Geomechanical Validation of the Parameters and Technique for Damping Layer in the Vicinity of Underground Excavation for Ground Pressure Relief
A. A. EREMENKO, V. M. SERYAKOV, L. N. GAKHOVA
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasnyi pr. 54, Novosibirsk, 630091 Russia
Keywords: stresses, strains, rock mass, underground excavation, dynamic events, blasting
Abstract
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.
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