富水砂卵石地层盾构始发引起地面沉降变形分析

摘要

Originating as the key working procedure of shield method,improper handling will be directly related to the surrounding buildings and the safety of construction,initial stage construction success or failure will directly affect the project quality,progress,safety and economic bene-fits. By analyzing the three stages of shield interval starting construction land subsidence caused by the measured data,studied the various stages of the ground subsidence process and its distribution,it is concluded that the relevant conclusions and recommendations,to provide a reference for the similar strata shield initial stage construction.%始发作为盾构工法的关键工序，处理不当会直接关系到周边建筑及施工的安全，始发阶段施工的成败将直接影响到工程的质量、进度、安全以及经济效益。通过分析三个盾构区间始发阶段施工引起地面沉降的实测数据，研究了不同阶段的地面沉降过程及其分布规律，得出了相关结论和建议，可供类似地层盾构始发阶段安全施工参考。