MINING METHOD OF THICK STEEP ORE BODIES

FIELD: mining.SUBSTANCE: method includes digging of workings for dividing of ore body in blocks, stage extraction of ore by chambers. After dividing of ore body into panels, blocks and chambers, development of chambers is done in staggered order as to ore body rise by the scheme I--II-as shown in dwg. 1-5. At that bottoms of adjacent chambers I (II) and III (IV) are displaced by one sub-level. Broken ore is transported from the chamber to bottom gangway along delivery crosscut drifted in the middle part of adjacent chamber which is used as drilling crosscut during its development. Development of ore of upper part of chambers is performed between artificial pillars from consolidating stowing mass, and of lower chamber - in ore rock. Coefficient of form K=b/hsize of ore pillar corresponds to the following condition: 0.5