莫尔-库伦准则是岩土材料的破坏准则,也称为极限平衡条件。当土中一点的应力状态满足极限平衡条件时,该点的土就濒于破坏。在土力学教材和文献由,大都是借助于莫尔园和库伦强度线从几何关系推导这一准则的。崔托维奇教授和吴天行教授分别给出了推导该准则的解析方法,但前者推导较烦,后者则须 The Mohr-Coulomb criterion is a failure criterion for geomaterials, also known as limit equilibrium conditions. When the stress state of a point in the soil meets the limit equilibrium condition, the soil at that point is damaged. In soil mechanics textbooks and literature, most of them are derived from the geometric relations by means of the Moore Park and Coulomb intensity lines. Prof. Tritovic and Prof. Wu Tianxing respectively provided analytical methods for deriving the criteria, but the former deduced annoyance, while the latter required