Pre-grouting reinforced supporting structure for lower coal seam roadway roof - KAN JIAGUANG; ZHANG SHENG; REN HONGCHAO; CUI GUANGZHEN; ZHANG HUARONG; LI AORAN; WANG XINJIE; YANG LIN; LIU HONGBO (2024)
Keywords: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS