Method for designing practical weir in broadband and coarse vacuum

A design method and low-vacuum technology, applied in barrage/weirs, water conservancy projects, sea area projects, etc., can solve problems such as insufficient flood discharge capacity and unreasonable vacuum zone on the dam surface, and achieve large flood discharge capacity and good economic benefits , the effect of less engineering

Inactive Publication Date: 2006-10-04
FUJIAN PROVINCIAL INVESTIGATION DESIGN & RES INST OF WATER CONSERVANCY & HYDROPOWER
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Problems solved by technology

[0006] In order to overcome the problems of insufficient flood discharge capacity of the current practical weir and unreasonable vacuum zone on the dam surface, the present invention provides a new design method for a wide-band low-vacuum practical weir

Method used

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  • Method for designing practical weir in broadband and coarse vacuum
  • Method for designing practical weir in broadband and coarse vacuum
  • Method for designing practical weir in broadband and coarse vacuum

Examples

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Embodiment 1

[0044] Such as figure 1 The shown overflow dam crest curve (1) is designed as:

[0045] [ X 2.912 ] 2 + [ 1 - Y 1.579 ] 2 = 1

[0046] The weir surface curve downstream of the weir crest is 2 and the design is:

[0047] Y=0.0803X 1.85 ;

[0048] The weir surface curve 3 is a circular arc with a radius of 20m and a central angle of 83°; the gate pier 4 is a cuboid with a length of 30m and a thickness of 2.5m, and its two ends are columns with a radius of 1.25m; the gate 5 is an arc-shaped steel gate with a radius of 16m.

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Abstract

The present invention discloses a design method of broad base low-vacuum practial weir. Said invention includes system design mentality, weir surface curve design, flood carrying capacity calculation method, finite element stress check calculation and technical economic comparison of new weir type and WES weir. The most key of said design includes three factors of flood carrying capacity, weir surface pressure and volume of dam body, and its concrete design calculation method includes two portions of body type designand discharge coefficient definition.

Description

technical field [0001] The invention relates to a design method of a flood discharge and overflow dam, in particular to a design method of a novel wide-band low-vacuum practical weir. Background technique [0002] The practical weir is one of the most important structures in dam construction, and it has the dual functions of retaining water and releasing water. Therefore, in addition to being safe and reasonable in structure, it must also have good hydraulic characteristics. The broadband low-vacuum practical weir is a new technology for flood discharge of dams in water conservancy and hydropower projects. The content involves the design of the most important structure in dam construction, which has the dual functions of retaining water and releasing water——practical weir. [0003] For more than a century, hydraulic engineering experts from all over the world have proposed a number of overflow weir shapes, among which the most representative ones are the WES weir proposed b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B7/00
Inventor 杨首龙林琳叶丽清谢德瑞翁玉华周顺田
Owner FUJIAN PROVINCIAL INVESTIGATION DESIGN & RES INST OF WATER CONSERVANCY & HYDROPOWER
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