CHINA MINE ENGINEERING

The main shaft, auxiliary shaft and ventilation shaft of Ruihai Mine are close to the coastline. According to the special strata in this area, the vertical shafts are constructed by freezing shaft-sinking method, and the freezing project has been completed now. Combined with the engineering practice, this paper summarizes and analyzes the key points of the technical layout of the freezing hole in the geological environment with large flow rate and high salt content near the sea.