以宁夏省道305线黑城至海原公路为例，介绍了湿陷性黄土的成因、分类以及处治原则，并对不同类别、湿陷等级、分布范围（层厚）的湿陷性黄土处理采取了不同措施，对公路湿陷性黄土地基处理的设计和施工有一定的指导和借鉴作用。%Taking Heicheng-Haiyuan highway on Ningxia provincial highway line No. 305 as an example,the paper introduces collapsible loose causes,classification and processing principles,and adopts various collapsible loose processing measures in light of different categories,collapsi-ble grade and distribution scope(layer thickness),which has certain guiding role for processing collapsible highway loose foundation in aspects of design and construction.
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