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根据5 802工作面火成岩墙侵入情况,提出了预掘岩墙空巷的工作面过岩墙技术方案.确定了空巷掘进的时空参数;设计空巷锚杆(索)联合支护方案,采用树脂注浆加固空巷围岩;工作面采用伪斜推进,逐段分区通过岩墙.现场施工结果表明:工作面通过岩墙期间,除局部围岩应力集中明显外,工作面及回采巷道围岩稳定性均得到有效控制,形成了一套快速、安全通过岩墙的技术方案,为其他矿井解决类似问题提供了较好的工程借鉴.
According to the incursion of the igneous wall in 5 802 working face, the technical scheme of crossing the dyke of the working face with pre-digged empty wall is proposed, and the space-time parameters of the roadway driving are determined. The joint support plan of the gob- The resin grouting reinforces the surrounding rock of empty roadway, and the working face adopts the pseudo-oblique propulsion and divides the section by the rock wall section by section.The result of field construction shows that during the period when the working face passes the rock wall, except for the stress concentration of local surrounding rock is obvious, Rock stability have been effectively controlled, forming a set of technical solutions that quickly and safely pass the rock wall, which provides a good project reference for other mines to solve similar problems.