首页|Application of Gaussian Beam Summation Migration in Reflected In-seam Wave Imaging

Application of Gaussian Beam Summation Migration in Reflected In-seam Wave Imaging

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  • 国家科技期刊平台
  • NETL
  • NSTL
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The geological conditions for coal mining in China are complex,with various structural issues such as faults and collapsed columns seriously compromising the safety of coal mine production.In-seam wave exploration is an effective technique for acquiring detailed information on geological structures in coal seam working faces.However,the existing reflected in-seam wave imaging technique can no longer meet the exploration precision requirements,making it imperative to develop a new reflected in-seam wave imaging technique.This study applies the Gaussian beam summation(GBS)migration method to imaging coal seams'reflected in-seam wave data.Firstly,with regard to the characteristics of the reflected in-seam wave data,methods such as wavefield removal and enveloped superposition are employed for the corresponding wavefield separation,wave train compression and other processing of reflected in-seam waves.Thereafter,imaging is performed using the GBS migration technique.The feasibility and effectiveness of the proposed method for reflected in-seam wave imaging are validated by conducting GBS migration tests on 3D coal-seam fault models with different dip angles and throws.By applying the method to reflected in-seam wave data for an actual coal seam working face,accurate imaging of a fault structure is obtained,thereby validating its practicality.

reflected in-seam waveGaussian beam summation migrationnumerical testsfault

HAN Jianguang、Lü Qingtian、ZHANG Zhiheng、YANG Shun、WANG Shuo

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Chinese Academy of Geological Sciences,Beijing 100037,China

Shandong Taishan Resources Exploration Co.,Ltd.,Jinan 250104,China

National Natural Science Foundation of ChinaCAGS Research FundChinese Geological Survey ProjectChinese Geological Survey Project

42174157JKY202216DD20230008DD20233002

2024

10.1111/1755-6724.15108

地质学报(英文版)
中国地质学会

地质学报(英文版)

CSTPCD
影响因子：1.414
ISSN：1000-9515
年,卷(期)：2024.98(1)
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