掘进巷道快速过断层施工技术应用

Application of Rapid Crossing Fault Construction Technology in Tunneling Roadway

基于四候煤矿3108回风顺槽过F3断层期间,顶板出现严重破碎、下沉现象,提出了俯斜台阶法施工工艺,并对断层破碎带顶板采取MF-2型化学材料注浆加固以及"钢筋锚索网+U29梯形棚"联合支护措施。支护效果检验结果表明,联合支护有效控制了断层破碎区顶板下沉、破碎现象,保证了巷道顶板稳定性。

Based on the fact that 3108 return air in Sihou Coal Mine passes through F3 fault and the roof is seriously broken and sunk,the construction technology of inclined bench method is put forward,and MF-2 chemical material grouting reinforcement and"reinforced anchor cable net+U29 trapezoid shed"combined support measures are adopted for the roof of fault fracture zone.The test results of support effect show that the combined support can effectively control the roof subsidence and breakage in the fault fracture area,and ensure the roof stability of the roadway.