灌浆技术加固深基坑回填土的应用研究

Research and Application of Grouting Technique on Deep Foundation Pit of Backfill Soil

针对深基坑回填土密实度低、塌陷问题进行加固研究,提出了纯压式灌浆加固技术在深基坑回填土加固中的应用。得出灌浆加固技术能很好地应用到深基坑回填土的加固中,既提高了回填土的密实度,亦增大了回填土的承载力及抗渗性能,对以后的相似工程推广应用具有理论及实践意义。

Due to the deep foundation pit backfill soil compaction degree is low, backfill soil collapse reinforced research problem, puts forward pure pressure type grouting technology in deep foun- dation pit backfill soil aplication. It＇s shows that the grouting reinforcement technique can be well applied on deep foundation pit of backfill soil reinforcement, not only improves the compactness of backfill soil, also increased the bearing capacity of backfill soil and anti - permeability. It has theoretical and practical significance for the following similar engineering application.