Operation of Draglines at Diamond Deposits in Yakutia
V. I. Cheskidov1, A. N. Akishev2, G. G. Sakantsev3
1Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630091 Russia
2Yakutniproalmaz Institute, ALROSA, Mirny, 678174 Russia
3Institute of Mining, Ural Branch, Russian Academy of Sciences, Yekaterinburg, 620075 Russia
Keywords: крутопадающие месторождения, открытые горные работы, бестранспортная технология, драглайн, вскрышные породы, внутренние отвалы, взрывы на сброс, Steeply dipping ore bodies, open piyt mining, direct dumping, dragline, overburden, internal dumps, throw blast
Abstract
Potential ranges of use of draglines at steeply-dipping diamond deposits in Yakutia are discussed. Technology of stripping with direct dumping and rehandling by draglines is substantiated for upper overburden layers. A variant of increasing height of stripping benches on haulage horizons through the use of draglines and crane lines. The resource saving technology is proposed for mining roundish and extended ore bodies with alternating advance of mining front and with internal dumping. The method of estimating efficient thickness of overburden in case of direct dumping is developed using the layer coefficient of overburden rehandling. Expediency of using blasting for displacement of broken overburden to internal dump is specified.
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