则木河断裂带(普格段)地质灾害发育规律及易发性评价  

Distribution and susceptibility assessment of geological hazards in Zemuhe fault zone(Puge section)

作　　者：李光辉 铁永波 白永建[2] 熊晓辉[2] LI Guanghui;TIE Yongbo;BAI Yongjian;XIONG Xiaohui(China University of Geosciences(Wuhan)Institute of Geophysics&Geomatics,Wuhan,Hubei 430074,China;Chengdu Geological Survey Center,China Geological Survey,Chengdu,Sichuan 610081,China)

机构地区：[1]中国地质大学(武汉)地球物理与空间信息学院,湖北武汉430074 [2]中国地质调查局成都地质调查中心,四川成都610081

出　　处：《中国地质灾害与防治学报》2022年第3期123-133,共11页The Chinese Journal of Geological Hazard and Control

基　　金：中国地质调查局地质调查项目(DD20221746);国家自然科学基金项目(U20A20110-01)。

摘　　要：以则木河断裂带(普格段)为研究区,分析研究区的地质灾害控制效应以及发育规律;选取海拔高程、坡向、坡度等7个评价因子构建评价指标体系,运用确定性系数模型与信息量模型耦合的加权信息量模型,通过ArcGIS进行地质灾害易发性评价。结果显示,研究区地质灾害发育具有断层距离效应、地层效应以及高程和坡度微地貌效应;极高易发区、高易发区、中易发区和低易发区的面积分别为46.75 km^(2)、123.78 km^(2)、215.73 km^(2)、285.34 km^(2),面积占比分别为6.96%、18.43%、32.12%、42.49%。研究结果对指导则木河断裂带地区以及同类区域的国土空间规划与地灾防治等方面具有重要现实意义。Taking Zemuhe fault zone(Puge section)as the study area,the control effect and development law of geological disasters in the study area are analyzed;Seven evaluation factors such as elevation,aspect and slope from fault are selected to construct the evaluation index system.The weighted information model coupled with deterministic coefficient model and information model is used to evaluate the susceptibility of geological disasters through ArcGIS.The results show that the development of geological hazards in the study area has fault distance effect,elevation and slope micro geomorphic effect and stratigraphic effect;The areas of extremely high,high,medium and low prone areas are 46.75 km^(2),123.78 km^(2),215.73 km^(2)and 285.34 km^(2)respectively,accounting for 6.96%,18.43%,32.12%and 42.49%respectively.The research results have important practical significance for guiding the land spatial planning and geological disaster prevention in Zemuhe fault zone and similar regions.

关 键 词：地质灾害 加权信息量模型 易发性评价 则木河断裂带 

分 类 号：P642.2[天文地球—工程地质学]