地连墙与自凝灰浆防水墙组合防渗新技术的应用及分析

Application of a Novel Anti-seepage Technology by Combination of Diagraph Retaining Walls and Cutoff Wall with Self-setting Grout

地连墙与自凝灰浆防水墙配套使用是一种新型的深基坑支护形式,相对传统的基坑支护形式具有经济节约和防渗效果佳等优点。结合南京华新城AB地块深基坑工程应用实例,根据其复杂的工程特点,从防渗、力学性能、造价等方面论证了地连墙与自凝灰浆防渗墙配套使用的可行性及优点,并结合工程实际对自凝灰浆防渗墙的施工工艺和技术要点做了详细的介绍。

The compound use of diaphragm retaining walls and cutoff wall with self-setting grout is a novel supporting tech- nology in deep foundation pit construction, which has good effect in seepage control with low cost. Based on the project ex- ample of deep foundation pit of Walsin Lihwa AB site, the application feasibility and the advantages were demonstrated in mechanical behavior, seepage control and the cost. Furthermore, the paper specifically introduces the construction process and technical points.