超大跨公路隧道开挖与支护稳定性分析.pdf

26 1 2007 1 Vol.26 No.1 Journal of Liaoning Technical University Feb. 2007 1008-0562(2007)01-0071-03 1 2 1 1 1. 110004 2. 110004 U 455.4 A Analysis of stability about excavation and support of super-span road tunnel 1 2 1 1 WAN Ming-fu HAO Zhe LIU Jian-ping LIU bin 1.College of Resource and Civil Engineering, Northeastern University, Shenyang 110004,China;2.College of Architectural Engineering, Shenyang University, Shenyang 110044,China) Abstract According to the project of Hanjialing tunnel with four lanes in the expressway rebuilt from Shenyang to Dalian, the mechanics action is discussed about the constriction phases by numerical analysis to estimate the security and stability of the rock, support and lining. The numerical analysis result was compared with that of model test and measure result to prove the correction of the numerical analysis, at the same time, the rationality of support parameters and feasibility of excavation were decided. It is proved that the support parameters and excavation method are feasible. It can be referred for the same tunnels in the future. Key words super-span road tunnel numerical analyses model test monitoring and measurement 6.0 m0.5 m×0.8 m30 cm C25 18 0.5 m 22.482 m 50 mm5 mm 5 m 40 cm75 cm C25 [1]]