GEOMECHANICAL ASSESSMENT OF ORE DRAWPOINT STABILITY IN MINING WITH CAVING
S. A. Neverov, A. A. Neverov
N.A. Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasny pr. 54, Novosibirsk, 630091 Russia
Keywords: Rock mass, face ore discharge, combined face-throughout ore drawing, depth, stress state, stability
Abstract
The authors solve the problem on stress–strain state of adjacent rocks of ore passes arranged in the face area under caved ore and the ore passes arranged both lengthwise the stope and in the stope face area (the face ore drawing scheme and the combined face-throughout ore drawing scheme, respectively) using the finite element method. The article describes stress distribution in higher stress zones and in distressed areas depending on the ore discharge preparation techniques at depths down to 1.5 km.
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