%0 Journal Article
%T 岷县—漳县6.6级地震极震区场地覆盖层厚度探测及三维地形模型建立<br>Survey of Overburden Thickness of Sites and Establishment of Three-Dimensional Terrain Model in the Meizoseismal Area of Minxian-Zhangxian MS6.6 Earthquake
%A 李璐
%A 吴志坚
%A 李瑞宽
%A 赵涛
%J 地震工程学报
%D 2018
%R 10.3969/j.issn.1000-0844.2018.06.1191
%X 2013年7月22日岷县漳县MS6.6地震的震后科学考察发现，极震区局部场地覆盖层厚度和地形条件对地震动有明显放大效应。利用伺服速度地震仪对此次地震极震区场地进行高密度地脉动观测，获得该区不同场地的卓越频率，运用频谱分析法得到该区场地覆盖层厚度分布。基于在该区进行的人机航飞遥测，获取地形地貌数据，通过制作表层和基岩层DEM数据，由Rhino进一步处理生成地形模型，实现真实地形在通用有限元软件中的三维模型的建立。<br>Scientific surveys conducted after the Minxian-Zhangxian MS6.6 earthquake reveal that the overburden thickness and topographic conditions at local sites in its meizoseismal area have a significant amplification effect on the ground motion. Using a servo velocity seismograph, we conducted a high-density microtremor survey in sites around the meizoseismal area, and obtained the predominant frequencies of the various sites. We used the frequency spectrum analysis method to obtain the overburden thickness distribution of the sites, and investigated the unmanned aerial vehicle telemetry of the area to obtain topographic and geomorphic data. By producing surface and bedrock data from the digital elevation model, we used the Rhino 3D modeler to further process and establish a terrain model and then generated a 3D model of the actual terrain using general finite element software.
%K 岷县漳县地震
%K 地脉动
%K 覆盖层
%K 人机遥测
%K 三维地形建模&lt
%K br&gt
%K Minxian-Zhangxian earthquake
%K microtremor
%K overburden
%K manned aerial vehicle telemetry
%K 3D terrain modeling
%U http://dzgcxb.ijournals.cn/ch/reader/view_abstract.aspx?file_no=20180607&flag=1