中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
四川省汶川县簇头沟“7.10”泥石流灾害成因与特征分析

文献类型:期刊论文

作者葛永刚; 张建强; 严炎
刊名灾害学
出版日期2014-07
卷号29期号:3页码:229-234
关键词低频泥石流 成因 特征 堰塞湖 簇头沟 四川汶川
其他题名Research on the Debris flow Hazards in Cutou Gully Wenchuan County on July 10, 2013
通讯作者严炎
中文摘要簇头沟是岷江右岸一条低频泥石流沟,受2013年7月极端暴雨的影响,暴发特大泥石流。结果显示,汶川地震造成流域内的坡面和沟道堆积的大量的松散物质是泥石流形成的物源,流域上游暴雨及其形成的山洪是此次泥石流形成的激发因子。“7.10”泥石流为过渡性泥石流,泥石流容重约为1.8~1.9 t/m3,沟口处最大流速为9.2 m/s,峰值流量为515 m3/s,冲击力达到3 657 t,输沙总量约为50×104 m3。泥石流过程表现为为暴雨(山洪)—滑坡(坡面泥石流)—泥石流—堰塞湖—溃决洪水。对震后低频泥石流危险性认识不足、防治工程设计标准偏低是此次灾害造成重大损失的主要原因。在未来灾害防治工程设计中,应合理估计灾害规模和潜在风险。
英文摘要Abstract: The catastrophic debris flow in Cutou gully resulted from extreme rainstorms, which was low frequency debris flow gully on the right of Mingjiang river. The incompact substance in the gully was the main reason which causes this catastrophic debris flow; however, the rainfall and mountain torrent were the inducing factors. Debris flows were 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 515 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 dangerous low frequency debris flow gullies assessement and the destruction of debris flow control constructions leaded to huge property losses. It was strongly suggested for mitigation that estimated the scale of hazards resonably, strengthened assessement of the dangerous debris flow gullies.
分类号TU457;X4
收录类别CSCD
资助信息国家科技支撑项目(2012BAK10B04);中国科学院重点部署项目(KZZD-EW-05-01)
原文出处http://www.zaihaixue.com/oa/darticle.aspx?type=view&id=20140342
语种中文
公开日期2014-07-10
源URL[http://ir.imde.ac.cn/handle/131551/7019]  
专题成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
推荐引用方式
GB/T 7714
葛永刚,张建强,严炎. 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,2014,29(3):229-234.
APA 葛永刚,张建强,&严炎.(2014).四川省汶川县簇头沟“7.10”泥石流灾害成因与特征分析.灾害学,29(3),229-234.
MLA 葛永刚,et al."四川省汶川县簇头沟“7.10”泥石流灾害成因与特征分析".灾害学 29.3(2014):229-234.

入库方式: OAI收割

来源:成都山地灾害与环境研究所

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