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首页> 外文会议>(Re)Claiming the Underground Space >The Genoa Underground: construction of the Principe-Caricamento-Le Grazie stretch
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The Genoa Underground: construction of the Principe-Caricamento-Le Grazie stretch

机译：热那亚地下：普林西比-加载-Le Grazie伸展的建设

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摘要

The Principe-Caricamento-Grazie stretch of Genoa Underground System (twin tunnels, 1400 m long), currently under excavation with an EPB shield in heterogeneous ground (loose material, marly-clay and marly-limestone), under water table and very close to the seaside. Each single track tunnel has an excavation diameter of 6.10 m and an internal diameter of 4.9 m. The tunnel overburden varies from 6 m to 12 m, and the route heavily interferes with existing town buildings. According to the design work carried out by Rocksoil S.p.A., Milan, the tunnel lining consists of a first ring of pre-cast concrete segments and of a second cast lining. The two rings are separated by a waterproofing PVC membrane. Ground treatment by cement and chemical grout injections has been used to protect nearby building and Genoa Fly-over Road foundations. MPSP injection system and jet-grouting technologies have been used for these treatments on the sides and around the cavity. A large monitoring program has been applied to control tunneling in urban area.
机译：热那亚地下系统的Principe-Caricamento-Grazie延伸段（双隧道，长1400 m），目前正在非均质地面（松散的材料，马来粘土和马里-石灰石）中用EPB盾构进行开挖，离地下水位很近海边。每个单轨隧道的开挖直径为6.10 m，内径为4.9 m。隧道覆盖层从6 m到12 m不等，该路线严重干扰了现有的城镇建筑。根据米兰Rocksoil S.p.A.进行的设计工作，隧道衬砌由第一环预制混凝土环和第二衬砌组成。两个环由防水的PVC膜隔开。水泥和化学灌浆的地面处理已用于保护附近的建筑物和热那亚天桥的地基。 MPSP注射系统和喷射注浆技术已在侧面和型腔周围用于这些处理。大型监控程序已应用于控制市区的隧道施工。

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