FEATURES OF CREATING BALL CAVITY GENERATOR TO ESTIMATE ROCK MASS STRESS STATE
N. G. Kyu
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Шаровая полость, резание горной породы, скважина, форма резцов, алмазные вставки, Ball cavity, rock cutting, borehole, cutter shape, diamond inserts
Abstract
Design features and operating principles of ball cavity generators in the rock mass through boreholes are considered. A technical solution to the formation of ball cavities is proposed and the advantage of its use for estimating the stress state of the rock mass by hydraulic fracturing method is shown in comparison with other methods
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