单一关键层坚硬顶板沿空留巷可行性研究

Feasibility Study on Gateway Retained along Goaf of Single Hard Roof and Key Stratum

针对单一关键层坚硬顶板回采工作面进行科学有效的沿空留巷的问题,以荣泰煤矿10102回风巷沿空留巷作为研究对象,采用理论分析和结合实际的方法,分析了预留巷上覆岩层动静荷载及岩层运动的影响、顶板断裂位置、超前采动对预留巷的支护影响等,建立了反映顶板基本特性的力学模型,对其可行性进行分析研究。结果表明,单一关键层坚硬顶板回采工作面沿空留巷是合理可行的。

Based on scientific and effective hard roof key stratum for single working face carrying on problems, took Rongtai Mine 10102 return air lane along the empty left lane as the research object, the method of theoretical analysis and practical analysis was taken, the reserved lane overburden of dynamic and static load and the influence of strata movement,the roof fracture location, the advanced mining supporting effect of the reserved lane were analyzed, which reflected the basic characteristics of roof and established mechanical model, its feasibility study was analyzed. The results showed that the single hard working face roof key stratum along the empty left lane was feasible.