CN103321191A - Dam body flood discharging and energy dissipating arranging method for concrete-faced rockfill dam - Google Patents
Dam body flood discharging and energy dissipating arranging method for concrete-faced rockfill dam Download PDFInfo
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- CN103321191A CN103321191A CN2013102504408A CN201310250440A CN103321191A CN 103321191 A CN103321191 A CN 103321191A CN 2013102504408 A CN2013102504408 A CN 2013102504408A CN 201310250440 A CN201310250440 A CN 201310250440A CN 103321191 A CN103321191 A CN 103321191A
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Abstract
The invention discloses a dam body flood discharging and energy dissipating arranging method for a concrete-faced rockfill dam. The method includes that 1 a spillway is arranged along the downstream dam face in the direction from the dam top of the concrete-faced rockfill dam to a river bed at the dam bottom, the spillway is composed of an overflow weir arranged at the dam top, a discharging groove formed in the downstream dam face and a stilling pool arranged at the position of the river bed at the dam bottom, the weir top width of the overflow weir is 1-3 times as large as the seam width of a concrete face, the seam width of the overflow weir is consistent with that of the concrete face, the width of a weir head of the overflow weir is smaller than or equal to 4m, and the single-width discharging quantity is smaller than or equal to 15m<3>/s*m; 2 a base plate of the discharging groove is arranged to be of a step structure and formed by pouring concrete or laying squared stones, the step height is 0.8m-1.2m, and pull steel bars are arranged in steps and embedded in a dam body rockfill body. The method has the advantages of optimizing junction layout, solving the problem that the spillway on the bank side is difficult to arrange, omitting excavation of spillways in bank slopes and reduces project investment.
Description
Technical field
The present invention relates to the medium and small project Concrete Face Rockfill Dam, especially relate to the flood discharge of Concrete Face Rockfill Dam dam body and energy dissipating method for arranging.
Background technology
Concrete Face Rockfill Dam outlet structure escape works arrangement form, should be comprehensively more definite according to the hinge condition, at the favourable dam site of orographic condition, be main outlet structure escape works with open spillway generally, when arranging that open spillway truly has at need, also can adopt flood-discharge tunnel, but should adopt the open type import, connect flood discharging tunnel down.For the medium and small engineering Concrete Face Rockfill Dam of height of dam less than 70m, little when flood discharge, when the riverbed basement rock is better, for saving construction investment, can the arrangement form that flood spillway combines with the step energy dissipating be set at dam body, but yet there are no all relevant reports.
Summary of the invention
The object of the invention is to provide the few Concrete Face Rockfill Dam dam body flood discharge of a kind of construction investment and energy dissipating method for arranging.
For achieving the above object, the present invention takes following technical proposals:
Concrete Face Rockfill Dam dam body of the present invention flood discharge and energy dissipating method for arranging, carry out according to following step:
The first step, the riverbed direction arranges flood spillway at the bottom of the Concrete Face Rockfill Dam dam crest is along the downstream dam facing to the dam; Described flood spillway is made up of absorption basin three parts of position, riverbed of letting out at the bottom of groove and the dam of the overflow weir that is arranged in dam crest, downstream dam facing; The weir crest width of described overflow weir is 1-3 times of concrete slab parting width; The parting width of overflow weir is consistent with the parting width of concrete slab; Weir head≤the 4m of overflow weir, single wide discharge≤15m
3/ sm;
Second step, let out trough floor and be set to ledge structure, adopt concreting or work stone to build by laying bricks or stones, shoulder height 0.8m-1.2m is provided with lacing wire and is embedded in the dam body rockfill in the step.
The invention has the advantages that the technical scheme of taking face dam spillway on dam body, step energy dissipating, disspation through hydraudic jimp, be embodied as:
1, flood spillway is arranged in the rock dam body, has optimized the hinge layout, has solved the problem that the bank flood spillway is difficult to arrange, has saved the excavation of bank slope flood spillway;
2, the weir crest current have alleviated the burden of downstream energy-dissipating installation greatly along letting out groove step aeration, deceleration, energy dissipating step by step; By letting out the step energy dissipating of groove, the following sluicing stream energy of flood spillway can be eliminated 50%-70%;
3, flood spillway is terminal adopts the absorption basin energy dissipating, has guaranteed to flow out that the current of absorption basin are can be smooth-going stable enters downstream river course, has improved energy dissipating efficient, has reduced washing away downstream river course;
4, hinge is arranged compactness, has reduced construction investment.
Description of drawings
Fig. 1 is Concrete Face Rockfill Dam spillway on dam body layout schematic diagram of the present invention.
Fig. 2 is Concrete Face Rockfill Dam spillway on dam body cross-sectional view of the present invention.
The specific embodiment
As shown in Figure 1, 2, Concrete Face Rockfill Dam dam body of the present invention flood discharge and energy dissipating method for arranging, carry out according to following step:
The first step, the riverbed direction arranges flood spillway at the bottom of Concrete Face Rockfill Dam dam crest 1 is along downstream dam facing 2 to the dam; Described flood spillway is made up of absorption basin 5 three parts of position, riverbed of letting out at the bottom of groove 4 and the dam of the overflow weir 3 that is arranged in dam crest 1, downstream dam facing 2; The weir crest width of described overflow weir 3 is 3 times of concrete slab parting width; The parting width of overflow weir 3 is consistent with the parting width of concrete slab; Weir head≤the 4m of overflow weir 3, single wide discharge≤15m
3/ sm;
Second step, let out groove 4 base plates and be set to step 6 structures, adopt concreting or work stone to build by laying bricks or stones, described step 6 height 0.8m-1.2m are provided with lacing wire 7 and are embedded in the dam body rockfill in the step 6.
Claims (1)
1. Concrete Face Rockfill Dam dam body flood discharge and energy dissipating method for arranging is characterized in that: carry out according to following step:
The first step, the riverbed direction arranges flood spillway at the bottom of Concrete Face Rockfill Dam dam crest (1) is along downstream dam facing (2) to the dam; Described flood spillway is made up of absorption basin (5) three parts of position, riverbed of letting out at the bottom of groove (4) and the dam of the overflow weir that is arranged in dam crest (1) (3), downstream dam facing (2); The weir crest width of described overflow weir (3) is 1-3 times of concrete slab parting width; The parting width of overflow weir (3) is consistent with the parting width of concrete slab; Weir head≤the 4m of overflow weir (3), single wide discharge≤15m
3/ sm;
Second step, let out groove (4) base plate and be set to step (6) structure, adopt concreting or work stone to build by laying bricks or stones, step (6) height 0.8m-1.2m is provided with lacing wire (7) and is embedded in the dam body rockfill in the step (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102504408A CN103321191A (en) | 2013-06-24 | 2013-06-24 | Dam body flood discharging and energy dissipating arranging method for concrete-faced rockfill dam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102504408A CN103321191A (en) | 2013-06-24 | 2013-06-24 | Dam body flood discharging and energy dissipating arranging method for concrete-faced rockfill dam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103321191A true CN103321191A (en) | 2013-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102504408A Pending CN103321191A (en) | 2013-06-24 | 2013-06-24 | Dam body flood discharging and energy dissipating arranging method for concrete-faced rockfill dam |
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| CN (1) | CN103321191A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104264639A (en) * | 2014-09-11 | 2015-01-07 | 四川大学 | Underflow type stair stilling pool energy consumption system |
| CN105442499A (en) * | 2015-12-29 | 2016-03-30 | 云南华电金沙江中游水电开发有限公司 | Self-supporting type panel structural system for 300m-level concrete faced rockfill dam and mounting method for self-supporting type panel structural system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2818548Y (en) * | 2005-09-06 | 2006-09-20 | 中国水电顾问集团华东勘测设计研究院 | Spillway of stone dam body with reinforced concrete panel |
| JP2009228315A (en) * | 2008-03-24 | 2009-10-08 | National Agriculture & Food Research Organization | Damping structure for falling water sound-falling water flow in water zone |
-
2013
- 2013-06-24 CN CN2013102504408A patent/CN103321191A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2818548Y (en) * | 2005-09-06 | 2006-09-20 | 中国水电顾问集团华东勘测设计研究院 | Spillway of stone dam body with reinforced concrete panel |
| JP2009228315A (en) * | 2008-03-24 | 2009-10-08 | National Agriculture & Food Research Organization | Damping structure for falling water sound-falling water flow in water zone |
Non-Patent Citations (2)
| Title |
|---|
| 曹骏: "台阶状混凝土垫层在面板堆石坝坝顶溢洪道中的运用研究", 《水力发电》 * |
| 田嘉宁: "台阶式泄水建筑物水力特性试验研究", 《博士论文电子期刊》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104264639A (en) * | 2014-09-11 | 2015-01-07 | 四川大学 | Underflow type stair stilling pool energy consumption system |
| CN104264639B (en) * | 2014-09-11 | 2016-04-20 | 四川大学 | Underflow type step absorption basin energy-dissipating system |
| CN105442499A (en) * | 2015-12-29 | 2016-03-30 | 云南华电金沙江中游水电开发有限公司 | Self-supporting type panel structural system for 300m-level concrete faced rockfill dam and mounting method for self-supporting type panel structural system |
| CN105442499B (en) * | 2015-12-29 | 2017-07-18 | 云南华电金沙江中游水电开发有限公司 | 300m grades of rock self-bearing type panel construction systems and installation method |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130925 |