埋深大、线路长的隧洞采用TBM施工，已成为国际上快速开挖隧洞的主流。
TBM is commonly used for deep buried and long tunnels and becomes prevailing technique for tunnel excavation in international practices. The total length of No.
该方法的最大优点在于前处理简单，能运用于复杂边坡、洞室的快速开挖仿真和体型优化分析中。
The biggest advantage of the method is that the preprocessing is very simple; and it can be used in the excavation simulation and shape optimization for complicated slopes and caverns.
应用反井钻机开挖导井可达到快速安全的效果。
Application of inverse well drill will permit quick and safe excavation of pilot shaft.
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