CN1320213C - Sand-trap water-take dam - Google Patents
Sand-trap water-take dam Download PDFInfo
- Publication number
- CN1320213C CN1320213C CNB2005100945844A CN200510094584A CN1320213C CN 1320213 C CN1320213 C CN 1320213C CN B2005100945844 A CNB2005100945844 A CN B2005100945844A CN 200510094584 A CN200510094584 A CN 200510094584A CN 1320213 C CN1320213 C CN 1320213C
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- water
- dam
- sand
- overflow weir
- take
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
This invention relates to a sand-block water-taking dam. Diversion galleries are arranged in the a sand-block dam and a spillway. A water inlet of the diversion gallery is arranged at the rear part of the surface of an overflow weir which is used for forming the spillway. Fences are arranged on the surface of the overflow weir. Fences are arranged on the spillway and the sand-block dam to take water. The water take function of the sand-block dam is enhanced on the basis of ensuring that the sand-block dam performs a sand-block function. The water-taking project of a fence type hill stream is embedded into the sand-block dam by water-taking equipment to make the water-taking project of the fence type hill stream combined with the sand-block dam into one body, and the function of the water-taking project. When water quantity is small at a normal flow season, the project performs the function of the fence type hill stream water-taking project to take the water. When the water quantity is large at a flood season, the project simultaneously performs the functions of the sand-block dam and the water-taking project. The present invention can block sand and take the water, and clean the mud of the fences and carry out the maintenance work of the fences at the normal flow season.
Description
Technical field
The present invention relates to have both design, especially the chad type sand-trap water-take dam of water intaking and the sand-trap water-take dam of sediment trapping function.
Background technology
Traditional check dam mainly is the effect of performance sediment trapping, does not have the function of water intaking, guarantees that it is necessary condition that check dam has enough volumes to come silt in certain time limit.If, need water intake facilities be set in addition in the upstream on dam from check dam water intaking, like this, the effective storage of the check dam that certainly will account for, the purpose that this has violated the check dam sediment trapping can shorten application life of check dam.And, both made water intake facilities such as the upstream intake tower that is arranged on the dam or many blank pipes, the danger that is destroyed by chad is also arranged.In addition, though can water intake engineering be set separately in the downstream of check dam, avoiding the destruction of chad to water intake facilities,, can increase engineering cost so undoubtedly, be uneconomic.
Summary of the invention
The objective of the invention is to propose a kind of sand-trap water-take dam that has both water intaking and sediment trapping function, increase the function of check dam, promptly on the basis that guarantees its sediment trapping function of check dam performance, make check dam possess the water intaking function again, thus a kind of novel hydraulic structure of design.It neither takies the effective storage of check dam, can fetch water from check dam again.
The object of the present invention is achieved like this: sand-trap water-take dam, check dam is provided with the flood spillway overflow weir, be provided with the overflow weir jetty at the rear portion of overflow weir, it is characterized in that being provided with water-drawing corridor at check dam and flood spillway overflow weir inside, the water inlet of water-drawing corridor is located at the rear portion on flood spillway overflow weir surface, and the surface is provided with barrier.
The flood spillway of check dam is provided with the function that increases check dam, and the barrier diversion that is provided with by the water-drawing corridor in the overflow weir again promptly proposes a kind of dam of fetching water with the sediment trapping function that has both on the basis that guarantees its sediment trapping function of check dam performance.
The sand-trap water-take dam that the present invention is constructed, its characteristics are to fetch water by the barrier that is arranged on the check dam flood spillway, and barrier formula mountain stream water intake engineering and check dam are united two into one, and make engineering have both sediment trapping and water intaking function simultaneously.When current are flowed through the flood spillway of check dam, will (V be a flow velocity with V=2gh, h is the height of water level of check dam, g is an acceleration of gravity) flow velocity flow through barrier, when the water yield hour, current can all flow to barrier, when the water yield is big, the part current flow to barrier, and current enter fetches water after barrier compiles by water-drawing corridor later on.According to different needs, aspect such as the water yield that obtains can be used for supplying water, agricultural.
Effect at dry season this project performance barrier formula mountain stream water intake engineering is fetched water from the river, and the flood season it except fetching water, the function filed of also the bringing into play check dam simultaneously sand that intercepts water.Water intaking during flood is that flood is shunted, and the energy of flood has been cut down in shunting, and the bed load sandstone that are beneficial in the flood are piled up in the downstream, alleviates the harmful purpose of water sand calamity that flood brings to the downstream thereby reach.Can satisfy the water needs of dry season by retaining after the water intaking, improve the utilization rate of water resource.Sand-trap water-take dam is built up stepped, the ratio in river is fallen slow down, reach the purpose that alleviates flood damage, can also carry out multistage water intaking by stair-stepping sand-trap water-take dam simultaneously and obtain the more water yield.
Water intaking position among the present invention comprises barrier and water-drawing corridor two parts, flood season is owing to sand content in the current is higher, when current are flowed through barrier, barrier washed away cause wearing and tearing, foreign material such as the rubble of carrying secretly in the current, dry branches and fallen leaves can cause barrier to stop up, and the obstruction after the flood on timely maintenance, the removing barrier is necessary.
Description of drawings
Fig. 1 is a front schematic view of the present invention
Fig. 2 is a cross section structure schematic diagram of the present invention
Among the figure: check dam 1, water-drawing corridor 2, water-drawing corridor water inlet 2-1, flood spillway overflow weir 3, overflow weir surface 3-1, barrier 4, overflow weir jetty 3-2.
The specific embodiment
Shown in Fig. 1-2: check dam 1, dam body be provided with water-drawing corridor because dam body is middle, so the surface on dam are provided with thickening layer than higher.The general flood spillway that on check dam 1, is provided with a similar breach, the overflow weir that constitutes flood spillway also is the part of check dam, water-drawing corridor is drawn (part that overflow weir itself is exactly dam body) from overflow weir and check dam inside, and the water inlet of water-drawing corridor is located at the rear portion that constitutes flood spillway overflow weir surface, the surface is provided with barrier, barrier is to cover obliquely on irrigating gate, tilts downwards.The angle of itself and level is the 20-65 degree, and especially the 35-55 degree has marked 50 degree among the figure.Barrier covers between overflow weir surface and overflow weir jetty, the overflow weir jetty is at the rear portion of overflow weir, the size of the water-drawing corridor of barrier bottom has ask for something, its width generally be dam width 1/3 in, the ratio that the width of water-drawing corridor and overflow weir jetty 3-2 are formed with height is: 1.1-1.5: 1.
The surface of overflow weir jetty is the slope, with the angle of level be the 10-30 degree, the edge of overflow weir jetty is a high end on slope, the end that the overflow weir jetty contacts with barrier 4 is the low end in slope, forms the intake that tilts to water-drawing corridor.
Shown in Figure 2, water-drawing corridor is located at the centre of dam body, can draw current along dam body as shown in Figure 1, also can have breach from the dam body back and draw current.The flood spillway of check dam has the function of check dam, again can be by the water-drawing corridor diversion in the overflow weir.
Claims (5)
1, sand-trap water-take dam, check dam is provided with the flood spillway overflow weir, is provided with the overflow weir jetty at the rear portion of overflow weir, it is characterized in that being provided with water-drawing corridor at check dam and flood spillway overflow weir inside, the water inlet of water-drawing corridor is located at the rear portion on flood spillway overflow weir surface, and the surface is provided with barrier.
2, by the described sand-trap water-take dam of claim 1, it is characterized in that flood spillway overflow weir surface is provided with barrier, covering on irrigating gate of inclination tilted downwards, and the angle of barrier and level is the 20-65 degree.
3, by the described sand-trap water-take dam of claim 1, the angle that it is characterized in that barrier and level is the 35-55 degree.
4, by the described sand-trap water-take dam of claim 1, the size that it is characterized in that the water-drawing corridor of barrier bottom is: the width of water-drawing corridor is not more than 1/3 of dam width, and the ratio of the height that the width of water-drawing corridor and overflow weir jetty (3-2) form is: 1.1-1.5: 1.
5, by the described sand-trap water-take dam of claim 1, the surface that it is characterized in that the overflow weir jetty is the slope, with the angle of level be the 10-30 degree, the edge of overflow weir jetty is a high end on slope, the end that the overflow weir jetty contacts with barrier (4) is the low end in slope, forms the intake that tilts to water-drawing corridor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100945844A CN1320213C (en) | 2005-09-28 | 2005-09-28 | Sand-trap water-take dam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100945844A CN1320213C (en) | 2005-09-28 | 2005-09-28 | Sand-trap water-take dam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1743559A CN1743559A (en) | 2006-03-08 |
| CN1320213C true CN1320213C (en) | 2007-06-06 |
Family
ID=36139068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100945844A Expired - Fee Related CN1320213C (en) | 2005-09-28 | 2005-09-28 | Sand-trap water-take dam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1320213C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603300B (en) * | 2009-07-24 | 2011-06-08 | 湖北兴发化工集团股份有限公司 | Hydraulic trash remover for bottom grid diversion dam of power station |
| CN103993585B (en) * | 2014-05-29 | 2016-01-20 | 广东省水利水电科学研究院 | Little miniature artesian diversion engineering block dirt and floating row system |
| CN110528475A (en) * | 2019-08-10 | 2019-12-03 | 中国水利水电第七工程局有限公司 | A kind of hydraulic engineering water intake system |
| CN113006196B (en) * | 2021-03-04 | 2021-09-14 | 甘肃省水利水电勘测设计研究院有限责任公司 | Small-flow double water taking system for stream ditch in alpine region |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03287908A (en) * | 1990-04-05 | 1991-12-18 | Fujita Corp | Structure of debris barrier |
| CN1065305A (en) * | 1991-03-25 | 1992-10-14 | 黄国宏 | The partition method of silt dirt in water conservancy, the hydroelectric project |
-
2005
- 2005-09-28 CN CNB2005100945844A patent/CN1320213C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03287908A (en) * | 1990-04-05 | 1991-12-18 | Fujita Corp | Structure of debris barrier |
| CN1065305A (en) * | 1991-03-25 | 1992-10-14 | 黄国宏 | The partition method of silt dirt in water conservancy, the hydroelectric project |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1743559A (en) | 2006-03-08 |
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