掘进围岩支护中锚杆密度对巷道支护效果的影响分析

Analysis on the Effect of Anchor Density on Roadway Support for Rock Support in Dug-in Enclosure

由于煤矿围岩掘进过程中,锚杆进行支护的密度不同,对巷道掘进的效率及成本具有重要的影响。采用有限元仿真分析的形式对不同密度锚杆支护的围岩应力及变形进行分析,结果表明,存在最佳的锚杆密度值保证巷道支护的安全性,且能发挥锚杆的最大效用,可以作为锚杆支护设计的依据及参考。

The different densities of anchor rods for support in coal mine rock excavation have an important influence on the efficiency and cost of roadway excavation.The results show that there is an optimal anchor density value to ensure the safety of the roadway support and to maximize the effectiveness of the anchor,which can be used as a basis and reference for the design of anchor support.