基于区域性地震安全性评价钻孔数据的三维地质模型建立研究  

Research on 3D Geological Model Based on Borehole Data of Regional Seismic Safety Evaluation

作　　者：李万里 杨歧焱 杜睿 LI Wan-li;YANG Qi-yan;DU Rui(Chengde Earthquake Monitoring Center Station,Chengde 067000,China;Hebei GEO University,Shijiazhuang 050031,China)

机构地区：[1]承德地震监测中心站,河北承德067000 [2]河北地质大学,河北石家庄050021

出　　处：《河北地质大学学报》2024年第4期43-48,共6页Journal of Hebei Geo University

摘　　要：论文主要以区域性地震安全评价项目钻孔数据为依托,对地下深度100 m以浅地层依据波速柱状图的波速差异分层和研究区的钻孔数据进行建模,对100~600 m的地层依据研究区附近的钻孔进行分层并建模,利用克里金插值的方式来解决钻孔数据较少的情况,并对克里金插值中的变异函数类型进行了分析。利用克里金插值技术和SKUA软件进行快速三维建模,将获得的构造模型进行切剖图与联剖图进行对比,可视化效果较好,该模型可用于地震波正演模拟,得到地震响应特征,建模方法较为简便,有助于地质技术人员认识和分析工程地质体。Based on the borehole data of the regional seismic safety assessment project,this paper models the wave velocity difference stratification of shallow strata with an underground depth of 100 m according to the wave velocity histogram and the borehole data of the study area,stratifies and models the strata of 100~600 m according to the previous controlled boreholes near the study area,and uses kriging interpolation to solve the situation of less borehole data,and analyzes the variogram type in kriging interpolation,and then verifies the correctness of the model by seismic wave forward modeling.The model can be used for seismic wave forward simulation,and the seismic response characteristics are obtained,and the modeling method is relatively simple,which is helpful for geological technicians to understand and analyze the engineering geological body.

关 键 词：地震安全性评价 钻孔数据 克里金插值 SKUA软件 

分 类 号：P631[天文地球—地质矿产勘探]