苏南地区地质灾害区划评价

Regionalization and assessment of the geological hazard areas in South Jiangsu

苏南是江苏省经济发展水平较高的地区,也是全国人口密度较大、经济较发达和城镇化程度较高的地区,地质灾害是影响苏南快速发展的重要因素之一。研究采用层次分析法,尝试以重要性、危害性和易发性3个要素作为指标建立评价体系,对苏南地区进行地质灾害区域划分,并在区划基础上考虑社会经济因素对地质灾害危害程度的影响,将苏南地区划分出地面沉降重点防治区和滑坡塌陷重点防治区2个重点防治区,其他区域为一般防治区。评价结果对于苏南地区地质灾害防治工作具有较大的参考价值。

South Jiangsu is the most developed region in Jiangsu Province, and also the region with the highest population and urban density in China. Geological hazard is one of the important factors affecting the rapid development of South Jiangsu. The authors adopted the analytic hierarchy process (AHP), and established an assessment system by using importance, harmfulness and vulnerability as indexes to classify geological hazard areas in South Jiangsu. On the basis of regionalization, the authors estimated the influence of social and economic factors on the harmfulness of geological hazard. South Jiangsu was divided into two key prevention and control areas--ground subsidence area and landslide collapse area, and the other areas were general prevention and control areas. The assessment results have great reference for the prevention and control of geological hazard in South Jiangsu.