某合流泵房及调蓄池基坑,采用两墙合一的地下连续墙围护、利用主体结构的梁系作为支撑的部分逆作法方案。在施工过程中,应用时空效应,通过理论分析和安排合理的施工程序,并严格地控制开挖时间,从而取消了最后一道临时钢支撑,缩短了施工周期,最终顺利完成了基坑开挖施工任务。 A confluence pumping station and storage pit foundation pit, the use of two walls together underground continuous wall enclosure, the use of the main structure of the beam system as part of the support of the counter-program. In the construction process, the application of space-time effect, through the theoretical analysis and arrangements for a reasonable construction procedures, and strictly control the excavation time, thus eliminating the last temporary steel support, shorten the construction period, the final successful completion of the excavation of the foundation pit task.