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Study on attenuation coefficient characteristics of the in-seam seismic wave in fault and collapse column
Author(s) -
Yuguang Lian,
Wei Jin-shan,
Li Wen,
Jiao Yang,
Dou Wenwu,
Jianghua Li,
Ziyu Li,
Zhichao Ma,
Wang Guoku
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/585/1/012016
Subject(s) - attenuation , seismology , geology , fault (geology) , anelastic attenuation factor , column (typography) , seismic wave , attenuation coefficient , magnitude (astronomy) , engineering , structural engineering , optics , physics , connection (principal bundle) , astronomy
Various types of geological structures exist in the working face of coal mine stope. Failure to identify the structural development in advance could defer the timely implementation of reasonable management measures, which may eventually affect production safety and connectivity. As a matter of fact, fine detection and interpretation problems of in-seam seismic wave caused by different types of geological anomalies such as faults and collapse columns can exist simultaneously in the working face of mining. In view of these problems, forward modeling research of three-dimensional seismic wave fields on geological models with fault and collapse column are carried out in this study. Meanwhile, in combination with the imaging results of in-seam seismic wave attenuation coefficient of the exposed fault and collapse column, the characteristics of in-seam seismic wave were analyzed. Following comparative analysis, we found the attenuation coefficient anomaly of the fault is generally banded and weakens at both ends of the fault. The attenuation coefficient of the collapse column presents as an irregular ellipse. The energy of the smaller collapse column has a relatively small attenuation, while the energy of the larger collapse column shows a significantly obvious attenuation.

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