坝基深层抗滑稳定的刚体极限平衡法研究

深层抗滑稳定一直是重力坝设计的关键性问题,由于该问题的复杂性,目前对于分析方法尚无明确和统一的规定。在介绍常用分析方法——刚体极限平衡法力学原理的基础上,给出了等安全系数值的计算式,并结合弄另水电站非溢流7号坝段,分析比较了该法常用的三种计算方法,同时推导了相应的垂直渐近线。在实际工程设计中,应根据工程的重要性,参照已建工程,采用合理的分析方法进行研究。

STUDY ON RIGID EQUILIBRIUM LIMIT METHOD ON STABILITY AGAINST DEEP SLIDE OF DAM FOUNDATION

It is a key problem of stability against deep sliding in gravity dam designing,and there are no specific and unified methods due to the complexity of the problem at present.The formulas of equal safety factor and vertical asymptotes are deduced,on the basis of the introduction to the basal method——rigid equilibrium limit method.And the safety coefficients obtained by there different approaches are compared through 7th overflow dam of Nongling Hydroelectric Power Station.Suitable method should be adopted according to previous buildings and the significance of engineering in design.