CN204875691U - Structure for improving seepage-proofing performance of contact surface of earth core rock-fill dam - Google Patents
Structure for improving seepage-proofing performance of contact surface of earth core rock-fill dam Download PDFInfo
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- CN204875691U CN204875691U CN201520380575.0U CN201520380575U CN204875691U CN 204875691 U CN204875691 U CN 204875691U CN 201520380575 U CN201520380575 U CN 201520380575U CN 204875691 U CN204875691 U CN 204875691U
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- concrete
- contact surface
- dam
- pedestal
- core wall
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- 239000004567 concrete Substances 0.000 claims abstract description 78
- 239000000463 material Substances 0.000 claims abstract description 29
- 238000004347 surface barrier Methods 0.000 claims abstract description 17
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 239000010949 copper Substances 0.000 claims abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 230000007704 transition Effects 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000002689 soil Substances 0.000 claims description 30
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 29
- 239000011295 pitch Substances 0.000 claims description 21
- 235000003283 Pachira macrocarpa Nutrition 0.000 claims description 12
- 241001083492 Trapa Species 0.000 claims description 12
- 235000014364 Trapa natans Nutrition 0.000 claims description 12
- 235000009165 saligot Nutrition 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 6
- 210000000988 bone and bone Anatomy 0.000 claims description 4
- 239000011384 asphalt concrete Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000010426 asphalt Substances 0.000 abstract 2
- 239000004519 grease Substances 0.000 abstract 2
- 230000002265 prevention Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 7
- 239000004927 clay Substances 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- Revetment (AREA)
Abstract
The utility model discloses an improve structure of earth core rock-fill dam contact surface barrier properties. The dam comprises a dam body, wherein the center of the dam body is provided with impermeable earth materials (& lt 5 & gt), and two sides of the impermeable earth materials are sequentially provided with a filter material (& lt 6 & gt), a transition material (& lt 7 & gt) and a dam shell rockfill material (& lt 8 & gt); the bottom of the impervious concrete material in the center of the dam body is located on base concrete (& lt 1 & gt), the top surface of the base concrete is coated with asphalt horseshoe grease (& lt 4 & gt), the bottom of the impervious concrete material is provided with an asphalt concrete slab (& lt 2 & gt) vertical to the base concrete, and a copper sheet water stop (& lt 3 & gt) is arranged between the asphalt concrete slab and the base concrete. The utility model discloses a set up the asphalt concrete slab of certain row number and length on heart wall base concrete surface and play the effect that extends prevention of seepage heart wall seepage footpath. Meanwhile, asphalt horseshoe grease is coated on the surface of the base concrete, so that the tight contact between the impermeable concrete and the concrete contact surface is ensured. The deformation capability of the core wall contact surface is improved, and the core wall has good seepage-proof and earthquake-proof performance. [ b ]
Description
Technical field
The utility model relates to a kind of structure improving native core wall rockfill dam contact surface barrier performance, belongs to Hydraulic and Hydro-Power Engineering technical field.
Background technology
Loose rock dam are built a dam owing to can exploit local material nearby, so economic advantages are obvious, are a kind of conventional dam type in Hydraulic and Hydro-Power Engineering.The impervious body of core wall rockfill dam is impermeable soil, connects with pedestal concrete at position, riverbed and bank slope.Simultaneously for improving core-wall and concrete contact site erosion resistibility and cracking resistance, prevent core-wall and concrete is de-splits, therefore between impermeable soil and concrete surface, fill the clay that contacts with good plasticity and stickiness, the deformability of raising core-wall.But be in operation and find that earth material and concrete joint position easily produce concentrated seepage flow, uneven sedimentation, cause contact surface locally to occur to ftracture or and then cause seepage along contact surface.Index of plasticity simultaneously owing to contacting the more conventional impermeable soil of clay is higher, transmission coefficient is less, require stricter to glutinous grain, therefore be often difficult in some hydroelectric projects find the contact clay material met the demands, some engineering even needs outsourcing to contact clay material.So the processing mode connect of watertight core and concrete surface becomes the key factor whether such dam type is set up and had economy.
Utility model content
The purpose of this utility model is, provides a kind of structure improving native core wall rockfill dam contact surface barrier performance, to improve the deformability of core-wall contact surface, makes it have and good anti-ly blends anti-seismic performance.
The technical solution of the utility model:
Improve a structure for native core wall rockfill dam contact surface barrier performance, comprise dam body, dam body center is provided with impermeable soil, and impermeable soil both sides are provided with filter material, Transition Materials and dam shell stockpile successively; Be seated on pedestal concrete bottom the impermeable soil at dam body center, pedestal top of concrete scribbles pitch water chestnut fat, is provided with perpendicular to the concrete bituminous concrete plate of pedestal, is provided with copper sheet sealing between bituminous concrete plate and pedestal concrete bottom impermeable soil.
In the structure of aforementioned raising native core wall rockfill dam contact surface barrier performance, described pedestal concrete strength is not less than C20.
In the structure of aforementioned raising native core wall rockfill dam contact surface barrier performance, at least two blocks of bituminous concrete plates are provided with bottom described impermeable soil, spacing between two blocks of bituminous concrete plates is not less than 2.0m, bituminous concrete plate thickness is 0.4 ~ 1.5m, and the length that bituminous concrete plate stretches into impermeable soil inside is not less than 3.0m.
In the structure of aforementioned raising native core wall rockfill dam contact surface barrier performance, the pitch in described bituminous concrete plate is water conservancy project No. 90 pitches, and the coarse aggregate of mix is alkaline bone material.
In the structure of aforementioned raising native core wall rockfill dam contact surface barrier performance, described copper sheet sealing anchors into the concrete degree of depth of pedestal and is not less than 0.5m.
In the structure of aforementioned raising native core wall rockfill dam contact surface barrier performance, described pitch water chestnut fat thickness is 2 ~ 5cm.
Compared with prior art, the utility model plays the effect extending watertight core seepage paths by the bituminous concrete plate arranging certain row and length at core-wall pedestal concrete surface.Show brushing pitch water chestnut fat at pedestal concrete simultaneously, ensure that impermeable soil and concrete surface close contact.The utility model improves the ability of core-wall contact surface adaptive deformation, and has and good anti-ly blend anti-seismic performance.This utility model structural shape is simple, and effect is obviously, safe and reliable, has good economic advantages.The utility model is applicable to native core wall rockfill dam core-wall and the concrete syndeton of pedestal.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the partial enlarged drawing in Fig. 1;
Fig. 3 is the A-A sectional view of Fig. 1;
Fig. 4 is the B-B sectional view of Fig. 3.
Being labeled as in accompanying drawing: 1-pedestal concrete, 2-bituminous concrete plate, 3-copper sheet sealing, 4-pitch water chestnut fat, 5-impermeable soil, 6-filter material, 7-Transition Materials, 8-dam shell stockpile.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail, but not as to any restriction of the present utility model.
Improve a structure for native core wall rockfill dam contact surface barrier performance, as shown in Figures 1 to 4.Comprise dam body, dam body center is provided with impermeable soil 5, and impermeable soil 5 both sides are provided with filter material 6, Transition Materials 7 and dam shell stockpile 8 successively; Be seated in bottom the impermeable soil 5 at dam body center on pedestal concrete 1, pedestal concrete 1 end face scribbles pitch water chestnut fat 4, be provided with the bituminous concrete plate 2 perpendicular to pedestal concrete 1 bottom impermeable soil 5, between bituminous concrete plate 2 and pedestal concrete, 1 is provided with copper sheet sealing 3.Pedestal concrete 1 intensity is not less than C20.The spacing be provided with bottom impermeable soil 5 between at least two blocks of bituminous concrete plates 2, two blocks of bituminous concrete plates 2 is not less than 2.0m, and bituminous concrete plate 2 thickness is 0.4 ~ 1.5m, and the length that bituminous concrete plate 2 stretches into impermeable soil 5 inside is not less than 3.0m.Pitch in bituminous concrete plate 2 is water conservancy project No. 90 pitches, and the coarse aggregate of mix is alkaline bone material.The degree of depth that copper sheet sealing 3 anchors into pedestal concrete 1 is not less than 0.5m.Pitch water chestnut fat 4 thickness is 2 ~ 5cm.
Embodiment
During concrete enforcement as shown in Figures 1 to 4.
A kind of loose rock dam basis decompression discharge structure, comprises pedestal concrete 1, bituminous concrete plate 2, copper sheet sealing 3, pitch water chestnut fat 4, impermeable soil 5, filter material 6, Transition Materials 7 and dam shell stockpile 8.Bituminous concrete plate 2 is arranged at described pedestal concrete 1 and impermeable soil contact surface, and be connected to top by copper sheet sealing, utilize the barrier performance of bituminous concrete plate to improve the barrier performance of core-wall, and extend the seepage paths of core-wall, improve the safety of its core-wall structure.Simultaneously the pitch water chestnut fat 4 in the brushing of impermeable soil contact surface, avoids the leakage passage that concrete surface crack causes, adds the switching performance with impermeable soil simultaneously.Wherein said pedestal concrete 1 intensity should be not less than C20; Bituminous concrete plate 2 medium pitch is water conservancy project No. 90 pitches, the coarse aggregate of mix is alkaline bone material, all the other require to require to perform according to current specifications, bituminous concrete plate thickness is 0.4m ~ 1.5m, the length height infiltrating impermeable soil inside is not less than 3.0m, take care the barrier sheet of wall internal placement be two rows and above time, array pitch must not be less than 2.0m, to ensure the construction plant requirement of construction equipment; Copper sheet sealing 3 anchors into the concrete degree of depth of pedestal should not be less than 0.5m, and extends to more than normal pool level elevation, and material requirements meets code requirement; Pitch water chestnut fat 4 is brushed at pedestal concrete surface, and thickness is 2 ~ 5cm; All the other material behaviors should meet current design criteria code requirement.The structure technology of this example is applicable to native core wall rockfill dam core-wall and the concrete syndeton of pedestal.
Mainly carry out according to following steps during construction:
(1), after base surface has excavated, pedestal concrete is first built, and pre-buried copper sheet sealing;
(2) at the thick 2 ~ 5cm of concrete surface brushing pitch water chestnut fat;
(3) adopt and to roll or artificial process carries out asphalt concrete construction, its construction technical requirement performs according to Regulations, synchronously carries out bituminous concrete plate periphery 1m scope impermeable soil and fills and roll;
(4) fill all the other position impermeable soils and roll;
(5) filling and rolling of upstream and downstream filter material, Transition Materials and dam shell stockpile is carried out successively;
(6) above-mentioned steps and seepage proof curtain construction is repeated, until construction terminates.
Embodiments of the present invention are not limited to above-described embodiment, and the various changes made under the prerequisite not departing from present inventive concept all belong within protection scope of the present invention.
Claims (6)
1. improve a structure for native core wall rockfill dam contact surface barrier performance, comprise dam body, dam body center is provided with impermeable soil (5), and impermeable soil (5) both sides are provided with filter material (6), Transition Materials (7) and dam shell stockpile (8) successively; It is characterized in that: impermeable soil (5) bottom at dam body center is seated on pedestal concrete (1), pedestal concrete (1) end face scribbles pitch water chestnut fat (4), impermeable soil (5) bottom is provided with the bituminous concrete plate (2) perpendicular to pedestal concrete (1), and between bituminous concrete plate (2) and pedestal concrete, (1) is provided with copper sheet sealing (3).
2. improve the structure of native core wall rockfill dam contact surface barrier performance according to claim 1, it is characterized in that: described pedestal concrete (1) intensity is not less than C20.
3. improve the structure of native core wall rockfill dam contact surface barrier performance according to claim 1, it is characterized in that: described impermeable soil (5) bottom is provided with at least two pieces of bituminous concrete plates (2), spacing between two pieces of bituminous concrete plates (2) is not less than 2.0m, bituminous concrete plate (2) thickness is 0.4 ~ 1.5m, and the length that bituminous concrete plate (2) stretches into impermeable soil (5) inner is not less than 3.0m.
4. improve the structure of native core wall rockfill dam contact surface barrier performance according to claim 1, it is characterized in that: the pitch in described bituminous concrete plate (2) is water conservancy project No. 90 pitches, and the coarse aggregate of mix is alkaline bone material.
5. improve the structure of native core wall rockfill dam contact surface barrier performance according to claim 1, it is characterized in that: the degree of depth that described copper sheet sealing (3) anchors into pedestal concrete (1) is not less than 0.5m.
6. improve the structure of native core wall rockfill dam contact surface barrier performance according to claim 1, it is characterized in that: described pitch water chestnut fat (4) thickness is 2 ~ 5cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520380575.0U CN204875691U (en) | 2015-06-05 | 2015-06-05 | Structure for improving seepage-proofing performance of contact surface of earth core rock-fill dam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520380575.0U CN204875691U (en) | 2015-06-05 | 2015-06-05 | Structure for improving seepage-proofing performance of contact surface of earth core rock-fill dam |
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| Publication Number | Publication Date |
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| CN204875691U true CN204875691U (en) | 2015-12-16 |
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| CN201520380575.0U Active CN204875691U (en) | 2015-06-05 | 2015-06-05 | Structure for improving seepage-proofing performance of contact surface of earth core rock-fill dam |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080172A (en) * | 2019-05-13 | 2019-08-02 | 辽宁工程技术大学 | A kind of core wall rockfill dam and its construction method with high barrier property energy |
| CN110485382A (en) * | 2019-09-20 | 2019-11-22 | 中国电建集团成都勘测设计研究院有限公司 | The leakage preventing structure of core-wall concrete cover and core-wall and dam foundation contact site |
| CN110984080A (en) * | 2019-12-27 | 2020-04-10 | 水利部水利水电规划设计总院 | Steel plate core rock-fill dam |
-
2015
- 2015-06-05 CN CN201520380575.0U patent/CN204875691U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080172A (en) * | 2019-05-13 | 2019-08-02 | 辽宁工程技术大学 | A kind of core wall rockfill dam and its construction method with high barrier property energy |
| CN110485382A (en) * | 2019-09-20 | 2019-11-22 | 中国电建集团成都勘测设计研究院有限公司 | The leakage preventing structure of core-wall concrete cover and core-wall and dam foundation contact site |
| CN110984080A (en) * | 2019-12-27 | 2020-04-10 | 水利部水利水电规划设计总院 | Steel plate core rock-fill dam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201127 Address after: 550081 Guizhou Province, Guiyang City Lake District Xingqian Road No. 16 Patentee after: POWERCHINA GUIYANG ENGINEERING CORPORATION LIMITED Patentee after: HUANENG LANCANG RIVER HYDROPOWER Inc. Address before: 550081 Guizhou Province, Guiyang City Lake District Xingqian Road No. 16 Patentee before: POWERCHINA GUIYANG ENGINEERING CORPORATION LIMITED |
|
| TR01 | Transfer of patent right |