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.
The joint roughness coecient(JRC)method was suggested by International Society for Rock Mechanics toestimate joint roughness in1978.Although this method is widely used in engineering practices,there is a shortcoming ofsubjectivity and experience relied on investigator.So,the research works about quantifying joint roughness were developedby authors in the world.In this article,firstly,we introduced the research progress about quantitative characterizationon both joint profiles and discontinuities roughness,and summarized the results of relationship between the parametersand JRC.Secondly,we evaluated the essential properties and applicability of each parameter,pointed out the problemsabout the parameters in obtained process including sampling interval influence,deciding triangulation of an elementarysurface and determining the weight of each parameter in the comprehensive parameters method.At the same time,wegave the author’s ideas of solving the problems.In addition,we discussed anisotropy and size e ect of surface roughnessin detail,on which are focused by researchers.Finally,we predict that fractal dimension remain a method to describe surface roughness and3D printing technology can be helpful to research anisotropy and size e ect of rock discontinuitiesroughness.
作者
陈世江
朱万成
王创业
张飞
Chen Shijiang;Zhu Wancheng;Wang Chuangye;Zhang Fei(Institute of Mining Research,Inner Mongolia University of Science and Technology,Baotou 014010,Inner Mongolia,China;School of Resources and Civil Engineering,Northeastern University,Shenyang 110819,China)
出处
《力学学报》
EI
CSCD
北大核心
2017年第2期239-256,共18页
Chinese Journal of Theoretical and Applied Mechanics
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
关键词
岩石力学
岩体结构面
粗糙度
研究进展
rock mechanics
rock discontinuities
joint roughness
research progress
作者简介
陈世江，副教授，主要研究方向：采矿工程与岩石力学. E-mail：chenshijiang 2003@163.com
