step excavation 开挖台阶
short step excavation 短台阶开挖
micro step excavation 微台阶开挖
step excavation method 台阶分部开挖法
inverse step excavation 反台阶开挖
positive step excavation 正台阶开挖
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。
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。
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.
放坡开挖适用于地基土质较好、开挖深度不深，以及施工现场有足够放坡场所的工程。
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