Substantiation of Sustainable Parameters of Open-Pit Walls Based on Rating System for Rock Mass Estimate
A. A. Panzhin, T. F. Kharisov, O. D. Kharisova
Institute of Mining, Ural Branch, Russian Academy of Sciences, Yekaterinburg, 620075 Russia
Keywords: Джетыгаринский карьер, физико-механические свойства пород, склерометр, трещиноватость массива, фотограмметрия, беспилотный летательный аппарат, классификация Лобшира, рейтинговые оценки, Dzhetygarinsky open-pit mine, physico-mechanical properties of rocks, sclerometer, rock mass fracturing, photogrammetry, unmanned aerial object, Laubscher’s classification, ratings
Abstract
A set of geomechanical studies was carried out to justify the angles of stable slopes of the Dzhetygarinsky open-pit mine, including testing the physico-mechanical properties of rocks, studying the structure of adjacent rock mass, determining the values of mining rock mass rating (MRMR) and zoning the open-pit surface according to Professor Laubscher’s classification. The values of slope angles of open-pit benches have been recommended and measures developed to ensure their stability. The factors affecting the adjacent rock mass most negatively were identified in classifying the rocks of open-pit mine surface. It was found that the effect of certain factors can be significantly reduced, which will increase the values of wall control angles while maintaining the proper degree of mining safety.
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