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本文结合浙江省上三线任胡岭隧道浅埋段,对明挖和暗挖两种施工方案进行了详细的技术经济比较;针对复杂的地质条件,采用了挖孔桩系梁帷幕暗挖施做的施工方案,并利用有限元方法对该方案进行了模拟分析,保证了施工的顺利进行。实践证明,该方法是成功的、可行的,节省了投资,缩短了工期,为浅埋隧道的施工提供了一种新的方法。
In this paper, a detailed technical and economical comparison is made between the two kinds of construction plans of open excavation and undercutting in light of the shallow burial section of Renling tunnel in the upper third of Zhejiang Province. For complex geological conditions, Of the construction program, and the use of finite element method to simulate the program to ensure the smooth progress of the construction. Practice has proved that this method is successful and feasible, saves investment, shortens the construction period, and provides a new method for the construction of shallow tunnels.