While building a tunnel through the mountain, the workers discovered an underground lake.
当工人们在修建一个穿过山的隧道时，他们发现了一个地下湖。
2
The application scheme of the artificial freezing method in Xuanwu Lake subaqueous highway tunnel construction and the constructing procedure of the freezing method are introduced.
介绍了人工冻结法在玄武湖水下交通隧道中的应用方案以及冻结法的施工工艺。
3
Moreover, the tunnel project under the lake to some extent re-emphasizes car-dependency with likely congestion near the exits, especially at peak days.