The construction technique of overlapped single tunnels is the first in China to adopt in Shenzhen subway engineering.
单洞重叠隧道施工技术是深圳地铁在国内第一次采用。
Researching the effect of piles near subway project by excavation for shallow tunnels has become an important issue needed to be resolved in subway engineering construction.
因此研究地铁浅埋暗挖法施工对邻近桥桩的影响，成为地铁工程建设中急需解决的重要问题。
Subway engineering is often influenced by the underground water, therefore, the issue of waterproof decides the durability and sturdy of metro tunnel and the regular operation.
地下铁道工程时刻受到地下水的作用，防水问题不仅影响工程本身的坚固性和耐久性，而且直接影响到地下铁道的正常使用。
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