北京大学学报自然科学版 ›› 2022, Vol. 58 ›› Issue (5): 813-819.DOI: 10.13209/j.0479-8023.2022.046

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基于台阵资料测量高铁信号视速度的方法

殷常阳1, 温景充1, 石永祥1, 宁杰远1,2,†    

  1. 1. 北京大学地球与空间科学学院, 北京 100871 2. 河北红山地球物理国家野外科学观测研究站, 邢台 054000
  • 收稿日期:2021-05-30 修回日期:2022-05-22 出版日期:2022-09-20 发布日期:2022-09-20
  • 通讯作者: 宁杰远, E-mail: njy(at)pku.edu.cn
  • 基金资助:
    河北省地震科技星火计划(DZ20200827054)和国家自然科学基金(41874071)资助 

An Array-Based Method for Measuring Apparent Velocity of the High-Speed Rail Seismic Wavefield

YIN Changyang1, WEN Jingchong1, SHI Yongxiang1, NING Jieyuan1,2,†   

  1. 1. School of Earth and Space Sciences, Peking University, Beijing 100871 2. Hebei Hongshan National Geophysical Observation and Research Station, Xingtai 054000
  • Received:2021-05-30 Revised:2022-05-22 Online:2022-09-20 Published:2022-09-20
  • Contact: NING Jieyuan, E-mail: njy(at)pku.edu.cn

摘要:

针对运行于高架桥上高铁引发的震源, 基于对移动组合源形成的波场传播的理论分析, 提出一种利用多台互相关测量高铁波场视速度的方法。然后, 生成分层介质条件下的高铁波场合成数据, 计算信号视速度, 并通过与理论结果的对比, 验证方法的正确性。

关键词: 高铁, 移动组合源, 干涉场, 视速度

Abstract:

For the seismic source generated by the high-speed rail with viaduct, a theoretical method is proposed to measure the apparent velocity of the high-speed rail wavefield generated by a moving source set by using cross-correlation of the waves recorded by multiple stations. Furthermore, synthetic data of the high-speed rail wavefields in layered media is generated, and the apparent velocity of a phase in it is calculated. The correctness of the method is verified compared with the theoretical results. 

Key words: high-speed rail, moving source combination, interference field, apparent velocity