CN105297685A - Base concrete panel rock-fill dam and construction method thereof - Google Patents
Base concrete panel rock-fill dam and construction method thereof Download PDFInfo
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- CN105297685A CN105297685A CN201510817066.4A CN201510817066A CN105297685A CN 105297685 A CN105297685 A CN 105297685A CN 201510817066 A CN201510817066 A CN 201510817066A CN 105297685 A CN105297685 A CN 105297685A
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- pedestal
- district
- antiseepage
- rock
- rockfill dam
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- 239000004567 concrete Substances 0.000 title claims abstract description 31
- 238000010276 construction Methods 0.000 title claims abstract description 19
- 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 124
- 239000011435 rock Substances 0.000 claims description 43
- 230000007704 transition Effects 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 13
- 238000011144 upstream manufacturing Methods 0.000 claims description 12
- 238000005516 engineering process Methods 0.000 claims description 9
- 230000002262 irrigation Effects 0.000 claims description 7
- 238000003973 irrigation Methods 0.000 claims description 7
- 238000009412 basement excavation Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- PTVDYARBVCBHSL-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu] PTVDYARBVCBHSL-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000011382 roller-compacted concrete Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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Abstract
The invention discloses a base concrete face rockfill dam and a construction method thereof, belonging to the technical field of hydroelectric engineering. According to the technical scheme, the base is arranged below the concrete faced rockfill dam, the layered structure is adopted, the height of a rockfill body of the concrete faced rockfill dam and the length of a face plate are reduced fundamentally, and the deformation of the concrete faced rockfill dam and the face plate is reduced on the premise of not reducing the elevation of the top of the dam, so that the face rockfill dam with higher design, construction and operation can meet the technical requirements more easily, the deformation is controlled in a controllable range, and the limitation that the height concrete faced rockfill dam cannot be higher than 250m level because the height concrete faced rockfill dam is greatly deformed is broken through.
Description
Technical field
The invention belongs to hydroelectric project technical field, relate to a kind of new dam type being suitable for more than 70m rock, especially relate to a kind of pedestal Concrete Face Rockfill Dam and construction method thereof.
Background technology
Make a general survey of rock development course, cross the 180m levels such as rock (height of dam 179.5m) develop into water cloth a strip of land between hills rock (height of dam 233m) from Tianshengqiao-I rock (height of dam 178m), big vast family, height of dam development maximum span reaches 53m; At present, built most high CFRD water cloth a strip of land between hills rock operational excellence, illustrates that China has possessed design, builds, the ability of operation and management 200m level rock.But several 200m level high CFRD of short-term construction are obtaining successfully and while invaluable experience, part engineering also occurs that dam deformation is bigger than normal than predicted value, the problems such as extruding is damaged, leakage is larger occur panel.If height of dam continues to be increased to more than 250m, compared with water cloth a strip of land between hills rock of the highest built 233m, comparatively large with spline span, will larger design be brought and build difficulty.Therefore, in current technical foundation, success builds 250m level or higher rock, and those skilled in the art there is no pure assurance.
Due to the characteristic of dam material, the distortion of runtime is inevitable in CFRD Embankment process and after retaining, but is out of shape and excessively will causes face slab rupture, joint seal destroys, thus increase leakage, even cause seepage stability destruction etc., threaten dam resistance to overturning.In addition, conventional panels loose rock dam height of dam increases, and panel chord length increases, and behind reservoir filling position, under effect of water pressure, deck deflection distortion increases, and is out of shape the excessive panel that may cause and fractures, and makes panel lose antiseepage function.Facts have proved, identical material source, grating and when filling index, height of dam is higher, and panel chord length is longer, dam deformation and deck deflection distortion larger.Existing result of study shows, one of key technology of restriction rock height of dam is exactly the Deformation control of panel and dam body stockpile.
Summary of the invention
In order to solve the problem, the invention provides a kind of pedestal Concrete Face Rockfill Dam and construction method thereof, thus reach reduction dam body rockfill height, reduce panel chord length, thus reduce the effect of dam deformation value, make distortion within controlled range, make upper panel loose rock dam height meet the design of current rock, construction, operation, administrative skill level.
The present invention is achieved by following technical solution.
A kind of pedestal Concrete Face Rockfill Dam, comprise rock, panel, bed course district and transition region a, described transition region a, bed course district and panel are covered on the upstream face of rock successively, described rock has pedestal, is provided with transition region b between described pedestal and rock.
Described pedestal comprises the pedestal antiseepage district of upstream side and the pedestal supporting region in downstream.
Described pedestal antiseepage district is provided with toe board district, pedestal top.
Inside, described pedestal antiseepage district is provided with pedestal irrigation gallery.
Seepage proof curtain is provided with below described pedestal antiseepage district.
Pedestal antiseepage district transverse joint is provided with in described pedestal antiseepage district.
Described panel is provided with panel vertical lap seam.
Described rock two ends are provided with toe board.
A construction method for pedestal Concrete Face Rockfill Dam, comprises the steps:
A. pedestal is built: remove dam foundation covering layer, by the degree of depth that dam foundation excavation to bearing capacity meets the demands, and system peace reinforcing bar in excavation region, under pedestal antiseepage district, preset seepage proof curtain, reserved pedestal irrigation gallery, jumps and builds pedestal concrete soon, take Temperature Control Measures simultaneously, prevent crack; Pedestal supporting region then according to material behavior determination on-deck size, and takes Temperature Control Measures;
B. pedestal Anti-seeping technology: carry out Anti-seeping technology to pedestal antiseepage district and pedestal supporting region interface, establishes pedestal antiseepage district transverse joint in pedestal antiseepage district, the position of pedestal antiseepage district transverse joint is corresponding with the position of panel vertical lap seam;
C. pedestal joint face process: fill Transition Materials at pedestal top, the filling material and the indices that form transition region b, transition region b are identical with transition region a;
D. CFRD Embankment: fill rock, transition region a, bed course district, panel successively, panel arranges panel vertical lap seam, with pedestal antiseepage district transverse joint position one_to_one corresponding, completes construction.
In described step a, when pedestal antiseepage district builds, reserved upstream thickness 1 ~ 5m, toe board district together builds with pedestal top, and carries out the concreting of bank slope toe board simultaneously.
The invention has the beneficial effects as follows:
A kind of pedestal Concrete Face Rockfill Dam of the present invention and construction method thereof, by arranging pedestal under rock, its effect is: 1. have employed hierarchy, fundamentally reduce height and the panel length of rock rockfill, under the prerequisite not reducing crest elevation, reduce the distortion of rock and panel, make design, build and run higher rock to be more prone to reach technical requirements, by Deformation control in controlled range, breach because high CFRD can not higher than the limitation of 250m level by distortion is comparatively large, 2. first construct before rock construction complete, completion can be passed the flood period by dash, avoids the destruction that flood season, bed course temporary water dash may cause dam body temporary section, shortens the time of bed course provisional protection, reduce the maintenance cost of bed course provisional protection, also reduce the investment to construction diversion simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the partial enlarged drawing at A place in the present invention;
Fig. 3 is the elevation of pedestal upstream face in the present invention.
In figure: 1-pedestal, 2-rock, 3-panel, 4-bed course district, 5-transition region a, 6-transition region b, 7-pedestal supporting region, 8-pedestal antiseepage district, toe board district, 9-pedestal top, 10-pedestal antiseepage district transverse joint, 11-pedestal irrigation gallery, 12-seepage proof curtain, 13-toe board, 14-panel vertical lap seam.
Detailed description of the invention
Technical scheme of the present invention is further described below in conjunction with accompanying drawing, but described in claimed scope is not limited to.
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of pedestal Concrete Face Rockfill Dam of the present invention, comprise rock 2, panel 3, bed course district 4 and transition region a5, described transition region a5, bed course district 4 and panel 3 are covered on the upstream face of rock 2 successively, described rock 2 has pedestal 1, transition region b6 is provided with, as filling Transition Materials between described pedestal 1 and rock 2.
Described pedestal 1 comprises the pedestal antiseepage district 8 of upstream side and the pedestal supporting region 7 in downstream, pedestal 1 is highly less than 100m, pedestal supporting region 7 can be built up by one or more batch mixings in the rigid materials such as normal concrete, roller compacted concrete, cement sand and gravel, rock-fill concrete, and after building up, its rigidity is suitable with the dam foundation; Pedestal antiseepage district 8 is built up by normal concrete; Described pedestal antiseepage district 8 is provided with toe board district, pedestal top 9, and inside is provided with pedestal irrigation gallery 11, and below is provided with seepage proof curtain 12, carries out antiseepage to multiple position, reaches good anti-seepage effect.
Described panel 3 is provided with panel vertical lap seam 14, makes panel 3 can bear certain deflection; Be provided with some pedestal antiseepage districts transverse joint 10 along river vertical direction in described pedestal antiseepage district 8, the position of each pedestal antiseepage district transverse joint 10 is corresponding with panel vertical lap seam 14, establishes Copper water stop in seam.
Described rock 2 is conventional rock, rock 2 and panel 3, bed course 4, transition region a5 are all based on pedestal 1, and the upper surface of pedestal 1 is greater than the length of rock 2 bottom surface along direction, river course along the length in direction, river course, the step surface that pedestal 1 upstream side extends out, namely top, pedestal antiseepage district 8 is provided with toe board district, pedestal top 9, wide 8 ~ the 15m in toe board district, pedestal top 9, thick 1 ~ 2m, adopt more than C30 concreting; Pedestal 1 two ends are then provided with toe board 13, and toe board structure can avoid rock 2 be subject to current scour with the crossover position of pedestal 1 and seepage occurs.
Described pedestal 1 along the river to length L be the H that 15 ~ 100m adds 2.9 ~ 3.2 times, wherein H is the height of rock 2; Pedestal 1 puts slope respectively to upstream and downstream, and slope is than determining according to actual conditions.
During construction, take following steps:
A. pedestal is built: remove dam foundation covering layer, by the degree of depth that dam foundation excavation to bearing capacity meets the demands, and system peace reinforcing bar in excavation region, determine position, pedestal antiseepage district 8, in pedestal antiseepage district, 8 times default seepage proof curtains 12, then build pedestal concrete, reserve pedestal irrigation gallery 11 when building.When building, can first build pedestal supporting region 7, also can build rising with pedestal supporting region 7 in pedestal antiseepage district 8 simultaneously, and Anti-seeping technology is carried out to pedestal antiseepage district 8 and pedestal supporting region 7 interface; When pedestal antiseepage district 8 builds, adopt C20 or more than C20 normal concrete to jump and build soon, take Temperature Control Measures simultaneously, prevent crack; Reserved upstream thickness 1 ~ 5m, together builds with toe board district, pedestal top 9, and carry out the concreting of bank slope toe board 13 while building pedestal 1, and corresponding based process; Building then according to material behavior determination on-deck size of pedestal supporting region 7, guarantees the intensity reaching rock, and takes suitable Temperature Control Measures when building.
B. pedestal Anti-seeping technology: carry out Anti-seeping technology to pedestal antiseepage district 8 and pedestal supporting region 7 interface, establishes pedestal antiseepage district transverse joint 10 in pedestal antiseepage district 8, the position of pedestal antiseepage district transverse joint 10 is corresponding with the design attitude of panel vertical lap seam 14.
C. pedestal joint face process: fill Transition Materials at pedestal 1 top, the filling material and the indices that form transition region b6, transition region b6 are identical with the design objective of transition region a5, and filling-up thickness is then determined according to actual conditions;
D. CFRD Embankment: fill rock 2, transition region a5, bed course district 4, panel 3 successively, panel 3 arranges panel vertical lap seam 14, with transverse joint 10 position, pedestal antiseepage district one_to_one corresponding, panel 3 construction can carry out stage construction according to height of dam, realizes impoundment ahead generating.
Claims (10)
1. a pedestal Concrete Face Rockfill Dam, comprise rock (2), panel (3), bed course district (4) and transition region a (5), described transition region a (5), bed course district (4) and panel (3) are covered on the upstream face of rock (2) successively, it is characterized in that: described rock (2) has pedestal (1), between described pedestal (1) and rock (2), be provided with transition region b (6).
2. a kind of pedestal Concrete Face Rockfill Dam according to claim 1, is characterized in that: described pedestal (1) comprises the pedestal antiseepage district (8) of upstream side and the pedestal supporting region (7) in downstream.
3. a kind of pedestal Concrete Face Rockfill Dam according to claim 2, is characterized in that: described pedestal antiseepage district (8) is provided with toe board district, pedestal top (9).
4. a kind of pedestal Concrete Face Rockfill Dam according to claim 2, is characterized in that: described pedestal antiseepage district (8) inside is provided with pedestal irrigation gallery (11).
5. a kind of pedestal Concrete Face Rockfill Dam according to claim 2, is characterized in that: described pedestal antiseepage district (8) below is provided with seepage proof curtain (12).
6. a kind of pedestal Concrete Face Rockfill Dam according to claim 2, is characterized in that: be provided with pedestal antiseepage district transverse joint (10) in described pedestal antiseepage district (8).
7. a kind of pedestal Concrete Face Rockfill Dam according to claim 1, is characterized in that: described panel (3) is provided with panel vertical lap seam (14).
8. a kind of pedestal Concrete Face Rockfill Dam according to claim 1, is characterized in that: described rock (2) two ends are provided with toe board (13).
9. a construction method for pedestal Concrete Face Rockfill Dam, is characterized in that: comprise the steps:
A. pedestal is built: remove dam foundation covering layer, by the degree of depth that dam foundation excavation to bearing capacity meets the demands, system peace reinforcing bar in excavation region, 8 times default seepage proof curtains 12 in pedestal antiseepage district, reserved pedestal irrigation gallery 11, jump and build pedestal concrete soon, take Temperature Control Measures simultaneously, prevent crack; Building then according to material behavior determination on-deck size of pedestal supporting region 7, and take Temperature Control Measures when building;
B. pedestal Anti-seeping technology: carry out Anti-seeping technology to pedestal antiseepage district 8 and pedestal supporting region 7 interface, establishes pedestal antiseepage district transverse joint 10 in pedestal antiseepage district 8, the position of pedestal antiseepage district transverse joint 10 is corresponding with the position of panel vertical lap seam 14;
C. pedestal joint face process: fill Transition Materials at pedestal 1 top, the filling material and the indices that form transition region b6, transition region b6 are identical with transition region a5;
D. CFRD Embankment: fill rock 2, transition region a5, bed course district 4, panel 3 successively, panel 3 arranges panel vertical lap seam 14, with transverse joint 10 position, pedestal antiseepage district one_to_one corresponding, completes construction.
10. the construction method of a kind of pedestal Concrete Face Rockfill Dam as claimed in claim 9, it is characterized in that: in described step a, when pedestal antiseepage district 8 builds, reserved upstream thickness 1 ~ 5m, together build with toe board district, pedestal top 9, and carry out the concreting of bank slope toe board 13 simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510817066.4A CN105297685B (en) | 2015-11-23 | 2015-11-23 | Base concrete panel rock-fill dam and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510817066.4A CN105297685B (en) | 2015-11-23 | 2015-11-23 | Base concrete panel rock-fill dam and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105297685A true CN105297685A (en) | 2016-02-03 |
| CN105297685B CN105297685B (en) | 2017-10-24 |
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| CN201510817066.4A Active CN105297685B (en) | 2015-11-23 | 2015-11-23 | Base concrete panel rock-fill dam and construction method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105672205A (en) * | 2016-03-29 | 2016-06-15 | 中国电建集团中南勘测设计研究院有限公司 | Seepage prevention structure of concrete face rockfill dam |
| CN106087880A (en) * | 2016-07-19 | 2016-11-09 | 中国水利水电第十工程局有限公司 | Dam that a kind of 300 meter levels are high and construction technology thereof |
| CN106192907A (en) * | 2016-07-11 | 2016-12-07 | 中国水利水电第十工程局有限公司 | Set up the construction method of 150m～the 300m level high concrete panel rock-fill dams of cement sand and gravel structure sheaf |
| CN106638487A (en) * | 2017-01-19 | 2017-05-10 | 中国电力建设股份有限公司 | Combined water retaining dam and construction method of combined water retaining dam |
| CN107587484A (en) * | 2017-08-31 | 2018-01-16 | 贵州省水利水电勘测设计研究院 | A kind of rock for exempting from toe board structure |
| CN108316250A (en) * | 2018-05-02 | 2018-07-24 | 中国电建集团华东勘测设计研究院有限公司 | Technology and construction method are cleared using the silt that stops for dynamically stopping silt storage capacity separation mud-rock flow |
| CN108547190A (en) * | 2018-06-22 | 2018-09-18 | 中国电建集团贵阳勘测设计研究院有限公司 | Ecological type water-soaking embankment treatment method |
| CN110042800A (en) * | 2019-05-24 | 2019-07-23 | 中水北方勘测设计研究有限责任公司 | Concrete face rockfill dam leakage preventing structure |
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| CN205134283U (en) * | 2015-11-20 | 2016-04-06 | 中国电建集团贵阳勘测设计研究院有限公司 | Base concrete panel rock-fill dam |
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| CN103132488A (en) * | 2011-11-25 | 2013-06-05 | 中国水电顾问集团贵阳勘测设计研究院 | Reverse osmosis water processing method and reverse osmosis drainage system in construction period of concrete faced rockfill dam |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105672205A (en) * | 2016-03-29 | 2016-06-15 | 中国电建集团中南勘测设计研究院有限公司 | Seepage prevention structure of concrete face rockfill dam |
| CN106192907A (en) * | 2016-07-11 | 2016-12-07 | 中国水利水电第十工程局有限公司 | Set up the construction method of 150m～the 300m level high concrete panel rock-fill dams of cement sand and gravel structure sheaf |
| CN106192907B (en) * | 2016-07-11 | 2018-06-22 | 中国水利水电第十一工程局有限公司 | Add the construction method of 150m~300m grade high concrete panel rock-fill dams of cement sand and gravel structure sheaf |
| CN106087880A (en) * | 2016-07-19 | 2016-11-09 | 中国水利水电第十工程局有限公司 | Dam that a kind of 300 meter levels are high and construction technology thereof |
| CN106087880B (en) * | 2016-07-19 | 2018-10-19 | 中国水利水电第十一工程局有限公司 | A kind of dam that 300 meter level is high and its construction technology |
| CN106638487A (en) * | 2017-01-19 | 2017-05-10 | 中国电力建设股份有限公司 | Combined water retaining dam and construction method of combined water retaining dam |
| CN106638487B (en) * | 2017-01-19 | 2019-10-25 | 中国电力建设股份有限公司 | A kind of construction method combining checkdam and the combined dam |
| CN107587484A (en) * | 2017-08-31 | 2018-01-16 | 贵州省水利水电勘测设计研究院 | A kind of rock for exempting from toe board structure |
| CN108316250A (en) * | 2018-05-02 | 2018-07-24 | 中国电建集团华东勘测设计研究院有限公司 | Technology and construction method are cleared using the silt that stops for dynamically stopping silt storage capacity separation mud-rock flow |
| CN108547190A (en) * | 2018-06-22 | 2018-09-18 | 中国电建集团贵阳勘测设计研究院有限公司 | Ecological type water-soaking embankment treatment method |
| CN110042800A (en) * | 2019-05-24 | 2019-07-23 | 中水北方勘测设计研究有限责任公司 | Concrete face rockfill dam leakage preventing structure |
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