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

详细信息

收稿日期: 2017-04-01

修回日期: 2017-08-22

刊出日期: 2018-06-30

RISK ASSESSMENT ON THE GEOHAZARDS IN ALPINE AND GORGE REGION OF EASTERN TIBET: A Case Study of Gonjo County

More Information

Received Date: 01 April 2017

Revised Date: 22 August 2017

Publish Date: 30 June 2018

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.
- 地质灾害 /
- 层次分析法 /
- GIS /
- 危险性评价 /
- 西藏
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.
- geohazard /
- analytic hierarchy process (AHP) /
- GIS /
- risk assessment /
- Tibet