摘要
地震通常会诱发一系列地质灾害,导致巨大的人员伤亡、财产损失,造成建筑物倒塌、交通陷入瘫痪,尤其在复杂艰险山区,地震触发的地质灾害会给交通带来更为巨大的威胁。若能对地震地质灾害进行早期识别,则能减轻损失。因此,本文利用Newmark法及永久位移预测模型进行地震滑坡危险性评价,使用GIS进行地图数据提取计算并且编制地震滑坡灾害地图。并基于DDA(非连续变形分析)对单体滑坡进行模拟,分析滑坡灾害可能造成的冲击力和滑动距离、速度等。该研究方法可用于复杂艰险山区陆地交通地震地质灾害的早期识别以及震后风险评价,对减轻地震地质灾害造成的伤亡损失具有重大的意义。
Earthquakes usually induce a series of geological disasters,causing great casualties and property losses,causing buildings to collapse and traffic to be paralyzed.Especially in complex and difficult mountainous areas,geological disasters triggered by earthquakes will bring greater threats to traffic.If early identification can be realized for seismic geological hazards,losses are mitigated.Therefore,in this paper,Newmark method and regression models of coseismic landslide permanent displacement are used to evaluate the seismic and landslide risk,and ArcGIS is used to extract and calculate the map data and compile the seismic and landslide disaster map.Based on DDA(non-continuous deformation analysis),the individual landslide is simulated,and the impact force,sliding distance and speed caused by the landslide disaster are analyzed.This method can be used in the early identification and risk assessment of earthquake geological disasters caused by land transportation in complex and difficult mountainous areas,which has great significance to mitigate casualties and losses caused by earthquake geological disasters.
作者
张迎宾
柳静
ZHANG Yingbin;LIU Jing(Southwest Jiaotong University,Chengdu 610031,China)
出处
《高速铁路技术》
2018年第S02期33-37,共5页
High Speed Railway Technology
关键词
地震地质灾害
灾害识别
风险评价
滑坡灾害地图
DDA
seismic geological disaster
disaster identification
risk assessment
landslide disaster map
DDA
作者简介
张迎宾(1983-),男,副教授。
