煤矿掘进巷道过断层带施工加固技术应用研究

Study on Mine Mining Roadway Crossing Fault Zone Construction Reinforcement Technology Application

阳泉集团新元矿31003工作面在掘进过程中揭露逆断层,由于巷道处于断层影响区域,该区域巷道的煤体顶板破碎严重,整体性较差,巷道冒落严重,通过对断层附近巷道采用锚网索+29 U"O"型棚复合全封闭支护,并在此基础上,对断层破碎区域进行化学注浆加固。提高了巷道的支护强度及围岩的整体强度,防止冒顶的继续扩展,保证巷道顺利通过断层区域。

Xinyuan Mine of Yangmei Group reverse fault came up in12220 working face mining, because of roadway in fault area of influence, the area roadway coal body roof was seriously broken, with poor integrity and serious roof fall, anchor wire rope ＋ 29 U ＂O＂ type eompound totally enclosed supporting was adopted in faults nearby roadway, and based on this, the fault broken area was reinforced by chemical grouting. The technology improved the support strength as weU as the overall strength of the roadway surrounding rock, prevented roof from expanding and ensured roadway crossing smoothly the fault zone.