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中文摘要：
在里面世界范围，岩石山崩的最普通的被触发因素被扩大并且强烈降雨。然而，与弄软渗入雨水的行动引起的土壤斜坡失败不同，在降雨的岩石山崩的机制不是清楚的。从破裂力学的看法，岩石斜坡和滑动表面的发展上的裂缝的繁殖被研究。然后基于 hydraulics 公式并且用瑞典弧方法，岩石斜坡的稳定性上的裂缝水的影响是学习的份量上。最后，一个例子被给检查理论途径。当我在快克付小费给的压力紧张因素 K 比岩石的坚韧索引折断 K IC 的大时，滑动岩石斜坡的表面的发展主要被引起由的结果表演在静水力学的压力下面击碎繁殖，并且当裂缝水的深度比最小的价值 h min 大时，斜坡的失败是裂缝水并且在滑动表面上弄软材料的水力的行动的结果。
英文摘要：
In worldwide, the most common triggering factor of rock landslides is extended and intense rainfall. However, different from the soil slope failure caused by softening action of infiltration rainwater, the mechanism of rock landslide in rainfall is not clear. From the view of fracture mechanics, the propagation of cracks on rock slope and the development of sliding surface were researched. Then based on hydraulics formulas and using Sweden arc method, the influence of crack water on stability of rock slope was quantitatively studied. Finally, an example was given to check the theoretical approach. The result shows that the development of sliding surface of rock slope is mainly caused by crack propagation under hydrostatic pressure when the stress intensity factor KI at crack tip is bigger than the toughness index of rock fractures Klc, and the failure of slope is the result of hydraulic action of crack water and the softening of materials on sliding surface when the depth of crack water is bigger than a minimum value hmin.
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