CN101368380B - Roughening and energy dissipating method for flood discharging groove - Google Patents
Roughening and energy dissipating method for flood discharging groove Download PDFInfo
- Publication number
- CN101368380B CN101368380B CN2008100462575A CN200810046257A CN101368380B CN 101368380 B CN101368380 B CN 101368380B CN 2008100462575 A CN2008100462575 A CN 2008100462575A CN 200810046257 A CN200810046257 A CN 200810046257A CN 101368380 B CN101368380 B CN 101368380B
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- Prior art keywords
- discharging groove
- flood discharging
- flood discharge
- energy dissipating
- roughening
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Abstract
The invention discloses a flood discharge trough roughening and energy dissipating method. The method is characterized in that the bottom of one thirds of the flood discharge trough at the upper reach is processed to be a smooth face and the bottom of the rest two thirds is roughened manually through screes or prefabricated cement blocks with various shapes or through directly fabricating or cutting lug bosses in various shapes to reach the effect of dissipating energy so as to reduce energy dissipation pressure at the lower reach of the flood discharge trough and impact to the riverway. The method is simple and easy and is widely applicable to energy dissipation in both low and medium water head hydropower stations, flood discharge troughs at the lower reaches of hydroelectric junctions and tail water hydroelectric junctions of thermal power plants. The method is particularly applicable to projects, in which the riverway at the lower reach of the flood discharge trough has multiple joints in the groundsill and is weak in scouring resistance.
Description
Technical field
The invention belongs to the energy dissipating method technical field of flood discharging groove in the hydraulic engineering, be specifically related to a kind of roughening and energy dissipating method of flood discharging groove.
Background technology
In the design and construction of hydraulic engineering, must consider when flood comes, exhaustless current to be carried out the technical measures that wash with watercolours is let out, to guarantee the safety of water construction thing.Flood discharging groove, flood discharging tunnel, sluice are the major projects of structure of hydropower station, also are the water construction things that wash with watercolours is let out unnecessary current in the hydraulic engineering.Building reservoir filling for crowd drinking-water, water is quoted in industry, and during agricultural irrigation, flood discharging groove, flood discharging tunnel all are ingredient indispensable in the reservoir building, especially flood discharging groove, also builds conveniently with it, and management easily, and is economical and practical and gain great popularity.
Flood discharging groove is that wash with watercolours is let out unnecessary current a kind of flood releasing structure commonly used, it also is the first-selection in the flood releasing structure, it has enough discharge capacities except possessing, and also will guarantee during operation the safety of self and adjacent structure, and the stream that sluices properly is connected with former streamflow.In addition, in the design and construction of flood discharging groove, to be subjected to the influence of landform, geology and cost restriction toward contact, especially flood discharging groove has been concentrated the energy that wash with watercolours sluices and flows, thereby require the flood discharging groove downstream river course that good geological conditions will be arranged, if flood discharging groove downstream river course geological conditions is bad, often be restricted in its design and construction, thereby the Dissipation of Energy of solution flood discharging groove is extensively to utilize the bottleneck of flood discharging groove.
Summary of the invention
The objective of the invention is bottleneck problem, a kind of roughening and energy dissipating method of flood discharging groove is provided at present flood discharging groove utilization.This method with flood discharging groove carry out the people for add rough after, can increase the resistance to water-flow of flood discharging groove greatly, reach the effect of flood-discharge energy-dissipating.
The roughening and energy dissipating method of a kind of flood discharging groove provided by the invention, this method are that flood discharging groove is made shiny surface by the bottom land of upstream three/part, and it is rough for adding to carry out the people at the flood discharging groove bottom land of two parts of its excess-three branch, to reach the effect of energy dissipating.
In order to make the flood discharging groove effect of energy dissipation better, the present invention also can adopt such technical measures: soon the flood discharging groove people is for adding rough part the closer to downstream river course in this method, and its rugosity is big more.
The people of the inventive method is that adding rough is with cobble or with prefabricated different cement block or directly bottom land is produced or dig out different projection and be used for adding rough.
The present invention has the following advantages:
1, because the inventive method is that flood discharging groove roughly has been divided into three sections, make shiny surface at three/a part of bottom land by the upstream, and it is rough for adding to carry out the people at the flood discharging groove bottom land of two parts of its excess-three branch, thereby both be convenient to current and can enter the flood discharging groove wash with watercolours smoothly and let out, current are flowed through behind the flood discharging groove, be subjected to the people to add rough influence, what increase current crosses the water roughness, reach the effect of energy dissipating, thereby reduce the energy dissipating pressure in flood discharging groove downstream and washing away the river course.
2; owing to of the present inventionly specifically add rough mode and can be various ways; as in the river course, Plain; can add rough as adding rough object or directly bottom land being produced different projection with the prefabricated cement block of making in advance or then and there; as in the mountain channel; then can utilize the cobble in the river course to add rough as adding rough object or directly bottom land (rock) being dug different projection; thereby can suit measures to local conditions; the battle line of maybe will constructing elongates; thereby shorten the engineering time, save construction costs, maybe can utilize local material; to reduce the consumption of cement; thereby reach the reduction construction costs, energy efficiency, the technique effect of protection environment.
3, the inventive method is simple, applied widely, the power station of low water head, the energy dissipating of hydropower complex downstream flood discharging groove in not only can be used for, but also can be used for the energy dissipating of the tail water hub station of thermal power plant, it is many to be particularly useful for flood discharging groove downstream river course ground joint, the engineering that the antiscour energy is weak.
The specific embodiment
Providing embodiment below further specifies so that the present invention is made; but given embodiment can not be interpreted as limiting the scope of the invention, thereby nonessential improvement and adjustment that the professional and technical personnel has done according to the content and the design philosophy of the invention described above also should belong to protection scope of the present invention.
Embodiment 1
The flood discharging groove of present embodiment is because of being in the river course, Plain, its people by the flood discharging groove bottom land of downstream 2/3rds parts is that adding rough is directly with cement bottom land to be produced different projection as adding rough object, according to the closer to downstream river course, the requirement that its rugosity is big is more built.
Embodiment 2
The flood discharging groove of present embodiment is because of also being to be in the river course, Plain, its people by the flood discharging groove bottom land of downstream 2/3rds parts be add rough usefulness in advance or the different prefabricated cement block of making then and there as adding rough object, according to the closer to downstream river course, the requirement that its rugosity is big is more built.
Embodiment 3
The flood discharging groove of present embodiment is because of being in the mountain channel, and its people by the flood discharging groove bottom land of downstream 2/3rds parts adds roughly to utilize cobble in the river course as adding rough object, and according to the closer to downstream river course, the requirement that its rugosity is big is more built.
Embodiment 4
The flood discharging groove of present embodiment is because of being in the mountain channel, and on rock, dig, its bottom land by upstream three/part is made shiny surface with cement, and the people of the flood discharging groove bottom land of two parts of its excess-three branch is that adding rough is directly rock-cut to be gone out different projection as adding rough object, and according to the closer to downstream river course, the requirement that its rugosity is big is more built.
Claims (2)
1. the roughening and energy dissipating method of a flood discharging groove, this method is that flood discharging groove is made shiny surface by the bottom land of upstream three/part, and it is rough for adding to carry out the people at the flood discharging groove bottom land of two parts of its excess-three branch, to reach the effect of energy dissipating, wherein the people is that adding rough is with cobble or with prefabricated different cement block or directly bottom land is produced or dig out different projection and be used for adding rough.
2. the roughening and energy dissipating method of flood discharging groove according to claim 1 is characterized in that the flood discharging groove people is for adding rough part the closer to downstream river course in this method, and its rugosity is big more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100462575A CN101368380B (en) | 2008-10-10 | 2008-10-10 | Roughening and energy dissipating method for flood discharging groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100462575A CN101368380B (en) | 2008-10-10 | 2008-10-10 | Roughening and energy dissipating method for flood discharging groove |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101368380A CN101368380A (en) | 2009-02-18 |
| CN101368380B true CN101368380B (en) | 2010-09-15 |
Family
ID=40412369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100462575A Expired - Fee Related CN101368380B (en) | 2008-10-10 | 2008-10-10 | Roughening and energy dissipating method for flood discharging groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101368380B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926360A (en) * | 2012-11-22 | 2013-02-13 | 中国水电顾问集团中南勘测设计研究院 | Discharge chute with projections |
| CN102912772B (en) * | 2012-11-22 | 2015-05-13 | 中国电建集团中南勘测设计研究院有限公司 | Discharge chute |
| CN103225292B (en) * | 2013-05-27 | 2015-10-28 | 珠江水利委员会珠江水利科学研究院 | A kind of dam face energy dissipation tool |
| CN103437332A (en) * | 2013-09-05 | 2013-12-11 | 中国水电顾问集团中南勘测设计研究院 | Protruding body and discharge chute for mounting protruding body |
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2008
- 2008-10-10 CN CN2008100462575A patent/CN101368380B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101368380A (en) | 2009-02-18 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20131010 |