摘要
地面坍塌灾害具有突发性和隐蔽性等特点,易造成较大生命财产损失。为了全面评估地面坍塌的危险性分区评价,选取深圳市为研究区,从自然因素和人类活动两个方面选取与地面坍塌地质灾害密切相关的6个评估因子构建了深圳市地面坍塌地质灾害易发性评价指标体系,并采用层次分析法分别计算了各个评估因子的标度分级和取值,结合GIS的空间分析功能进行了深圳市地面坍塌灾害易发性评价,并对评价结果进行了验证。然后选取深圳市大厦、学校以及政府机构3个因素,对深圳市地面坍塌危害性进行分区评价,进而获得深圳市地面坍塌危险性分区。结果表明深圳市发生地面坍塌的极高危险区主要集中在罗湖区和福田区,另外光明区和南山区也有部分极高危险区分布,而极高危险位置主要还是位于行政道路和人行道区域。这些区域与2016—2020年间发生地面坍塌案例数较多的区域基本一致,因此可采用层次分析法开展深圳市地面坍塌危险性分区评价。
Ground collapse disaster has the characteristics of sudden and concealment,which is easy to cause great loss of life and property.To comprehensively evaluate the risk zoning evaluation of the ground collapse,Shenzhen is selected as the study area,and six evaluation factors closely related to the ground collapse geological disasters are selected from two aspects of natural factors and human activities to construct the evaluation index system of the ground collapse geological disasters in Shenzhen.Afterwards,the scale classification and value of each evaluation factor are calculated by analytic hierarchy process.Combined with the spatial analysis function of GIS,the susceptibility of the ground collapse disaster in Shenzhen is evaluated,and the evaluation results are verified.Subsequently,three factors of Shenzhen buildings,schools and government agencies are selected to evaluate the hazard of the ground collapse in Shenzhen,and then the risk zoning of the ground collapse in Shenzhen is obtained.The results show that the extremely high risk areas of the ground collapse in Shenzhen are mainly concentrated in Luohu district and Futian district.In addition,both Guangming district and Nanshan district have some extremely high risk areas.Overall,the extremely high risk zones are mainly located in administrative roads and sidewalks.These zones are basically consistent with those with a large number of ground collapse cases from 2016 to 2020.Therefore,the analytic hierarchy process can be used to evaluate the risk zoning of the ground collapse in Shenzhen.
作者
魏会龙
施秋华
周金文
刘懿俊
沈翔
WEI Huilong;SHI Qiuhua;ZHOU Jinwen;LIU Yijun;SHEN Xiang(Geological Bureau of Shenzhen,Shenzhen 518023,China;Real Estate Assessment Center of Shenzhen,Shenzhen 518040,China;Shenzhen Geo-environmental Monitoring Center,Shenzhen 518040,China)
出处
《中国矿业》
2021年第S02期110-116,共7页
China Mining Magazine
关键词
深圳市
地面坍塌
层次分析法
易发性评价
危险性评价
Shenzhen city
ground collapse
analytic hierarchy process
susceptibility evaluation
risk assessment
