根据实际工程地基强夯处理的试验资料 ,分析了强夯对土体密度、压缩性、湿陷性等性质的影响 ,探讨了强夯法处理湿陷性黄土地基的工程效果及有效影响深度 ,评价了目前国内外几种常用的影响深度计算公式的适应性 ,提出了适用于关中西部黄土地区的影响系数及其定量取值范围 According to the experimental data of dynamic compaction treatment of actual engineering foundation, the influence of dynamic compaction on the properties of soil density, compressibility and collapsibility is analyzed, and the engineering effect and effective depth of dynamic compaction method on collapsible loess foundation are discussed. This paper evaluates the adaptability of several commonly used depth-of-influence formulas at home and abroad, and puts forward the influence coefficient and its quantitative range suitable for loess area in western Guanzhong