单拱四车道公路隧道全断面开挖力学特性分析

Analysis of mechanical properties of full section excavation of single arch four-lane highway tunnel

通过对材料计算参数的确定,采用有限差分程序对四车道公路隧道全断面开挖过程进行数值模拟,分析了开挖过程中围岩和支护的力学响应,同时提出了应急措施,以确保隧道施工安全。

Through the determination of the calculation parameters of the material, the author carries out the numerical simulation of the full section excavation process Of the four-lane highway tunnel by using the finite difference program, analyzes the mechanical response of the surrounding rock and the support in the excavation process, and puts forward the emergency measures to guarantee the tunnel construction safety.