“4·20”芦山地震灾区次生山地灾害易发性评价

被引：7

作者：

丁明涛 ^{[1
]}

程尊兰 ^{[2
]}

王青 ^{[1
]}

机构：

[1] 西南科技大学环境与资源学院

[2] 中国科学院水利部成都山地灾害与环境研究所

来源：

山地学报 | 2014年 / 01期

关键词：

芦山地震灾区; 次生山地灾害; 易发性评价; 信息量模型;

D O I：

10.16089/j.cnki.1008-2786.2014.01.015

中图分类号：

P694 [灾害地质学]; P315.9 [工程地震];

学科分类号：

0818 ; 081803 ;

摘要：

选择"4·20"芦山地震灾区为研究区,在野外实地考察的基础上,结合高精度遥感影像解译分析,针对地震灾区滑坡、崩塌和泥石流等次生山地灾害的形成条件展开系统分析;在ArcGIS 9.3软件支持下,采用信息量模型,选择坡向、坡度、地层岩性、断裂带、河流冲刷作用、地震烈度和降水量7个影响因子作为芦山地震灾区次生山地灾害易发性评价的指标参数,将其划分为高易发区、中易发区和低易发区,该评价结果与实地考察结果基本吻合。基于GIS的信息量模型能够很好地为芦山地震灾区次生山地灾害易发性区划研究提供指导,其结果可以用来解决次生山地灾害易发性评价中效率低、精度差、费时费力等问题,从而实现次生山地灾害易发性评价的信息化和科学化。

引用

页码：117 / 123

页数：7

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