The tunnel deepening for 1 meter takes one day. Three days more - for concrete casting of the walls and the arch.
隧道加深一米需要1天的时间，而浇铸混凝土墙壁和拱顶需要3天多的时间。
2
According to the special structure of precast block of inverted arch for TBM construction tunnel, the dynamic construction state is modeled by FEM with surrounding rock - structure calculating model.
针对TBM施工隧道仰拱预制块的特殊结构，采用围岩-结构模式，进行了模拟施工动态的受力影响计算分析。
3
In this article, the author analyzes and researches bias archtunnel construction technology.