软弱围岩巷道联合补强加固技术分析

Analysis of Combined Reinforcement Technology for Roadway in Weak Surrounding Fock Roadway

针对淮北某矿区软弱围岩巷道变形破坏问题,通过理论分析巷道松动圈范围及破坏特征,提出一种"U型钢架+补强锚杆(索)+传载短梁+高强度钢筋网混凝土喷层+锚杆(索)注浆"的联合补强加固技术。结合矿区现场实测数据,结果表明,补强加固可以明显改善巷道围岩变形,巷道整体稳定性得到显著提高。

In view of the deformation and failure of soft rock roadway in a mining area reinforcement thchnology with of Huaibei,analyzed the range of loose circle and the characteristics of the roadway,a combination of ＂U shaped steel frame＋reinforcing bolt（cable）＋load short beam＋high strength reinforced concrete shotcrete and bolt grouting＂ is proposed.Combining with field measurement data,the results show that the reinforcement can obviously improve the deformation of roadway surrounding rock and improve the overall stability.