CN104863098B - Danger-elimination refitting method for stilling pool downstream energy dissipater - Google Patents
Danger-elimination refitting method for stilling pool downstream energy dissipater Download PDFInfo
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- CN104863098B CN104863098B CN201510247184.6A CN201510247184A CN104863098B CN 104863098 B CN104863098 B CN 104863098B CN 201510247184 A CN201510247184 A CN 201510247184A CN 104863098 B CN104863098 B CN 104863098B
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- stiling basin
- apron section
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/06—Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
Abstract
The invention discloses a danger-elimination refitting method for a stilling pool downstream energy dissipater. The stilling pool downstream energy dissipater comprises an apron extension section and an anti-scour trench which are sequentially arranged. A tail ridge is arranged at the tail end of a stilling pool. The method includes the following steps of laying reinforced concrete used for reinforcement on the surface layer of the slope apron extension section, arranging a plurality of continuous stilling ridges on the slope apron extension section, and arranging an anti-scour key wall at the tail end of the slope apron extension section. The optimized stilling ridge arrangement method for the downstream apron extension section is obtained through danger-elimination reinforcement and refitting of the downstream stilling pool of a river sluice in danger, according to the tail ridge arrangement of the downstream stilling pool and on the basis of reinforcing the downstream apron extension section in danger, a new route is created for danger-elimination refitting of a plurality of river sluice downstream energy dissipaters which are low in water level due to downward river bed downcutting of downstream river channels, the project amount and investment can be greatly saved, and safety of project running is ensured. The danger-elimination refitting method for the stilling pool downstream energy dissipater can be widely applied to the field of hydraulic engineering.
Description
Technical field
The present invention relates to hydraulic engineering field, especially a kind of stiling basin downstream dissipator of energy work is except danger remodeling method.
Background technology
Low water head regulating dam flood-discharge energy-dissipating many employings disspation through hydraudic jimp of present situation, stiling basin, apron section and anti-scour trench etc. are i.e. set in regulating dam downstream, utilize stiling basin energy dissipation by hydraulic jump, and remain flow energy with apron section abatement stiling basin downstream, adjust velocity flow profile, with making uniform fluid flow diffusion etc., washing away downstream river course riverbed with reduction earial drainage, its concrete structure can refer to Fig. 1.
At present, owing to numerous regulating dam downstream river course river-bed deepened, water level reduce, cause regulating dam downstream dissipator of energy work be in danger (as apron section destroy by rush of water, stiling basin avalanche and destruction etc.), reinforcement and transformation need to be carried out.After regulating dam downstream river course water level reduces, if still can utilize after the downstream dissipator of energy work that it is in danger is engineered, the danger remodeling method that removes generally used is: reinforce and on the basis of transformation at present situation stiling basin, apron section and anti-scour trench excavation will fall, set up secondary stilling basin downstream, and apron section and anti-scour trench etc. are set again in secondary stilling basin downstream, classified energy-dissipation is used to make final stage stiling basin go out stream relatively smooth-going and downstream river course Current connectin, to guarantee the safe operation of engineering.
The flow condition using two-stage stiling basin to run due to regulating dam downstream is more complicated, it is bigger except danger modification scheme quantities, construction investment is the most, and in engineered construction, restricted condition is more, construction is inconvenient, therefore, certain difficulty is brought to numerous regulating dam downstream dissipator of energy works except danger transformation.
Summary of the invention
In order to solve above-mentioned technical problem, it is an object of the invention to: provide a kind of low cost, the stiling basin downstream dissipator of energy work of high security removes danger remodeling method.
The technical solution adopted in the present invention is: a kind of stiling basin downstream dissipator of energy work is except danger remodeling method, described stiling basin downstream dissipator of energy work includes the slope apron section and anti-scour trench set gradually, described stiling basin tail end is provided with stiling basin tail bank, and the method includes following steps:
A, the top layer of slope apron section lay one layer for reinforce reinforced concrete；
C, a plurality of seriality baffle wall style is set in slope apron section；
D, described slope apron section tail end are provided with erosion control key-wall.
Further, being additionally provided with horizontal apron section between described stiling basin and slope apron section, described step A also includes: lay one layer on the top layer of horizontal apron section for the reinforced concrete reinforced.
Further, also include step B: row's baffle pier is set in horizontal apron section front end between described step A and step C, one seriality tail bank is set at horizontal apron section tail end simultaneously.
Further, described baffle pier is arranged at the 1/3-1/2 length of horizontal apron section.
Further, described baffle pier top flushes with stiling basin tail bank top, and described seriality tail bank top is not more than 0.3m with the depth displacement at stiling basin tail bank top.
Further, in a plurality of seriality baffle wall style in described step C, it is positioned at the first bar seriality baffle wall style top of apron section front end, slope with the depth displacement of adjacent two seriality baffle wall style in the depth displacement at horizontal apron section tail end seriality tail bank top, a plurality of seriality baffle wall style no more than 0.4-0.5m.
Further, the height of a plurality of seriality baffle wall style in described step C is gradually lowered from apron section front end, slope toward tail end, the altitude range arranged is 0.4-0.7m, and in described a plurality of seriality baffle wall style, the floor projection distance between adjacent two seriality baffle wall style is 6m.
Further, in described step A, the thickness of reinforced concrete is 0.3-0.4m.
Further, described step C also includes: backfilling inverted triangle body reinforced concrete bottom the upstream face of seriality baffle wall style, the end face of described inverted triangle body reinforced concrete is horizontal plane.
Further, the parameter that arranges of the anti-scour trench in described step D calculates according to the flow speed value of anti-scour trench section, and the flow speed value of described anti-scour trench section calculates according to earial drainage discharge per unit widths at different levels and the section water depth value of apron section tail end downstream, slope anti-scour trench and obtains.
The invention has the beneficial effects as follows: the inventive method is by the regulating dam downstream stiling basin reinforcement being in danger and transformation, and arrange and on the basis of downstream apron section of being in danger is reinforced according to its stiling basin tail bank, baffle pier and the baffle wall style method for arranging of the downstream apron section of optimization are obtained, remove danger transformation for numerous regulating dam downstream dissipator of energy works because of downstream river course river-bed deepened, water level reduction to open up a new way, quantities and investment can be greatly saved, it is easy to construction, it is ensured that the safety of engineering operation.
Accompanying drawing explanation
Fig. 1 is energy dissipater's schematic diagram of prior art；
Fig. 2 is the inventive method flow chart；
Fig. 3 is embodiment of the present invention schematic diagram；
Fig. 4 is baffle wall style and inverted triangle body reinforced concrete partial enlarged drawing in Fig. 3.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described further:
With reference to Fig. 2, a kind of stiling basin downstream dissipator of energy work is except danger remodeling method, and described stiling basin downstream dissipator of energy work includes the slope apron section and anti-scour trench set gradually, and described stiling basin tail end is provided with stiling basin tail bank, and the method includes following steps:
A, the top layer of slope apron section lay one layer for reinforce reinforced concrete；
C, a plurality of seriality baffle wall style is set in slope apron section；
D, described slope apron section tail end are provided with erosion control key-wall.
With reference to Fig. 3, being further used as preferred embodiment, be additionally provided with horizontal apron section between described stiling basin and slope apron section, described step A also includes: lay one layer on the top layer of horizontal apron section for the reinforced concrete reinforced.
The effect laying one layer of reinforced concrete in step A is increase horizontal apron section and the structural strength of slope apron section.
It is further used as preferred embodiment, in order to cut down the flow velocity of stiling basin tail end tail bank downstream horizontal apron section, make horizontal apron section earial drainage relatively smooth out entrance downstream ramp apron section, also include step B: row's baffle pier is set in horizontal apron section front end between described step A and step C, one seriality tail bank is set at horizontal apron section tail end simultaneously.
Being further used as preferred embodiment, described baffle pier is arranged at the 1/3-1/2 length of horizontal apron section.
Being further used as preferred embodiment, described baffle pier top flushes with stiling basin tail bank top, and described seriality tail bank top is not more than 0.3m with the depth displacement at stiling basin tail bank top.
It is further used as preferred embodiment, in a plurality of seriality baffle wall style in described step C, it is positioned at the first bar seriality baffle wall style top of apron section front end, slope with the depth displacement of adjacent two seriality baffle wall style in the depth displacement at horizontal apron section tail end seriality tail bank top, a plurality of seriality baffle wall style no more than 0.4-0.5m.
The transverse section of described seriality baffle wall style is trapezoidal, and upstream upstream face is vertical surface.
It is further used as preferred embodiment, the height of a plurality of seriality baffle wall style in described step C is gradually lowered from apron section front end, slope toward tail end, the altitude range arranged is 0.4-0.7m, and in described a plurality of seriality baffle wall style, the floor projection distance between adjacent two seriality baffle wall style is 6m.
With reference to Fig. 3, wherein slope apron section is provided with 6 seriality baffle wall style, and it the most highly may be configured as: the 1st, 2 articles of baffle wall style height be 0.65m, the 3rd, a 4 article baffle wall style height be 0.55m, the 5th article of baffle wall style height be 0.5m, the 6th article of baffle wall style height be 0.4m.
With reference to Fig. 3, in described step C, it is apron section slope, slope line and horizontal line angle according to the gradient i(i=tg θ, θ of slope apron section), depth displacement 0.4-0.5m between selected each baffle wall style top, floor projection distance 6m, then calculate the height value of each baffle wall style.
Being further used as preferred embodiment, in described step A, the thickness of reinforced concrete is 0.3-0.4m.
With reference to Fig. 4, being further used as preferred embodiment, described step C also includes: backfilling inverted triangle body reinforced concrete bottom the upstream face of seriality baffle wall style, the end face of described inverted triangle body reinforced concrete is horizontal plane.
If above-mentioned calculated baffle wall style height value is relatively big, exceedes the altitude range 0.7-0.4m arranged, then can backfill inverted triangle body reinforced concrete bottom the upstream face of baffle wall style, not only can reduce baffle wall style height, also it is served the effect of reinforcing simultaneously.
It is further used as preferred embodiment, the parameter that arranges of the anti-scour trench in described step D calculates according to the flow speed value of anti-scour trench section, and the flow speed value of described anti-scour trench section calculates according to earial drainage discharge per unit widths at different levels and the section water depth value of apron section tail end downstream, slope anti-scour trench and obtains.
The parameter that arranges of described anti-scour trench includes the hydraulics of its protective material, the degree of depth and scope checking and is: be the operation hydrology group let out of the corresponding gate controls at different levels of normal pool level time according to regulating dam upstream and gate standard-sized sheet flood discharge (including designed flood frequency flow and check flood frequency flow) runs hydrology group time and draws.
Embodiment as shown in Figure 3 is applied satisfactory for result in actual regulating dam is except danger improvement project, run show through reinforcement and improved flood discharge in flood season, the operation fluidised form of regulating dam downstream dissipator of energy work is more identical with hydraulic model test situation, and engineering operation is all right.
It is above the preferably enforcement of the present invention is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art can also make all equivalents or replacement on the premise of spirit of the present invention, and conversion or the replacement of these equivalents are all contained in the application claim limited range.
Claims (9)
1. a stiling basin downstream dissipator of energy work is except danger remodeling method, it is characterised in that: described stiling basin downstream dissipator of energy work includes the slope apron section and anti-scour trench set gradually, and described stiling basin tail end is provided with stiling basin tail bank, and the method includes following steps:
A, the top layer of slope apron section lay one layer for reinforce reinforced concrete；
C, a plurality of seriality baffle wall style is set in slope apron section；
The height of a plurality of seriality baffle wall style in described step C is gradually lowered from apron section front end, slope toward tail end, and the altitude range of setting is 0.4-0.7m, and in described a plurality of seriality baffle wall style, the floor projection distance between adjacent two seriality baffle wall style is 6m；
D, described slope apron section tail end are provided with erosion control key-wall.
A kind of stiling basin downstream dissipator of energy work the most according to claim 1 is except danger remodeling method, it is characterized in that: being additionally provided with horizontal apron section between described stiling basin and slope apron section, described step A also includes: lay one layer on the top layer of horizontal apron section for the reinforced concrete reinforced.
A kind of stiling basin downstream dissipator of energy work the most according to claim 2 is except danger remodeling method, it is characterized in that: also include step B: row's baffle pier is set in horizontal apron section front end between described step A and step C, one seriality tail bank is set at horizontal apron section tail end simultaneously.
A kind of stiling basin downstream dissipator of energy work the most according to claim 3 is except danger remodeling method, it is characterised in that: described baffle pier is arranged at the 1/3-1/2 length of horizontal apron section.
A kind of stiling basin downstream dissipator of energy work the most according to claim 3 is except danger remodeling method, it is characterised in that: described baffle pier top flushes with stiling basin tail bank top, and described seriality tail bank top is not more than 0.3m with the depth displacement at stiling basin tail bank top.
A kind of stiling basin downstream dissipator of energy work the most according to claim 3 is except danger remodeling method, it is characterized in that: in a plurality of seriality baffle wall style in described step C, be positioned at the first bar seriality baffle wall style top of apron section front end, slope with the depth displacement of adjacent two seriality baffle wall style in the depth displacement at horizontal apron section tail end seriality tail bank top, a plurality of seriality baffle wall style no more than 0.5m.
A kind of stiling basin downstream dissipator of energy work the most according to claim 1 and 2 is except danger remodeling method, it is characterised in that: in described step A, the thickness of reinforced concrete is 0.3-0.4m.
A kind of stiling basin downstream dissipator of energy work the most according to claim 1 is except danger remodeling method, it is characterized in that: described step C also includes: backfilling inverted triangle body reinforced concrete bottom the upstream face of seriality baffle wall style, the end face of described inverted triangle body reinforced concrete is horizontal plane.
A kind of stiling basin downstream dissipator of energy work the most according to claim 1 is except danger remodeling method, it is characterized in that: the parameter that arranges of described anti-scour trench calculates according to the flow speed value of anti-scour trench section, and the flow speed value of described anti-scour trench section calculates according to earial drainage discharge per unit widths at different levels and the section water depth value of apron section tail end downstream, slope anti-scour trench and obtains.
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| CN201510247184.6A CN104863098B (en) | 2015-05-14 | 2015-05-14 | Danger-elimination refitting method for stilling pool downstream energy dissipater |
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| CN201510247184.6A CN104863098B (en) | 2015-05-14 | 2015-05-14 | Danger-elimination refitting method for stilling pool downstream energy dissipater |
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| CN104863098B true CN104863098B (en) | 2017-01-11 |
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| CN106638460A (en) * | 2017-01-18 | 2017-05-10 | 中国电建集团北京勘测设计研究院有限公司 | Protective structure for water conservancy and hydropower engineering energy-dissipation area |
| CN107288105A (en) * | 2017-07-11 | 2017-10-24 | 浙江省水利水电勘测设计院 | A kind of special-shaped block energy-dissipating structure |
| CN108005038B (en) * | 2017-11-30 | 2020-05-19 | 中国电建集团成都勘测设计研究院有限公司 | Accumulated slag water collecting structure of bottom flow stilling pool |
| CN109235385A (en) * | 2018-09-21 | 2019-01-18 | 昆明理工大学 | A kind of apron |
| CN109505343B (en) * | 2018-12-12 | 2024-01-23 | 中国建筑第八工程局有限公司 | Drainage mouth reconstruction structure of drainage culvert |
| CN110004890A (en) * | 2019-03-27 | 2019-07-12 | 昆明理工大学 | A kind of roller energy dissipator |
| CN111576361A (en) * | 2020-06-02 | 2020-08-25 | 广州地理研究所 | Flood discharge gate energy dissipation scour protection equipment |
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| SU1759996A1 (en) * | 1989-09-01 | 1992-09-07 | Всесоюзный научно-исследовательский институт гидротехники и мелиорации им.А.Н.Костякова | Of down apron of multispan dam |
| RU2233362C1 (en) * | 2003-05-30 | 2004-07-27 | Носов Евгений Георгиевич | Reconstruction method for spill-away of high concrete arched barrage (variants) |
| CN203782664U (en) * | 2014-05-05 | 2014-08-20 | 罗永平 | Anti-scour structure of sandy foundation water gate |
| CN203878547U (en) * | 2014-05-30 | 2014-10-15 | 中国水电顾问集团贵阳勘测设计研究院有限公司 | Novel structure for stilling pool |
| CN104452690A (en) * | 2014-12-05 | 2015-03-25 | 长江勘测规划设计研究有限责任公司 | Concrete roughing pier flexible apron structure and construction method |
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