METHOD FOR MINING ORE BODIES Russian patent published in 1998 - IPC

FIELD: mining industry. SUBSTANCE: this can be used for mining inclined ore bodies preferably of low thickness with dipping angle which is insufficient for self-delivery and also for ores which are liable to slumping. This offers possibility for release of shrunk ore without need of presence of people in stoping space and at angle of deposit incline insufficient for self-release of ore and high slumping of ores. According to method, stoping section is divided into chambers. Ore receiving drifts are formed in lower part of chamber. Blast-hole breaking of ore is carried out in bands in ascending order with shrinkage of major amount of cut ore in chamber. With that, formed in shrunk ore are spaces which communicate with development workings. For this purpose, placed on surface of shrunk ore in process of stoping are hollow hoses. Created in aforesaid spaces at releasing ore through chambers are charges of explosive material. Blasting of these explosive charges is employed for delivery of shrunk ore to ore receiving workings. In addition, free ends of hoses are located in ascending drifts. Placing of hoses on surface of shrunk ore is performed before breaking-out of each band of ore. Application of aforesaid method permits for positive displacement of shrunk ore towards ore receiving drifts, and these operations are performed without need of bringing people and mechanisms to worked-out space of block. EFFECT: higher efficiency. 2 cl, 2 dwg