摘要
隧道穿越煤系地层,围岩软弱,钢拱架间距和锚杆长度是影响初期支护安全和隧道结构稳定的重要因素。选取三联隧道煤系地层段典型断面,设定不同的工况,进行二维数值计算,研究钢拱架间距和锚杆长度的变化对煤系地层隧道初期支护安全性的影响,分析了三联隧道煤系地层段合理的钢拱架间距和锚杆长度,研究成果可为类似工程提供借鉴。
The surrounding rock in the tunnel through coal-bearing strata is weak.The steel arch spacing and bolt length are important factors affecting the safety of initial support and the stability of tunnel structure.Typical sections of Sanlian Tunnel through coal-bearing strata are selected,different working conditions are set,and the two-dimensional numerical calculation is carried out.The influence of the change of bolt length and section steel spacing on the initial support safety is analyzed.The reasonable section steel spacing and bolt length of Sanlian Tunnel are analyzed.The research results can provide reference for similar projects.
作者
王一鸣
Wang Yiming(Henan University of Engineering,Zhengzhou Henan 451191 China)
出处
《石家庄铁路职业技术学院学报》
2019年第4期14-18,共5页
Journal of Shijiazhuang Institute of Railway Technology
关键词
煤系隧道
钢拱架间距
锚杆长度
初期支护
tunnel through coal-bearing strata
the spacing of steel arch
anchor length
initial support
