METHOD FOR DEVELOPMENT OF STEEP THICK SEAMS OF ORE BEDS

摘要

Method for development of steep thick seams of ore beds includes separation of ore body within the limits of height from above to separate blocks, with making preparation workings, with separation of each block to two or more sub-floors with approximately equal height, with sequential working-out those, beginning from the upper one; with making in each sub-level cut workings and drilling ore massif by deep wells, with formation of compensation chamber with following breaking the chamber stock to it through sequential breaking deep wells drilled in it and with discharge and bringing broken ore under protection of the ceiling and the inter-chamber blocks, those are worked out after complete extraction of chamber stock. At that, from the workings of the bottom, over the sub-level just worked out, one drills lowering deep wells; at that the chamber stock and the ceiling are broken in upward sequence through sequential initiation of the charges of explosive substance, this is placed in deep wells.