METHOD OF MINING OF INCLINED MINING FIELDS ON THIN AND MEDIUM-THICK FLAT-DIPPING COAL SEAMS Russian patent published in 2003 - IPC

FIELD: mining industry; applicable in mining of thin and medium-thick moderate and medium-dipping coal seams. SUBSTANCE: method of mining of medium-thick bedded deposits includes preparation of inclined mining field by long pillars on the strike, driving of vent and haulage drifts. Formed below haulage drift through coal pillars with lead and incline towards opening workings are two chambers. Width of lower chamber shall provide for accommodation of working member of mining complex, and width of upper coal chamber shall provide for accommodation of rock extracted in haulage drift driving, and determined by formula given in the invention description. EFFECT: higher intensity of preparation and mining of inclined mining fields and quality of mined coal. 2 dwg