Perfected method of exploiting inclined and weaked deposits of a mineral with short work faces and hydraulic excavation. (Machine-translation by Google Translate, not legally binding)

摘要

Improved method of exploiting inclined deposits with weak dip of a mineral with short working faces and hydraulic excavation, which includes dividing the deposit that is being exploited into levels and subdividing these levels into sub-levels, whose height is determined by the geology of the rocks of the formation of the deposit, characterized in that the sublevels are subdivided further into blocks, the width of each block being close to the limit length of the safe or self-supporting or protruding reach of the rock overhang of the main roof of the deposit, with the given pattern of cutting in the deposit with the cutting galleries and holes of the short working faces, fixing the spacing in the direction of the strata of the blocks that are being worked in the adjacent sub-levels to avoid the influence of the pressure of the supporting rocks due to the start-up work that is being done in any of these blocks on the another block. (Machine-translation by Google Translate, not legally binding)