软弱围岩中单洞重叠隧道施工技术及研讨

Construction technique of overlapped single tunnels in soft and weak surrounding rocks

单洞重叠隧道施工技术是深圳地铁在国内第一次采用。文章介绍了深圳地铁国老区间北段处于软弱围岩中的浅埋暗挖单洞重叠隧道的施工过程 ,及其在施工中采用的新技术、新工艺。

The construction technique of overlapped single tunnels is the first in China to adopt in Shenzhen subway engineering. This paper introduces the construction process of the overlapped shallow single tunnels embedded in soft and weak surrounding rocks on the north Guo-Lao section of Shenzhen metro by using mining methods, and also the new techniques and crafts adopted.