在对一些城市建筑密集且富含地下水的地区进行基坑支护设计时，不仅要考虑基坑自身的稳定问题，还应确保基坑支护设计方案安全适用、经济可行。根据某基坑工程，笔者首先分析了工程的基本概况以及旋喷桩支护方案，并详细介绍了旋喷桩的施工注意事项。%In the foundation pit support design for some reg-ions has dense city buildings and rich of groundwater, not only to consider the stability of deep foundation pit itself, should also ensure the foundation pit support design scheme is safe and economic and feasible. According to a foundation pit engi-neering, the author first analyzes the basic situation of project as wel as the jet grouting pile supporting scheme, and detailed introduces matters needing attention in the construction of jet grouting pile.
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