Abstract:In the process of urban subway construction, various underground obstacles are often encountered, which is one of the construction difficulties that need to be solved by builders. Based on the Zijingshan station project of phase I of Zhengzhou Metro Line 1, this paper introduces how to deal with an ultra-high voltage power tunnel in the construction process. The practice shows that the recommended scheme can not only ensure the smooth progress of diaphragm wall, support structure and earth excavation, but also ensure the safety of the surrounding environment, which provides a reference for the construction of similar projects in the future.