Dynamics of Roof Rock Displacement in a Stope in the Course of Mining
M. V. Kurlenya, V. E. Mirenkov
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630091 Russia
Keywords: Выработка, пласт, породы, управления, решение, некорректность, статика, кинематика, динамика, Stope, stratum, rocks, control, solution, incorrectness, statics, kinematics, dynamics
Abstract
A new method is proposed for predicting rock pressure, including static, kinematic and dynamic approaches. The static approach calculates strain state using the known classical method based on the mining guidelines. The kinematic approach takes into account the own weight of overlying strata and makes the kinematic approach more specific. Dynamics is traced as nonlinear deformation in the course of mining, and the dynamic approach needs additional in-situ information on the rock mass behavior. The three approaches provide the total displacement of roof rocks in a stope. The authors discuss a quasi-static approach determining dynamics in terms of the pliability of rocks ahead of an advancing face and feasibility of obtaining experimental data for the new method implementation.
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