浅埋暗挖法施工沉降分析及措施

Settlement Analysis and the Measures for Shallow Excavation Construction

浅埋暗挖法是城市地下工程中的一种较为成熟的施工方法,大部分软土暗挖隧道采用浅埋暗挖法施工。隧道稳定及地层变形是浅埋暗挖法施工最为重要的2个控制指标。相比隧道的稳定性评价,地层变形的精确预测及控制更为复杂。论文对浅埋挖法沉降机理及沉降的时间、空间特性进行了分析,并结合工程实例对地层变形进行分析,对类似工程中的地层变形具有一定的参考价值。

Shallow excavation is a relatively mature construction method in urban underground engineering. Most of the tunneling in soft soil is carried out by shallow excavation. Tunnel stability and stratum deformation are the two most important control indicators in shallow excavation construction. Compared with the stability evaluation of tunnels, the accurate prediction and control of stratum deformation is more complicated. In this paper, the settlement mechanism of shallow excavation method and the time and space characteristics of settlement are analyzed, and combined with engineering examples, the stratum deformation is analyzed, which has a certain reference value for similar projects.