压密注浆在深厚杂填土场地基坑止水帷幕的应用

Pressure Grouting Technology in Water Curtain of Excavation of Deep Miscellaneous Fill

以苏州某基坑工程止水帷幕设计、施工为例,详细论述了压密注浆在深厚杂填土场地作止水帷幕的原理、可行性、主要工艺参数、施工流程和适用条件,并与采用双轴搅拌桩止水的原设计方案的经济性和合理性进行了对比分析。结果表明,在深厚杂填土的狭小场地复杂环境基坑工程中,采用压密注浆工艺不仅具有良好的止水效果,且更具有场地适用性和经济性,对类似工程具有一定的参考价值。

This paper takes the design and construction of a foundation pit project in Suzhou city as an example, the principle, feasibility, main technological parameters, construction process and suitable conditions of the grouting as water curtain in deep and miscellaneous fill site are discussed in detail. We also analyzed the economy and rationality between the grouting plan and the original design that used the double mixing pile to stir the water. The results show that, in the complex environmental foundation pit engineering of a small site with deep and mixed soil filling, the compaction grouting process not only has a good waterproof curtain effect, but also has the site applicability and economy. The Successful experience is a valuable reference to similar projects.