注浆加固技术在破碎顶板治理中的应用

针对盛泰煤业15201综采工作面顶板破碎的问题,提出了提前预注浆加固顶板的控制技术,对钻孔过程中易发生卡钻的现象,采用了分段成孔工艺,保证了注浆顺利进行。现场应用结果表明,注浆后顶板最大下沉量降低了47.6%,超前支撑压力降低了18.6%,顶板稳定性及承载能力明显提高,注浆效果显著,为矿井安全生产创造了良好的条件。

Application of Grouting Reinforcement Technology in Broken Roof Treatment

Aiming at the problem of roof broken in 15201 fully mechanized coal mining face of Shengtai Coal Industry,this paper puts forward the control technology of reinforcing roof by pre-grouting in advance.The results of field application show that the maximum subsidence of roof is reduced by 47.6%,the pressure of leading support is reduced by 18.6%,the stability and bearing capacity of roof are improved obviously,the grouting effect is remarkable,and good conditions are created for mine safety production.