TRD(等厚度水泥土搅拌墙)工法为一种新的施工方法,可用作深基坑围护的止水帷幕结构,具有施工深度大、止水效果好等特点。全封闭的水泥土搅拌墙在上海前滩企业天地深基坑中用作止水帷幕后,对墙体强度和实际止水效果进行了检测,结果证明,TRD工法技术上可行,强度满足设计要求,实际止水效果可靠,从而减少了抽降承压水对周边环境的影响。 TRD method is a new construction method, which can be used as a water-proof curtain curtain structure for deep foundation pit support. It has the characteristics of large construction depth and good water-stopping effect. After the fully enclosed cement-soil mixing wall was used as a water-stopping curtain in the Deep Foundation Pit of Shanghai Qiantan Enterprise World, the strength of the wall and the actual water-stopping effect were tested. The results show that the TRD method is technically feasible and the strength meets the design requirements , The actual sealing effect is reliable, thus reducing the impact of pumping pressure on the surrounding environment.