摘要
在丹巴滑坡灾害调查的基础上,以丹巴县的滑坡灾害为研究对象,统计分析了影响滑坡灾害发生的影响因素,以工程地质岩组、坡向、地表起伏度、断裂构造、河流和坡度为6个基本判别因子,建立基于GIS的信息量模型对丹巴县进行滑坡灾害易发性评价,并将评价结果划分为3个等级:低易发区、中易发区、高易发区。结合野外调查成果,对评价结果的可信度进行检验分析,评价结果与实际滑坡灾害发生情况基本吻合,研究结果可为丹巴县减灾防灾提供依据。
The landslide hazard in Danba Country was taken as the research object, and based on the investigation of the landslide hazard in Danba, the statistical analysis of the factors affecting the development of landslide hazard was made. Engineering geological rock group, aspect, elative elevation, fracture structure, river and slope were selected as basic discriminant factors. The evaluation index system of susceptibility assessment based on GIS and information value model of Danba was divided into 3 grades: low susceptible, moderate susceptible and high susceptible. According to the field survey results, the reliability of the evaluation results is tested and analyzed. The results are basically consistent with the actual landslides, and the results can provide data support for disaster reduction and prevention in Danba.
作者
葛凯波
陈兴长
关辉
赵静静
GE Kaibo;CHEN Xingzhang;GUAN Hui;ZHAO Jingjing(School of Environment and Resources, Southwest University of Science andTechnology, Mianyang 621010, Sichuan, China)
出处
《西南科技大学学报》
CAS
2019年第2期32-38,50,共8页
Journal of Southwest University of Science and Technology
基金
国家自然科学基金面上项目(41772343)
关键词
信息量模型
滑坡灾害
易发性评价
GIS
丹巴县
Information value mode
Landslide hazard
Susceptibility assessment
GIS
Danba Country
