System of inclined thin veins extraction by strips along rising during the blasthole ore breaking in two-sided undercuts with explosive ore delivery to the decking of a raise (using monorail complexes)
DOI: 10.47765/0869-5997-2025-10002
Keywords:
mining of inclined veins, raising the mechanization level, monorail complexes, explosive delivery of ore along a decking.Abstract
The paper provides a brief description of mining operations at ore deposits that extract inclined thin veins with a low mechanization level. Because of the limited space, only portable pneumatic perforators are used in the faces, and low-performance scraper hoists are used for loading and delivering
the ore. To extract ore reserves at such objects, a mining operation system is proposed in which the inclined position of the veins is used for delivering the ore mass from the faces down to the haulage drift under its own weight along a low-friction decking (made of high-molecular-weight polyethylene). If such explosive delivery of the ore mass along a "slippery" decking will be implemented, it is possible to significantly increase the overall level of mechanization of the mining operations due to the use of monorail complexes, productive drilling equipment, and expand the possibilities of using the current rock for backfilling the mined-out space. It is considered that the simplest way to assess the efficiency of the explosive delivery is to use a decking of sheet polyethylene VMPE PE 500 and/or SVMPE PE-1000 when driving an inclined block raise, instead of the scraper delivery.
