Arrange personnel on manual excavationline rather than taking mechanical excavation.
在人工开挖路线上，安排人员进行开挖，不得机械开挖。
2
Therefore, the survey key of excavationline is to control horizontal and vertical deviations of tunnel axis.
因此，TB M掘进线路测量关键是控制轴线不发生横、竖向偏移。
3
ANSYS software has been applied successfully in construction of deep foundation pit excavation in Shanghai South Station reconstruction project of Shanghai Metro Line No 1.