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本文采用非线性有限元分析和地质力学模型试验相结合的方法,就水工建设中常遇到的,基岩中存在倾向下游的缓倾角软弱夹层,对坝-基体系的抗滑稳定的影响进行分析研究。探讨在水压超载过程、岩体材料的变形特性和强度指标不同时,坝基的应力分布、变形状态和破坏形式的变化规律。以阐明渐进破坏的破坏机理和整体失稳的几种可能方式,并就目前常用的抗滑稳定分析方法中一些问题和抗滑稳定准则提出一些看法。
In this paper, the non-linear finite element analysis and geomechanical model test combined method for hydraulic construction often encountered in the bedrock inclined dip downstream of the weak bedding, the stability of the dam-based system of anti-sliding effect Analysis. The change law of stress distribution, deformation state and failure mode of dam foundation is discussed when water pressure overloading, deformation characteristics and strength index of rock mass are different. To clarify the destructive mechanism of progressive failure and several possible ways of overall instability, and put forward some opinions on some problems and anti-sliding stability criteria in the commonly used methods of anti-sliding stability analysis.