摘要
在西藏贡觉县地质灾害调查的基础上,开展研究区内的地质灾害危险性评价.根据研究区地质地理环境特征,优选出7个评价因子:坡度、历史地质灾害密度、工程岩组、线性构造密度、植被覆盖度、河网密度、年均降雨量,并建立分级标准.利用GIS技术对空间数据的采集和分析功能,结合数理统计的方法原理,对研究区进行了地质灾害危险性定量评价,揭示区内地质灾害空间分布规律.
The risk assessment is carried out based on the geohazard survey in Gonjo County of Tibet. Seven assessment factors,namely slope,historical geohazard density,engineering rock assemblage,linear structure density,vegetation coverage,drainage density and average annual rainfall,are optimized and grading standards are established according to the geological and geographical features. The GIS technology is used to collect and analyze spatial data for quantitative risk assessment. Combined with the principle of mathematical statistics, the spatial distribution of geohazards in the study area is revealed.
作者
朱进守
邓辉
苑泉
沈娟
周瑾
靳洁
ZHU Jin-shou;DENG Hui;YUAN Quan;SHEN Juan;ZHOU Jin;JIN Jie(Qinghai Bureau of Geological Survey,Xiling 810001,Chiina;Key Laboratory for Geospatial Information Technology of Ministry of Land and Resources（Chengdu University of Technology）,Tibet Institute of Geological Survey,Chengdu 610059,China)
出处
《地质与资源》
CAS
2018年第3期272-278,共7页
Geology and Resources
基金
国家自然科学基金"川西藏区矿产资源开发的地质生态环境承载力研究"(编号40972225)
国土资源部地学空间信息技术重点实验室开放基金"西南山区深切河谷地带生态地质环境承载力评价"(项目编号KLGSIT2016-06)
关键词
地质灾害
层次分析法
GIS
危险性评价
西藏
geohazard
analytic hierarchy
process （AHP）
GIS
risk assessment
Tibet
