一、引言 坝基岩体内有缓倾角软弱夹层的重力坝的抗滑稳定分析,是当前坝工设计中一个十分重要的问题。目前国内外多采用刚体极限平衡法、有限元分析法和地质力学模型试验等3种方法。刚体平衡法虽使用简单方便,但它的致命的弱点是只考虑了滑裂面上的静力平衡条件,没有校核达到这种极限平衡状态时的应力和变形状态。电子计算机和 I. INTRODUCTION Anti-sliding stability analysis of a gravity dam with a weak dip sandwich in the dam base rock is a very important issue in current dam design. At present, three methods are used at home and abroad, such as rigid body limit equilibrium method, finite element analysis method and geomechanical model test. Although the rigid body balance method is simple and convenient to use, its fatal weakness is that only the static equilibrium conditions on the slip surface are taken into consideration, and the stress and deformation states when this limit equilibrium state is reached are not checked. Electronic computer and