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一、引言 大坝岩基中常存在软弱夹层,它们往往成为大坝稳定的控制因素.在软弱夹层中,由地质构造形成的较之非构造性的原生或次生软弱夹层对基岩稳定性的影响更为重要. 如何选用这种泥化夹层的强度准则问题,是一个有争议的困难问题.为合理地确定泥化夹层的影响,必须综合其地质形成条件、夹层现今状态、化学、物理、力学特性以及工程建筑的工作条件,研究其变形——破坏机制.
I. INTRODUCTION There are often weak interlayers in dam foundations, which are often the controlling factors for the stability of dams. In weak interlayers, the stability of bedrock compared to non-structural primary or secondary weak interlayers is formed by geological formations. The influence is even more important. How to choose the strength criterion of this mudified interlayer is a controversial and difficult problem. In order to reasonably determine the influence of the mudified interlayer, it is necessary to integrate its geological formation conditions, the present state of the interlayer, chemistry, physics, Mechanical properties and working conditions of engineering buildings, study its deformation - destruction mechanism.