5·12汶川地震在武都区造成灾害的特点分析

An Analysis of the Disaster Characteristics of the "5·12 Wenchuan Earthquake" in Wudu Region

5.12汶川地震引发了崩塌、滑坡、泥石流和地裂缝等次生地质灾害.经过对武都区地质灾害应急排查,确定地质灾害隐患点516处,其中由地震引发新的灾害占87.8%.通过运用GIS技术手段对灾害点综合分析,发现这次地震在武都区造成的灾害具有一定的规律性.通过灾害点具体现象和理论相结合分析了3种灾害特点的成因,为以后抗震减灾提供一些技术参考和理论依据.

The 5 · 12 Wenchuan earthquake has triggered major ground collapses, landslides, debris flows, secondary earth surface cracks, and other geological hazards. Our detailed emergency investigation around the Wudu region,identified potential geological hazards at 516 places, 87.8 percent of which was caused by new earthquakes. By using the GIS technology to analyse key points of the disaster, we have found that the damages caused by this earthquake have a certain degree of regularity. Through the actual phenomena of the specific disaster places and combined with our theoretical analysis, we have analyzed three characteristics and their causes, thus providing reliable technical reference for future disaster reduction.