New Capabilities of the Earth’s Gravitational Field Energy in Underground Ore Mining with Convergent Technologies
Yu. P. Galchenko1, V. A. Eremenko2, A. M. Yanbekov2
1Academician Melnikov Research Institute of Comprehensive Exploitation of Mineral Resources, Moscow, 111020 Russia
2NUST MISIS' College of Mining, Moscow, 199991 Russia
Keywords: Earth's gravitational field energy, convergent mining technologies, gravity caving, exposed rock span, dome of natural equilibrium, Mathews-Potvin stability graph method, potential energy
Abstract
The authors propose a new approach to gravity caving of ore in mining with convergent technologies. Based on the ultimate span determination using the stability graph method by Mathews and Potvin among other things, the optimal conditions of gravity ore caving in block rock mass are defined. Structurally, in the operating layer of an ore body, a vertical cut-out is made, and the inclination angles of walls of the outlining and partition backfill masses are changed. The article presents calculation of the Earth’s gravitation field energy accumulated within the dome of natural equilibrium formed in rock mass in the course of mining.
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