云南省滑坡泥石流灾害危险区划  

Hazard Zoning of Landslide and Debris Flow Disasters in Yunnan Province

作　　者：万石云[1] 李华宏[1,2] 胡娟[1] 

机构地区：[1]云南省气象台,云南昆明650034 [2]云南大学资源环境与地球科学学院,云南昆明650091

出　　处：《灾害学》2013年第2期60-64,共5页Journal of Catastrophology

基　　金：中国气象局山洪地质灾害防治气象保障工程"云南省山洪地质灾害精细化气象预报预警业务系统研究"项目资助

摘　　要：根据云南滑坡泥石流的孕灾环境和致灾因素选取海拔高程、地形坡度、年大雨日数、年暴雨日数和临界雨强作为影响因子;利用2000-2011年云南124站逐日降水资料、滑坡泥石流灾害样本和1:25万云南省地形资料,计算了这些因子相应属性对滑坡泥石流的敏感系数,并采用主成分分析法建立区划模型,对各影响因子滑坡泥石流敏感性进行了集成计算,借助于GIS工具最终完成了云南省滑坡泥石流危险区划图。区划结果表明高危险区主要分布在滇西北、滇东北和滇西南地区,与云南滑坡泥石流活动情况是相符的,并探讨了有关区域滑坡泥石流的气象预报方法。According to the Yunnan landslide and debris flow disaster environment and inducing factors,select the elevation,slope of terrain,annual heavy rain days,annual rainstorm days and critical rainfall as influence factor in this paper;using daily precipitation data of 124 stations in Yunnan during the period of 2000-2011,the landslide and debris flow cases and 1：250,000 scale Yunnan terrain data,the susceptibility coefficient between these factor attributes and landslide and debris flows was calculated,and using the principal component analysis method to establish the model of zoning,the susceptibility of landslide and debris flow of all influence factors were integrated,Finally completed the hazard zoning map of landslide and debris flow in Yunnan Province with the GIS tools.The zoning results show that high risk region is mainly distributed in the northwest,northeast and southwest of Yunnan,it is consistent with the activities of landslide and debris flow in Yunnan,and discussed about the forecast method of landslide and debris flow.

关 键 词：滑坡 泥石流 敏感系数 主成分分析 危险区划 云南省 

分 类 号：P642.22[天文地球—工程地质学] X43[天文地球—地质矿产勘探]