7.3 Study on Slurry Ratio and Film Formation of Shield Tunneling Across the Middle of Yangtze River
Mud not only undertakes the heavy responsibility of maintaining the stability of excavation face，but also undertakes the important task of carrying slag soil.The selection and control of mud parameters are of great significance to the normal and safe construction of slurry shield.Especially in the construction of the punching section，due to the shallow overburden thickness，the slurry parameters must be strictly controlled to maintain the stability of the excavation face.
