摘要
结合上海近年来在城市软土密集区盾构穿越施工的实践,对盾构穿越危险房屋、上方及下方穿越运营地铁的施工风险,以及变形控制标准与预测分析方法、土压力、注浆等关键施工工序及参数的控制细节进行了阐述和总结。明确提出:严格的地层损失率限制标准及强有力的监控手段,是化解盾构施工中各种风险的根本;针对特殊地质及环境条件下的盾构设备选型及相关工艺水平的改进与提高,是控制风险的决定性条件。
The environment protection measures adopted in shield tunneling crossing the building,crossing above the tunnel and below the tunnel projects are discussed respectively. The ground movement prediction, control of shield earth pressure, the driving speed and grouting under the above conditions are summarized in detail based on construction practices in Shanghai. This paper proposes that stringent stipulations on controlling the ground volume loss ratio and on strengthened monitoring measures are necessary and substantial for eliminating/reducing the potential construction risks. It is urgently decisive to improve the performance of shield machine and to make it more adaptable to counteracting the complications and difficulties of geological environment.
出处
《城市轨道交通研究》
北大核心
2009年第12期27-33,共7页
Urban Mass Transit
关键词
盾构法
软土
变形预测
环境保护
shield driving method
soft ground
settlement prediction
environment protection
