摘要
根椐地下水三维非稳定渗流理论，考虑应力场和渗流场的耦合作用，采用三维有限元法对恰希玛核电厂砂土厂址上的C-4的核岛基坑降水开挖过程进行了数值模拟分析．得到了基坑的内外水头、孔隙水压力和周边地表沉降分布规律，结果表明基坑降水设计合理，满足工程实际要求，基坑降水开挖数值模拟可以为设计与施工提供理论参考。
According to groundwater 3-D unsteady seepage theory, considering coupled action of seepage and stress field, using 3-D finite element, the foundation pit dewatering of nuclear island on CHASHIMA NPP Unit-4 sand site is simulated and analyzed so as to get distributing rule of inside and outside water head, pore water pressure and ground settlement. The result indicates dewatering design meets the practice requirements, and dewatering numeric simulation may offer theoretic reference for de- sign and construction.
出处
《核电工程与技术》
2013年第2期18-25,共8页
Nuclear Power Engineering and Technology
关键词
核岛
基坑降水
有限元法
水头
孔隙水压力
地表沉降
nuclear island, foundation pit dewatering, finite element analysis, water head, pore waterpressure, ground settlement
