汶川县地震诱发崩滑灾害影响因素的敏感性分析

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	汶川县地震诱发崩滑灾害影响因素的敏感性分析
	崔鹏; 张建强
刊名	四川大学学报(工程科学版)
	2010
卷号	42 期号:5 页码:105-112
关键词	汶川地震崩塌滑坡敏感性确定性系数(CF)
其他题名	Triggering Factors Susceptibility of Earthquake-induced Collapses and Landslides in Wenchuan County
通讯作者	崔鹏
合作状况	国内
中文摘要	震后遥感影像与调查结果表明,汶川Ms8.0级地震在汶川县城约4083km2的区域内诱发了5528余处崩塌、滑坡灾害。利用GIS技术对地震地质灾害的分布与地层岩性、距断裂距离、坡度、高程等因素的关系进行统计分析,结合崩滑的确定性系数方法(CF),对诸影响因子进行敏感性分析,确定该区域内各因子最利于地震滑坡发育的数值区间,结果表明:地震崩塌滑坡主要分布在元古界、震旦系、二叠系硬质岩石分布的地层里,坡度为大于40°的坡体上;活动断裂10km缓冲区内,未动断裂6km缓冲区内崩滑密集分布;崩滑发育较有利的高程范围位于1000～2500m;相对高差范围位于600～1000m之间,岷江干流对崩滑分布起绝对控制作用。分析得出影响本次崩塌滑坡分布的因子具有地震波传播介质效应和距离效应;由地震产生的崩滑与降雨诱发的崩滑在岩性、坡度的发生区间上有较为明显的区别;并为进行其他地区区域地震崩滑灾害稳定性评价提供了可以借鉴的科学依据。
英文摘要	The remote sensing image and survey results after the earthquake showed that,the Wenchuan Ms8.0 Earthquake had induced more than 5 528 collapses and landslides in the Wenchuan County with the area of about 4 083 km2.Based on GIS,the statistical relationships between the collapses and landslides distribution and the factors,such as the lithology,distance to faults,slope gradient,elevation and others,were analyzed.Susceptibility of triggering factors of Wenchuan Earthquake was analyzed by the means of slope certainty factors(CF).The most numerical intervals of each factor which are inclined to hazards were determined.The results showed that the hazards mainly distributed in the stratum of Proterozoic,Sinian and Permian with hard rock,in the slope of more than 40 degree,within a 10 km buffer zone to the active faults and 6 km to the no active faults.The collapses and landslides distributed mainly in the area with the elevation 1 000 ~ 2 500 m and relative height between 600 ~ 1 000 m.The mainstream of the Min River absolutely controlled the hazard distribution.The conclusions indicated that the factors have the effect of seismic wave propagation in media and distance effect.There is significant different numerical interval which inclined to collapses and landslides in lithology and slope between induced by earthquake and by rainfall.
学科主题	灾害学
分类号	P642.22
收录类别	EI ; CSCD
资助信息	国家“973”计划资助项目(2008CB425802
语种	中文
CSCD记录号	CSCD:3986221
公开日期	2012-05-03
内容类型	期刊论文
源URL	[http://192.168.143.20:8080/handle/131551/3916]
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	崔鹏,张建强. 汶川县地震诱发崩滑灾害影响因素的敏感性分析[J]. 四川大学学报(工程科学版),2010,42(5):105-112.
APA	崔鹏,&张建强.(2010).汶川县地震诱发崩滑灾害影响因素的敏感性分析.四川大学学报(工程科学版),42(5),105-112.
MLA	崔鹏,et al."汶川县地震诱发崩滑灾害影响因素的敏感性分析".四川大学学报(工程科学版) 42.5(2010):105-112.