Study on Anti-buoyancy Design and Engineering Measures for Gas Pipeline in Cross-river Shield Tunnel

摘要

In accordance with the characteristics of structural design of cross-river shield tunnel, the analysis for anti-buoyant stability of gas pipeline in shield tunnel has been conducted, and the design scheme including its corresponding engineering measures to resist the buoyancy of gas pipeline in both shield working shaft and the main subaqueous tunnel are concurrently proposed in this paper so as to guide the installation of gas pipeline and provide reference for the anti-buoyancy design and analysis of gas pipeline in cross-river shield tunnel under similar circumstances.