Study shows that most of engineering rock mass destabilizations are resulted from shear strength destruction of joints.So joint shear strength become decisive factor to rock mass stabilities.

• 摘要研究表明，大多数工程岩体失稳以结构面的剪切破坏为主，因此结构面的抗剪强度就成为影响工程岩体稳定性的决定性因素。