The settlement of ground surface due to the construction of tunnel is the main cause which results in the damage of the appearance and the function of buildings on the groud surface.
地铁隧道施工引发的地表沉降是造成各种地表上部建筑物产生外观及功能上损害的主要原因。
参考来源 - 施工过程中浅埋隧道自身性状及上部建筑物沉降变形的数值分析And then, it analyzes the deformation mechanism of the soil under the dewatering and the influencing factors of the earth's settlement. It concludes existing fundamental theory of settlement of ground surface induced by dewatering in foundation pit.
然后总结分析了降水作用下土体的变形机理和土体的沉降影响因素,归纳了现有的基坑降水引起的地面沉降基本理论,通过数学分析提出了由降水引起地下水水头压力变化、含水层颗粒迁移、含水层压缩和水体的膨胀的更具普遍意义的地下水运动方程,并基于总应力不变和总应力变化对基坑降水作用下的有效应力进行了分析。
参考来源 - 基坑降水引起的地面沉降分析·2,447,543篇论文数据，部分数据来源于NoteExpress
It was shown that the changes in effective stresses induced by dewatering and seepage are the main factors causing settlement of ground surface.
研究表明，基坑降水及由此引发的渗流使土中有效应力改变是基坑周围地表发生沉降的根本原因。
By reducing the permeability of soil at the bottom of pit and selecting optimal dewatering depth, the settlement of ground surface can be well controlled.
采用降低坑底土层渗透性的措施和选择最佳的降水深度能有效地控制坑外地表的沉降。
In excavation of shallow buried tunnel, it should be carry out to decrease the footage to prevent collapse, which shall benefit to diminish the settlement of ground surface.
浅埋隧道开挖时应严格控制地表沉陷，减小循环开挖进尺和防止塌方。
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