在施工中开挖基坑时，当施工场地狭窄或地质条件较差时，对于深基坑不可能采用放坡开挖，应采用支护结构。将水泥土搅拌桩搭接成块状或格栅状的水泥土挡土墙，非常适用于基坑面大而无法支撑的工程，加固效果好，墙体稳定。 When excavating the foundation pit during construction, when the construction site is narrow or the geological condition is poor, it is impossible to use a grading excavation for the deep foundation pit, and the supporting structure should be adopted. The cement-soil mixing piles that are cemented and cemented into a block or grid shape are very suitable for the construction of large-scale and unsupported foundation pits, with good reinforcement effect and stable wall.