随着中国成为全球最大的煤炭生产国之一，煤矸石作为煤炭开采过程中的废弃物，其大量堆积对环境构成了严重威胁。通过动三轴试验，探索高频荷载下煤矸石集料的非线性本构特性，收集了不同来源的煤矸石以及作为对比材料的粉细砂，进行了详细的力学性能测试，包括回弹模量的测定和模型分析。结果表明：煤矸石在受到周期性动态荷载时，其回弹模量受体应力和八面体剪应力的显著影响，显示出明显的非线性行为。通过比较MEPDG（mechanistic-empirical pavement design guide，路面力学经验设计方法）、Uzan、k-θ预测模型，指出Uzan模型在本研究的条件下表现出较好的适用性和预测精度。研究成果为煤矸石的工程应用提供了科学依据，有助于推广煤矸石在环境可持续工程中的应用，减少环境污染，同时降低工程成本。

As China becomes one of the world's largest coal producers, coal gangue, a waste product during coal mining, has been accumulated in large quantities, posing a serious environmental threat. The nonlinear constitutive characteristics of coal gangue aggregates under high-frequency loading were investigated through dynamic triaxial tests. Coal gangue samples from various sources, along with fine sand as a comparative material, were collected and subjected to comprehensive mechanical property tests, including resilient modulus measurement and model analysis. It is found that the resilient modulus of coal gangue under cyclic dynamic loading is significantly influenced by confining stress and octahedral shear stress, exhibiting evident nonlinear behavior. By comparing the MEPDG(mechanistic-empirical pavement design guide), Uzan, and k-θ predictive models, it was determined that the Uzan model demonstrated better applicability and predictive accuracy under the conditions of this study. The findings are expected to provide scientific support for the engineering application of coal gangue, contribute to the promotion of its use in environmentally sustainable engineering, reduce environmental pollution, and lower construction costs.