Comprehensive geophysical prospecting method in special railway line of coalpit goaf detection application of pingshuo eastern open-pit coal mine

Disordered mining of small coalpits without a license formed geological anomalous bodies such as the goaf which often brings hidden danger to highway,railway and other engineering construction and long operation.In order to solve the problem above,this article applies the comprehensive geophysical prospecting method that it measures the shallow goaf of sensing area by using the ground penetrating radar and AGI high density resistivity method and measures deep goaf by using EH4 Electromagnetic image system.As a result,it obtained distribution profiles of the goaf,divided key areas of abnormality and achieved satisfactory detection.At last it provides safety and security purposefully for the management of gob area.