Abstract：
Freezing method is adopted to reinforce the soil of left line pump room at interval between the starting station and Wuzi University Station of Beijing Subway Line 6 Phase II project. Drilling and freezing equipments and frozen curtain are accepted during construction, and inspection is carried out before and during earth excavation. The freezing construction lasts 9 months. The soil is effectively reinforced, and ground settlement and influence on surrounding buildings are controlled.
