某铁矿采矿进路极破碎顶板注浆加固技术研究

Study on Grouting Reinforcement Technology of Extremely Broken Roof in Mining Approach of an Iron Mine

某铁矿-390 m中段5盘区采矿进路在多中段开采影响下大面积来压,造成部分进路围岩破坏严重,对后续掘进极为不利。为此,分析了采矿进路极破碎顶板产生的原因,提出注浆加固技术,并给出了实施方案。将该技术应用到实际工程中,取得了较好的加固效果。

Under the influence of multi-level mining,the mining approach of No.5 panel in-390 m middle section of an iron mine has a large area of pressure,which causes serious damage to the surrounding rock of some approaches and is extremely unfavorable to the subsequent excavation.To this end,the causes of extremely broken roof in mining approach are analyzed,grouting reinforcement technology is proposed,and the implementation plan is given.The application of this technology to practical engineering has achieved good reinforcement effect.