Research on Detection and Safety Analysis of Unfavorable Geological Bodies Based on OCTEM-PHA

The caving method and mining disturbance may cause geological issues. advance prediction of unfavorable bodies should be conducted to ensure product safety in the underground mine. In this study, we proposed OCTEM-PHA analysis process analyzed Tongkeng Mine Guangxi. Further, opposing-coil transient electromagnetic (OCTEM) detection on four lines T5-1 stope at mine level 386 by using portable remote sensing equipment created inversion maps. Plot profiles coupling were with maps explore five types risk factors presented preliminary hazard (PHA) was used for predict accident consequence develop countermeasures. results indicate following: (1) is realistic feasible. (2) OCTEM shows an excellent response both high- low-resistance anomalies practical engineering applications. helps visually analyze area apparent resistivity anomalies. (3) studied did not show overhanging formed overlying rock layer large loose void areas. However, crumbling further optimized balanced mining, treatment groundwater surface water improved, comparative follow-up increased.