辽宁省海城市地震灾害预评估精细化方法研究
Research on the Refined Method of Earthquake Disaster Pre-assessment in Haicheng,Liaoning
王万宁 1孔祥雪 1于浩 1张文静 1田雨佳1
作者信息
摘要
辽宁省海城市地震灾害预评估精细化方法研究基于30弧秒格网数据代替现有以区县一级行政区为基本空间单元的数据统计方式作为预评估基础评估单元,对海城市格网化后,提取有效像元并选取抽样点进行建筑物结构类型实地调研,推算每个像元内不同建筑物结构类型面积,以此计算人口数量并验证数据准确性.在设定地震下快速高效产出预先模拟的计算结果.结果发现,精细化后的预评估结果更接近地理情况的真实分布现状,可有效识别高风险区并根据优先等级辅助形成更精准的处置建议.
Abstract
The research on the refined method of earthquake disaster pre-assessment in Haicheng City,Liaoning Province is based on the 30 arcsecond grid data instead of the existing statistical data of district and county level administrative region as the basic spatial unit of pre-assessment.After the grid of Haicheng City,the effective pixels are extracted,and sampling points are selected for field investigation of building structure types.The area of different building structure types in each pixel is calculated to calculate the population and verify the accuracy of the data.And under the set earthquake,the refined pre-evaluation results can be produced quickly and efficiently.It can effectively identify high risk areas and assist the government to form more accurate disposal recommendations according to the priority level.
关键词
精细化/预评估/建筑物损失/人员伤亡/地震灾害/海城市Key words
Refinement/Pre-assessment/Building damage/Casualties/Earthquake disasters/Haicheng city引用本文复制引用
基金项目
辽宁省地震局青年项目(2023)(LZ202304Q)
出版年
2024
NETL
NSTL
万方数据