大断面小净距隧道中间岩柱加固设计和施工措施

Design and Construction Measure for Middle Pillar Reinforcement of Large Section Neighborhood-Tunnel

采用理论分析模型与计算机数值模拟相结合技术,对Ⅴ、Ⅳ类围岩条件下的大断面小净距隧道进行隧道拱顶下沉、地表沉降、中间岩柱位移及围岩稳定性的对比,分析中间岩柱加固方法,为工程设计和施工提供参考和指导。

By-combining the theoretical analysis and computer simulation technology, and coMParing the archtop settlement, surface subsidence and middle rock pillar displacement of a large section shallow neighborhood tunnel under the condition of class Ⅴ and cIass Ⅳ, the method of middle pillar reinforcement was analyzed in this paper. It Provided reference for the design and construction guidance.