METHOD OF PREPARATION OF BEDDED DEPOSITS FOR ROOM MINING SYSTEM WITH RETREATING Russian patent published in 2003 - IPC

FIELD: mining industry, applicable in mining of bedded deposits. SUBSTANCE: method includes driving of main haulage and belt headings, subdivision of extraction districts into panels and blocks, driving of block, panel, belt, haulage, production and air headings. For preparation of extraction district for retreating method of mining, district of group haulage heading is driven from main haulage heading over bed. From group haulage heading, perpendicular to it, rooms are periodically developed in bed. In this case, group haulage heading is connected with group belt heading by filled incline and is extended up to cross-section of production heading. Panel air headings are driven by sections as stopping operation front advances through length equaling the block width and connected with belt headings by means of ventilation inclines. EFFECT: reduced volume of tunneling operations and maintenance costs, reduced terms of preparation of extraction district and higher reliability of district ventilation. 3 cl, 1 dwg