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

作     者：HAN Jianguang LÜQingtian ZHANG Zhiheng YANG Shun WANG Shuo HAN Jianguang;LÜ Qingtian;ZHANG Zhiheng;YANG Shun;WANG Shuo

作者机构：Chinese Academy of Geological SciencesBeijing 100037China Shandong Taishan Resources Exploration Co.Ltd.Jinan 250104China 

出 版 物：《Acta Geologica Sinica(English Edition)》 (地质学报（英文版）)

年 卷 期：2024年第98卷第1期

页      面：276-284页

核心收录：

学科分类：081801[工学-矿产普查与勘探] 081802[工学-地球探测与信息技术] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：supported by the National Natural Science Foundation of China(Grant No.42174157) the CAGS Research Fund(Grant No.JKY202216) the Chinese Geological Survey Project(Grant Nos.DD20230008,DD20233002) 

主　　题：reflected in-seam wave Gaussian beam summation migration numerical tests fault 

摘      要：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 ***-seam wave exploration is an effective technique for acquiring detailed information on geological structures in coal seam working ***,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 *** study applies the Gaussian beam summation(GBS)migration method to imaging coal seams reflected in-seam wave ***,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 ***,imaging is performed using the GBS migration *** 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 *** 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.