摘要
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。
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.
作者
朱少杰
ZHU Shao-jie(Shanxi Coal Marketing Group,Shengtai Coal Industry Co.,Ltd.,Gaoping 048400,China)
出处
《煤》
2020年第4期21-22,49,共3页
Coal
基金
内蒙古自然科学基金项目资助(2018LH05009)。
关键词
注浆加固
破碎顶板
钻孔
围岩稳定性
grouting reinforcement
broken roof
drilling
stability of surrounding rock
