乌金峡水电站下游围堰防渗优化设计  

Optimal design of seepage control at the downstream cofferdam of Wujinxia Hydropower station

作　　者：王凤安[1] 罗林[1] 刘周岐[1] 

机构地区：[1]中国水电顾问集团西北勘测设计研究院,西安710065

出　　处：《西北水电》2008年第4期30-33,共4页Northwest Hydropower

摘　　要：黄河乌金峡水电站为河床式电站,下游围堰在实际施工时揭露出的最大覆盖层厚度近43m,加上防渗施工平台的高度,防渗墙最大防渗高度达到58m。原设计的高喷灌浆防渗施工困难,经研究,采用河床两侧高喷灌浆防渗加中部YKC防渗墙的组合形式,从而使围堰施工工期得到保证,首台机组也能按期发电。Wujinxia hydropower station on the Yellow River is a station in river channel. The maximum thickness of overburden exposed during construction of the downstream cofferdam is nearly 43 m, and plus the height of seepage control construction platform, the maximum height of the cut -off wall reaches 58 m. The originally-designed jet grouting for seepage control is difficult to perform. By provision of get grouting on both sides of the river channel and a YKC cut-off wall in the middle, the construction period of cofferdam is ensured and the first unit can be commissioned on schedule.

关 键 词：围堰 防渗 高压旋喷 YKC 防渗墙 

分 类 号：TV551.3[水利工程—水利水电工程] TV640.31