研究结论:试验结果表明: 地基加固结束时的实测沉降量达1 800 mm，地基平均固结度达95%; 实测水平位移很小，在整个加载过程中，地基一直处于安全状态，说明地基处理方案是合理可行的。现场实测地基加固后的吹填淤泥十字板强度达12 kPa，吹填淤泥的土性指标得到了不同程度的改善，地基加固达到了预期的加固效果; 土工格栅等土工合成材料的应用，解决了新吹填淤泥上难以直接堆载的技术难题，在类似工程中可进一步推广应用; 新吹填淤泥地基单位厚度的压缩量超过200 mm/m，说明吹填淤泥地基的压缩变形属于大变形问题，理论计算时应考虑这一因素。

Research conclusions: The test results indicate that the observed settlement of the foundation is up to 1800 mm，and the mean consolidation degree of the foundation is 95%． The observed horizontal displacement is very small． During the whole loading process，the foundation has been in the state of safety． It is shown that the treatment scheme for the foundation is rational and feasible． The observed vane strength of the new hydraulic fill muck of the foundation reaches 12 kPa after improvement． The soil indices of the new hydraulic fill muck are improved to some extent． The anticipative efficiency is achieved for the foundation improvement． The utilization of geosynthetic materials such as geogrids successfully solves the technical problem of difficulty of direct surcharge on the new hydraulic fill muck，and it can be further popularized in similar projects． The per － unit － thickness compression amount of the foundation with new hydraulic fill muck is larger than 200 mm/m，indicating that the compressive deformation of the new hydraulic fill muck belongs to large deformation problems and it should be considered in theoretical calculations．