Quantitative estimate of rotary–percussion drilling efficiency in rocks


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The factors that have significant influence on efficiency of rotary–percussion rock drilling with downhole machines are discussed. The results obtained in physical simulation of dynamic driving of rock-breaking indenters in rocks are reported. The results are analyzed from the standpoint of the phenomenon of alternating response of rocks to dynamic impacts.

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V. Oparin

Chinakal Institute of Mining, Siberian Branch

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Email: oparin@misd.ru
俄罗斯联邦, Krasnyi pr. 54, Novosibirsk, 630091

V. Timonin

Chinakal Institute of Mining, Siberian Branch

Email: oparin@misd.ru
俄罗斯联邦, Krasnyi pr. 54, Novosibirsk, 630091

V. Karpov

Chinakal Institute of Mining, Siberian Branch

Email: oparin@misd.ru
俄罗斯联邦, Krasnyi pr. 54, Novosibirsk, 630091

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