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Roughening and energy dissipating method for flood discharging groove

An energy dissipation and flood discharge technology, applied in water conservancy projects, marine engineering, coastline protection, etc., to achieve the effect of wide application, environmental protection and shortening construction time

Inactive Publication Date: 2009-02-18
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for roughening and dissipating energy of the spillway aiming at the bottleneck problem of the utilization of the spillway at present

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Because the spillway of this embodiment is in the plain river course, the artificial roughening of the bottom of the spillway near the downstream two-thirds is to directly use cement to make protrusions of different shapes on the bottom of the groove as roughening objects, according to the The closer to the downstream channel, the greater the roughness requires construction.

Embodiment 2

[0016] Because the spillway of this embodiment is also in the plain river course, the artificial roughening of the bottom of the spillway in the downstream two-thirds part uses prefabricated cement blocks of different shapes made in advance or on the spot as roughening objects, according to the closer The downstream channel, whose roughness is greater, requires construction.

Embodiment 3

[0018] Because the spillway of this embodiment is located in a mountainous river, the bottom of the spillway near two-thirds of the downstream is artificially roughened using pebbles in the river as roughening objects. The closer to the downstream river, the greater the roughness. Ask to build.

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PUM

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Abstract

The invention discloses a flood discharge trough roughening and energy dissipating method. The method is characterized in that the bottom of one thirds of the flood discharge trough at the upper reach is processed to be a smooth face and the bottom of the rest two thirds is roughened manually through screes or prefabricated cement blocks with various shapes or through directly fabricating or cutting lug bosses in various shapes to reach the effect of dissipating energy so as to reduce energy dissipation pressure at the lower reach of the flood discharge trough and impact to the riverway. The method is simple and easy and is widely applicable for energy dissipation in both low and medium water head hydropower stations, flood discharge troughs at the lower reaches of hydroelectric junctions and tail water hydroelectric junctions of thermal power plants. the method is particularly applicable for projects, in which the riverway at the lower reach of the flood discharge trough has multiple joints in the groundsill and is weak in scouring resistance.

Description

technical field [0001] The invention belongs to the technical field of energy dissipation methods for flood discharge channels in water conservancy projects, and in particular relates to a roughening energy dissipation method for flood discharge channels. Background technique [0002] In the design and construction of water conservancy projects, it is necessary to consider the technical measures to release the inexhaustible water flow when the flood comes, so as to ensure the safety of water conservancy buildings. Spill troughs, flood tunnels, and flood gates are the main works of hydropower station buildings, and they are also water conservancy buildings that release excess water in water conservancy projects. When building reservoirs to store water for drinking water, industrial water use, and agricultural irrigation, flood discharge troughs and flood discharge tunnels are indispensable components of reservoir buildings, especially flood discharge troughs, which are easy t...

Claims

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Application Information

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IPC IPC(8): E02B8/06
Inventor 陈其慧敖汝庄罗英
Owner SICHUAN UNIV
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