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Canal-head manual-diversion curved conduit

A curved and artificial technology, applied in artificial waterways, water conservancy projects, special data processing applications, etc., can solve problems such as high cost, affecting the normal operation of the water diversion head, scouring and silting deformation of the diversion bend, etc., to avoid erosion or silting Deformation, ensuring normal water diversion, and the effect of geometric section shape stability

Inactive Publication Date: 2012-06-27
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sometimes, due to the unreasonable selection of the size of the diversion bend, serious erosion and silting deformation in the diversion bend will affect the normal operation of the diversion head, and a lot of manpower and material resources have to be rebuilt

Method used

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  • Canal-head manual-diversion curved conduit
  • Canal-head manual-diversion curved conduit
  • Canal-head manual-diversion curved conduit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0067] It is known that the design flow Q of an artificial diversion bend is 300m 3 / s, the average particle size of suspended sand d m =0.045m, roughness n=0.035, trapezoidal cross section slope coefficient m=1.5. The artificial water diversion bend is designed by applying the above-mentioned optimal design method.

[0068] untie:

[0069] Firstly, the design flow Q of the bend and the average particle size of suspended sand d m , roughness n, slope coefficient m and other known values ​​are substituted into the mathematical model for the optimal design of the artificial water diversion curve applying for this patent, and the bottom width b, water depth h, and radius of curvature R of the curve center of the trapezoidal section artificial water diversion curve are obtained c , the length of the center of the curve L c .

[0070] Then, substituting b, h, design flow Q of the bend, roughness n, and slope coefficient m into the following Manning formula to obtain the longit...

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Abstract

The invention discloses a canal-head manual-diversion curved conduit. The curved conduit has a trapezoidal cross section and comprises structural parameters, such as a cross section bottom width b, an average water depth h, a curved conduit center curvature radius Rc and a curved conduit center length Lc which are calculated by lower right mathematic formulas. The invention can generate stable and violent cross current, avoid generating great washing or silting deformation in the operation process, keep the relative stability of the geometric cross section of the diversion curved conduit and ensure the normal diversion of an intake sluice.

Description

technical field [0001] The invention relates to a low-head water diversion canal head project, in particular to an artificial water diversion bend at a canal head. Background technique [0002] The function of the artificial water diversion bend in the head of the diversion channel is to form a horizontal circulation, so that the surface clear water flows to the concave bank and enters the channel through the intake sluice; figure 1 ). The stronger and more stable the circulation in the diversion bend, the better the effect of diversion and sediment removal. Therefore, the design of the diversion bend is related to the success or failure of the entire diversion head. At present, the design of artificial diversion bends in the diversion head is mainly based on experience or model tests, without the guidance of theoretical methods. Therefore, there is a lot of randomness and blindness in the design. Sometimes, due to the unreasonable selection of the size of the diversion ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B5/00G06F17/50
Inventor 徐国宾刘昉
Owner TIANJIN UNIV