Akishev a. N. – Yakutniproalmaz Research and Design Institute, ALROSA Group, Mirny, the Republic of Sakha (Yakutia), the Russian Federation. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Lel' Iu. I. – The Ural State Mining University, Ekaterinburg, the Russian Federation. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Il'bul'din D. Kh. – Yakutniproalmaz Research and Design Institute, ALROSA Group, Mirny, the Republic of Sakha (Yakutia), the Russian Federation. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Musikhina O. V. – The Ural State Mining University, Ekaterinburg, the Russian Federation.
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Glebov I. A. – The Ural State Mining University, Ekaterinburg, the Russian Federation. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

The analysis of recommendations over the mine engineering parameters and the sequence of mining Nyurbinsky open pit down to the depth of 570 m with the use of four-wheel drive hinge articulated dump trucks has been fulfilled. The two variants of open pit development have been worked out. For practical implementation the variant have been recommended, which involves local reconstruction of open pit edges without changing its surface borders. The formulae are suggested for the preliminary calculation of the depth of transition to exposing with steeply inclined crosses-over with the use of four-wheel drive dump trucks. It has been stated that in the variant suggested, the rational depth of transition constitutes 330 m. Suggestions to ensure the conditions of efficient exploitation of hinge articulated dump trucks under the development of deep horizons of an open pit have been substantiated, which consist in the use of haulage berms of variable width, motor transport robotization, and lower open pit horizons exposure with marginal automobile tunnels
of spiral shape.

Key words: open pit; motor transport; haulage berm; pit edge stability coefficient; steeply inclined crosses-over; tunnel; transition depth.

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