盾构隧道施工引起的地表沉降及现场监控

SHIELD TUNNELLING INDUCED SURFACE SETTLEMENT AND IN-SITU MONITORING

随着隧道技术的发展，盾构隧道愈来愈成为软弱岩土层或繁忙闹市地区地下工程施工的主要施工方法。但无论盾构隧道施工技术如何改进，其施工引起的地层移动是不可能完全消除的。为此就盾构隧道施工不同阶段引起地表沉降的大小、施工现场监测的内容、实测数据的分析等进行讨论，最后给出一个工程实测实例。

Shield tunnelling has become a main method and been employed more often than ever to construct underground work within weak rock, soil and especially congested urban areas. However, the disturbance to the surrounding soils caused by shield tunnelling is inevitable no matter what improvement is made in the shield tunnelling technology. Considering this, the magnitude of surface settlement under different cases, the content of in-situ monitoring and the interpretation of monitoring data are discussed. A case study is made and can be refered.