摘要
南山风景名胜区是重庆市主城区地质灾害比较发育的区域。基于现场调查和观测,遴选出地形坡度、地层岩性组合、地质构造、堆积体厚度、地下水和工程活动等6个致灾影响因子,并采用专家系统法进行指标赋值,采用AHP法确定指标权重;建立了地质灾害危险性因子评价模型,据此基于GIS平台将南山风景名胜区地质灾害危险性分为轻危险区、中危险区、高危险区和极高危险区,所占面积比例分别为65.2%、18.1%、13.2%和3.5%,与实际情况基本相符。研究成果可为风景区国土资源综合开发与环境保护提供一定科学依据。
Nanshan scenic spot is the area where geological hazard is rather developed in the urban of Chongqing. Based on field observation and investigation, six risk factors resulting in geological hazard includes： terrain slope, formation lithology combination, geological structure, the thickness of accumulation body, groundwater and engineering activities. The value assignment of index is obtained through expert system, and the weight of index is determined by analytical hierarchy process （AHP） ; the risk zoning assessment model of geological hazard is established. Hereby, based on GIS platform, the risk zon- ing of geological hazard of Nanshan scenic spot is identified, including slight hazard area, medium hazard area, high hazard area, extremely hazard area. They take up 65.2% , 18.1%, 13.2% and 3.5% respectively in area; and these data are consistent with those of actual situation. The research results can provide certain scientific basis for the comprehensive de- velopment of land and resources as well as the environmental protection in scenic spot.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
2010年第1期93-97,137,共6页
Journal of Chongqing Jiaotong University(Natural Science)
基金
国家自然科学基金项目(50678182)
重庆市重点自然科学基金项目(2008BA0015)
