Materiały konferencyjne SEP 2018

XXVII SCHOOL OF UNDERGROUNDMINING 2018 , Cracow, Poland ROADWAY SUPPORTING AND RELATION TO THE STRESS STATE CONDITION σ H = 25MPa σ h = 8MPa Seam => 30 Depth => 750-900m Thickness =>1.8- 5 m Support => rockbolts Technology => bolter miner (ABM 20) => ENTRY WORKING - maximal production 25m per day roof shear roof bulking rib squeeze Legend: good condition CSM Mine – shaft pillar