The approaching construction for two neighboring parallel tunnels in the numerous underground projects is the most normal and basic type in the development of underground space in city.
在众多地下工程的近接施工中，相邻两孔平行隧道的近接施工是城市地下空间开发中最常见和最基本的近接类型。
Shield tunneling is more and more applied during utilizing and exploiture of city underground space, with the development of urbanization and maturation of shield construction technique in China.
随着社会城市化进程的推进和盾构法技术的成熟，在城市空间的立体开发中，盾构法在隧道工程中的应用越来越多。
The scale of development and utilization of urban underground space expands with the enhancement of urbanization and economy level in a city.
随着经济水平和城市化水平的不断提高，城市地下空间开发利用规模不断扩大。
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