The paper describes the collapsible mechanism and evaluation methods of loose,analyzes the action mechanism,properties and appli-cation scope of collapsible loose foundation treatment methods,and puts forward its optimum selection principles,which has provided some guid-ance for collapsible loose foundation treatment.%对黄土的湿陷性机理和评价方法进行了阐述，分析了湿陷性黄土地基处理方法的作用机理、特点及适用范围，并提出了方法的优选原则，为湿陷性黄土地基的处理提供了参考依据。
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