Displacements in each construction step of the excavation in opposite directions are also determined.
同时对相向同步开挖的各施工步进行了位移分析。
2
According to the final results of analysis, a reasonable excavation length of inverted arch in one step was put forward and applied to the construction of multi-arch tunnel in loess.
最后提出了最佳的黄土仰拱一次性开挖长度，并应用于黄土连拱隧道的施工。
3
Step-slope excavation is suitable for the project of which the foundation has better soil properties, lower excavation depth or enough site space for step-slope.