TRANSPORTATION METHOD OF MINED ROCK FROM UNDERGROUND STOPES IN NEAR-BORDER MASS OF OPEN PIT Russian patent published in 2013 - IPC E21C41/00 E21F13/00 

FIELD: mining.

SUBSTANCE: method involves drilling of a transport tunnel from the open pit on horizon below the developed ore deposit, loading of mined rock from the ore deposit to mine dump trucks and delivery of mined rock with mine dump trucks via the transport tunnel to its portal located on the open pit side, transshipment at the transshipment point of mined rock from mine dump trucks to the open pit transport. Section of transport tunnel, which is located under outlines of ore deposit, is horizontal, and the rest section of the transport tunnel, which is interconnected with its portal, is inclined. Portal of the transport tunnel is arranged below horizontal section of transport tunnel and transshipment point above it. Transshipment point is connected to horizontal section of the transport tunnel via an inclined transport access track. Movement of mine dump trucks along the inclined transport access track for loading of mined rock and mine truck dumps loaded with mined rock via an inclined section of the transport tunnel is performed by self-operation under action of gravity force, in compliance with the programmed mode.

EFFECT: reduction of operating costs for transportation of broken mined rock via underground mine workings; reduction of costs for their ventilation with simultaneous improvement of environmental situation.

2 cl, 1 dwg