Selection of Rational Flow Sheets for Overcutting in Top-Down Mining in Internatsionalny Mine
V. D. BARYSHNIKOV, L. N. GAKHOVA
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasnyi pr. 54, Novosibirsk, 630091 Russia
Keywords: слоевая камерно-целиковая система разработки, очистная заходка, напряжения, разрушения, room-and-pillar methd, entry stope, stresses, failure
Abstract
Using numerical modeling of rock mass stress-strain state to estimate and predict stability of structural elements of a mining system in combination with the in situ observation data on deformation of rocks in sidewalls, roofs and floors of underground excavations, the authors perform geomechanical analysis of overcutting scenarios in top-down mining in Internatsionalny Mine, ALROSA. Various overcutting flow sheets are considered, and the optimal sequence of overcutting towards higher stability of stopes is determined.
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