Numerical Simulation of Advanced Geological Prediction for Deep and Large Faults in Tunnels Using a Spectral Element–Based Seismic Method

DOI

10.2991/978-94-6463-932-2_31How to use a DOI?

Keywords

deep fault; seismic wave; spectral element method; advanced geological prediction; numerical simulation

Abstract

Deep and large faults seriously restrict the design and construction of tunnels, and the advanced geological prediction of deep and large faults is of great significance. To finely analyze the propagation mechanism of seismic waves in the advanced geological prediction of deep and large faults in tunnels, the spectral element method was used to numerically forward the wave field characteristics of seismic waves in the geological models of deep and large faults with different inclination angles. During the advanced geological prediction, when the source is placed at the tunnel face, the seismic waves are received at the tunnel wall, the direct wave, converted wave, and reflected wave will propagate in the same direction. The wave field signal is relatively simple, which is conducive to distinguishing various types of wave groups; when there is a deep and large fault in front of the tunnel face, the change of the inclination of the fracture surface has almost no effect on the morphology of the direct P wave, S wave and R wave, but has a great influence on the converted PPR wave, SSR wave, reflected PP wave and SS wave. By analyzing this difference, the inclination characteristics of the deep and large fault can be judged.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Mingcai Zhang
AU  - Jialin Qi
AU  - Guanghong Ju
AU  - Sheng Lai
AU  - Dong Li
AU  - Zonggang Chen
PY  - 2025
DA  - 2025/12/22
TI  - Numerical Simulation of Advanced Geological Prediction for Deep and Large Faults in Tunnels Using a Spectral Element–Based Seismic Method
BT  - Proceedings of the 2025 2nd International Conference on Civil Engineering Structures and Concrete Materials (CESCM 2025)
PB  - Atlantis Press
SP  - 311
EP  - 321
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-932-2_31
DO  - 10.2991/978-94-6463-932-2_31
ID  - Zhang2025
ER  -