煤矿软弱围岩锚固孔底部扩孔区锚固效果保障方法与实验 - 贺德印; 刘少伟; 付孟雄; 贾后省; 张玮钰; 宋伟鹏 (煤炭学报, 2024)
Keywords: 软弱围岩; weak surrounding rock; 锚杆支护; 锚固孔扩孔; 锚固力提升; roof bolting; borehole reaming; anchoring effect; 锚固效果; anchoring force improvement