基于地理国情数据地质灾害点危险性定量评价——以鹰潭市为例  

Quantitative Risk Assessment of Geological Disaster Point Base on Data of Geographical Conditions——Take Yingtan city as an example

作　　者：江丽[1] 江媛媛[1] 邹瑜[2] 郭松[2] 

机构地区：[1]东华理工大学地球科学学院,江西南昌330013 [2]江西应用技术职业学院,江西赣州341000

出　　处：《城市勘测》2016年第2期151-156,共6页Urban Geotechnical Investigation & Surveying

摘　　要：地质灾害是一种破坏性的地质事件,严重威胁人类的生命财产和生存环境,制约着人类的可持续发展。文章基于地统计学理论和地质灾害群发性和区域性的特点,选取区域影响因子,采用层次分析法对鹰潭市内的地质灾害点进行危险性分级研究,并利用GIS制图技术制作危险性分级图。研究结合地理国情普查数据和当地的地质灾害资料,从致灾和受灾两个方面进行分析,并引入了社会经济要素作为评价因子。研究结果表明在:1 50 m^500 m高程段;215°~25°坡度段;3道路200 m内;4河流100 m内;5植被覆盖度低于0.65的区域内是地质灾害高发的区域。其中"道路200 m内"是代表人类工程活动,其余代表的是自然因素。文章还基于地理国情普查的社会经济要素数据,分析了地质灾害点威胁的数量和范围,充分发挥地理数据在社会经济建设中的作用。Geological disaster is a kind of destructive geological event, Serious threat to human life and property and living environment and Restricting the sustainable development of human beings. This paper is based on the theory of statistics and the characteristic of Mass and regional with geologic hazard, Selection of regional influence factors, Risk classification of geological disasters in Yingtan City by AHP. Production risk classification map by GIS. Research corn- bined with geographical conditions census data and local geological hazard data, Analysis from two aspects of Reason and result and the social economic factors were introduced as the evaluation factors. Research results show that, in this range 50-500m Altitude, 15° -25 °Slope, 200 meters around the road, 200 meters around the rivers, （~）NDVI below 0.65 ,is a high incidence of geological disasters. Among them the road is representative of human engineering activities, other is nature. The more important is this paper based on Social and economic factors data from the census of geograph- conditions, analysis of the number and range of the threat of geological disasters, Make full use of geographical data in the social and economic development

关 键 词：地质灾害 GIS 地理国情 

分 类 号：P642.4[天文地球—工程地质学] P208.1[天文地球—地质矿产勘探]