Research on the Key Technology of Shield Tunneling Through Buildings in Complex Geology
This paper selects the shield section of the access line of a project as the research object,and analyzes the characteristics and main difficulties of tunneling through houses,tunnels and expressways.It uses the earth pressure balance construction mode for excavation,and monitors earth pressure value in real time to ensure the stability of the tunnel.It introduces synchronous and secondary grouting technologies and parameters,fill soil defects and con-trol surface settlement.It conducts multi-point precision monitoring to monitor houses and pipelines in real time.Research results show that the combined application of synchronous and secondary grouting can effectively solve earth pressure problem,which is better than individual grouting,and that multi-point monitoring improves the ac-curacy and systematization of monitoring.These key technical measures provide the basis for similar projects,and contribute to safe construction management and the optimization and application of tunneling construction engi-neering technology.
TunnelTunneling constructionDeformation behaviouShield construction technology
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