为探究黄土−矿渣基胶结充填材料在不同水胶比及养护龄期下的力学性能、破坏模式和能量演化特征，分别对黄土−矿渣基胶结充填材料在4组水胶比和5个龄期条件下进行坍落度试验和单轴压缩试验。结果发现：随着胶结材料水胶比的增大，充填材料的坍落度和扩展度增大；材料的峰值强度与水胶比呈负线性相关关系，与养护龄期呈指数型非线性相关关系；充填材料的破坏模式整体上为剪切破坏，且水胶比越小、养护龄期越长材料破坏程度越大；胶结材料破坏过程可分为压密、弹性、裂纹稳定扩展、裂纹持续扩展和峰后破坏5个阶段。

In order to investigate the mechanical properties, damage mode and energy evolution of loess-slag-based cementitious filling materials under different water-cement ratios and curing ages, slump tests and uniaxial compression tests were conducted on loess-slag-based cementitious filling materials under four sets of water-cement ratios and five ages, respectively. It was found that the slump and expansion of the filling material increased with the increase of water-cement ratio. The peak strength of the material was negatively linearly correlated with the water-cement ratio and exponentially nonlinearly correlated with the age of curing. The damage mode of the filling material was generally shear damage, and the smaller the water-cement ratio and the longer the age of curing, the greater the damage of the filling material. The damage process of cemented material can be divided into five stages: compression density, elasticity, stable crack expansion, continuous crack expansion and post-peak damage.