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 char- acteristics of landslides with differnt scale were researched by using maximum epicenter distance method and a linear distribution rule are obtained.
出处
《自然灾害学报》
CSCD
北大核心
2009年第5期10-15,共6页
Journal of Natural Disasters
基金
国家科技支撑项目(2008BAK50B04)(2006BAC04B05)
科技部国际合作项目(2007DFA21150)
科技部(气象)科研专项(GYHY(QX)2007-6-37)
中科院三期创新项目(KJCX3-SW-L1-6)
关键词
地震
滑坡
分布
震中距
earthquake
landslide
distribution
epicenter distance
