摘要
"5.12"汶川大地震诱发了大规模以滑坡、崩塌为主的地质灾害,这些震害地区改变了原有的地貌形态,形成多处堰塞湖,毁坏民房和道路,使之成为严重的次生滑坡灾害危险区域。以成都市的都江堰市、彭州市、崇州市、邛崃市、大邑县地震区为研究区,分析了滑坡分布与震区地质地貌条件和宏观烈度的统计关系。在确定宏观震中位置的基础上,采用最大地震滑坡震中距方法研究了不同规模滑坡的分布特点,并得到了线性分布的规律。
The earthquake of May 12 in Wenchuan induced lots of landslides,rockfall and topographic alteration,which formed many barrier lakes,destroyed houses and roads and led to a dangerous zonie of secondary landslide disasters.In this paper,taking Dujiangyan,Pengzhou,Chongzhou,Qionglai and Dayi in Chengdu City as research areas,the statistical relationship of laudslide distribution with geological /geomorphological condition and macroscopic intensity was analyzed.Based on the determination of macroscopic epicentral location,the distributive characteristics of landslides with differnt scale were researched by using maximum epicenter distance method and a linear distribution rule are obtained.
引文
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