Tunnel excavation is one of the common operations in tunnel construction,and its construction method has an important impact on tunnel construction,which needs to be paid attention to by relevant personnel.However,in the actual operation link,the geology of some areas is relatively special,containing more water,which affects the implementation of tunnel construction to some extent.As a professional construction method,the construction method of soil pressure balance shield works through the advanced shield machine to avoid the impact of water-rich formation on the construction.This paper starts with the water-rich stratum,discusses the shield construction method of the water-rich stratum,and analyzes the construction difficulties.On this basis,the construction method is analyzed to ensure the implementation of the operation.
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