Abstract: The stability of the rock slope mainly controled by the joint face,which can incise the slope into some wedge.So the rock slope will breake when the wedge loss of stability.

• 摘 要: 岩质边坡的稳定性主要受节理面控制,边坡的破坏主要是由节理面切割形成的楔形体失稳造成的。