| 浙江省泥石流发育特征 |
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| 引用本文： | 岳丽霞,余淑姣,唐小明.浙江省泥石流发育特征[J].中国地质灾害与防治学报,2010,21(3):52-56. |
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| 作者姓名： | 岳丽霞 余淑姣 唐小明 |
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| 作者单位： | 浙江省地质矿产研究所,浙江,杭州,310007 |
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| 摘 要： | 浙江省地形复杂,山地面积大,暴雨频繁,尤其近年来受台风影响,泥石流等山地灾害频发。本文通过浙江省泥石流的调查成果,综合分析区内泥石流发育特征。通过分析,浙江泥石流主要有如下独特的发育特征:沟床比降大,相对高差小,两侧山坡坡度大,流程短,流域面积小等;地质构造上:泥石流主要发育在全-强风化的火山碎屑岩区域,沿深大断裂成带状分布;泥石流三区特征:三区分界不明显,尤其流通区和堆积区难以区分等。本文初次系统分析总结了浙江省泥石流发育特征,对浙江省泥石流形成机理、泥石流防灾减灾等的进一步分析研究提供了科学的依据。
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| 关 键 词： | 泥石流 发育特征 泥石流三区 浙江省 |
Characteristics of debris flows in Zhejiang Province |
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| YUE Li-xia,Yu Shu-jiao,Tang Xiao-ming.Characteristics of debris flows in Zhejiang Province[J].The Chinese Journal of Geological Hazard and Control,2010,21(3):52-56. |
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| Authors: | YUE Li-xia Yu Shu-jiao Tang Xiao-ming |
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| Institution: | (Institute of geology and mineral research of Zhejiang province,Hangzhou 310007,China) |
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| Abstract: | As there are various land forms,a large area of mountainous areas and frequent storms in Zhejiang Province,debris flow accidents hit there more often,especially under the impacts of typhoon in the recent years.Based on the survey of debris flows in Zhejiang Province,the paper analyzed their formation characteristics from a synthetic viewpoint.The formation characteristics of debris flow were found in three aspects.Firstly,the debris flows generally have a large gradient ratio of ditch and a small relative relief,where the slopes on both sides had a big slope degree,which made the flow path short and the catchment area small.Secondly,debris flows usually occurred in the strongly weathered volcanic clastic area,often in a ribbon shape along the deep large fractures.Third,it was hard to identify the typical features,namely the forming zone,the transporting zone and the piling zone,of the debris flows.The conclusions of the paper could provide references for studies on formation mechanism and hazard mitigation for Zhejiang Province. |
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| Keywords: | debris flows development characteristics three featured zones of debris flow Zhejiang Province |
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