三峡工程三期提前截流水力学研究  

Experimental Study on Third-Phase River Closure in Advance at TGP

作　　者：郭红民 董红燕 陈辉 GUO Hong-ming & DONG Hong-yan （Yichang Institute; Yangtze River Scientific Research Institute; Yichang 443002）;

机构地区：长江科学院宜昌科学研究所

出　　处：《中国三峡建设》2001年第9期-,共5页China Three Gorges Construction

摘　　要：按照初步设计施工总进度安排 ,三峡工程三期截流于 2 0 0 2年 12月上旬实施 ,截流流量按当旬 5 %频率最大日平均流量 90 10m3 s设计 ,采用上游单戗单向进占立堵截流方案。鉴于后续三期碾压混凝土围堰施工工程量大、强度高、工期紧 ,为保证其按时竣工 ,同时实现三峡工程开始挡水发电 ,必须研究三期提前截流方案。In terms of the overall construction schedule in the preliminary design ,the third-phase river closure (at the open diversion channel) should be achieved in the first ten-day period of Dec. of 2002. An end-dump method will be employed at the upstream cofferdam with a final gap drop of 3.25m and the max. depth-mean velocity of 6.85 m/s in the gap when the maximum design daily mean discharge of 9 010m 3/s is expected during the first ten-day period.Considering after the river closure the construction of the ...

关 键 词：三峡工程 三期截流 拦石坎 度汛 通航 

分 类 号：TV551.2[水利工程—水利水电工程]