shallow tunnel by excavation

基本解釋

The ground settlement of a shallow metro tunnel by excavation has important effect on the construction safety.
地鐵隧道附近的施工活動，會影響到隧道的正常使用和結構安全。
Based on the safety analysis of urban subway tunnel by shallow excavation, the causation of hurting the safety is discussed. A set of indexes for safety valuation is presented.
筆者在總結淺埋暗挖法修建城市地鐵隧道安全性問題基礎上，分析了危害安全性的病害原因，提出了安全性評估指標；
It may avoid stopping transportation and polluting city environment to have excavation in the open replaced by shallow-concealed excavation for large scale underground cable tunnel construction.
采用淺埋暗挖法施工地下電纜隧道取代明溝開挖法，可避免阻斷交通、污染城市環(huán)境。