The stability of cemented paste backfill (CPB) is threatened by dynamic disturbance, but the conventional low strain rate laboratory pressure test has difficulty achieving this research purpose. Therefore, a split Hopkinson pressure bar (SHPB) was utilized to investigate the high strain rate compressive behavior of CPB with dynamic loads of 0.4, 0.8, and 1.2 MPa. And the failure modes were determined by macro and micro analysis. CPB with different cement-to-tailings ratios, solid mass concentrations, and curing ages was prepared to conduct the SHPB test. The results showed that increasing the cement content, tailings content, and curing age can improve the dynamic compressive strength and elastic modulus. Under an impact load, a higher strain rate can lead to larger increasing times of the dynamic compressive strength when compared with static loading. And the dynamic compressive strength of CPB has an exponential correlation with the strain rate. The macroscopic failure modes indicated that CPB is more seriously damaged under dynamic loading. The local damage was enhanced, and fine cracks were formed in the interior of the CPB. This is because the CPB cannot dissipate the energy of the high strain rate stress wave in a short loading period.

水泥浆回填料（CPB）的稳定性受到动态扰动的威胁，但是常规的低应变率实验室压力试验难以达到该研究目的。因此，使用裂合式霍普金森压力杆（SHPB）来研究动态载荷分别为0.4、0.8和1.2 MPa的CPB的高应变率压缩行为。并通过宏观和微观分析确定了失效模式。准备了具有不同水泥尾比，固体质量浓度和固化年龄的CPB进行SHPB测试。结果表明，增加水泥含量，尾矿含量和固化时间可以改善动态抗压强度和弹性模量。在冲击负荷下 与静态载荷相比，较高的应变率会导致动态抗压强度的增加时间增加。CPB的动态抗压强度与应变率呈指数关系。宏观失效模式表明，CPB在动态载荷下受到的破坏更为严重。局部损伤增强，CPB内部形成细小裂纹。这是因为CPB无法在短的加载时间内消散高应变率应力波的能量。