煤矿安全2019，Vol.50Issue(7)：277-281,5.DOI:10.13347/j.cnki.mkaq.2019.07.065
大断面回采巷道围岩耦合支护技术
Coupling Support Technology of Surrounding Rock in Large Cross Section Roadway
王文才 1王政 1尹旭 1李金刚 1梁素钰1
作者信息
- 1. 内蒙古科技大学 矿业研究院,内蒙古 包头 014010
- 折叠
摘要
Abstract
To study the influence of supporting parameters on the coupling support technology of deep large section roadway, combined with the problem of poor supporting effect of large cross section roadways in Hongmiao Coal Mine, we used FLAC3D 5.0 numerical calculation and established numerical model of deep large section roadway, simulated the variation of stress field between supporting structure of surrounding rock and each supporting structure under different supporting parameters. From the aspects of bolt length, bolt pre-stress, bolt diameter, bolt row spacing and anchor cable length, we analyzed the coupling condition between the supporting structure and the surrounding rock. The results show that: the larger bolt and anchor cable support parameters, the denser row spacing can only increase the coupling between the support body and the surrounding rock in strength and stiffness, but there is no good coupling effect in structure. Finally, a new supporting scheme is designed by selecting the supporting parameters with good coupling effect in strength, stiffness and structure.关键词
支护参数/大断面/耦合支护/应力场/围岩变形Key words
support parameter/large cross section/coupling support/stress field/rock deformation分类
矿业与冶金引用本文复制引用
王文才,王政,尹旭,李金刚,梁素钰..大断面回采巷道围岩耦合支护技术[J].煤矿安全,2019,50(7):277-281,5.
