Justification of Shrinkage Stoping Parameters for Thin Ore Bodies in Gravitational Stress Field
S. A. Shchukin, A. O. Kudrya, A. A. Neverov, S. A. Neverov, A. M. Nikolskiy
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Deposit, thickness, mining system, ore shrinkage, stress field, technologiy parametersm, safety, application domain
Abstract
The authors discuss a variant of shrinkage stoping in mining steeply-dipping ore bodies of limited thickness. In the context of the majority of operating mines in Russia, numerical stress-strain modeling of gravitational stress state of an ore-rock mass is performed. The stress patterns in structural elements of the discussed geotechnology are determined as function of thickness and occurrence of the ore body, and subject to the technology implementation. It is found that rock mass quality greatly influences stability of different-purpose mine openings and ore pillars. The safe mining system parameters are determined and standardized for the typical geological and geomechanical conditions of the test deposits.
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