基于GIS技术的三峡库区滑坡涌浪灾害易损性可视化研究  

Visualized Analysis of Surge Vulnerability by Landslides Based on GIS in Three Gorges Reservoirs

作　　者：纪虹[1,2] 司鹄[3,2] 

机构地区：[1]重庆大学煤矿灾害学及控制国家重点实验室,重庆400030 [2]重庆大学资源及环境科学学院,重庆400030 [3]重庆大学 煤矿灾害学及控制国家重点实验室,重庆400030

出　　处：《中国安全科学学报》2013年第9期166-171,共6页China Safety Science Journal

基　　金：国家自然科学基金委创新研究群体基金资助(50921063);国家自然科学基金资助(51274259);科技部重大专项(2011BAK07B03)

摘　　要：为研究滑坡涌浪灾害对库岸受灾面积的影响,以三峡库区为例,从致灾因子、孕灾环境和承灾体3方面,研究滑坡体入水产生的涌浪带来的安全风险,构建区域滑坡涌浪易损性评价指标体系及计算模型。基于地理信息系统(GIS)技术,建立三峡库区滑坡涌浪在时间和空间上的易损性可视化分析技术流程,并将其应用于滑坡灾害分布较多的重庆云阳县,计算其易损性分布,进行可视化分析。在此基础上,对8月和1月易损性局部分布进行对比分析。结果表明,8月较1月,Ⅰ级易损性区域面积增加45倍,Ⅱ级易损性区域面积增加2.2倍,Ⅲ级易损性区域面积增加1.1倍,形象地表明了高易损区域的影响范围。To study effects of a surge caused by landslides at reservoir bank on affected area, taking Three Gorges Reservoir as a research object, in respect of hazard factor, environment inducing hazard, and bodies bearing hazard, the safety risk of the surge caused by landslides was researched, meanwhile, the vulnerability index system and calculation model of research area were established. Based on the GIS technology, the technique process of the surge vulnerability in time and space was established, and applied to Yunyang county in Three Gorges reservoir region, in which more landslides disasters may occur, calcu- lating vulnerability distribution in time-space and making visualization analysis. On this basis, vulnerabili- ty local distribution of the surge by landslides in August and January was analyzed and compared. The results show that level I area of vulnerability in August is 46 times as great as that in January, level 11 ar- ea of vulnerability 3.2 fold, and level m area of vulnerability 2.1 fold, visually indicating the influencing range of the high vulnerability region.

关 键 词：滑坡 涌浪 地理信息系统(GIS) 时空可视化 易损性评估 

分 类 号：X915.5[环境科学与工程—安全科学]