黄河上游某水电站上游围堰设计  

Design of Upstream Cofferdam of One Hydropower Project at Upstream Yellow River

作　　者：段军邦 杜永[1] 孙斌[2] 贺智安 

机构地区：[1]青海黄河上游水电开发有限责任公司工程建设分公司,西宁810000 [2]中国电建集团西北勘测设计研究院有限公司,西安710065

出　　处：《西北水电》2016年第4期50-53,共4页Northwest Hydropower

摘　　要：针对黄河上游某水电站上游围堰位置边坡高陡、河谷狭窄的特点,考虑截流施工道路的布置,将截流戗堤布置在围堰上游端,并对截流抛投物冲距进行验算。根据该地区的气候特点、进度安排及防渗土料储量丰富,上游围堰采用混凝土防渗墙+黏土的防渗型式,取得良好效果,为高寒地区围堰防渗提供了经济安全可靠的技术方案和实践经验。As the high steep slope and the narrow river valley where the upstream cofferdam is built as well as considering the arrangement of the construction roads for the river closure operation,the river closure dike is arranged at the upstream end of the cofferdam,and the washing distance of dumped materials for the river closure is calculated as well. Based on the regional climate features,construction schedule and the rich impervious materials,the upstream cofferdam applies both concrete cutoff wall and clay for impermeability. This impervious mode achieves well in effect providing the cofferdam impermeability in high and cold region with economic,safety and reliable technical scheme and practice experience.

关 键 词：截流戗堤 环线道路 预留冲距 黏土防渗 渗流稳定 

分 类 号：TV551.3[水利工程—水利水电工程]