METHOD FOR MINING SEAM FORMATIONS OF MINERALS Russian patent published in 1997 - IPC

FIELD: mining industry. SUBSTANCE: method can be used in mining formations of close seams of minerals at large depths. Seams are divided into panels. Main entries are made in lowest seam or in roof rock of seam located underneath and panels are worked along one of seams. After finishing mining of aforesaid panels and stabilization of process of displacing rock of upper rock mass, mined are panels along other seam. Panels of first seam are mined in downward order beginning from level located at upper boundary of panel, and panels of second seam are worked in upward order beginning from level located at lower boundary of panel. EFFECT: high efficiency. 2 cl, 2 dwg