Abstract The aim of the present study is to identify details of the mechanisms of rock disaggregation caused by AWJ cutting. Experimental studies were performed to investigate the effects of AWJ on the cutting process of four types of rocks and to evaluate the influence of their properties on the AWJ removal mechanisms. In addition to SEM analysis, petrography was performed to characterize the kerfs generated by the AWJ. The results show that the removal mechanisms and thus the efficiency of cutting strongly depend on the rock types and their microstructures. Distinct patterns of kerfs were observed for hard-to-machine rocks and non-hard-to-machine rocks. However, these patterns are not necessarily explained by the same rock features. In some situations, high cutting rates may depend more on the impact action of the jet (e.g. quartz sandstone) or the erosion capacity of the jet (e.g. marble).

中文翻译：

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磨料水射流切割岩石切缝的微观研究

摘要 本研究的目的是确定由 AWJ 切割引起的岩石解聚机制的细节。进行了实验研究，以研究 AWJ 对四种岩石切割过程的影响，并评估其特性对 AWJ 去除机制的影响。除了 SEM 分析外，还进行了岩相学以表征 AWJ 产生的切口。结果表明，去除机制以及切割效率在很大程度上取决于岩石类型及其微观结构。对于难以加工的岩石和非难以加工的岩石，观察到不同的切口模式。然而，这些模式不一定由相同的岩石特征来解释。在某些情况下，高切割率可能更多地取决于射流的冲击作用（例如