The technology and application of coal mine goaf ground detection

The series of disaster caused by coal mine goaf have become one of the important factors threat of coal mine and social safety. In order to detect the unknown goaf, eliminate hidden dangers, based on analyzing geophysical characteristics of coal mine goaf, the high density resistivity method, transient electromagnetic method, EH-4 magnetotelluric method and shallow seismic method are introduced. Combined with detection examples, the application effect are summarized. So it provides helpful experience for coal mine goaf detection in future.