Abstract: Taking landslides and debris flows in sichuan basin and regions near the boin as an example.it is opproached for rain tall to effect on catastrophic geollgic processes in this paper, i. e. earlier raintall is an ample condition for the processes to develope, and rainfall tenjaty is a necessary conditions for the processes to develope.

Key words: earlier rainfall, rainfall tensity, landslide, debris flow, relationship

摘要： 本文以四川盆地及邻近地区为例,综合分析了降雨对滑坡、泥石流发育的基本作用.研究认为,前期降雨量是滑坡、泥石流等不良地质现象发育的充分条件,而降雨强度则是必要条件.前期降雨量与降雨强度这一对充要条件进行滑坡、泥石流预报预警的主要指标.

关键词: 前期降雨量, 降雨强度, 滑坡, 泥石流, 关系