2007•Journal of Earth Sciences and EnvironmentRequires access
Development Density Zoning of Highway Loess Caves by Fuzzy Evaluation Method
Ping Sun, Jianbing Peng, Liwei Chen, Chang Anuniversity, An Xi, Shaanxi
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Abstract
Loess cave developed in the loess plateau is a kind of unfavorable geo-hazard,and it has become the main reason causing damage to the highway in western loess region.The formation of loess caves is not only relevant to the engineering characteristics of loess itself such as collapsibility,disintegrative etc,but to many other geologic factors such as geological structure,joint fissure,microtopography,hydrographic and climatic condition.Moreover,engineering quantities and human activities along highways are the influencing factors in loess area.Therefore the evaluation of development density zoning of loess caves is complex,random and fuzzy.Based on the distinct analysis of all the influencing factors,this paper studies the problem by fuzzy evaluation method.It is found that the evaluation result is reasonable and reliable by comparing with practical situation,so it can be applied to the prevention of cave hazards in loess area.