Study on the Controlling Technology for Tunnel Construction in Soft and Weak Fault Fracture Zone

Abstract:

With the case of a soft and weak fault breaking segment of Zhengyang tunnel, the study was made on the construction problems of collapse, rock falling from the arch, slurry squeezing out from tunnel face and lining fissuring. Considering the geological conditions, geography position and the construction measures, a controlling technology scheme was made for safe tunnel construction with good practical effects.