摘要
保德煤矿2145底抽巷道受到工程下顺槽掘进的影响,极易出现形变,遭到破坏,进一步加剧变形趋势;采用FLAC3D软件将2145底抽巷道作为对象,对锚杆支护、锚杆等进行比较和分析;分析结果,借助全断面短锚索支护,能够良好的控制巷道围岩形变以及塑性区等,支护效果显著改善;基本满足安全生产需求,且锚索受力更为稳定、均衡。
Aiming at the problem of deformation due to the effect of down entry excavation of the construction at 2145 bottom drainage roadway of Baode Coal Mine,the author introduces the application of FLAC3D to compare and analyzes the bolt support and the bolt as well,which shows that with the assistant of the full section short anchor’s support,the surrounding rock deformation as well as the plastic zone can be better controlled with remarkably improved support effect to meet the product needs basically with more stable and balance force bearing of the anchor cable.
出处
《江西煤炭科技》
2017年第4期142-145,共4页
Jiangxi Coal Science & Technology
关键词
锚杆支护
巷道
围岩形变
bolt support
roadway
surrounding rock deformation
