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.
采用浅埋暗挖法施工地下电缆隧道取代明沟开挖法，可避免阻断交通、污染城市环境。
This project underground Garage of Yindu Garden in Chendu Has a large floor area, complex structural shape and deep excavation of foundation pit.
成都银都花园地下车库工程建筑面积大，结构形状复杂，基坑开挖深。
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