摘要
为了提前封闭采区,降低矿井经济投入,陈四楼煤矿在上区段工作面回采结束后,沿未稳定采空区掘进巷道。针对这种特殊条件下的巷道支护难题,分析了未稳定区沿空巷道的围岩稳定性,提出了针对性的支护参数,并在巷道掘进和回采期间进行了巷道表面位移观测。应用结果表明:支护参数设计合理,巷道围岩变形量满足生产要求,达到了预期的支护效果。
To close the working area in advance, reduce the economic investment, when the upper section of the working face in Chensi lou Coal Mine finish coal winning,it began to drive roadway along the non stable goal. Aiming at this particular conditions of roadway supporting problem,the surrounding rock stability of non stable goaf has been analysed. The targeted supporting parameter was put for ward, the observation of the roadway surface displacement has been carried out during the roadway driving and coal winning. The appli cation results show that the design of supporting parameters is reasonable, the deformation of roadway surrounding rock has meet the need of production, and has achieved the forecast supporting effects.
出处
《中州煤炭》
2013年第12期59-61,共3页
Zhongzhou Coal
关键词
未稳定区
沿空掘巷
围岩稳定性
支护参数
矿压观测
Keywords： non stable goaf
gob-side entry driving
surrounding rock stability
supporting parameter
mineral pressure observation
