隧道超欠挖力学效应的研究

Study on the Mechanic Effect of Over-excavation and Owing-excavation of Tunnel

分析了超挖和欠挖对隧道围岩应力状态的影响 ,计算了不同超挖时的围岩应力集中系数 ,讨论了隧道超欠挖的力学标准 ,提出了控制超欠挖力学效应的工程措施。

It analyzes the influence of over excavation and owing excavation to the stress of the country rock of tunnel,calculates the coefficient of stress convergency of the country rock under different conditions of over excavation.It also discusses the mechanic standard of over excavation and owing excavation of tunnel and puts forward,some engineering controlling measures for the mechanic effect of over excavation and owing excavation.