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双连拱隧道开挖过程中围岩变形和应力变化情况复杂,施工难度大,有必要采取一些措施为实际施工提供技术指导,确保施工的安全。利用数值模拟方法,计算分析了南京九华山隧道穿越破碎山体的受力、变形情况,分析结果表明,开挖过程中围岩能够保持稳定,为实际施工提供了理论指导和参考,也为这类问题的研究提供了一条新的思路。
During the excavation process of double-arch tunnel, the deformation and stress changes of surrounding rock are complex and the construction is difficult. It is necessary to take some measures to provide technical guidance for practical construction and ensure the safety of construction. The numerical simulation method is used to calculate and analyze the stress and deformation of the Jiuhuashan tunnel across the mountain in Nanjing. The analysis results show that the surrounding rock can be kept stable during excavation, providing theoretical guidance and reference for practical construction. The study of the problem provides a new idea.