CN204825802U - Compound line type overflow weir - Google Patents
Compound line type overflow weir Download PDFInfo
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- CN204825802U CN204825802U CN201520412984.4U CN201520412984U CN204825802U CN 204825802 U CN204825802 U CN 204825802U CN 201520412984 U CN201520412984 U CN 201520412984U CN 204825802 U CN204825802 U CN 204825802U
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- overflow weir
- curve segment
- straightway
- curved section
- dyke
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Abstract
The utility model relates to a hydraulic engineering technical field provides a compound line type overflow weir, including straightway, first curve segment, second curve segment with link up the section, straightway perpendicular to water flow direction, first curve segment, second curve segment protruding to one side all with the rivers contact, first curve segment one end and the smooth connection of scouring sluice lateral wall, the other end is connected with straightway one end, second curve segment and first curve segment symmetrical arrangement, second curve segment one end is connected with the straightway, the other end passes through the linking and section is connected with the head works dyke, the beneficial effects of the utility model are that: the length that has prolonged the overflow weir in limited width river course reduces overflow weir weir crest and dyke design altitude, reduces head works dyke and floodgate pivot cost, the overflow weir links up more smooth -going with the sediment outflow floodgate, and the sand washing width before sediment outflow floodgate and the intake work is narrower, more is favorable to the sediment outflow that sluices, rivers part kinetic energy can be subductd to the trilateral characteristics of intaking of overflow weir, is favorable to low reaches scour protection energy dissipation, reduces apron engineering cost.
Description
Technical field
The utility model relates to hydraulic engineering technical field, particularly a kind of composite line type overflow weir.
Background technology
As shown in Figure 1 and Figure 2, head-work generally comprises intake gate 2, scouring sluice 4 and overflow weir, and overflow weir is one of key construction had in dam head-work, and its effect mainly raises upper pond level, so that artesian diversion is irrigated or generating, and can let out the unnecessary water in river course and Flood by wash with watercolours.
The overflow weir that current China uses mostly is linear pattern overflow weir 32 or arch overflow weir 31, weir is long shorter, and under the prerequisite of satisfied excretion flow and discharge per unit width, weir head is higher, certainly will to increase head works dyke and lock hinge design altitude, thus cause construction costs to improve.
China has a large amount of needs to build in narrow river course, and have the head-work of diversion sediment outflow requirement, how on finite width river course, to extend overflow weir weir long, reduce overflow weir head on weirs, reduce head works dyke design elevation simultaneously, and make overflow weir be connected more smooth-going with sediment outflow lock, be conducive to sediment outflow, this problem is never effectively solved.
Utility model content
The purpose of this utility model is: for the problems referred to above, provides a kind of composite line type overflow weir.
A kind of composite line type overflow weir of the utility model, comprise straightway, first curved section, second curved section and joining section, described straightway is perpendicular to water (flow) direction, described first curved section and described second curved section convex to side all and water stream contacts, described first curved section one end is connected with scouring sluice smooth-sided, the other end is connected with described straightway one end, described smooth connection is that described first curved section is connected with tangential manner in joining with described scouring sluice sidewall, described second curved section and described first curved section are arranged symmetrically with, described second curved section one end is connected with described straightway one end, the other end is connected with head works dyke by joining section.
Further, the length of described straightway is the 1/3-1/4 of downstream apron width.
The beneficial effects of the utility model are: have following advantage compared with traditional " yi word pattern " straight line weir, ogive curve weir:
1, straight line, the curve combination form of this overflow weir, extend the length of overflow weir in the river course of finite width, reduces head on weirs and dyke design elevation, reduces head works dyke and lock hinge cost;
2, the sand washing width before sediment outflow lock and intake gate and first two weir-type are than narrower, and overflow weir is connected more smooth-going with sediment outflow lock, is more conducive to sluicing sediment outflow;
3, the feature of overflow weir three water inlet can make just to flow and three strands of current of effluent overflow in composite line type bypass channel simultaneously, and current collide, and can clear up part kinetic energy, are conducive to downstream erosion control energy dissipating, shorten downstream apron length, reduce apron construction costs.
Accompanying drawing explanation
Figure 1 shows that existing arch form overflow weir head works structural representation.
Figure 2 shows that existing linear pattern overflow weir head works structural representation.
Figure 3 shows that the utility model composite line type overflow weir structure schematic diagram.
In figure: 1-head works dyke, 2-intake gate, 31-arch form overflow weir, 32-linear pattern overflow weir, 4-scouring sluice, 5-flowing water, 6-straightway, 7-first curved section, 8-second curved section, 9-joining section.
Detailed description of the invention
Hereafter will describe the utility model specific embodiment in detail in conjunction with concrete accompanying drawing.It should be noted that the combination of technical characteristic or the technical characteristic described in following embodiment should not be considered to isolated, they can mutually be combined thus be reached better technique effect.In the accompanying drawing of following embodiment, the identical label that each accompanying drawing occurs represents identical feature or parts, can be applicable in different embodiment.
As shown in Figure 3, a kind of composite line type overflow weir of the utility model embodiment, comprise straightway 6, first curved section 7, second curved section 8 and joining section 9, described straightway 6 is perpendicular to current 5 direction, described first curved section 7 all contacts with current 5 to side with described second curved section 8 is convex, described first curved section 7 one end is connected with scouring sluice 4 smooth-sided, the other end is connected with described straightway 6 one end, described smooth connection is that described first curved section 7 is connected with tangential manner in joining with described scouring sluice 4 sidewall, described second curved section 8 is arranged symmetrically with described first curved section 7, described second curved section 8 one end is connected with described straightway 6 one end, the other end is connected with head works dyke 1 by joining section 9.
The length of described straightway 6 is the 1/3-1/4 of downstream apron width.
Described first curved section 7 is connected with tangential manner in joining with described scouring sluice 4 sidewall, and overflow weir is connected more smooth-going with described sediment outflow lock, is more conducive to sluicing sediment outflow.
In engineering, described composite line type overflow weir and traditional linear pattern overflow weir 32, arch form overflow weir 31 material, cross-sectional configuration are all identical, can according to " Design of The Hydraulic Structure specification ", in conjunction with the design of excretion water yield size.
Described composite line type overflow weir total length is determined according to head on weirs, intake gate 2 design water level, value such as comprehensive Design such as overflow weir the excretion water yield and discharge per unit width etc.
The beneficial effects of the utility model are: have following advantage compared with traditional " yi word pattern " straight line weir, ogive curve weir:
1, straight line, the curve combination form of this overflow weir, extend the length of overflow weir in the river course of finite width, reduces head on weirs and dyke design elevation, reduces head works dyke and lock hinge cost
2, the sand washing width before sediment outflow lock and intake gate and first two weir-type are than narrower, and overflow weir is connected more smooth-going with sediment outflow lock, is more conducive to sluicing sediment outflow;
3, the feature of overflow weir three water inlet can make just to flow and three strands of current of effluent overflow in composite line type bypass channel simultaneously, and current collide, and can clear up part kinetic energy, are conducive to downstream erosion control energy dissipating, shorten downstream apron length, reduce apron construction costs.
Although given an embodiment of the present utility model, it will be understood by those of skill in the art that when not departing from the utility model spirit herein, can change embodiment herein.Above-described embodiment is exemplary, should using embodiment herein as the restriction of the utility model interest field.
Claims (2)
1. a composite line type overflow weir, it is characterized in that, comprise straightway, first curved section, second curved section and joining section, described straightway is perpendicular to water (flow) direction, described first curved section and described second curved section convex to side all and water stream contacts, described first curved section one end is connected with scouring sluice smooth-sided, the other end is connected with described straightway one end, described smooth connection is that described first curved section is connected with tangential manner in joining with described scouring sluice sidewall, described second curved section and described first curved section are arranged symmetrically with, described second curved section one end is connected with described straightway one end, the other end is connected with head works dyke by joining section.
2. a kind of composite line type overflow weir as claimed in claim 1, is characterized in that, the length of described straightway is the 1/3-1/4 of downstream apron width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520412984.4U CN204825802U (en) | 2015-06-15 | 2015-06-15 | Compound line type overflow weir |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520412984.4U CN204825802U (en) | 2015-06-15 | 2015-06-15 | Compound line type overflow weir |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204825802U true CN204825802U (en) | 2015-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520412984.4U Expired - Fee Related CN204825802U (en) | 2015-06-15 | 2015-06-15 | Compound line type overflow weir |
Country Status (1)
| Country | Link |
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| CN (1) | CN204825802U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105672209A (en) * | 2016-04-01 | 2016-06-15 | 刘有录 | Agriculture range practical weir capable of being stacked |
| CN109260776A (en) * | 2018-11-19 | 2019-01-25 | 石河子大学 | A kind of settling pit |
| CN110284467A (en) * | 2019-06-18 | 2019-09-27 | 中国电建集团北京勘测设计研究院有限公司 | A kind of asymmetric open spillway |
| CN111910587A (en) * | 2020-08-19 | 2020-11-10 | 河南省水利第二工程局 | Special-shaped overflow weir |
-
2015
- 2015-06-15 CN CN201520412984.4U patent/CN204825802U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105672209A (en) * | 2016-04-01 | 2016-06-15 | 刘有录 | Agriculture range practical weir capable of being stacked |
| CN109260776A (en) * | 2018-11-19 | 2019-01-25 | 石河子大学 | A kind of settling pit |
| CN110284467A (en) * | 2019-06-18 | 2019-09-27 | 中国电建集团北京勘测设计研究院有限公司 | A kind of asymmetric open spillway |
| CN111910587A (en) * | 2020-08-19 | 2020-11-10 | 河南省水利第二工程局 | Special-shaped overflow weir |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 Termination date: 20170615 |