Geomechanical Validation of the Parameters and Technique for Damping Layer in the Vicinity of Underground Excavation for Ground Pressure Relief
The data on stress-strain state around an underground opening in an unstable rock mass are reported. For ground pressure relief, it is proved necessary to create a damping layer, and the related drilling-and-blasting parameters are determined. Zones of probable fracture of rock mass under camouflet blasting are identified.