某水电站排沙廊道设计  

Design of Flush Gallery for a Hydropower Station

作　　者：杨嵘 沈明 YANG Rong;SHEN Ming(Power China Huadong Engineering Corporation Limited,Hangzhou 311122,China)

机构地区：[1]中国电建集团华东勘测设计研究院有限公司,浙江杭州311122

出　　处：《云南水力发电》2021年第1期98-103,共6页Yunnan Water Power

摘　　要：某水电站河床狭窄,来流含沙量较大,选择冲沙效果好、布置合理的排沙建筑物非常重要。首先结合枢纽建筑物和整体水工模型试验[1]冲沙效果,优选在进水口下方布置排沙廊道和左侧布置冲沙底孔相结合的排沙建筑物,然后采用水力学数值计算确定廊道过流断面和岔管型式、采用大比尺水工模型试验[2]选择水力学条件较好正方形交叉断面的岔管、掺气效果较好的差动式掺气坎,并调整廊道底坡。The riverbed of a hydropower station is narrow,and the sediment concentration of the incoming flow is large.It is very important to choose a sediment discharge building with good sediment discharge effect and reasonable layout.First of all,according to the flushing effect of the complex structure and the whole hydraulic model test,the sediment discharge gallery under the inlet and the sediment discharge bottom outlet on the left are optimized.Then,the hydraulic flow calculation is used to determine flow cross-section and bifurcated pipe type of the gallery,the hydraulic model test with large scale is used to select the bifurcated pipe of square cross-section with better hydraulic condition,the differential aeration sill with better aeration effect and adjust the gallery bottom slope.

关 键 词：冲沙建筑物 排沙廊道 冲沙底孔 掺气坎 差动式 

分 类 号：TV73[水利工程—水利水电工程] TV698