Construction and Optimization Design for Subway Shaft Excavation

Abstract:

The general procedures for constructing subway are as follows: first excavate the shaft, then horizontal pass, finally ingate. The original design for the shaft excavation in Subway Station at Guangzhou Railway Station of Track Traffic Line 5 of Guangzhou was optimized to directly open the ingate by enlarging the lower section of shaft. The time limit for the project was shortened meanwhile the stability of the structure was ensured. The backfill concrete volume after second liner was reduced. That can be used for reference by similar project.