【摘要】 :凤凰山矿以地应力为基础 ,在 2 315 (上 )回风巷设计、试验锚杆支护 ,顶板采用高强度螺纹钢锚杆全锚支护 ,两帮采用竹锚杆支护 ,有效保持了巷道围岩稳定 ,围岩变形量较小 ,取得了明显的经济效益和社会效益更多还原

【Abstract】 Based on stresses in Fenghuangshan coal mine,testing and designing bolt support in 2315 air return roadway roof adopt all bolt support of high strong screwsteel,side adopt bolt support of bamboo,it keeps rockstrata stabilization of roadway rockstrata has just small deform gains good eoonomic returns and social effect.更多还原