工程地质学报2013，Vol.21Issue(4)：525-533,9.
基于灰色关联法的地震灾区泥石流危险性评价——以北川县泥石流为例
GREY CORRELATION METHOD BASED HAZARD ASSESSMENT OF DEBRIS FLOW IN QUAKE-HIT AREA-TAKING DEBRIS FLOWS IN BEICHUAN AS AN EXAMPLE
摘要
Abstract
After the Wenchuan earthquake,debris flows in quake-hit area have the characteristics of smaller critical rainfall,greater scale and higher risk.Considering the effect of rainfall and earthquake,grey correlation method has been used to analyse the weights of scale,valley area,gully length,basin elevation difference,cutting density,unstable groove proportion,average annual rainfall and seismic intensity of 72 debris flow valleys in Beichuan.Thus a hazard assessment model of debris flow in quake-hit area has been established to evaluate this 72 debris flow valleys.And research results show the following:the weights of average annual rainfall and seismic intensity are greater than the other factors; the evaluation results based on the model raised in this essay are roughly consistent with those given by Liu Xilin.But the risk value improves relatively,and the risk of seven debris flow valleys among those improves a grade.关键词
震区泥石流/灰色关联法/影响因子/危险性评价Key words
Debris flow in quake-hit area/ Grey correlation method/ Impact Factors/ Hazard Assessment分类
天文与地球科学引用本文复制引用
魏斌斌,赵其华,韩刚,张海泉..基于灰色关联法的地震灾区泥石流危险性评价——以北川县泥石流为例[J].工程地质学报,2013,21(4):525-533,9.基金项目
国家重点基础研究发展计划(2011CB013501). （2011CB013501）
