runnel

Different from building a single tunnel, building interchange tunnels will encounter many Problems that does not exit during building a single runnel. Furthermore, the underground interchange tunnels is at its early stage, so corresponding design and construction experiences are seriously penurious.

与修建单一的隧道不同，要在地下修建多条互通立交的高速公路隧道，将会遇到各种单一隧道中不存在的问题，而且目前这方面的设计、施工均没有直接的经验，难度将会大大增加。

They used waterproof cement to prevent water from seeping through the roof of the runnel.

他们用防水水泥来防止水从屋顶的排水通道里渗透.

Finally we set up three-dimensional space model to simulate the space effect during tunnel construction, analyze the transaction between the left runnel and the right tunnel, and also analyze the deformation and stability of mid-partition.

最后建立了三维空间模型，对连拱隧道开挖时的空间效应、左右洞的相互影响，以及中隔墙的变形和稳定性进行了模拟分析。

Being lack of scientific risk assessment tools and scientific risk management system, the safety accidents occur occasionally in the process of city runnel construction.

由于缺乏科学风险评估工具和科学的风险管理体系，在现有城市隧道建设过程中，安全事故时有发生。