针对干阳沟隧道黄土段顶部围岩支护问题，采用数值模拟方法分别对顶部设置锚杆支护和顶部取消锚杆支护两种支护形式下的隧道围岩进行了计算与分析。结果表明，干阳沟隧道黄土段围岩顶部在取消了锚杆支护后，隧道仍旧处于相对稳定状态，大大节省了该项目的工程投资，为同类工程的设计提供了参考。%Aiming at the retaining structure problem of Ganyanggou tunnel's surrounding rock, numerical simulation is used to calculate and analyses on if there are anchor cables on the top of tunnel's surrounding rock. The result indicated that the top surrounding rock is stable without anchor cable, which greatly saves the project cost and it gives some references to the similar projects.
展开▼
