充填开采沿空留巷技术研究

Research of Gob-side Entry Retaining in Backfill Mining

在分析充填开采以及沿空留巷技术特点的基础上,提出了充填开采沿空留巷技术,榆林某矿作为首个试验工作面进行了实施。FLAC^(3D)数值模拟及工业应用均验证了厚松散层浅埋深煤层进行充填开采沿空留巷的可行性。研究表明,该技术合理,沿空留巷稳定,地表沉降控制效果理想。

Based on the analysis of mining and filling along the goaf with technical features, the gob-side entry retaining and backfill mining was proposed at Yuyang mining area and applied firstly. FLAC3Dnumerical simulation and industrial application verified the feasibility of retaining roadway along goaf in filling mining in shallow and deep coal seam with thick loose seam. The results show that this technique is reasonable, gob-side roadway remained stable,ground surface settlement is effectively controlled.