Application of Freezing Method in the Geology Disaster Treatment of Fault Fracture Zone

Abstract

Fault rupture zone inrush of water and mud is the most serious geological disaster of the tunnel and underground engineering. The disaster has a direct threat to the progress of engineering and the safety of builders. The Yonglian tunnel appears to multiple inrush of water and mud disaster in the process of construction Geological environment and inrush of mud and water mechanism are expounded to analyze the cause of hazard. The freezing curtain method was made to govern the hazard from ZK91+330 to ZK91+355 of left tunnel. According to the stratigraphic characteristics, freezing refrigeration system design, main technical requirements and parameters of freezing reinforcement and the construction method were determined to govern the hazard. The condition of tunnel excavation showed that the surrounding rock is stable. The results of treatment indicated that freezing method is suitable for the treatment of inrush of water and mud. The research result can be applied in the similar projects.