Study of the detecting of harzard mined goaf using ground penetrating radar technology

The mined goaf near the shallow surface of the mine has been a hidden trouble of the mine disaster. To prevent and control the disasters of goaf, it is important to detect overlying rock thickness of goaf. In this paper, a new Italian production Detector Ground Penetrating Radar devices is applied to detect the overlying rock thickness of goaf. The antenna of The device is the IDS TR40 MHz, and the maximum detection depth up to 50 m. Monitoring methods and procedures were reviewed, and it applied to detect overlying rock thickness of goaf in the Longqiao mined iron ore exploration. The results show that the overlying rock thickness is greater than 25 m, which meets the safety requirements for the mine’s safety, and it provides a theoretical basis.