在湿陷性黄土地区经常采用土垫层法处理地基.当建筑场地受到限制,土垫层的平面处理范围不够时,采用本文提出的密布灰土桩弥补平面处理范围的不足,加强地基侧面的隔水作用,以保护整个建筑物范围内下部未经处理的湿陷性黄土不受水浸湿,达到了地基处理的目的. In the collapsible loess area, the foundation layer method is often used to treat the foundation. When the construction site is limited and the soil treatment level of the cushion layer is not enough, the dense ash pile proposed in this paper is used to make up for the insufficiency of the surface treatment range, and to strengthen the foundation side separation. The role of water to protect the entire unstructured collapsible loess within the entire building from water soaking achieved the purpose of foundation treatment.