大倾角煤层沿空留巷切顶工作阻力分析

Analysis of Roof Cutting Working Resistance of Gob-side Entry Retaining in Steep Coal Seam

根据某矿大倾角煤层长壁采场沿空留巷的实际情况,对其顶板岩层进行适当简化,建立了大倾角煤层顶板结构力学模型。通过对力学模型的分析研究,得出沿空侧切顶工作阻力的计算公式,并通过现场实测进行了验证,通过公式计算得到的数值与实际测量值基本吻合。

Based on the actual situation of gob-side entry retaining of a long wall mining working face in steep coal seam, mechanic model of roof structural of steep coal seam has been established according to the simplified roof strata. With the analysis of the mechanic model, the calculation formula of working resistance of gob-side entry retaining has been established, and then been verified by field testing, the numbers calculated by formula is consistent with the actual measured value.