富水大粒径砂卵石地层盾构下穿北三环及DN2400给水管施工技术

Construction Technology of Shield Tunneling Through North Third Ring and DN2400 Water Supply Pipeline in Water-rich Large-size Sandy Pebble Stratum

针对富水大粒径砂卵石地层不稳定性以及管线加固施工难点,通过常规措施优化及施工过程中的精细管理,顺利穿越城市主供水管路,为后续施工提供了参考依据。

Aiming at the instability of water-rich large-size sand and gravel stratum and the difficulty of pipeline reinforcement construction, through the optimization of conventional measures and the fine management during construction, the city’s main water supply pipeline was successfully passed, which provided a reference for subsequent construction.