The effects on geotechnical properties of rock mass from the constituent particle morphology have been acknowledged since long. Particle morphology is among the most important parameters affecting the mechanical characteristics of rock, such as shear strength, cohesion, friction angle, porosity, groundwater seepage, and angle of repose. This review summarizes the current advancement in numerical simulation-related particle morphology and its impact on the mechanical behavior of rock mass. Several scholars assessed the influence of particle morphology on macroscopic mechanical response using experimental and numerical simulation techniques. The clump particle approach based on discrete elements methods (DEM) reproduces mechanisms between rock particles to illustrate the correlation of mechanical performance and particle morphology. However, this approach presents the statistical limits of particle shape and size distribution of clump particles to rock particles. Particle shape has distinct effect on geotechnical properties of rock; conversely, each descriptor is case sensitive to a specific attribute of shape. The diversity of the outcomes of the conducted study in the geotechnical field revealed an ambiguity associated with the correlation of particle size distribution with the mechanical behavior of rock and granular material. Nevertheless, further research is essential to address some of the issues that have not yet been tackled, few of which are identified throughout this review article.

中文翻译：

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颗粒形态对岩体力学行为的影响

长期以来，人们已经认识到从组成颗粒形态对岩体的岩土特性的影响。颗粒形态是影响岩石力学特性的最重要参数之一，例如抗剪强度，内聚力，摩擦角，孔隙率，地下水渗流和休止角。这篇综述总结了数值模拟相关颗粒形态的最新进展及其对岩体力学行为的影响。一些学者使用实验和数值模拟技术评估了颗粒形态对宏观机械响应的影响。基于离散元素方法（DEM）的团粒方法重现了岩石颗粒之间的机理，以说明机械性能与颗粒形态之间的关系。然而，这种方法提出了块形状到岩石颗粒的颗粒形状和大小分布的统计极限。颗粒形状对岩石的岩土特性有明显的影响。相反，每个描述符对形状的特定属性区分大小写。在岩土工程领域进行的研究结果的多样性表明，与粒度分布与岩石和颗粒材料的力学行为之间的相关性存在歧义。尽管如此，进一步的研究对于解决一些尚未解决的问题是必不可少的，在本综述文章中很少发现这些问题。相反，每个描述符对形状的特定属性区分大小写。在岩土工程领域进行的研究结果的多样性表明，与粒度分布与岩石和颗粒材料的力学行为之间的相关性存在歧义。尽管如此，进一步的研究对于解决一些尚未解决的问题是必不可少的，在这篇综述文章中很少发现这些问题。相反，每个描述符对形状的特定属性区分大小写。在岩土工程领域进行的研究结果的多样性表明，与粒度分布与岩石和颗粒材料的力学行为之间的相关性存在歧义。尽管如此，进一步的研究对于解决一些尚未解决的问题是必不可少的，在本综述文章中很少发现这些问题。