CN106120663B - A kind of concrete face rockfill dam - Google Patents
A kind of concrete face rockfill dam Download PDFInfo
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- CN106120663B CN106120663B CN201610699877.3A CN201610699877A CN106120663B CN 106120663 B CN106120663 B CN 106120663B CN 201610699877 A CN201610699877 A CN 201610699877A CN 106120663 B CN106120663 B CN 106120663B
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- rock
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- concrete
- dam
- fill dams
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
- E02B7/04—Dams across valleys
- E02B7/06—Earth-fill dams; Rock-fill dams
Abstract
The present invention relates to a kind of concrete face rockfill dam, the rock-fill dams include successively from upstream to downstream：Concrete slab, bed course area, transition region, upstream rockfill area, enrockment transition region, downstream rockfill area and downstream protection slope；The concrete slab further includes pressure property seam, and the side wall of the pressure property seam is equipped with truss structure.The superior effect of the present invention is：It is effective to prevent the concrete slab generated due to the sedimentation of dam fracture and lateral local compression from destroying.
Description
Technical field
The present invention relates to hydraulic engineering technical fields, and in particular to a kind of concrete face rockfill dam.
Background technology
Dam is the current for block rivers with raising of water level or the water retaining structure of regulating pondage.Dam can be divided into
Two major class of concrete dam and earth and rockfill dam；Concrete dam refer to concreting (or rolling) or with precast concrete block assembling and
Into dam, earth and rockfill dam refers to by local earth material, building stones or mixture, by throwing, roll the methods of the checkdam that builds up of heap, when
When dam body materials are using soil and gravel to be main, claim earth dam；During using rock ballast, cobble, shot material to be main, claim rock-fill dams；When two classes are worked as
When ground material accounts for significant proportion, claim native stone mixed dam.The type of dam is according to the natural conditions of dam site, construction material, construction
The Integrated comparatives such as place, water conservancy diversion, duration, cost are selected.During rainy season, dam can suitably sluice, and sluicing can control flood, generate electricity；Drought
Ji Shi, the water storage in dam may be used as plant irrigation, resident supplies water etc..Dam can play the work of Adjust and use water resource
With.
Concrete face rockfill dam is using rockfill as supporting structure, and casting concrete panel in surface is as anti-at its upstream
Ooze the rock-fill dams of structure, abbreviation rock or face dam.Concrete face rockfill dam includes following characteristics：
(1), the stability of dam slope is good, and dam slope slope foot is substantially suitable with the natural angle of repose of loose dumped rockfill, less than stone roller
Press the internal friction angle of enrockment.
(2), face slab for water retaining is arranged on the upstream face of rockfill, and the performance for bearing water pressure is good；Dam body good water permeability, hardly
It is influenced by penetration.
(3), dam body has good anti-seismic performance, and seismic deformation is small, does not generate pore water pressure due to earthquake；Though earthquake
It may cause panel crack and embankment seepage is caused to increase, but will not dam break.
(4), construction diversion and convenience of passing the flood period.
(5), the influence of climate condition is smaller when constructing.
Concrete face rockfill dam because as above the characteristics of as the preferred type, still, concrete surface sheetpile of building a dam at present
The reason for masonry dam is because of its own structure there is also it is fatal the defects of：In the infall process of dam, concrete slab all exists
Occur crack and leakage to some extent, reduce the whole barrier properties and durability of panel.
For example, number of patent application is：It is 201510827954.4 entitled：A kind of grating type concrete face rockfill dam,
A kind of grating type concrete face rockfill dam is disclosed, including：Bulwark, dam crest road, rockfill area, transition zone, toe board, antiseepage
Curtain, armored concrete grid, armored concrete panel, bed course, the armored concrete grid include horizontal grid, longitudinal lattice
Grid, the rockfill area upstream face are provided with transition zone, and the transition zone upstream face sets the horizontal grid mutually reported to the leadship after accomplishing a task, longitudinal lattice
Grid are formed with multiple grill units between horizontal grid, longitudinal grid, bed course, the bed course are provided in the grill unit
On be provided with armored concrete panel；The transition zone bottom is provided with toe board, and the toe board bottom is provided with seepage proof curtain；Institute
It states transition zone top and is provided with bulwark；Dam crest road is provided at the top of the rockfill area.A kind of grating type provided by the invention
Concrete face rockfill dam, strong with anti-seismic performance, armored concrete panel is not likely to produce extruding destruction, cracking destruction, waterproof
The advantages of seepage prevention system degree of safety is high.
Concrete face rockfill dam of the prior art, during dam settlement, all there is difference in concrete slab
The appearance crack of degree and leakage seriously affect the safety and stability of dam.Often after dam completion, crack and leakage position
The repairing put is just into the groundwork of dam later maintenance, and which increase the maintenance costs of dam.
As above defect exists in the prior art, it is difficult to adapt to the development trend and reality of current concrete face rockfill dam construction
Border needs.In order to overcome above-mentioned defect in the prior art, the present inventor combines design and construction experience for many years, proposes
A kind of concrete face rockfill dam.
The content of the invention
The present invention is achieved through the following technical solutions, a kind of concrete face rockfill dam, and the rock-fill dams are from upstream
Include successively to downstream：Concrete slab, bed course area, transition region, upstream rockfill area, enrockment transition region, downstream rockfill area and under
Swim bank protection；The concrete slab further includes pressure property seam, and the side wall of the pressure property seam is equipped with truss structure.
Further, the truss structure is metal truss structure.
Further, the truss structure is zinc-plated steel truss structure.
Further, reverse U-shaped compression reinforcement is further included between the pressure property seam.
Further, the rock-fill dams further include catchment, and the catchment is " ∠ " type, catchment one end connection
In the downstream base portion of the rock-fill dams, the other end is connected to the dam crest bottom of the rock-fill dams.
Further, the angle of described " ∠ " type catchment is 60-75 °, preferably 68 °.
Further, the catchment further includes drainage toe area, and the drainage toe area is located under the rock-fill dams
Swim bottom；The drainage toe area is communicated in the catchment.
Further, the rock-fill dams further include blinding layer area, and the blinding layer area is located at the upstream bottom of rock-fill dams
Portion and with the bottom connection of the concrete slab.
Further, the aggregate size in the blinding layer area is 10~40mm.
Further, the blinding layer area is connected with the dam foundation of the rock-fill dams by toe board.
Further, the rock-fill dams further include upstream apron area, and the upstream apron area is located at the upper of the rock-fill dams
Bottom is swum, the upstream apron area is located on the blinding layer area and the bottom of the concrete slab.
Compared with prior art, superior effect of the invention is：
1st, rock-fill dams of the present invention between the pressure of concrete slab seam by setting truss structure, effectively
The concrete slab generated due to the sedimentation of the rock-fill dams is prevented to be broken to destroy with lateral local compression.
2nd, rock-fill dams of the present invention are made by the setting in blinding layer area and the connection mode of blinding layer area and the dam foundation
The upstream bottom of the concrete slab is firmer.
3rd, for rock-fill dams of the present invention by setting the catchment, the discharge for making the infiltration of the rock-fill dams is more smooth.
Description of the drawings
Fig. 1 is the structure diagram of rock-fill dams of the present invention；
Fig. 2 is the schematic diagram for the truss structure that the side wall of concrete slab of the present invention pressure property seam is set；
Fig. 3 is the structure diagram of U-typed compression reinforcement of the present invention.
Reference numeral is as follows：
1- concrete slabs, 2- bed courses area, 3- transition regions, 4- upstreams rockfill area, 5- enrockments transition region, 6- downstreams enrockment
Area, 7- pressures property seam, 8- truss structures, 9- catchments, 10- drainage toes area, 11- blinding layers area, the 12- dam foundations, 13- upstreams paving
Cover region, 14- dam crests, 15- downstream protection slopes, 16- U-typed compression reinforcements.
Specific embodiment
The specific embodiment of the invention is described in further detail below in conjunction with the accompanying drawings.
As shown in Figures 1 and 2, the rock-fill dams include successively from upstream to downstream：Concrete slab 1, bed course area
2nd, transition region 3, upstream rockfill area 4, enrockment transition region 5, downstream rockfill area 6 and downstream protection slope 15；The concrete slab 1 also wraps
Pressure property seam 7 is included, the side wall of the pressure property seam 7 is equipped with truss structure 8.
Vertical joint of the pressure property seam 7 between elimination harmful cracks and a kind of concrete slab 1 that construction is facilitated to set,
The seam is located in the middle part of riverbed and will be squeezed, therefore is referred to as pressure property seam 7.The rock-fill dams due to being built up by enrockment,
Need an infall process, several years of some need or even up to 10 years or more, dam settlement is also unstable not to restrain, because of dam
The difference in dam foundation riverbed and two sides elevation causes the otherness of enrockment filled height difference and enrockment material, general dam foundation river
Bed height is maximum, gradually to two sides transition, based on such structure, causes the difference settled along the axis of dam, dam upstream is mixed
Solidifying soil panel 1 exists to inclined displacement and extruding force in the middle part of riverbed, causes stress concentration since stress distribution is uneven, surpasses
The compression strength of concrete slab 1 is crossed, 7 local concrete slab 1 of riverbed pressure property seam is often led to and squeezes destruction, this is coagulation
The native common mass defect of rock such as handles, causes seepage, great threat is caused to dam safety not in time.
By the setting of truss structure 8, the entire compression intensity of concrete slab 1 is strengthened, effectively prevents concrete
Panel 1 destroys due to extruding.
The bed course area 2 uses continuous grading fines stone, and the grain size of the fines stone is 115~130mm.
The transition region 3 uses continuous grading fines stone, and the grain size of the fines stone is 85~100mm.
The enrockment transition region 5 is the boundary of upstream rockfill area 4 and downstream rockfill area 6, according to dam body ambient enviroment, height of dam
The position of the enrockment transition region 5 is set with the different situations of the dam foundation.
The ratio of mud of the concrete slab 1 is 0.45~0.5, sand coarse aggregate ratio 35%~40%, unit consumption of water 120~
160kg/m3, additive 0.75%~2%.
The placed rockfill intensity of the downstream protection slope 15>80MPa.
The truss structure 8 is metal truss structure.
The truss structure 8 is zinc-plated steel truss structure.
Reverse U-shaped compression reinforcement 16 is further included between the pressure property seam 7, the length of U-typed compression reinforcement 16 is general
1.2m~1.5m is designed as, and entire compression effect can be played with Welding steel truss.
By the setting of U-typed compression reinforcement 16, the compression strength of concrete slab 1 is further enhanced.
The rock-fill dams further include catchment 9, and the catchment 9 is " ∠ " type, and described 9 one end of catchment is communicated in enrockment
Dam downstream base portion, the other end are connected to 14 bottom of dam crest of rock-fill dams.
The angle of " ∠ " the type catchment is 60-75 °, preferably 68 °.
The catchment 9 further includes drainage toe area 10, and the drainage toe area 10 is located at the rock-fill dams downstream base portion；
The drainage toe area 10 is communicated in the catchment 9.
The rock-fill dams further include blinding layer area 11, and the blinding layer area 11 is located at the upstream bottom of the rock-fill dams
And connect with the bottom toe board of the concrete slab 1, it plays a supporting role to 1 bottom of concrete slab.
The aggregate size in the blinding layer area 11 is 10~40mm.
The paving thickness in the blinding layer area 11 is less than 20cm, is compacted using rolling apparatus, then carries out next layer of stand
Paving.
The blinding layer area 11 is connected with the dam foundation 12 by toe board.
The rock-fill dams further include upstream apron area 13, and the upstream apron area 13 is located at the upstream bottom of rock-fill dams, institute
Upstream apron area 13 is stated to be located on blinding layer area 11 and the bottom of concrete slab 1.
Present invention is not limited to the embodiments described above, in the case of without departing substantially from the substantive content of the present invention, this field skill
Any deformation, improvement, the replacement that art personnel are contemplated that each fall within protection scope of the present invention.
Claims (9)
1. a kind of concrete face rockfill dam, the rock-fill dams include successively from upstream to downstream：Concrete slab, bed course area,
Transition region, upstream rockfill area, enrockment transition region, downstream rockfill area and downstream protection slope；It is characterized in that, the concrete slab is also
Including pressure property seam, the side wall of the pressure property seam is equipped with truss structure, wherein, it is further included inverted " U " between the pressure property seam
Type compression reinforcement.
2. concrete face rockfill dam according to claim 1, which is characterized in that the truss structure is metal truss knot
Structure.
3. concrete face rockfill dam according to claim 1, which is characterized in that the truss structure is zinc-plated steel truss
Structure.
4. concrete face rockfill dam according to claim 1, which is characterized in that the rock-fill dams further include catchment,
The catchment is " ∠ " type, and described catchment one end is communicated in rock-fill dams downstream base portion, and the other end is connected to the dam of rock-fill dams
Top bottom.
5. concrete face rockfill dam according to claim 1, which is characterized in that the rock-fill dams further include blinding layer
Area, the blinding layer area be located at the upstream bottom of rock-fill dams and with the bottom connection of concrete slab.
6. concrete face rockfill dam according to claim 1, which is characterized in that the ratio of mud of the concrete slab is
0.45~0.5, sand coarse aggregate ratio 35%~40%, 120~160kg/m of unit consumption of water3。
7. concrete face rockfill dam according to claim 4, which is characterized in that the catchment further includes drainage toe
Area, the drainage toe area are located at rock-fill dams downstream base portion；The drainage toe area is communicated in catchment.
8. concrete face rockfill dam according to claim 4, which is characterized in that the angle of " ∠ " the type catchment is
60-75°。
9. concrete face rockfill dam according to claim 5, which is characterized in that the aggregate size in the blinding layer area
For 10~40mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610699877.3A CN106120663B (en) | 2016-08-22 | 2016-08-22 | A kind of concrete face rockfill dam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610699877.3A CN106120663B (en) | 2016-08-22 | 2016-08-22 | A kind of concrete face rockfill dam |
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| Publication Number | Publication Date |
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| CN106120663A CN106120663A (en) | 2016-11-16 |
| CN106120663B true CN106120663B (en) | 2018-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610699877.3A Active CN106120663B (en) | 2016-08-22 | 2016-08-22 | A kind of concrete face rockfill dam |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185006B (en) * | 2019-05-30 | 2020-09-15 | 中国电建集团成都勘测设计研究院有限公司 | High face rockfill dam for narrow river valley |
| CN116815712B (en) * | 2023-07-11 | 2024-02-13 | 中国水利水电第十二工程局有限公司 | Basalt fiber concrete face rockfill dam |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06240682A (en) * | 1993-02-16 | 1994-08-30 | Kajima Corp | Expansion caisson |
| KR101367657B1 (en) * | 2011-11-25 | 2014-02-28 | 주식회사 정원종합산업 | Method for constructing face slab of concrete face rockfill dam |
| CN104110012A (en) * | 2014-07-28 | 2014-10-22 | 中国电建集团西北勘测设计研究院有限公司 | Low-permeability rock-fill material concrete panel rock-fill dam |
| CN204530633U (en) * | 2015-02-06 | 2015-08-05 | 中国电建集团华东勘测设计研究院有限公司 | The soft rock that a kind of subregion is arranged builds rock dam body |
| CN205444125U (en) * | 2015-12-26 | 2016-08-10 | 江南水利水电工程公司 | Concrete faced rockfill dam |
-
2016
- 2016-08-22 CN CN201610699877.3A patent/CN106120663B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06240682A (en) * | 1993-02-16 | 1994-08-30 | Kajima Corp | Expansion caisson |
| KR101367657B1 (en) * | 2011-11-25 | 2014-02-28 | 주식회사 정원종합산업 | Method for constructing face slab of concrete face rockfill dam |
| CN104110012A (en) * | 2014-07-28 | 2014-10-22 | 中国电建集团西北勘测设计研究院有限公司 | Low-permeability rock-fill material concrete panel rock-fill dam |
| CN204530633U (en) * | 2015-02-06 | 2015-08-05 | 中国电建集团华东勘测设计研究院有限公司 | The soft rock that a kind of subregion is arranged builds rock dam body |
| CN205444125U (en) * | 2015-12-26 | 2016-08-10 | 江南水利水电工程公司 | Concrete faced rockfill dam |
Non-Patent Citations (2)
| Title |
|---|
| 甲岩水电站面板堆石坝一期面板施工;林崇勇;《云南水力发电》;20130831;第29卷(第4期);第119-122、163页 * |
| 砂砾石面板堆石坝设计的技术分析;付军;《大坝技术及长效性能研究进展》;20110927;第96-102页 * |
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| CN106120663A (en) | 2016-11-16 |
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