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干密度是表征黄土地基振密、挤密处理后主体紧密程度的一个重要物理指标。本文通过对不同于密度的非饱和击实土样的震陷试验，研究了于密度对击实黄土震陷性的定量影响规律，建立了击实黄土的震陷曲线方程，得到了不同振次下干密度与震陷系数的定量关系。文中提出了由干密度算不同振次和任一动应力下击实黄土震陷系数的经验公式，并为黄土地基抗震陷处理初步提供了干密度、波速、标贯和孔隙比等方面的标准．
Dry density is an important physical indicator to characterize the compactness of the loess foundation after compacting. In this paper, we quantitatively study the quantitative effects of density on the subsidence of compacted loess by seismic tests on unsaturated compacted soils with different densities. The seismic curve equations of compacted loess are established, and different vibration times Quantitative Relationship between Dry Density and Seismic Collapse Coefficient. The empirical formula for calculating the seismic collapse coefficient of loess under different vibration frequencies and any dynamic stress was proposed in this paper. The dry density, the wave velocity, the standard penetration and the porosity ratio of the loess foundation were provided preliminarily.