随着经济的不断发展，交通基础设施有实现了迅猛发展，进而推动了软弱围岩隧道施工方法的发展。在施工过程中，通过采用三台阶法进行施工，能够有效地降低施工成本，提高工效，同时能够确保施工的安全性和稳定性，进而在一定程度上为大断面软弱围岩隧道施工提供参考依据。%With the development of economy, the transportation infrastructure has also achieved rapid development, thus the of method soft surrounding rock tunnel construction is widely used. In the process of construction, using the three step method, can effectively reduce the construction cost, improve work efficiency, and can ensure the safety and stability of construction. To a certain extent, it provides a reference for large section soft rock tunnel construction.
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