CN110541408A - wavy step type river channel overflow weir - Google Patents
wavy step type river channel overflow weir Download PDFInfo
- Publication number
- CN110541408A CN110541408A CN201910775935.XA CN201910775935A CN110541408A CN 110541408 A CN110541408 A CN 110541408A CN 201910775935 A CN201910775935 A CN 201910775935A CN 110541408 A CN110541408 A CN 110541408A
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- CN
- China
- Prior art keywords
- weir
- river channel
- wave
- weir body
- overflow weir
- 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.)
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Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Barrages (AREA)
Abstract
The invention discloses a wave step type river channel overflow weir, wherein a weir body is arranged along the cross section of a river channel, the upstream surface of the weir body is vertical, the other surface of the weir body is step-shaped and downwards along the water flow direction, the step height and the step length of each step are the same, and each step is wave-shaped which is composed of a plurality of sections of circular arcs and is symmetrically distributed by taking the center line of the river channel as a symmetry axis. The invention has the beneficial effects that the invention is applied to the urban river channel, can quickly discharge flood, meets the flood discharge requirement of the urban river channel and can increase the landscape effect of the urban river channel.
Description
Technical Field
the invention belongs to the technical field of urban riverways, and relates to a wavy step type riverway overflow weir.
background
On the basis of normal flood discharge, the urban river channel also bears more functions of ecology, environment and the like, and is also a water body which is in contact with more residents, so that the design needs to consider the attractive effect in addition to the flood control capacity. In hydraulic engineering, a certain "dam" and "drainage" of water flow is often performed by a weir or dam. The development process of weirs is very long, and the common categories include thin-wall weirs, practical weirs and wide-top weirs. With the theoretical innovation and the technical development, forms of broken line weirs, labyrinth weirs, multi-arch dams and the like appear in sequence. Different landscape effects can be caused by changing the shape of the overflowing section, meanwhile, the overflowing capacity can be effectively improved by increasing the length of the overflowing front edge, and different weirs which meet the flood running capacity and have good landscape effects can be designed based on the two starting points. In many forms of weir, the combination of the wave form itself and the application of the stepped weir in spillways, forms the "wave-shaped stepped river weir structure" referred to in this invention.
Disclosure of Invention
The invention aims to provide a wavy step type river channel overflow weir, which can be applied to an urban river channel, can quickly discharge flood, meets the flood discharge requirement of the urban river channel and can improve the landscape effect of the urban river channel.
The technical scheme adopted by the invention is that the weir body is arranged along the cross section of the river channel, the weir body is vertical to the upstream surface, the other surface of the weir body is step-shaped and step-shaped downwards along the water flow direction, the step height and the length of each step are the same, and each step is a wave which is composed of a plurality of sections of circular arcs and is symmetrically distributed by taking the center line of the river channel as a symmetry axis.
Drawings
FIG. 1 is a double wave weir;
FIG. 2 is a three wave weir;
FIG. 3 is a four-wave weir;
FIG. 4 is a weir cross-section;
FIG. 5 is a circular arc plan configuration of a weir (2 waves for example);
fig. 6 is a downstream elevation of the weir (2-wave for example).
In the figure, 1 is a weir body, 2 is a water-facing surface, 3 is a step, and 4 is a circular arc.
Detailed Description
the present invention will be described in detail with reference to the following embodiments.
The wave step type river channel overflow weir of the invention is shown in figures 1 to 4, and comprises a weir body 1, wherein the weir body 1 is arranged along the cross section of a river channel, the weir body 1 is vertical to a water surface 2, the other surface of the weir body is step-shaped and downward step by step along the water flow direction, the step height and the step length of each step 3 are the same, and each step 3 is wave-shaped which is composed of a plurality of sections of circular arcs 4 and is symmetrically distributed by taking the center line of the river channel as a symmetry axis. Fig. 1 is a double wave weir, fig. 2 is a three wave weir, fig. 3 is a four wave weir, fig. 4 is a cross section of the weir, fig. 5 is a circular arc plane structure (taking 2 waves as an example) of the weir, and fig. 6 is a downstream elevation view (taking 2 waves as an example) of the weir. In the case of figures 5 and 6 of the drawings,
w is the width of the river channel;
2 a-weir length;
b is the distance from the center of the weir to the center;
c-Weir height;
r-weir arc radius;
P-weir height;
r＝(a+b)；
and a is w/n (n is the weir wave number).
when the river water flow is less, the water storage is realized by the upright upstream face 2, the overflow is started when the water level of the river rises and exceeds the top of the weir body 1, the wave-shaped water flow is displayed on the plane due to the wave-shaped design of the other face, and the water flow falls step by step under the action of the step 3, so that the effect that the water flows in a tick manner when the water is less and the water flows in a layer by layer when the water is more is formed; and the existence of circular arc 4 makes overflow weir length increase, compares the discharge capacity with sharp weir and increases to make the discharge capacity in river course obtain guaranteeing, reach and to can impound (the weir upper reaches forms certain surface of water), and the view is effectual during the overflow, can satisfy the purpose that the river course flood control required again.
the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention in any way, and all simple modifications, equivalent variations and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the present invention.
Claims (1)
1. the utility model provides a wavy step river course overflow weir which characterized in that: including the weir body, the weir body is arranged along the river course cross section, and the weir body upstream face is perpendicular, and the another side is the step form downwards step by step along the rivers direction, and the height of marking time, the length of each step are the same, and each step is the wave that comprises a plurality of sections circular arcs, uses the river course central line to be symmetric distribution as the symmetry axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910775935.XA CN110541408A (en) | 2019-08-22 | 2019-08-22 | wavy step type river channel overflow weir |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910775935.XA CN110541408A (en) | 2019-08-22 | 2019-08-22 | wavy step type river channel overflow weir |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110541408A true CN110541408A (en) | 2019-12-06 |
Family
ID=68711749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910775935.XA Pending CN110541408A (en) | 2019-08-22 | 2019-08-22 | wavy step type river channel overflow weir |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110541408A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113684791A (en) * | 2021-08-06 | 2021-11-23 | 武汉大学 | Arc-shaped waterscape dam based on vortex floating guide and design method thereof |
-
2019
- 2019-08-22 CN CN201910775935.XA patent/CN110541408A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113684791A (en) * | 2021-08-06 | 2021-11-23 | 武汉大学 | Arc-shaped waterscape dam based on vortex floating guide and design method thereof |
| CN113684791B (en) * | 2021-08-06 | 2022-10-04 | 武汉大学 | Arc-shaped waterscape dam based on vortex floating guide and design method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |