摘要
Abstract
During river closure, the flow boundary of closure gap changes with the fold of closure dike, which brings a great difficulty to hydraulic calculation of construction design. In this paper the research area is a 750m long river section from the diversion tunnel entrance to the Pubugou Hydropower Station dam axis and the research tool is a two-dimensional flow mathematic model. When the closure design discharge is 1 000m3 /s, different hydraulic parameters with various closure gap widths are obtained. These parameters include average cross-sectional flow velocity, average cross-sectional water level, average vertical flow velocity, and the planar distribution of water level and depth, etc. The consequences of the physical model test results show that the average flow velocity in the closure gap, the water fall upstream and downstream the closure gap, the water level and depth near the closure gap are close with the experimental results.关键词
水流数学模型/截流/龙口/瀑布沟水电站Key words
flow mathematical model/ river closure/ closure gap/ Pubugou Hydropower Station分类
建筑与水利
