[1]常鸣,唐川,李为乐,等.汶川地震区绵远河流域泥石流形成区的崩塌滑坡特征[J].山地学报,2012,(05):561.
　River Basin,ChinaCHANG Ming,TANG Chuan,et al.The Characteristic of Collapse and Landslide by Wenchuan Earthquake in Debris Flow for Mative Region along the Mianyuan[J].Mountain Research,2012,(05):561.
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汶川地震区绵远河流域泥石流形成区的崩塌滑坡特征()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2012年05期
页码:
561
栏目:
山地学报
出版日期:
2012-01-01

文章信息/Info

Title:
The Characteristic of Collapse and Landslide by Wenchuan Earthquake in Debris Flow for Mative Region along the Mianyuan
作者:
常鸣;唐川;李为乐;赵学宏;黄翔超;
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
Author(s):
River Basin; ChinaCHANG Ming; TANG Chuan; LI Weile; ZHAO Xuehong; HUANG Xiangchao
State Key Laboratory for Geo-Hazard Prevention and Geo-Environment Protection，Chengdu University of Technology，Chengdu 610059，China
关键词:
汶川地震; 崩塌; 滑坡; 泥石流; 绵远河流域
Keywords:
Wenchuan earthquake; collapse ; landslide; debris flow; Mianyuan River
分类号:
P642.2
文献标志码:
A
摘要:
2008年汶川地震以后,四川省绵竹市清平乡表面覆盖了大量松散堆积物,这些物源在震后的几年中易受到暴雨激发,导致大量浅层崩塌、滑坡的形成,尤其在泥石流形成区。研究泥石流形成区崩塌、滑坡特征,有助于分析滑坡向泥石流转化的特点。2010-08-13绵远河流域发生强降雨致使数十条沟暴发泥石流,在统计了研究区内20条沟泥石流形成区内的386个崩塌、滑坡后,利用野外调查及高精度遥感影像,将386个崩塌、滑坡全部解译,并利用GIS分析统计出崩塌、滑坡在坡度、坡向、高程、沟道纵坡降、地层岩性、沟壑密度因子上的分布特征,得出在海拔1 700～2 400 m范围内崩塌、滑坡密度最大;坡度是影响崩塌、滑坡分布的重要...
Abstract:
After the 2008 Wenchuan earthquake，an abundance of loose coseismic material sources were present in the Qingping town Mianzhu city of Sichuan province，where in later years served as source material for rainfallinduced shallow landslides，especially in forming region of debris flow. The characteristic of collapse and landslide in forming region of debris flow can help to analyze landslide transform to debris flow. A heavy rain occurred on August 13th along Mianyuan River，where a number of debris flow occurred. A spatial database，which included 386 landslides in forming region of 20 debris flows，was developed and analyzed using high precision image and field survey within the Mianyuan River basin.We also used GIS to census the rule of distribution of landslides in gradient，slope direction，elevation，and channel gradient，the lithology of stratum and drainage density factors. 　　After analysis of the statistics in six evaluation factors，we find that the largest landslide density in the scope of 1 700～2 400 m，the slope is the important factor of landslide distribution，with the increase of slope ，the density will increase. When landslide slope >70 °，it can is instabiliy. The aspect of perpendicular of the landslide significantly more than parallel to the seism genic faults；a lot of collapse landslides highly concentrated in the 500‰～600‰ slope of gully；the carboniferous strata of limestone can easily produce the large amount of collapse landslide，especially in the soft soil above the hard bedrock zone.The landslide concentrating distribute in micro degrees of soil erosion area，so we should strengthen the monitoring and warning system in this area.

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备注/Memo

备注/Memo:
收稿日期(Received date)：2012-05-015；改回日期(Accepted) : 2012-06-05。
基金项目（Foundation item）：国家科技支撑计划课题（2011BAK12B01）。\[This research is supported by the National Science and Technology Support Plans Program (2011BAK12B01).\]
作者简介（Biography）：常鸣（1985-），男，博士研究生，研究方向：环境地质、地质灾害、遥感与GIS应用。［Chang Ming (1985－)，male，Ph D，majoring in environment geology,“3S”technologies and geological hazards．］E-mail：changmxq@126.com
更新日期/Last Update: 1900-01-01