为了研究复合水泥炉渣灰动力特性，通过动三轴试验，测试出不同替换比率下复合水泥炉渣灰的 E_d - ε 曲线。分析应变、围压及替换比率等对动弹性模量的影响规律。得出如下结论：动弹性模量随着应变的增加而递减；应变一定，围压增加，复合水泥炉渣灰土具有较高的动弹性模量；应变一定，提高替换比率，可以增加复合水泥炉渣灰土试样的整体强度。复合水泥炉渣灰作为注浆材料进行土体加固的研究成果，可为其加固体的抗震设计提供科学依据。

To investigate the dynamic characteristics of composite cement slag ash, we analyzed the effect of strain, confining pressure, and replacement ratio on the dynamic elastic modulus through  E_d - ε  curves obtained from dynamic triaxial tests. It was concluded that dynamic elastic modulus was degressive along with the increase of strain; when strain remained unchanged and the confining  pressure increased, the dynamic elastic modulus of the composite cement slag ash soil was larger; when strain remained unchanged and replacement ratio increased, the overall strength of the soil sample was improved. This research could provide scientific basis for aseismic design when the composite cement slag ash is used as grouting material for soil reinforcement.