摘要
在充分调查万州区地质环境及滑坡灾害基本特征的基础上,根据资料的有效性和可获得性,选取地表高程、坡度、地层岩性、地质构造、土地利用类型、区域交通建设和河流侵蚀冲刷7个影响滑坡发生的因素作为评价指标,采用AHP法确定各个指标的权重并建立滑坡灾害危险性指数模型,通过GIS系统的空间分析功能进行栅格运算,得出研究区滑坡灾害危险性分区。采用上述指标和方法将重庆市万州区的滑坡灾害划分为极高危险区、高危险区、中危险区、低危险区和极低危险区,划分结果符合该区滑坡灾害的实际情况。
On the basis of surveying the geological environment and learning basics characteristics of landslides in Wanzhou region sufficiently, considering the validity and availability of obtained data, authors selected seven factors that influence the occurrence of land-slides as evaluation indices, including surface elevation, slope gradient, hthology, geological structure, land use type, regional traffic constructing and river erosion. Analytic Hierarchy Process （AHP） is used to determine the weight of those indices, and build model of landslide hazard index. After grid data are calculated in the use of spatial analysis function of GIS, landslide hazard zoning of the study area is portrayed. According to the seven evaluation indices, and AHP mentioned above, landslide hazard can be divided into five type regions as follows： extremely high-hazard, high-hazard, medium-hazard, low-hazard and very low-hazard. The result indicates that the landslide hazard zoning corresponds with the actual situation of landslides in the study area.
出处
《地质通报》
CAS
CSCD
北大核心
2008年第11期1875-1881,共7页
Geological Bulletin of China
基金
国家科技支撑计划项目(编号:2006BAC04B05)资助。
关键词
滑坡
危险性评价
层次分析法
重庆市万州区
landshde
hazard evaluation
analytic hierarchy process
Wanzhou District, Chongqing City
