摘要
深圳市在快速城市化过程中形成了大量人工边坡,这些边坡在强降雨及人为活动干扰下具有发生崩塌和滑坡的潜在危险性,给当地人民群众生命财产安全带来较大威胁。基于深圳市斜坡调查结果,选择地层岩性、地质构造、地形、植被、水文、人类活动5个因子37个变量,构建了深圳市滑坡危险性区划评价指标体系。基于信息量模型,利用GIS空间分析工具,完成了深圳市滑坡危险性区划工作,并利用野外调查第一手资料对危险性区划进行了验证。结果表明,深圳市滑坡危险区面积为12.7 km2,占评价总面积的0.67%;较危险区面积为676.9 km2,占评价总面积的35.8%;较稳定区面积为1 040.5 km2,占评价总面积的55%;稳定区面积为160.1 km2,占评价总面积的8.5%。
More and more human-cutting slopes have been developed in Shenzhen City during the past two decades out of rapid urbanization. These slopes are very dangerous to human being in case of human intervention or heavy rain. An index system of landslide risk zonation of Shenzhen is built based on the results of Shenzhen slope investigation. The 5 factors and 37 variables index system includes formation lithology,geological structure,terrain,vegetation,hydrology and human activity. Then landslide risk zonation of Shenzhen is carried out based on GIS spatial analysis and information content model. Finally,the zonation is verified based on landslide field investigation data. Results show the zonation are scientific and rational and can be served as the reference and guidance of Shenzhen landslide warning.
出处
《灾害学》
CSCD
北大核心
2014年第1期67-74,共8页
Journal of Catastrophology
基金
国家自然科学基金(40701135)
环保公益性行业科研专项(2011467026)
关键词
广东深圳
滑坡
危险性区划
信息量
GIS
Shenzhen of Guangdong Province
landslide
risk zonation
information content
GIS
