水电与新能源
水電與新能源
수전여신능원
HYDROPOWER AND NEW ENERGY
2014年
7期
8-10
,共3页
猴子岩大坝%深窄基坑%开挖%施工技术
猴子巖大壩%深窄基坑%開挖%施工技術
후자암대패%심착기갱%개알%시공기술
Houziyan dam%deep and shallow foundation pit%excavation%construction techniques
猴子岩水电站面板堆石坝坝址河谷深、岸坡陡、覆盖层深厚、最大下挖深度85．5 m。为确保基坑开挖，采用上下游围堰防渗墙及墙下帷幕、大坝基坑抽排水优化、基坑厚层粘质粉土开挖施工技术，解决了工程难题。
猴子巖水電站麵闆堆石壩壩阯河穀深、岸坡陡、覆蓋層深厚、最大下挖深度85．5 m。為確保基坑開挖，採用上下遊圍堰防滲牆及牆下帷幕、大壩基坑抽排水優化、基坑厚層粘質粉土開挖施工技術，解決瞭工程難題。
후자암수전참면판퇴석패패지하곡심、안파두、복개층심후、최대하알심도85．5 m。위학보기갱개알，채용상하유위언방삼장급장하유막、대패기갱추배수우화、기갱후층점질분토개알시공기술，해결료공정난제。
The construction of the concrete face rockfill dam in Houziyan hydropower station is of great difficulties due to the deep and shallow valley , steep slope, deep overburden and maximum excavation depth over 85.5 m.To ensure the safety of foundation pit excavation , some construction techniques are successfully adopted , including the cut-off walls and the curtain grouting underneath the upstream and downstream cofferdams , optimized water pumping and drainage schedule of the pit , special excavation technique for deep clayey silt in the pit .
