摘要
基于纵横波产生机理并结合高铁列车及铁轨结构,本文给出了高铁列车产生地震纵波及横波震源(点源及等效源)子波的时间函数;通过实际高铁地震数据及合成高铁地震数据分析,验证了高铁地震震源子波时间函数的合理性;在高铁列车匀速、加速及减速运行情况下,利用高铁地震点源子波合成记录分析了高铁地震震源子波的频谱特征,为实际高铁地震数据处理解释奠定了良好的基础.
Based on the generation mechanism of P- and S-waves and structures of high-speed-trains and high-speed-railway,this paper presents a high-speed-train seismic wavelet time function of P- and S-wave sources (point source and equivalent source) by a high-speed-train.Spectrum analysis of actual and synthetic data verifies this function is reasonable.Using synthetic records of wavelets by a point source,this paper analyzes the features of spectra of these wavelets in the cases of uniforMSpeed,acceleration and deceleration,providing a basis for processing and interpretation of real data.
作者
张固澜
何承杰
李勇
段景
王婷一
詹熠宗
杜皓
罗帆
ZHANG GuLan;HE ChengJie;LI Yong;DUAN Jing;WANG TingYi;ZHAN YiZong;DU Hao;LUO Fan(School of Geoscience and Technology,Southwest Petroleum University,Chengdu 610500,China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu 610500,China;The Joint Research Group of High-Speed Rail Seismology,Beijing 100029,China)
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
2019年第6期2344-2354,共11页
Chinese Journal of Geophysics
基金
国家自然科学基金面上项目(41874168)
四川省杰出青年科技人才计划(2019JDJQ0053)联合资助
关键词
高铁地震
震源子波
点源
等效源
时间函数
验证
High-speed-train seismic
Source wavelet
Time function
Point source
Equivalent source
Verify