RISK ASSESSMENT ON THE GEOHAZARDS IN ALPINE AND GORGE REGION OF EASTERN TIBET: A Case Study of Gonjo County
ZHU Jin-shou1, DENG Hui2, YUAN Quan3, SHEN Juan1, ZHOU Jin1, JIN Jie1
1 Qinghai Bureau of Geological Survey, Xining 810001, China; 2 Key Laboratory for Geospatial Information Technology of Ministry of Land and Resources (Chengdu University of Technology), Chengdu 610059, China; 3 Tibet Institute of Geological Survey, Lhasa 850000, China
Abstract: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.
朱进守, 邓辉, 苑泉, 沈娟, 周瑾, 靳洁. 藏东高山峡谷地带地质灾害危险性评价——以西藏贡觉县为例[J]. 地质与资源, 2018, 27(3): 272-278.
ZHU Jin-shou, DENG Hui, YUAN Quan, SHEN Juan, ZHOU Jin, JIN Jie. RISK ASSESSMENT ON THE GEOHAZARDS IN ALPINE AND GORGE REGION OF EASTERN TIBET: A Case Study of Gonjo County. GEOLOGY AND RESOURCES, 2018, 27(3): 272-278.