同马山隧道斜井进正洞挑顶施工技术

摘要

通过贵广铁路客运专线同马山隧道1号斜井进正洞挑顶施工实践,详细介绍了砂质板岩隧道反挑法挑顶施工的工艺和特点,并阐述了其施工注意事项,为类似隧道挑顶施工提供指导。%Based on roof brushing construction practice of inclined shaft No.1 of Tongmashan tunnel crossing main tunnel of Gui-Guang passenger special railway line,the paper introduces roof brushing construction technology and characteristics of inverse packing method in sandy rock tunnel in detail,and describes matters needing attention in construction,which has provide guidance for similar tunnel roof brushing construction.