测定湿陷性黄土的自重湿陷系数时,首先需求出各试样的饱和容重γ_H,以确定其饱和自重压力。求γ_H值可分为试验室实测和计算两种方法。前者费事费时,后者则比较繁琐,且易出错。通过实践和大量统计分析,得知含水量ω及天然容重γ对饱和容重γ_H的影响有如下规律(表1): When determining the collapsibility coefficient of collapsible loess, the saturated bulk density γ_H of each sample is first required to determine its saturated self-weight pressure. The γ_H value can be divided into two methods: the actual measurement and the calculation in the laboratory. The former is time-consuming and the latter is tedious and error-prone. Through practice and a large number of statistical analysis, it is known that the effect of water content ω and natural bulk density γ on the saturated bulk density γ_H is as follows (Table 1):