汶川县泥石流沟在汶川“5.12”地震后的活动趋势  

Activity tendency of debris flow gully in Wenchuan County after "5.12" Wenchuan earthquake

作　　者：余斌[1] 谢洪[2] 王士革[2] 章书成[2] 鲁科[1] 韩林[1] 

机构地区：[1]成都理工大学地质灾害防治与地质环境保护国家重点实验室,四川成都610059 [2]中国科学院成都山地灾害与环境研究所,四川成都610041

出　　处：《自然灾害学报》2011年第6期68-73,共6页Journal of Natural Disasters

基　　金：国家自然科学基金资助项目(40871054);成都理工大学地质灾害防治国家重点实验室开放研究基金资助项目(DZKJ-0810)

摘　　要：2008年5月12日,四川省汶川县发生了8级强烈地震。震后,灾区内多处暴发了泥石流。以地震灾区汶川县泥石流为研究对象,综合考察了6条处在不同地震烈度和具有不同泥石流形成特点的泥石流沟,分析了泥石流的活动趋势,并探讨了泥石流活动受地震影响的时间规律,为地震灾区的泥石流减灾和防治工作提供参考。A strong Wenchuan earthquake happened on May 12,2008.Many debris flows were triggered in earthquake stricken area by Wenchuan earthquake.In this paper,we focus attention on the debris flows in Wenchuan County,Sichuan Province.The debris flow gullies in different earthquake intensity areas and with different characteristics were investigated.The activity tendency of debris flows was obtained by analyzing the solid source features of debris flows,such as the volume and location of sediment provided by landslides and avalanche.The time of earthquake effect on triggering debris flow was discussed.These works will provide some references to the prevention and mitigation of debris flow hazard in earthquake stricken areas.

关 键 词：汶川大地震 泥石流沟 活动趋势 

分 类 号：R315.9[医药卫生—基础医学] P642.23[天文地球—工程地质学]