摘要
使用遥感技术、地理信息系统技术和ArcGIS平台,分析崩塌滑坡在坡度、高程、地层岩性、距离发震断层距离和距离水系距离方面的敏感性。用信息量法,以此五因子为评价因子,对研究区进行危险性评价。结果表明,中度和高度危险的区域分别占研究区24.79%和20.48%,91%的受损房屋处于基本无危险区和轻度危险区,但仍有部分房屋处于中高度危险区,应做好安全防范工作。
At 8：02 on April 20th, 2013,an earthquake occurred in Ya＇an ,Sichuan province. As the epicenter, Longmen Township is the severely affected. In order to analyze the risk of the collapse and the landslide, this article has analyzed the sensitivities on slope gradient, elevation, lithology and stratum, the distance to the main fault and main river under the ArcGIS using the technology of remote sensing and GIS. The study area was divided into four risk zone by the method of information acquisition analysis ： no risk zone, light risk zone, moderate risk zone and higher risk zone. It is found that the moderate and higher risk zone account for 45. 27% of the study area, the higher risk zone even accounts for 20.48% . 91% of damaged hou-ses are in the no and light risk zone ,but a little part of the manufacturing housings are in the moderate and high risk zone that safety work is needed.
出处
《地质灾害与环境保护》
2014年第1期16-21,共6页
Journal of Geological Hazards and Environment Preservation
关键词
芦山地震
龙门乡
崩塌滑坡
危险性评价
Lushan Earthquake
Longmen Township
geological disaster
hazard assessment
GIS
