摘要
通过强度折减法对水位骤升骤降下的灰坝渗流应力耦合稳定性进行有限元分析,经计算发现:渗流相比无渗流工况,坝体安全系数降低明显;水位上升,灰坝安全系数降低。而正交试验研究渗流作用下子坝对灰坝整体稳定性的影响情况发现:在渗流作用下,子坝的重度γ对灰坝整体稳定性影响最显著,安全系数随子坝重度γ增大而减小。
The seepage and stress coupling stability under the water level surge and sudden drop of ash dam was analyzed by finite element strength reduction method. It is concluded through calculation that： compared to no seepage,the safety factor of the dam decreased significantly on seepage condition; Water level rise,the ash dam safety factor reduced. Through orthogonal experiment,the effect of the sub dam on the overall stability of the gray dam was found： under the action of seepage,the severe γ impact on the overall stability of the dam is the most significant,and the safety factor decreased with the increase of the severe γ.
出处
《贵州大学学报（自然科学版）》
2017年第1期115-118,共4页
Journal of Guizhou University:Natural Sciences
基金
贵州省科学技术基金项目(黔科合J字[2011]2039号)
关键词
水位骤升骤降
灰坝
有限元强度折减法
渗流应力耦合
稳定性
正交试验
water level surge and sudden drop
ash dam
finite element strength reduction method
the seepage and stress coupling
stability
orthogonal test
