Combining with the geological conditions of a building foundation pit engineering in Suzhou. This paper introduced the foundation pit support scheme using bored piles with three layers of reinforced concrete support as the support structure, the outer side of support pile arranged single row three shaft deep mixing pile as the water stop curtain, and analyzed the site monitoring results, pointed out that the foundation pit scheme achieve good construction effect.%结合苏州某大厦基坑工程的地质条件，对采用钻孔灌注桩加三层钢筋混凝土支撑作为支护结构，支护桩外侧设置单排三轴深搅桩作为止水帷幕的基坑支护方案作了介绍，并对现场监测结果进行了分析，指出该基坑方案达到了良好的施工效果。
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