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在分析青山煤矿四水平东大巷原有软岩巷道支护的基础上。结合巷道围岩工程特性,按软岩巷道支护优化设计原理设计了正确的支护方式和施工方案,并进一步设计了钢筋网让压结构。在施工队伍按照设计要求组织施工的条件下,大巷顺利通过软弱围岩段取得了明显的经济效益,为四水平延深起了关键作用,其支护设计方法与方案可在类似围岩中推广作用,图3,袁3,参3。
On the basis of analyzing the support of the original soft rock roadway in the four-level east lane of Qingshan Coal Mine. Combined with the engineering characteristics of roadway surrounding rock, according to the principle of soft rock roadway support optimization design, the correct support mode and construction scheme are designed, and the reinforced structure is further designed. Under the condition that the construction team organized the construction according to the design requirements, the large lanes passed the weak surrounding rock sections and achieved obvious economic benefits, which played a key role in the extension of the four levels. The supporting design methods and schemes could be found in similar surrounding rock Promotion role, Figure 3, Yuan 3, Participation 3.