煤矿窄煤柱沿空掘巷巷道围岩控制技术研究

Study on surrounding rock control technology of roadway driving along goaf with narrow coal pillar in coal mine

沿空掘巷掘进可以提高煤的采收率,这在许多煤矿中都有应用。以煤矿10416工作面尾巷地质条件为基础,分析了窄煤柱边空巷掘进围岩变形特征,得出了合理煤柱尺寸和回采后合理巷道掘进时间。提出了巷道围岩控制技术并应用到实际。结果表明,该方法可以使工作面更安全、更高效。此外,对于特殊地质条件下窄煤柱沿空掘巷围岩的控制,本研究也具有重要的理论意义和参考价值。

Roadway excavation along goaf can improve coal recovery, which is applied in many coal mines. Based on the geological conditions of tail roadway in 10416 face of coal mine, the deformation characteristics of surrounding rock in narrow pillar side goaf are analyzed, and the reasonable pillar size and reasonable roadway excavation time after mining are obtained. The roadway surrounding rock control technology is proposed and applied to practice. The results show that this method can make the working face safer and more efficient. In addition, this study also has important theoretical significance and reference value for the control of surrounding rock in gob driving roadway with narrow coal pillar under special geological conditions.