基于GIS的铜川市耀州区地质灾害危险性评价  

Hazard assessment of geological disaster in Yaozhou district of Tongchuan City based on GIS

作　　者：潘网生[1,2,3] 卢玉东[1,2] 郭晋燕[1,2] 

机构地区：[1]长安大学环境科学与工程学院,西安710054 [2]长安大学旱区地下水文与生态效应教育部重点实验室,西安710054 [3]西安思源学院管理学院,西安710038

出　　处：《南水北调与水利科技》2015年第1期72-77,共6页South-to-North Water Transfers and Water Science & Technology

基　　金：国家自然科学基金项目(40372114)

摘　　要：通过对铜川市耀州区120处滑坡、66处崩塌,2处小规模泥石流现场调查及资料的收集整理与分析,分别构建滑坡、崩塌及泥石流的地质灾害危险性评价指标体系并通过GIS技术和信息量模型量化指标,同时综合考虑指标信息量排序结果与灰色关联度分析结果最终确定指标权重,得到该区滑坡、崩塌及泥石流的危险性等级区划图。研究结果表明:基于GIS的分灾害类型的危险性评价充分尊重了研究区地质灾害类型自身发育特点和规律,为地质灾害分类管理提供了科学依据,使得当地的地质灾害预防与控制工作更具针对性、时效性和科学性,且具有向类似黄土区推广的价值。Through the field investigation and data collection of 120 landslides,66collapses,and 2small-scale debris flows in Yaozhou district of Tongchuan City in Shaanxi Province,the hazard assessment index systems of geological disasters of landslide,collapse,and debris flow were developed.The indexes were quantified using the GIS technology and information amount model,and the index weights were determined by the information amount ranking results and grey relational analysis,which can generate the hazard grade zoning maps of landslide,collapse,and debris flow in the study area.The results showed that the hazard assessment of distinction disaster type based on GIS follows the development characteristics and laws of different disasters,which can provide the scientific basis for the classification management of geological disasters in Yaozhou district of Tongchuan.Accordingly,the prevention and control measures of local geological disasters can be more pertinent,prescriptive,and scientific,and the method can be applied to the loess area.

关 键 词：黄土 分灾种 危险性评价 信息量模型 GIS 灰色关联度 

分 类 号：P642[天文地球—工程地质学]