摘要
为了对滑坡、泥石流广为发育的丽江市古城区地质灾害危险性进行综合评价,通过建立坡度、地层岩性、距道路距离等9个评价指标,利用层次分析法与信息量模型得到各指标权重值及信息量值,分析发现:研究区内极高危险区面积88.10 km^(2),共发育灾害点66处;高危险区面积356.91 km^(2),共发育灾害点116处;中危险区面积54 km^(2),共发育灾害点54处;低危险区面积260.42 km^(2),共发育灾害点11处.研究结果可为古城区地质灾害防治提供理论和方法依据.
In order to comprehensively evaluate the risk of geological disasters in Gucheng district of Lijiang city,where land⁃slides and mudslides are widely developed,nine evaluation indicators such as slope,stratigraphic lithology and distance from the road are established,and the weight values and information values of each index are obtained by using the analytic hierarchy meth⁃od and the information volume model.It is found that the extremely high risk area in the study area is 88.10 km^(2)with 66 co-de⁃velopmental disaster points;the high risk area is 356.91 km^(2)with 116 co-developmental disaster points;the medium risk area is 54 km^(2)with 54 co-developmental disaster points;the low-risk area is 260.42 km^(2)with 11 co-developmental disaster points.The research results can provide a theoretical basis for the prevention and control of geological disasters in Gucheng district of Liji⁃ang city.
作者
范诗铃
刘汉湖
李金豪
FAN Shiling;LIU Hanhu;LI Jinhao(Earth Sciences Academy,Chengdu University of Technology Chengdu,Sichuan 610051,China)
出处
《宜宾学院学报》
2022年第6期60-66,共7页
Journal of Yibin University
基金
国家自然科学基金项目(41102225)。
关键词
地质灾害
层次分析法
信息量法
危险性评价
古城区
丽江
geological hazard
analytic hierarchy process
information value method
risk assessment
Gucheng district
Lijiang
