This paper firstly proposed using ice abrasive water jets (IAWJs) to slot coal seam to ensure the safe exploitation of coal mines. The performances of IAWJs, pure water jets (PWJs) and conventional abrasive water jets (CAWJs) breaking coal were simulated and compared using the coupled SPH-FEM methodology. The findings indicate that the breaking performance of coal samples subjected to abrasive water jets are more obvious than those of coal samples subjected to PWJs, while the performance achieved by CAWJs is slightly more evident than that by IAWJs. Most of the ice particles transformed into pure water after impacting and then flowed away with the backflow, while many abrasives remained in the coal under CAWJ impact. The specific energy consumption of breaking coal by IAWJs is obviously lower than that consumed by PWJs and CAWJs. Accordingly, it can be inferred that IAWJ is a promising technology in coal slotting applications

本文首次提出使用冰磨料水射流（IAWJs）对煤层开槽，以确保煤矿的安全开采。使用耦合 SPH-FEM 方法对 IAWJ、纯水射流 (PWJ) 和常规磨料水射流 (CAWJ) 破碎煤的性能进行了模拟和比较。研究结果表明，磨料水射流作用下煤样的破碎性能比 PWJs 作用下煤样更明显，而 CAWJs 所达到的性能略高于 IAWJs。大部分冰粒在撞击后转化为纯水，然后随回流而流走，而在CAWJ撞击下，许多磨料留在煤中。IAWJs 破碎煤的单位能耗明显低于PWJs 和CAWJs。因此，