摘要
为解决芦沟矿工作面接替紧张的问题,并最大限度回收煤炭资源,决定实施跨巷开采。通过FLAC3D数值模拟研究了工作面推进过程中,回风大巷及运输大巷围岩垂直应力变化规律,并提出采用U形钢棚式支架及锚注支护对巷道进行加固。现场实践表明:巷道变形稳定后,围岩移近量均在可控范围内,验证了方案设计的合理性。
In order to solve the problem of working face replacement tension in Lugou mine, and maximize the recovery of coal resources at the same time, the technique of mining cross over roadway was carried out. The FLAC3 Dsoftware was applied to study the variation of vertical stress in transportation roadway and return airway during face advancing, therefore the U-steel support and boltgrouting support was used to reinforce roadway. Results showed that the roadway surrounding rock deformation amount was controllable, which verify the reasonableness of program design.
出处
《煤炭技术》
CAS
北大核心
2015年第4期44-47,共4页
Coal Technology
关键词
跨巷开采
锚注支护
U形钢支护
数值模拟
mining cross over roadway
bolt-grouting support
U-steel support
numerical simulation
