CN204825802U - Compound line type overflow weir - Google Patents

Compound line type overflow weir Download PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
overflow weir
curve segment
straightway
curved section
dyke
Prior art date
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.)
Expired - Fee Related
Application number
CN201520412984.4U
Other languages
Chinese (zh)
Inventor
李玉芳
Original Assignee
李玉芳
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 李玉芳 filed Critical 李玉芳
Priority to CN201520412984.4U priority Critical patent/CN204825802U/en
Application granted granted Critical
Publication of CN204825802U publication Critical patent/CN204825802U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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

A kind of composite line type overflow weir
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.
CN201520412984.4U 2015-06-15 2015-06-15 Compound line type overflow weir Expired - Fee Related CN204825802U (en)

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

Family

ID=54683418

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
CN (1) CN204825802U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
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
CN111910587A (en) * 2020-08-19 2020-11-10 河南省水利第二工程局 Special-shaped overflow weir

Cited By (2)

* Cited by examiner, † Cited by third party
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
CN111910587A (en) * 2020-08-19 2020-11-10 河南省水利第二工程局 Special-shaped overflow weir

Similar Documents

Publication Publication Date Title
CN103410130B (en) Multi-purpose tunnel arrangement structure
CN210002360U (en) kinds of mountain gorge damming flood discharge structure
CN103882838A (en) Sediment releasing method for water intake of low-head river channel pivotal power station
CN101182707A (en) Flood discharging and energy dissipating device
CN204825802U (en) Compound line type overflow weir
CN201943053U (en) Flow-guiding and flood-discharging hole structure
CN202543870U (en) Novel energy dissipation structure of water gate for narrow river valleys and sediment-laden rivers
CN103882839A (en) Sediment releasing system for water intake of low-head river channel pivotal power station
CN203821344U (en) Forward water inlet and sand sluicing flush gallery structure of hydropower station
CN112281770B (en) Flood discharge structure adopting bottom hole and surface hole combined flood discharge and energy dissipation
CN101538842B (en) Heterotype sudden enlargement and sudden drop aerator
CN205035778U (en) Flip trajectory bucket worker
CN206428676U (en) Spillway inlet channel guiding device
CN202440787U (en) Riverway diversion device
CN106013009A (en) Multi-reverse-slope type stilling pool
CN202626933U (en) Curve type water-binding and sand-dividing guide wall
CN204849678U (en) Novel butyl dam structure
CN204753541U (en) A compound lock chamber structure that is used for narrow intake of mountain area water electrical engineering
CN206887877U (en) A kind of artificial reservior structure that can effectively remove mud
CN204703141U (en) Contraction type import flush gallery
CN202247817U (en) Efficient underflow-type energy dissipating facility
CN203821345U (en) Three-side inflowing flush gallery structure
CN204174588U (en) For the end bank structure of absorption basin
CN203821325U (en) Closure building on open and deep soft foundation river
CN203977376U (en) Contraction type transverse joint import flush gallery

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