湖北省降雨型滑坡泥石流及其降雨因子的时空分布、相关性浅析

Spatial and Temporal Distribution of Rain-caused Slopeslides and Debris Flows in Hubei Province and Correlative Analysis of Rainfall Factors

从几十个典型事例出发，分析了我省降雨型滑坡泥石流的时空分布特征和与之密切相关的降雨气候条件的时空分布规律，较好地揭示了二者间的对应关系。并对１０项降雨气候因子与逐月滑坡泥石流次数作逐步回归，筛选出日降雨量≥５０ｍｍ（暴雨）天数为最紧密因子。

Starting from over fifty typical events, this paper has analysized the spatial and temporal.distribution of rain-caused slopeslides and debris flows and relative rainfall condition, and thus revealed the.positive connection between them in certain degree.Through step-by--step regression method, we have found out that “Heavy Rain”(rainfall in a day≥50.0mm) is the closest and most critical one affecting slopeslides and debris flows among ten rainfall factors.