下山斜巷过陷落柱区支护技术应用

Application of Support Technology for Downhill Sloping Lane over Trap Column Area

为了保证巷道安全快速掘进,针对永丰煤矿皮带斜巷掘进过陷落柱区时巷道顶板出现破碎、下沉的现象,提出了“喷浆+架棚”联合加强支护技术。实际应用效果表明,采取联合支护技术后提高了陷落柱区围岩稳定性,防止了顶板冒漏事故发生,取得了显著应用成效。

In order to ensure the safety and rapid excavation of the roadway,the joint support technology of"slurry spraying+scaffolding"is proposed to strengthen the roof plate of the roadway when the belt slant roadway of Yongfeng Coal Mine is excavated through the trapped column area,which is broken and sinking.Through the practical application effect,the joint support technology has improved the stability of the surrounding rock in the trapped column area and prevented the occurrence of the roof plate leakage accident,which has achieved significant application effect.