在珠江三角洲采用水泥粉喷搅拌桩加固软土地基，效果较理想，取得了初步进展．以15％～17％掺入比的水泥粉，采用二次充分搅拌的施工工艺，当桩体下端置于硬土层上时，间距1．1m左右的复合地基承载力一般可达150～180kPa．通过室内外试验验证，28d室内强度达到最终值的60％～70％．水泥粉喷搅拌桩可初步解决软土地基跳车问题，但必须严格把好施工质量关，否则易造成事故． In the Pearl River Delta, cement powder jet mixing piles were used to reinforce the soft soil foundation. The results were satisfactory and initial progress was made. The cement powder with the ratio of 15% to 17% is mixed, and the construction process with two times full stirring is adopted. When the lower end of the pile is placed on the hard soil layer, the bearing capacity of the composite foundation with the distance of about 1.1m is generally up to 150-180kPa. . Through indoor and outdoor tests, 28d indoor strength reached 60% to 70% of the final value. Cement powder spray mixing piles can initially solve the problem of jumping on soft ground. However, it is necessary to strictly control the construction quality, otherwise it may cause accidents.