Research on Ground Penetrating Radar Surveys of Mined-out Area around 255 Roadway in Complex Geological Environment

Ground penetrating radar (GPR) surveys were conducted in rock mass structure detection and advanced geological prediction for 255 roadway in Linglong Gold Mine of China. The targets of the GPR surveys were to abtain the near-surface mined-out area features associated with dynamically induced liquefaction and disturbances. The GPR survey results using a 250 MHz antenna at the sites of some examples show that GPR is useful to locate subsurface features in the mined-out area for hazard assessment.