Construction Technology for Close Range Underpass of Existing Operational Water Diversion Tunnels in Oujiang Diversion Project Tunnel
During the construction process of Oujiang Water Diversion Project,there are challenges such as multiple intersecting buildings,high construction safety risks,and tight construction schedules.In order to complete the tunnel construction on schedule with high quality and quantity,and ensure the safe and stable operation of the Zhaoshandu diversion tunnel,one double shield TBM is used for construction in the project.By formulating a detailed and meticulous construction plan,the tunnel underpass construction was successfully completed,and the Zhaoshandu diversion tunnel operated safely and stably.This article proposes three quality protection measures for excavation quality control,inspection and acceptance,emergency plans,and construction organization from three aspects:pre-crossing preparation,crossing stage,and post crossing control.
water diversion tunnelwearing underneathTBMconstruction technology
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