沿空掘巷煤柱优化及加强支护技术研究

Study on Optimization of Coal Pillar and Strengthening Support Technology in Driving along Empty Roadway

为了研究护巷煤柱尺寸的合理性,结合山西某矿孤岛工作面,采用数值模拟的研究方法,探讨护巷煤柱留设合理尺寸的优化,并对工作面煤柱帮进行加强支护。研究表明:煤柱宽度尺寸取20 m较为合理,所设计的煤柱帮加强支护方案能够保证巷道回采期间支护的稳定性。

In order to study the rationality of coal pillar size for protecting roadway, combined with the isolated island working face of a certain coal mine in Shanxi province, the optimization of reasonable size of retaining pillar for protecting roadway is discussed by using numerical simulation method, and the coal pillar wall of working face is strengthened. The research shows that it is reasonable to take the width and size of coal pillar 20 m, and the designed reinforced support scheme can guarantee the stability of roadway support during mining.