一、前言目前,许多岩石力学专著都指出,在现有的各种强度理论中,唯有莫尔理论能较好地反映岩石的强度性质.莫尔理论认为,材料的强度性质可以用一条极限强度曲线(莫尔包线)τ=f(σ)来表示;这条曲线的具体形状是通过试验确定的. 关于岩石的极限强度曲线,已有不少学者进行了研究;有的认为是直线,有的认为是摆线,有的认为 I. INTRODUCTION At present, many monographs on rock mechanics point out that among the various existing strength theories, only Moiré theory can better reflect the strength properties of rocks. The Mohr theory holds that the strength properties of materials can be used to a limit. The strength curve (Mohrer) is represented by τ = f(σ); the specific shape of this curve is determined by experiments. The rock’s ultimate strength curve has been studied by many scholars; some consider it to be a straight line. Some think it is a cycloid, some think