岩质颗粒破碎试验研究进展

Progress in Experimental Study of Rock Particle Crushing

颗粒材料是土木、水利、交通等大型工程中广泛应用的一种建筑材料,在较大外力作用下会产生颗粒破碎现象,影响到工程的强度和变形要求。天然岩质颗粒材料由于其属性及加载方式等因素的影响,其破碎强度和破坏方式具有离散性和多样性的特征。在近百年曲折发展历程中,可将颗粒破碎问题研究划分为三个阶段:初步探索阶段、破碎现象描述阶段和广泛研究阶段。试验研究作为颗粒破碎问题研究的一种重要方法,可归纳为天然材料试验和人工材料模拟试验两类。通过整理两类研究方式的研究重点,讨论了现有方法存在的局限性,提出了基于颗粒破碎问题可能的研究方向。

Granular material is a kind of building material widely used in civil engineering,water conservancy,transportation and other large-scale projects.It will produce particle breakage under the action of large stress.Due to the influence of its properties and loading methods,the crushing strength and failure mode of natural rock particles have the characteristics of discreteness and diversity.In the course of nearly 100 years of research on particle breakage,it can be divided into three stages:initial exploration stage,fragmentation stage and extensive research stage.An important method of experimental study on particle breakage as a research problem,can be summarized as natural materials and artificial materials test simulation test of class two,through the study of key arrangement mode of two kinds of research,the limitations of existing method discussed,put forward the possible research direction of particle breakage problem based on.