摘要
滑坡危险性评价是定量化评价滑坡对油罐破坏效应的重要手段和主动防灾措施,可以将油库的维护方式从盲目被动提升为有预知性的积极防护。以中国南方某覆土油库为研究对象,将现场调研结果和收集的资料相结合,根据滑坡灾害危险性评价指标,建立了覆土油库区域滑坡危险性评价指标体系:对ASTE GDEM 30 m精度数字高程模型(Digital Elevation Model,DEM)、陆地卫星Landsat 5 TM遥感影像进行处理,获得了覆土油库区域坡面分析专题图和植被覆盖专题图;由于滑坡灾害具有群发性的特点,提出利用GIS对DEM栅格转点后导入Matlab进行危险性评价运算的方法,将危险性评价结果重新导入Arc GIS进行点转栅格运算制作了基于模糊综合评判法的区域危险性评价区划图;采用VB+Assess数据库设计了覆土油库区域滑坡危险性评价管理系统,实现了用户登录、数据载入、信息查询、数据资料库、数据下载、危险性评价、系统帮助7个模块功能。该方法对于覆土油罐滑坡灾害危险性评价具有一定的参考价值。
Landslide risk assessment is an active hazard control measure and an important method to evaluate quantitatively the damage effect of landslide on oil tanks. By virtue of landslide risk assessment, the maintenance of tank farms is improved from the undirected and passive mode to the foreseeable and active mode. In this paper, a certain earth covered tank farm in South China was taken as the study object. Its on-site investigation results and collected data were combined to establish the landslide risk assessment index system for earth covered tank farms according to the landslide risk assessment index. Firstly, ASTE GDEM 30 m-precision Digital Elevation Model （DEM） and Landsat 5 TM remote sensing images are processed, and thematic maps of slope analysis and vegetation cover in earth covered tank farms are plotted. Secondly, considering the swarm nature of landslide disaster, it is proposed to turn DEM grids into points by using GIS and then import them into Matlab for risk assessment operation, and to import the risk assessment results again into the ArcGIS for point- to-grid conversion. And accordingly regional risk assessment zoning maps based on comprehensive fuzzy discrimination method are prepared. And thirdly, the risk assessment management system of earth covered tank farm is designed according to VB＋Assess database, and 7 module functions are realized, including user login, data loading, information inquiry, data base, data download, risk assessment and system help. This method can be used as the reference for the risk assessment on landslide hazard to earth covered oil tanks.
作者
黄海亮
焦光伟
秦琴
张柱柱
王亚超
张冲
HUANG Hailiang JIAO Guangwei QIN Qin ZHANG Zhuzhu WANG Yachao ZHANG Chong(Army Logistics University of PLA China Petroleum Pipeline Engineering Corporation)
出处
《油气储运》
CAS
北大核心
2017年第10期1133-1138,共6页
Oil & Gas Storage and Transportation
基金
总后军需物资油料部技术开发项目"军用油库设备设施地震灾害检测评价理论与技术研究"
BX210J026
关键词
覆土油库
DEM
TM
滑坡
危险性评价
earth covered tank farm, DEM, TM, landslide, risk assessment
