灾害学Issue(3)：229-234,6.DOI:10.3969/j.issn.1000-811X.2014.03.042
四川省汶川县簇头沟“7.10”泥石流灾害成因与特征分析
Research on the Debris Flow Hazards in Cutou Gully, Wenchuan County on July 10,2013
摘要
Abstract
The catastrophic debris flow in Cutou gully resulted from extreme rainstorms,which is a low fre-quency debris flow gully on the right of Mingjiang river.The incompact substance in the gully is the main reason of the catastrophic debris flow;however,the rainfall and mountain torrent are the inducing factors.Debris flows are featured with sub-viscous debris flows,the density of 1.8~1.9 t/m3 ,the maximum velocity of 9.2 m/s,the peak discharge of 5 15 m3/s,the impact force of 3 657 t and the volume of 50 ×104 m3 .Debris flow induced disaster chains,including the process of rainstorm-landslide-debris flow-dammed lake-outburst flood.The shortage of dan-gerous low frequency debris flow gullies assessement and the destruction of debris flow control constructions leaded to huge property losses.It is strongly suggested for mitigation that estimated the scale of hazards resonably, strengthened assessement of the dangerous debris flow gullies.关键词
低频泥石流/成因/特征/堰塞湖/簇头沟/四川汶川Key words
low frequency debris flow/causes/characteristics/dammed-lakes/Cutou Gully/Wenchuan in Sichuan分类
建筑与水利引用本文复制引用
严炎,葛永刚,张建强,曾超..四川省汶川县簇头沟“7.10”泥石流灾害成因与特征分析[J].灾害学,2014,(3):229-234,6.基金项目
国家科技支撑项目（2012BAK10B04）；中国科学院重点部署项目 （）
