张唤兰^1,2,,
王保利^3,,,
宁杰远^4,6,
李幼铭^5,6
1. 西安科技大学地质与环境学院, 西安 710054
2. 陕西省煤炭绿色开发地质保障重点实验室, 西安 710054
3. 中煤科工集团西安研究院有限公司, 西安 710049
4. 北京大学地球与空间科学学院, 北京 100871
5. 中科院地质与地球物理研究所, 北京 100029
6. 高铁地震学联合研究组, 北京 100029

基金项目: 国家自然科学基金（41674135，51808444）和陕西省煤炭绿色开发地质保障重点实验室基础研究计划项目（MTy2019-11）联合资助


详细信息

作者简介: 张唤兰, 女, 1981年生, 主要从事地震数据处理方法研究及微地震监测技术研究.E-mail:zhanghl_amy5257@163.com

通讯作者: 王保利, 男, 1981年生, 主要从事煤矿井下地震勘探技术和高性能计算方法研究.E-mail:pooly1981@163.com

中图分类号: P631

收稿日期:2018-12-05
修回日期:2019-04-24
上线日期:2019-06-05

Interferometry imaging using high-speed-train induced seismic waves

ZHANG HuanLan^1,2,,
WANG BaoLi^3,,,
NING JieYuan^4,6,
LI YouMing^5,6
1. College of Geology and Environment, Xi'an University of Science and Technology, Xi'an 710054, China
2. Shaanxi Provincial Key Laboratory of Geological Support for Coal Green Exploitation, Xi'an 710054, China
3. Xi'an Research Institute of China Coal Research Institute, Xi'an 710049, China
4. School of Earth and Space Sciences, Peking University, Beijing 100871, China
5. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
6. The Joint Research Group of High-Speed Rail Seismology, Beijing 100029, China


More Information

Corresponding author: WANG BaoLi,E-mail:zhanghl_amy5257@163.com

MSC: P631

--> Received Date: 05 December 2018
Revised Date: 24 April 2019
Available Online: 05 June 2019


摘要
摘要:高铁运行会引起铁轨的震动，从而产生地震波向地下介质中传播，通过研究该地震波可对高铁沿线的地质情况进行持续监测.与常规地震勘探中的震源相比，高铁地震中的震源较为复杂，为移动震源，而地震干涉技术可以通过地震记录间的相互干涉，消除震源的影响，因此可利用地震干涉技术对高铁地震信号进行处理并成像.本文通过分析研究，总结出地震干涉方法在处理高铁地震数据时的关键技术问题：不同于常规地震干涉中先干涉后叠加的干涉成像方式，高铁地震移动源的特点使得干涉顺序变为先叠加后干涉，由此带入了大量震源串扰噪声；初步提出两种解决高铁地震干涉成像的思路：通过对高铁地震信号的处理，使高铁变相"提速"或"降速"，给出了"提速"或"降速"后各自的成像思路，并给出了数据处理的技术设想.
关键词: 地震干涉/
高铁地震/
格林函数/
串扰噪声

Abstract:A running high-speed-train can cause vibration of rails, generating seismic waves to propagate in the subsurface. Geological conditions along a railroad can be continuously monitored by studying such seismic waves. Compared with conventional seismic exploration, the source of high-speed-train induced seismic waves, a moving one, is more complex. The seismic interferometry can eliminate the influence of the source through the interference between seismic records. Therefore, this method can be used to process high-speed-train seismic signals and image subsurface structure. This paper summarizes the key technical problems of seismic interferometry in this aspect. Unlike conventional seismic interferometry, the moving source of the high-speed-train makes the interference sequence superimposed first and then interfered, which brings in a lot of source crosstalk noise. Two solutions to this issue are put forward preliminarily:the high-speed-train can be "accelerated" or "decelerated" in a disguised form by processing the signal of high-speed-train seismic waves, and the ideas on imaging after "acceleration" or "deceleration" and the technical approach of data processing are proposed, respectively.
Key words:Seismic interferometry/
High-speed-train seismic/
Green's function/
Crosstalk noise



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