【摘要】 本文以上海市中环线上中路越江隧道Φ14．87m超大直径隧道工程为背景,阐述了超大直径气压平衡泥水盾构推进施工过程中,不同施工工况条件下周围土体的土压力、水压力和土体位移等参数的变化过程,分析了超大直径泥水盾构在软土地区施工时,盾构施工对周围土体的影响规律,给出了不同断面上土体的沉降历时曲线,为今后同类工程施工提供了有益的借鉴。更多还原

【Abstract】 This paper describes the fluctuation trends of tunnelling parameters,such as ground/water pressures and ground movement under various work regimes,surrounding the places where a Beton’Air(r)flurry machine is passing by,against the background of Middle Ring Roadway Project implementation in Shanghai,at a cross river link where this particular shield ofΦ14.87m super large diameter is employed.After analysing the impact behaviours on surrounding ground by shield tunnelling,it is hoped to provide useful lessons to similar projects implementation in the coming days.更多还原