深基坑开挖对邻近不同埋深管线变形影响分析

Influence of Deep Excavation on the Deformation of Adjacent Pipelines at Various Embedment Depths

为研究深基坑开挖过程中对于邻近管线的影响规律,以郑州轨道交通8号线枣庄站明挖法开挖段工程为例,通过对深基坑开挖过程中周边地下管线的位置进行探测,重点研究了深基坑开挖过程中不同埋深管线的变形规律,研究结果表明:基坑开挖对管线的变形产生影响,并且埋深较深的管线受影响较小。随着基坑开挖时间的不断增加,对管线的影响会逐渐减小。在某些关键施工步骤,周边管线的变形量均会发生较大的变化。地下管线的变形量也会受到基坑开挖方案及支护措施的影响。

This paper presents a case history of influence of deep excavation on the adjacent utilities with embedment depths.The cut-and-cover method was used in the Zaozhuang Station of Zhengzhou Transit Project No.8 Line and the effect of deep excavation on the adjacent pipelines with various embedment depths.The results showed that the deep excavation of the subway station has influence on the deformation of pipeline,and the pipeline with deeper embedment depth is less affected.With the increasing of excavation time,the influence on pipeline will gradually decrease.