Research on application of high-density electrical method and transient electromagnetic method in coal mine goaf
In order to further explore the distribution characteristics of goaf in coal mining area,the actual situation of goaf in Yima Coalfield was studied.High-density electrical method and transient electromagnetic method were comprehensively applied to explore the goaf of the tar-get mine,the high-density electric method was applied to analyze the abnormal area of apparent resistance value,the cavity and water filling problems in the target mine were judged;the transient electromagnetic method was applied to analyze the distribution characteristics and change of apparent resistance value,so as to clarify the distribution of the existing coal seam and goaf in the target mine.The exploration re-sults of high-density electric method and transient electromagnetic method in two modes were summarized and analyzed,and the abnormal dis-tribution of resistivity caused by the goaf in the measuring area was further obtained,so as to comprehensively mark the goaf in the measuring area.Through on-site drilling methods based on geophysical principles and methods,it was confirmed that the results obtained from the explo-ration of goaf using high-density electrical method and transient electromagnetic method have high accuracy.
万方数据
维普
