| 摘要 |
FIELD: mining. ^ SUBSTANCE: invention concerns mining and can be applied in combined development of kimberlitic pipe deposits by deep open pits. The method involves pit levels stripping, conduction of underground and open works, mined rock transportation by haulage benches and underground haulage courses. The pit edge below the combined additional development face is made without haulage benches. At first transportation in the combined additional development zone is performed by temporary declines, which are eliminated later, the further the mined rock is transported by underground haulage courses, which are dug before the beginning of temporary decline elimination. ^ EFFECT: reduced overburden volume within open-pit edge and overburden work cost. ^ 5 cl, 1 ex, 2 dwg |
