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作 者:姚玉增[1] 任群智[1,2] 李仁峰 温守钦[1] 赵玉山[1]
机构地区:[1]东北大学地质系,沈阳110004 [2]辽宁冶金地勘局地质勘查研究院,鞍山114002
出 处:《水文地质工程地质》2010年第2期130-134,138,共6页Hydrogeology & Engineering Geology
基 金:辽宁省"十五"重点攻关项目"辽宁省北部;西部地质灾害分布规律;演化趋势及防治对策研究"(2001230008);国家"十一五"科技支撑计划重点项目(2006BAC04B01)资助
摘 要:凌源市是辽西地区山地地质灾害危害较为严重的区域。在GIS技术支持下,选取地形、岩性、构造、降雨、道路、土地利用等6个因素作为评价指标,根据已发生的68个山地地质灾害点计算了各指标因子的敏感性,分别采用层次分析法、信息量法和统计量法确定了各指标的权重,利用因子叠置法对危险性进行了综合评价。结果表明层次分析法在该区山地地质灾害危险性评价中效果良好。该研究对相似地区山地地质灾害危险性区划具有一定的借鉴意义。Lingyuan City lies in the west of Liaoning Province where mountain geological disasters frequently occur. Based on GIS, six indices, i. e. , topography, lithology, structure, rainfall, land-use type and road are selected for the assessment of geological disasters. The sensitivity of various indices are based on 68 historically happened disasters, and the weights of the factors are determined by information models, statistical models and analytic hierarchy process (AHP) separately. The synthetic appraisal of mountain disasters in Lingyuan City is carried out by factor overlay method. The results indicate that the AHP is obviously advantageous in the probability assessment of regional mountain disasters. The research is helpful in the zonation of mountain disasters assessment of similar areas.
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