About the author:

1. CCCC Second Harbor Engineering Co., Ltd., Wuhan,Hubei 430040, China;2. CCCC SHEC（Kunming）Construction Co., Ltd.,Kunming,Yunnan 650000, China

Abstract:

In view of the complex construction process, frequent mechanical conversion and highconstruction safety risk of the main tunnel with large cross section, taking Huangshan Street Station ofUrumqi subway as the background, the stress and displacement of surrounding rock and supportstructure during the construction of the main tunnel were analyzed by numerical simulation. The resultsshow that:During the construction of the cross passage to the main tunnel, the support form of crosspassage frame beam+intersection partition wall is adopted, and the displacement and stress during theconstruction process are basicallywithin a controllable range. During the construction process of thecross passage to the main tunnel, the removal of temporary supports is a key process for the entire wallbreaking construction. During the construction process, attention should be paid to strengthen in-situmonitoring.