Exploration of goaf in Yushuling coal mine of South Tianshan based on geophysical technology
LIU Wenfeng
LIANG Kai
SI Chonglu
WANG Yuhan
LIU Mingbo
WANG Junfeng
Abstract：The existence of coal mine goafs will directly threaten the safe and efficient production of mines,and the scope of the goaf must be detected.The existing goaf detection methods include engineering geological method,geophysical method,drilling method and so on,but there are multiple solutions and uncertainties in using a single method.Based on the study of geophysical characteristics of goaf,the key technology of plane range prediction of goaf is studied,and a comprehensive prediction method combining engineering geological mapping,geophysical exploration and engineering geological drilling is proposed.Firstly,the approximate range of goaf is delineated by engineering geological mapping.Then,the transient electromagnetic method is used to further describe the distribution of goaf,and the shallow 3D seismic data is used to describe the fine distribu-tion of goaf.Finally,the boundary of goaf depicted by earthquake is tested by engineering drilling.The method is applied to the plane range detection of the goaf in Yushuling Coal Mine.Two goafs are detected in the lower 5 coal seam,which improves the accuracy and reliability of the goaf detection.It is proved that the method can be popularized and applied in coal mining engineering.
Keywords：coal mine goafgeophysical characteristicstransient electromagnetic method3D seismic
Publication Date：2024-08-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 36-42 )