基于易发程度指数法的桂阳县地质灾害易发性分区研究

桂阳县是湖南省地质灾害比较严重的县份之一,以滑坡、崩塌、泥石流、地面塌陷为主的地质灾害时有发生,对当地社会经济的可持续发展乃至投资环境都构成了威胁。在现状地质灾害调查、研究的基础上,采用＂易发程度指数法＂将全县划分为高易发、中易发、低易发3个级别共8个亚区,并进行了分析评价。评价结果可直接用于地质灾害防治规划编制工作,为防灾减灾和实施地质灾害避让搬迁、监测报警以及防治工程的实施提供了科学依据。

Research on geological disaster-prone area based on susceptibility index method in Guiyang County

Guiyang County is one of the disaster-prone areas in Hunan Province.The geological hazards such as dilapidation,land-slides and mudflows occur frequently,which caused enormous threat to the development of social economy and the investment structure.In this paper,on the basis of investigations and analysis to the current geological hazards,we divide the geological disaster-prone areas into three levels of high susceptibility,medial susceptibility and low susceptibility,which belong to 8 sub-regions.Some analysis and evaluations have been done to them.The results can be used into the formation of Protection Plan to Geological hazards,and provide scientific reference to disaster prevention and mitigation,the implementation of geological disaster avoiding,moving,monitoring,alarming,and protecting.