【摘要】 利用钢管混凝土支架技术,对八采轨道下山进行加固修复,有效地控制了围岩变形,保证了巷道稳定,取得了良好的技术经济效果。更多还原

【Abstract】 Steel pipe concrete supports are applied for the reinforcement of the down-hill haulage way in the No. 8 mining district. The use of such supports has led to more effective control of deformation of surrounding rock,greater stability of haulage way and improved techno-economical performance更多还原