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。
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.
室内、隧道、电缆沟内或直脉地下，能够承受一定的机械外力和一定的拉力。
For laying indoor, in tunnel, cable French, well or direct in ground, able to bear external mechanical forces and certain pulling force.
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