Abstract
With such characteristics as deep buried, complex geological conditions and sensitive surrounding environment, a metro section lateral pump house in Zhengzhou is conducted using horizontal ground freezing reinforcement method within metro tunnel, combined with mine excavation and lining. In order to ensure the expected effect of freezing reinforcement, BIM technology is applied in layout test of freezing holes. A 3D parameterized freezing pipe model adapted to stakeout data is build, and mathematical relationship of main model parameters is obtained. The rationality of freezing hole layout is verified through collision detection analysis and formation prediction analysis of frozen soil wall, providing reference for application of BIM technology in freezing design of complex cross passage.
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