基于层次—主成分分析法的泥石流危险度评价

Evaluation of Debris Flow Risk Based on Analytic Hierarchy Process and Primary Component Analysis

泥石流作为一种突发的自然灾害具有破坏性、复杂性和不确定性等特点.综合考虑泥石流的基本特征,建立了基于层次一主成分分析法的综合评价模型,介绍了其基本原理及实施步骤,并且以云南省的泥石流沟为研究对象进行了综合的评价.结果表明,基于层次一主成分分析法的综合评价模型能有效地对泥石流危险度作出科学的评价,为泥石流的预防治理提供科学而又准确的依据.

Debris flow is a kind of sudden natural disasters with destructive, complexity and uncertainty characteristics. Comprehensive evaluation model based on analytic hierarchy process and primary component analysis is established with considering the basic characteristics of debris flow. The basic principle and implementation steps are introduced. And the comprehensive evaluation of the debris flow in Yunnan Province is carried on as the research object. The results show that the evaluation model based on analytic hierarchy process and primary component analysis can effectively make a scientific evaluation of risk degree of debris flows and provides a scientific and accurate basis for prevention of debris flow.