摘要
龙滩水电站施工导流具有导流洞规模大、运行条件复杂、RCC围堰高等特点。其导流洞为国内目前已建和在建工程中断面最大的有压导流洞,也是封堵期水头最高的导流洞,其RCC围堰最大高度达82 7m。龙滩水电站采用隧洞导流方式,分初期导流、施工期坝体临时拦洪和初期发电3个阶段。截流时,导流设计洪水标准为20年一遇洪水,围堰挡水标准为10年一遇洪水。导流洞开挖分三层施工,每层高约8～10m。左右岸导流洞均已通过验收,具备过流条件,河床截流可按期进行。
The construction diversion of Longtan Hydropower Station is large in diversion tunnel scale, complicated in operation conditions, and high in cofferdam Its diversion tunnel is the largest section pressured tunnel in the built and under build projects at home at present, with the highest water head during its blockage period The maximum height of the cofferdam is 82 7 m The tunnel diversion is divided into three periods of first stage diversion, provisional flood retaining during construction period and initial power generation When the river is closed, the diversion design flood standard is 20 year flood and the cofferdam water retaining standard is 10 year flood The diversion tunnel is excavated by three layers with the height of about 8～10 meters each The right and left diversion tunnels were checked and accepted The river closure can be carried out on schedule
出处
《水力发电》
北大核心
2003年第10期51-53,共3页
Water Power
关键词
导流设计
隧洞导流
围堰
龙滩水电站
diversion design, tunnel diversion, cofferdam, Longtan Hydropower Station
