Forward Simulation of Unfavorable Geological Bodies and Analysis of Waveform Characteristics Based on time Domain Finite Difference Method

被引：0

作者：

You, Shuai ^{[1
]}

Yang, Renshu ^{[1
,2
]}

Yang, Liyun ^{[1
]}

Duan, Yun ^{[3
]}

Liu, Xiangyu ^{[2
]}

Xiao, Chenglong ^{[4
]}

Zhang, Xiang ^{[1
]}

Yang, Zhen ^{[1
]}

Li, Chengxiao ^{[2
]}

Li, Dongze ^{[1
]}

机构：

[1] China Univ Min & Technol Beijing, Sch Mech & Civil Engn, Beijing 100083, Peoples R China

[2] Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing 100083, Peoples R China

[3] BGRIMM Technol Grp, Beijing 100160, Peoples R China

[4] Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China

来源：

PURE AND APPLIED GEOPHYSICS | 2025年 / 182卷 / 05期

基金：

国家重点研发计划; 中国博士后科学基金;

关键词：

The finite difference time domain method; forward forecast; forward modeling; the improved Hilbert-Huang transform; energy distribution; ELEMENTS;

D O I：

10.1007/s00024-025-03723-0

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

To study the waveform variation law of seismic records for advanced detection using rock-breaking vibration as a seismic source during the operation of a shaft tunneling machine, this article establishes a forward modeling of poor geological bodies based on the finite difference time domain method (FDTD). By applying the improved Hilbert-Huang transform to the collected seismic records, the time-frequency domain characteristics of the waveform are analyzed, and the results are verified using wavelet transformation. The applicability of this method for seismic signal analysis is verified. The main conclusions are as follows: The energy intensity of direct waves is much greater than that of reflected waves, and the main energy of direct waves is concentrated between 0 and 90 Hz, while the main energy of reflected waves is concentrated between 0 and 110 Hz. The overall energy of caves in poor geological bodies is the largest.

引用

页码：1983 / 1999

页数：17

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