可缩性圆形支架壁后充填注浆加固技术研究

来源期刊：有色金属2011年第2期

论文作者：李书民 孙小岩 张丰

文章页码：236 - 238

关键词：软岩巷道； 壁后充填； 注浆加固； 可缩性圆形支架

Key words：soft rock roadway； backfilling； grouting and reinforcement； retractable circular support

摘    要：通过对常村煤矿轨道下山采用锚网(索)+36U型钢等常规支护形式失败的原因进行分析,得出巷道可锚性差是造成锚杆锚固力低和锚固效果差的主要因素;同时对巷道断面的选择和壁后充填注浆加固机理的分析,提出采用可缩性圆形支架壁后充填注浆加固技术。实践证明,采用可缩性圆形支架壁后充填注浆加固技术可有效解决软岩巷道变形的难题,为常村煤矿类似的巷道提供了一个有效的支护新途径。

Abstract: By analyzing the failure of traditional support by 36 U-shaped steel and wire mesh in the track dip in Changcun coal mine,it can be concluded that anchoring property is the primary cause for the low anchorage force and the poor effect of anchoring.Through analyzing the cross section of roadway and roadway reinforcement theory by backfilling grouting,roadway reinforcement technique by retractable circular support and backfilling grouting is put into effect.This industrial practice demonstrates that this technique can solve the matter of deformation failure of soft rock roadway and can be used in other roadways with the similar situation in Changcun coal mine.