【摘要】 大渡河金川水电站河床覆盖层层位复杂、颗粒组成变化较大,坝基砂层透镜体天然状态下局部存在液化势。经初判、复判、Seed简化法和有限元动力计算等多种方法评价,建坝后砂层透镜体不会发生液化破坏。采取工程措施,可以确保建在深厚覆盖层上的金川大坝安全。更多还原

【Abstract】 Location of the overburden on the riverbed is complicated in Jinchuan Hydropower Project,the overburden particle composition varies largely and the sand- layer lens in the dam foundation is with liquefaction potential in natural condition. Through assessment by methods such as primary judgment,re- judgment,Seed simplified method and finite element dynamic computation,etc,the sand- layer lens will not result in liquefaction failure. Through the engineering measures to be taken,safety of the dam,Jinchuan Hydropower Project,to be built on the deep and thick overburden can be assured.更多还原