【摘要】 结合葛店矿-600m软岩轨道大巷现场实际,分析了支护体失稳、破坏原因。采取矿压观测和测定松动圈的方法,掌握围岩变形特征,得出二次注浆加固的最佳时间,合理确定了支护参数和实施方案。现场进行锚注加固试验,取得了良好的围岩控制效果。更多还原

【Abstract】 Combining the on-the-spot reality of soft rock tunnel of -600m level in Gedian coal mine, the destabilization and destruction reason of support lithesome is analyzed. Adopting the way of ground pressure observation and assaying the size of loose-range, the deforming characteristic of country rock is grasped, gaining the best time of the second grouting-reinforcement, the appropriate support parameter and implementing scheme is determined. Preceding the field test of grouting-reinforcement, the good control of country rock is gained.更多还原