岩体结构面粗糙度系数定量表征研究进展

发布时间：2018-03-08 12:15

本文选题：岩石力学　切入点：岩体结构面　出处：《力学学报》2017年02期 　论文类型：期刊论文

【摘要】：1978年,Barton提出的节理粗糙度系数(joint roughness coefficient,JRC)被国际岩石力学学会作为评估节理粗糙度的标准方法.然而该方法存在人为估值的主观性缺陷.就此,国内外学者围绕岩体结构面粗糙度定量化表征开展了大量的研究工作.首先,从二维节理轮廓线到三维岩体结构面,系统地阐述了其粗糙度定量化表征方法研究进展,并总结了各方法参数与JRC的关系;评价了各表征参数的本质特性及其适用性;指出了各方法参数获取过程中存在的问题,主要有:采样间隔的影响,三角形单元划分的影响,如何确定综合参数法中各参数的权重;针对这些问题,给出了笔者的一些想法、建议.与此同时,对结构面粗糙度表征的两个热点问题,即各向异性和尺寸效应的研究也进行了详细总结分析.最后,笔者认为:(1)分形维数因是描述自然界复杂几何体的一种简洁有力的工具,其仍是结构面粗糙度定量描述的有效方法;(2)3D打印技术的应用,有望在开展结构面各向异性、尺寸效应研究方面取得突破性进展.
[Abstract]:In 1978, the joint roughness cofficient coefficient proposed by Barton was used by the International Society of Rock Mechanics as the standard method for evaluating joint roughness. However, the method has subjective defects of artificial valuation. Scholars at home and abroad have carried out a lot of research work on quantitative characterization of roughness of rock mass structural plane. Firstly, the research progress of quantitative characterization method of roughness of rock mass is systematically described, from 2D joint contour to 3D rock mass structural plane. The relationship between each method parameter and JRC is summarized, the essential characteristics and applicability of each parameter are evaluated, and the problems existing in the process of obtaining parameters are pointed out, including the influence of sampling interval, the effect of triangular element partition, and so on. How to determine the weight of each parameter in the synthetic parameter method, and to solve these problems, the author gives some ideas and suggestions. At the same time, two hot issues about the characterization of structural surface roughness are discussed. Finally, the author thinks that the fractal dimension factor is a simple and powerful tool for describing complex geometry in nature. It is still an effective method for quantitative description of structural surface roughness. It is expected to make a breakthrough in the research of anisotropy and size effect of structural plane.
【作者单位】：内蒙古科技大学矿业研究院;东北大学资源与土木工程学院;
【基金】：国家自然科学基金(51564038,51464036) 内蒙古自治区自然科学基金(2015MS0548) 内蒙古科技大学优秀青年基金(2016YQL04)资助项目
【分类号】：TU45

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