西部地区地质灾害分布规律评价初探

Appraise of distribution law of geological disaster in western China

根据灾害特点将西部地区主要地质灾害分为特殊土质灾害和工程地质灾害。对特殊土质灾害,对其分布面积及种类进行分析,得出了西部地区各省特殊土质灾害分布综合图。对工程地质灾害,根据其发生频次利用贡献加权法进行计算,得出了各种灾害的权重,将计算结果按照三级灾区划分工程地质灾害等级,得出了西部地区各省工程地质灾害相对等级灾区分布综合图,直观地显示了西部地区地质灾害分布规律及相对等级灾区的划分。

The distribution and frequency of geological disasters in western China were analyzed. And according to characteristic of all sorts of disasters in western area, it was divided into two groups： the soil disaster and the geological engineering disaster. For the soil disaster, the distribution area and sorts was analyzed, and the Synthetic distributing chart is given, which shows law of the particular character soil disaster. For the geological engineering disaster, according to frequency and using weighted factor, frequency and weight score of all kinds of disaster in every province were gotten. At last the relative rank synthetic distributing chart of the geological engineering disaster in western area was drawn according to the relative rank that divided the geological disasters into three ranks. It visually shows distribution law of the geological engineering disaster in western area and the relative division of the disaster area.