节理发育岩体隧道锚杆支护参数优化研究

摘要

Relying on Yaogou tunnel of Inner Mongolia,by using discrete element software UDEC,to study on the effect of circumferential instal-lation range and circumferential spacing of the bolts on deformation and stability of the tunnel structure,further to optimize the parameters of bolts. Changed the design parameters of the original bolts———circumferential installation range 216°,circumferential spacing 1. 0 m,to circumfer-ential installation range 90°,circumferential spacing 1. 0 m,proved the rationality and having a certain reference value to the similar engineering.%结合内蒙古窑沟隧道，通过UDEC离散元软件数值模拟手段研究锚杆环向布置范围、间距对隧道结构变形与稳定性的影响，进而将锚杆原设计参数———环向布置范围216°、间距1.0 m优化为环向布置范围90°、间距1.0 m，并证明了其合理性，对类似工程具有一定的参考价值。