中文摘要：

结合海河隧道盖挖逆作基坑工程实例，研究了工程的地质概况，采用 ABAQUS 软件对其进行了模拟计算，通过数值模拟结果，分析了围护结构内力变形规律，并进一步分析了其空间效应，得到了一些有意义的结论。

英文摘要：

Combining with the cover and cut top-down foundation pit project of Haihe Tunnel,the paper researches the geological survey of the area,adopts ABAQUS software to have the simulation calculation,analyzes the change law for the enclosure structure,analyzes the space effect, and achieves some conclusion.