Experimental Study on Optimal Layout of Grid Desilting Gallery

Based on the desilting research of one scheduling project in the southwest of China, the method of setting grid desilting gallery before the desilting tunnel is put forward to expand the scope of the scouring funnel before the dam and solve the problem of sediment deposition at the power station wat...

Full description

Saved in:
Bibliographic Details
Published in:Transactions of Tianjin University 2009-04, Vol.15 (2), p.130-134
Main Author: 张耀哲 王敬昌 苌志超 张毅
Format: Article
Language:English
Subjects:
Engineering
Humanities and Social Sciences
Mechanical Engineering
multidisciplinary
Science
中国西南
优化布置
冲刷漏斗
大坝建设
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Based on the desilting research of one scheduling project in the southwest of China, the method of setting grid desilting gallery before the desilting tunnel is put forward to expand the scope of the scouring funnel before the dam and solve the problem of sediment deposition at the power station water intake. The experimental results show that, in the design of a grid desilting gallery, the width of the grid gallery should not be smaller than that of the desiring bottom intake, the size of the grid orifice should be in the range of 1.5 m--2.0 m along the flow direction, and the grid spacing should be 3--5 times the size of the grid orifice. The discharging ability of the desilting bottom intake will decrease after the grid desilting gallery is added. The average of the decrease rates is about 5%-10%. The scouring funnel draws in the longitudinal direction before the dam obviously after the construction of the grid desilting gallery.
ISSN:1006-4982
1995-8196
DOI:10.1007/s12209-009-0023-4