摘要
三峡二期高土石围堰座落在极易液化的新淤积砂基础上，故在基坑钻爆开挖过程所诱发的爆破震动作用下对该淤积砂基础进行抗液化安全评价极具工程意义。本文利用爆震条件下一期围堰淤积砂基础中动孔隙水压力实测资料，结合二期围堰的静力有限元计算成果，设法对二期围堰淤积砂基础是否液化作出科学的评估。
The 2 nd-stage embankment of Three Gorge Project(TGP)is located on a base of alluvial deposit which has a strong tendency of liquefaction,so it is of practical importance to carry on a safety assessment of liquefaction.in the alluvial deposit base under the continvous action of blasting vibration which is owned to the pit excavation by blasting.In this paper,by using the data of measured porewater pressure in alluvial deposit base of first-stage embankment of TGP,and combining with the static stress calculated by FEM,We manage to give a reasonable assessment of tiquefaction in alluvial deposit of 2nd-dtage embankment of TGP.
出处
《西部探矿工程》
CAS
1998年第4期4-7,共4页
West-China Exploration Engineering
关键词
围堰
淤积砂
爆破震动
液化
安全评价
基础
embankment alluvial deposit blasting vibration liquefaction
