宫全美　吴世明
　

摘　要　指出动力失稳的原因是由于粉煤灰的液化导致抗剪强度的降低；利用Biot固结方程，分析了浙江肖山电厂粉煤灰坝在正常和非正常两种工况下，受7度和8度地震荷载时的液化区域和动力稳定性，认为该灰坝在7度地震作用下是动力稳定的，而在洪水逼近子坝的非正常工况下，承受8度地震荷载时则有可能失稳。
关键词　粉煤灰坝，液化，稳定性
分类号　TU435

Liquefaction and Dynamic Analysis of Xiaoshan Fly-ash Dam

Gong Quanmei
(Dept.of Civil Eng.,Shanghai Tiedao Univ.,Shanghai 200331)
Wu Shiming
(Inst. of Civil Eng., Zhejiang Univ.,310027)

Abstract　In this paper,the author analyzes xiao-shan fly-ash dam′s Liquefaction and dynamic stability under two kinds of project and two kinds of earthquake level with the help of D-Biot equation.Finally the author finds that the dam is safe under seven grade,but may be broken under eight grade.
Keywords　fly ash dams,Liquefaction,stability