017-09-29 |
Family
ID=59921051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720088552.1U Active CN206529786U (en) | 2017-01-20 | 2017-01-20 | A kind of high core of earth-rockfill dam foundation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206529786U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356101A (en) * | 2018-11-23 | 2019-02-19 | 中国电建集团成都勘测设计研究院有限公司 | Seepage prevention of dam founda structure in ultra-deep thick-covering |
-
2017
- 2017-01-20 CN CN201720088552.1U patent/CN206529786U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356101A (en) * | 2018-11-23 | 2019-02-19 | 中国电建集团成都勘测设计研究院有限公司 | Seepage prevention of dam founda structure in ultra-deep thick-covering |
| CN109356101B (en) * | 2018-11-23 | 2023-10-20 | 中国电建集团成都勘测设计研究院有限公司 | Dam foundation seepage-proofing structure in ultra-deep coverage layer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203174619U (en) | Reverse raft concrete terrace | |
| CN203498799U (en) | Prefabricated hollow pipe pile water-facing envelop enclosure | |
| CN109930635A (en) | The model system and test method of single-pile foundation in a kind of silt soil strata | |
| CN203846450U (en) | Riverway retaining wall | |
| CN206529786U (en) | A kind of high core of earth-rockfill dam foundation structure | |
| CN103993580B (en) | A kind of river course barricade | |
| CN105297764A (en) | Offshore wind plant fan single pile foundation and construction method thereof | |
| CN107447774A (en) | Double pile foundation cantilever retaining wall resistance to overturning computational methods | |
| CN203977409U (en) | A kind of prefabricated assembled concrete pile foundation | |
| CN201794053U (en) | Clay seepage resistant ecological riverbed structure | |
| CN205093378U (en) | Ecological fish pond structure | |
| CN203891020U (en) | Bundled type slurry pocket grouting anchor rod | |
| CN203144967U (en) | Connecting structure of high earth rock cofferdam anti-seepage earth material and concrete anti-seepage wall | |
| CN203475457U (en) | Composite pile foundation used for soft soil building foundation | |
| CN104328794B (en) | A kind of narrow base tower four lower limb associating well foundation | |
| CN208088230U (en) | A kind of net dress Ke shell barricades | |
| CN103726490B (en) | A kind of method improving concrete prefabricated hollow pile Compressive Bearing Capacity | |
| CN203256771U (en) | Semi-gravity type column and board combined retaining wall structure | |
| CN205116208U (en) | Offshore wind farm fan single pile basis | |
| CN201981530U (en) | Down hole deep dynamic compaction pile in collapsible loess area | |
| CN209759922U (en) | Mucky soil reinforced foundation | |
| CN103711144A (en) | Alkali-resistant greening variable-inclination-angle type mutually-embedded retaining wall block and construction method for mutually-embedded retaining wall | |
| CN204401570U (en) | A kind of stake formula concrete checkdam structure | |
| CN202500150U (en) | Squeezed branch pile foundation of power transmission line | |
| CN203855963U (en) | Device for increasing pulling force of anchor bolt |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |