仙居抽水蓄能电站下水库进出水口基坑开挖技术.pdf

2014年6月下 施工技术 第43卷第12期 CONSTRUCTION TECHNOLOGY 47 D0I:10.7672/5js2014120047 仙居抽水蓄能电站下水库进出水口基坑开挖技术 贾群超，卢瑶，陈金 (武警水电第二总队第五支队，江苏常州213135) [摘要]通常情况下，抽水蓄能电站下水库进出水口施工前期，多为静水中填筑土石高围堰，然后在围堰的挡护下 进行下水库进出水口基坑施工，由于进出水口基坑狭小，边坡高陡，且周边已建设施较多，同时又受汛期影响，工期 紧张.基坑开挖是进水口施工的首要工序，尤为重要，通过对仙居抽水蓄能电站下水库进出水口基坑开挖进行研 究，总结了其开挖技术要点. [关键词]抽水蓄能电站；基坑；开挖 [中图分类号]TV551.4 [文献标识码]A [文章编号]1002-8498(2014)12-0047-03 Foundation Excavation Technology of Inlet/Outlet of Lower Reservoir in Xianju Pumped-storage Power Station Jia Qunchao Lu Yao Chen Jin No.5 Detachment of No.2 Hydropower Force of Armed Police Changzhou Jiangsu 213135 China) Abstract:Under the normal circumstances at the construction earlier stage of inlet outlet of lower reservoir in Xianju Pumped-storage Power Station in the ordinary course the debris high cofferdam will be filled still in the water.The foundation excavation of inlet outlet of lower reservoir is constructed under the cofferdam protection.Because of the narrow inlet and outlet foundation excavation high and steep slope many surrounding infrastructure facilities meanwhile bined with the influence of the flood season the construction period is very tight.The foundation excavation is the first step in the inlet outlet construction.Through the research of foundation excavation technology of inlet outlet of lower reservoir in Xianju Pumped-storage Power Station the excavation key points are summarized. Key words:pumped-storage power stations;foundation excavation;excavation 1工程概况 高坞组下段含砾晶屑熔结凝灰...