CN205077453U - Dam structure that panel rock -fill dam and upstream cofferdam combine - Google Patents

Dam structure that panel rock -fill dam and upstream cofferdam combine Download PDF

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Publication number
CN205077453U
CN205077453U CN201520634861.5U CN201520634861U CN205077453U CN 205077453 U CN205077453 U CN 205077453U CN 201520634861 U CN201520634861 U CN 201520634861U CN 205077453 U CN205077453 U CN 205077453U
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Prior art keywords
upstream
dam
cofferdam
rock
slope
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CN201520634861.5U
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张合作
程瑞林
王蒙
邱焕峰
张斌
郝鹏
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Powerchina Guiyang Engineering Corp Ltd
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Powerchina Guiyang Engineering Corp Ltd
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Abstract

The utility model discloses a dam structure that panel rock -fill dam and upstream cofferdam combine, upstream cofferdam be located enrockment material (6) at concrete toe board (2) following elevation position of panel rock -fill dam the filler district and with the upper reaches dam slope at the following elevation position of panel rock -fill dam sharing concrete toe board (2), upstream cofferdam's low reaches dam slope from the position of concrete toe board (2) downriver the face extend to basic surface (13), concrete toe board (2) are located the top of the upper reaches preventions of seepage body (1), and the upper reaches prevention of seepage body (1) gos deep into in basic surface (13) downwards and is equipped with consolidation grouting (11) and curtain grouting (12), set up upstream slope -protection (8) and the upper reaches lid heavy (10) at upstream cofferdam's upper reaches dam slope, upper reaches lid weighs (10) and follows the upper reaches dam slope of panel rock -fill dam extends and cover completely concrete toe board (2) to dam crest top scope. The utility model provides an among the prior art concrete panel dam dam body and upstream cofferdam divide to open and arrange that to result in the water conservancy diversion system longer, the pivot is arranged not compactly, the big scheduling problem of engineering volume.

Description

The dam structure that a kind of rock and upstream cofferdam combine
Technical field
The utility model relates to the dam structure of a kind of rock and upstream cofferdam combination, belongs to Hydraulic and Hydro-Power Engineering technical field.
Background technology
Concrete Face Rockfill Dam adopts engineering works to excavate due to it or exploits local material nearby and builds a dam, so economic advantages are obvious, simultaneously good to the conformability of landform geological conditions with it, to natural conditions and weather strong adaptability, construction period is short, construction investment is low, and construction speed is fast, and is at home and abroad developed rapidly.
Concrete Face Rockfill Dam engineering initial stage of construction diversion (damming to dam body temporary section dash) does not generally possess stage diversion and channel diversion condition, so the built and face dam engineering of building at present, generally have employed tunnel diversion, diversion mode that cofferdam once stops, this is that Concrete Face Rockfill Dam is the most frequently used, also be that the water conservancy diversion best embodying this dam type feature is passed the flood period mode, be safety, reliably, scheme economically and reasonably.In built engineering, concrete face rockfill dam dam body and upstream cofferdam are generally arranged apart, and it is distant, simultaneously for ensureing the safety of passing the flood period of dam construction phase, upstream cofferdam is generally higher, to improve diversion tunnel conveyance capacity as far as possible, cause inlet of diversion tunnel far away apart from dam line, cause flow guide system longer, project playout is not compact, and engineering quantity is relatively large.
Utility model content
The purpose of this utility model is to provide a kind of dam structure at concrete face rockfill dam dam body upstream arrangement upstream cofferdam, longer to solve concrete face rockfill dam dam body and the upstream cofferdam flow guide system that causes arranged apart in prior art, the problems such as project playout is not compact, and engineering quantity is large.
The utility model is achieved by following technical solution:
The dam structure that a kind of rock and upstream cofferdam combine, it is the dam structure at concrete face rockfill dam dam body upstream arrangement upstream cofferdam, wherein, upstream cofferdam is positioned at the packing area of the stockpile at the concrete toe board following elevation position of rock and shares the upstream dam slope at the following elevation position of concrete toe board with rock, and the downstream dam slope of upstream cofferdam extends to base surface from the position of concrete toe board to downstream face; Described concrete toe board is positioned at the top of upstream impervious body, and upstream impervious body to go deep into downwards in base surface and is provided with consolidation grouting and curtain grouting; Arrange upstream slope-protection and upstream lid is heavy at the upstream dam slope of upstream cofferdam, upstream lid is heavy to be extended along the upstream dam slope of rock to dam crest and the top scope of oversite concrete toe board completely.
Further, Transition Materials and upstream apron is provided with successively by upstream to downstream between upstream impervious body and the stockpile being located thereon trip, Transition Materials and upstream apron extend to base surface from upstream cofferdam dam crest, and upstream apron upwards extends to along rock upstream dam slope from upstream cofferdam dam crest and to cover heavy top with upstream and flush.In addition, the upstream dam slope of rock is provided with concrete slab, bedding material and Transition Materials from upstream cofferdam dam crest to rock dam crest, wherein bedding material and Transition Materials extend downward base surface along the downstream face of upstream impervious body.
The utility model arranges upstream cofferdam at rock upstream concrete toe board and stockpile scope of filling, effectively reduce the line length of other buildings, in antiseepage, upstream cofferdam impervious body is designed to permanent structure, and at top and toe board structure to combination, all the other positions all conveniently rock zoning design and anatomical connectivity require process.Upstream impervious body can adopt concrete cut, C20 and above strength grade concrete structure pattern.Concrete toe board and concrete slab strength grade of concrete should not lower than C225.When impervious body is connected with concrete toe board, copper sheet sealing should be set, prevent seepage.Upstream slope-protection should adopt hard rock boulder, galvanized wire cage or lattice guest protection pad etc., reaches the effect of erosion control.Upstream apron plays plugging effect, so its grain composition and antiseepage require to control according to hydroelectric project impermeable soil index request.Consolidation grouting is bottom impervious body and arranges within the scope of upstream and downstream bedding level bedding material, and the degree of depth is not less than 6m.All the other material requirements should be consistent with job specfication according to existing Concrete Face Rockfill Dam design with construction technology control.
The beneficial effects of the utility model are:
In concrete face rockfill dam upstream dam body scope, the utility model is by arranging that upstream cofferdam reduces permanent building line length, Diversion Tunnel cross dimensions is reduced by increasing upstream cofferdam height as far as possible in construction, shorten Diversion Tunnel length, reduce temporary works expense.High gradient slope toe board excavation and process engineering quantity can also be reduced for Narrow Valleys area, improve build and the stress condition of riverbed bottom panel.This utility model structural shape is simple, and effect is obviously, little to construction interference, and safe and reliable, has good economic advantages.
Accompanying drawing explanation
Fig. 1 is exemplary configurations structural representation of the present utility model.
Description of reference numerals: 1-upstream impervious body, 2-concrete toe board, 3-concrete slab, 4-bedding material, 5-Transition Materials, 6-stockpile, 7-downstream protection slope enrockment, 8-upstream slope-protection, 9-upstream apron, 10-upstream lid weight, 11-consolidation grouting, 12-curtain grouting, 13-base surface.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 1, the dam structure that rock of the present utility model and upstream cofferdam combine, comprise upstream impervious body 1, concrete toe board 2, concrete slab 3, bedding material 4, Transition Materials 5, stockpile 6, downstream protection slope enrockment 7, upstream slope-protection 8, upstream apron 9, upstream lid weigh 10, consolidation grouting 11, curtain grouting 12 and base surface 13.Wherein upstream cofferdam is arranged in the position that figure dotted line is irised out, the upstream dam slope in cofferdam and rock share a part of upstream dam slope, the downstream dam slope in cofferdam is positioned at stockpile 6 inside of rock, top, its slope is positioned near concrete toe board 2, base surface 13 is connected at the bottom of slope, later stage makes downstream, cofferdam dam slope be capped by filling of stockpile 6, then makes cofferdam become a part for rock main body.
As shown in Figure 1, upstream cofferdam is positioned at the packing area of the stockpile 6 at concrete toe board less than the 2 elevation position of rock and shares the upstream dam slope at concrete toe board less than 2 elevation position with rock, and the downstream dam slope of upstream cofferdam extends to base surface 13 from the position of concrete toe board 2 to downstream face; Concrete toe board 2 is positioned at the top of upstream impervious body 1, and upstream impervious body 1 to go deep into downwards in base surface 13 and is provided with consolidation grouting 11 and curtain grouting 12; Arrange upstream slope-protection 8 and upstream lid weighs 10 at the upstream dam slope of upstream cofferdam, upstream lid weighs 10 and to extend along the upstream dam slope of rock to dam crest and the top scope of complete oversite concrete toe board 2.
Transition Materials 5 and upstream apron 9 is provided with successively by upstream to downstream between upstream impervious body 1 and the stockpile 6 being located thereon trip, Transition Materials 5 and upstream apron 9 extend to base surface 13 from upstream cofferdam dam crest, and upstream apron 9 upwards extends to along rock upstream dam slope from upstream cofferdam dam crest and to cover the top weighing 10 with upstream and flush.The upstream dam slope of rock is provided with concrete slab 3, bedding material 4 and Transition Materials 5 from upstream cofferdam dam crest to rock dam crest, and wherein bedding material 4 and Transition Materials 5 extend downward base surface 13 along the downstream face of upstream impervious body 1.
Mainly carry out according to following steps during construction:
(1), after base surface 13 has excavated, carry out upstream impervious body 1 and construct;
(2) carry out and complete the construction of upstream cofferdam cut-off dike;
(3) the upstream and downstream bedding material 4 of upstream impervious body 1 is carried out, the placement grinding construction of Transition Materials 5 and stockpile 6;
(4) complete bottom consolidation grouting 11 and curtain grouting 12 construct, carry out dam embankment and roller compaction construction;
(5) dam concrete toe board 2 is completed and concrete slab 3 is constructed;
(6) above-mentioned steps and seepage proof curtain construction is repeated, until construction terminates.
Certainly, more than just embody rule example of the present utility model, the technical scheme that the utility model also has other embodiment, all employings to be equal to replacement or equivalent transformation to be formed, all drops within the protection domain required by the utility model.

Claims (3)

1. the dam structure of a rock and upstream cofferdam combination, it is characterized in that: upstream cofferdam is positioned at the packing area of the stockpile (6) at concrete toe board (2) the following elevation position of rock and shares the upstream dam slope at the following elevation position of concrete toe board (2) with rock, and the downstream dam slope of upstream cofferdam extends to base surface (13) from the position of concrete toe board (2) to downstream face; Described concrete toe board (2) is positioned at the top of upstream impervious body (1), and upstream impervious body (1) to go deep into downwards in base surface (13) and is provided with consolidation grouting (11) and curtain grouting (12); Arrange upstream slope-protection (8) and upstream lid heavy (10) at the upstream dam slope of upstream cofferdam, upstream lid heavy (10) extends the top scope of also oversite concrete toe board (2) completely along the upstream dam slope of rock to dam crest.
2. the dam structure of rock according to claim 1 and upstream cofferdam combination, it is characterized in that: between upstream impervious body (1) and the stockpile (6) being located thereon trip, be provided with Transition Materials (5) and upstream apron (9) successively by upstream to downstream, Transition Materials (5) and upstream apron (9) extend to base surface (13) from upstream cofferdam dam crest, and upstream apron (9) upwards extends to along rock upstream dam slope the top covering heavy (10) with upstream from upstream cofferdam dam crest flushes.
3. the dam structure of rock according to claim 2 and upstream cofferdam combination, it is characterized in that: on the upstream dam slope of rock, be provided with concrete slab (3), bedding material (4) and Transition Materials (5) from upstream cofferdam dam crest to rock dam crest, wherein bedding material (4) and Transition Materials (5) extend downward base surface (13) along the downstream face of upstream impervious body (1).
CN201520634861.5U 2015-08-21 2015-08-21 Dam structure that panel rock -fill dam and upstream cofferdam combine Active CN205077453U (en)

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Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106245595A (en) * 2016-08-29 2016-12-21 中国电建集团西北勘测设计研究院有限公司 A kind of antiseepage wall bottom maintainable face dam of seepage control system
CN106381880A (en) * 2016-08-31 2017-02-08 中国水利水电第五工程局有限公司 Treatment method of peat soil dam foundation
CN106567365A (en) * 2016-11-04 2017-04-19 梁军 Earth and rockfill dam longitudinal reinforcement construction method
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
CN110792089A (en) * 2019-10-17 2020-02-14 龙德建设有限公司 Cofferdam construction method for rock block, thick plastic cloth and bagged clay on dam slope of earth-rock dam

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106245595A (en) * 2016-08-29 2016-12-21 中国电建集团西北勘测设计研究院有限公司 A kind of antiseepage wall bottom maintainable face dam of seepage control system
CN106381880A (en) * 2016-08-31 2017-02-08 中国水利水电第五工程局有限公司 Treatment method of peat soil dam foundation
CN106381880B (en) * 2016-08-31 2018-10-19 中国水利水电第五工程局有限公司 The processing method of the peat soil dam foundation
CN106567365A (en) * 2016-11-04 2017-04-19 梁军 Earth and rockfill dam longitudinal reinforcement construction method
CN106567365B (en) * 2016-11-04 2019-02-19 梁军 Earth and rockfill dam longitudinal reinforcement construction method
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
CN110792089A (en) * 2019-10-17 2020-02-14 龙德建设有限公司 Cofferdam construction method for rock block, thick plastic cloth and bagged clay on dam slope of earth-rock dam

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