宮全美　吳世明
　

摘　要　指出動力失穩的原因是由于粉煤灰的液化導致抗剪強度的降低；利用Biot固結方程，分析了浙江肖山電廠粉煤灰壩在正常和非正常兩種工況下，受7度和8度地震荷載時的液化區域和動力穩定性，認為該灰壩在7度地震作用下是動力穩定的，而在洪水逼近子壩的非正常工況下，承受8度地震荷載時則有可能失穩。
關鍵詞　粉煤灰壩，液化，穩定性
分類號　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