| 汶川震区北川县城魏家沟暴雨泥石流灾害调查分析 |
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| 引用本文： | 唐川,铁永波.汶川震区北川县城魏家沟暴雨泥石流灾害调查分析[J].山地学报,2009,27(5). |
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| 作者姓名： | 唐川 铁永波 |
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| 作者单位： | 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 |
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| 基金项目： | 国家自然科学基金，地质灾害防治地国家重点实验室研究基金 |
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| 摘 要： | 2008-09-24强降雨过程导致汶川震区北川县城魏家沟泥石流暴发,对老北川县城造成了严重的破坏.由于这场泥石流灾害发生在汶川地震高烈度区,是地震与降雨共同作用下的结果,研究其形成与成灾过程,对于进一步认识强震区泥石流发育特征具有萤要的意义.根据现场调查和高分辨率航空图像解译,分析了魏家沟泥石流流域特征,特别是地震条件下的泥石流物源特征,在此基础上讨论了泥石流起动过程和堆积过程.魏家沟泥石流典型实例表明了汶川震区泥石流已进入一个新的活跃期.因此,应该开展对汶川地震区的泥石流风险评估和监测、早期预警等研究,采取有效的工程措施控制泥石流的发生和危害.
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| 关 键 词： | 泥石流 暴雨 汶川地震 起动过程 北川县城 |
Reconnaissance and Analysis on the Rainstorm Induced Debris Flow in Weijiagou Valley of Beichuan City after the Wenchuan Earthquake |
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| TANG Chuan,TIE Yongbo.Reconnaissance and Analysis on the Rainstorm Induced Debris Flow in Weijiagou Valley of Beichuan City after the Wenchuan Earthquake[J].Journal of Mountain Research,2009,27(5). |
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| Authors: | TANG Chuan TIE Yongbo |
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| Institution: | State Key Laboratory for Geo-Hazard Prevention and Geo-Environment Protection;Chengdu University of Technology;Chengdu 610059;China |
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| Abstract: | A rainstorm induced debris flow hazard occurred in Beichuan City of Sichuan Province of the Wenchuan earthquake affected area on 24 september,2008.Debris flow occurrence is the result from the combination rainfall and earthquake.Therefore,it is significant that make further clear of development characters of debris flows through research on the formative and movement process in high seismic intensity area.This paper analyzed the watershed and cause condition of the debris flow based on field reconnaissance ... |
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| Keywords: | debris flow Wenchuan earthquake rainstorm initiation process Beichuan city |
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