|
|
|
| ANISOTROPY AND SIZE EFFECTS OF SURFACE ROUGHNESS
OF ROCK JOINTS |
| CHEN Shijiang1，2，ZHU Wancheng2，LIU Shuxin1，ZHANG Fei1，GUO Lingfei1 |
(1. Institute of Mining Research，Inner Mongolia University of Science and Technology，Baotou，Inner Mongolia 014010，China；
2. School of Resources and Civil Engineering，Northeastern University，Shenyang，Liaoning 110000，China) |
|
|
|
|
Abstract The roughness of the joint surface of rocks is notably anisotropic and size affected. To describe it quantitatively remains a difficult problem because of the complex structure of joint surface. The method of geological statistics was used to analyze the anisotropy and the size effects of structural surface of rocks. A method based on the dimensional analysis，JRCv，was proposed to describe the surface roughness of joints using the sill value and variable range of the variogram. Ten sampling sizes from 100 Pixel×100 Pixel to 1 000 Pixel×1 000 Pixel were selected from the central part of the surface to calculate JRCv values. It is found that the rougher the surface in analysis direction is，the larger the value of JRCv. JRCv is thus a good parameter to describe the anisotropy and roughness of joint surface of rock. The JRCv values decrease with increase of the size of the sampling windows. When the sampling windows are larger than a threshold value，the estimated parameters remain constant. Anisotropic properties are influenced by the surface size when the sampling windows are smaller than the threshold.
|
|
Received: 17 April 2014
|
|
|
|
| [1] 夏才初，孙宗颀. 工程岩体节理力学[M]. 上海：同济大学出版社，2002：18–39.(XIA Caichu，SUN Zongqi. Engineering mechanics of rock joints[M]. ShangHai：Tongji University Press，2002：18–39.(in Chinese))
[2] 江洎洧，项 伟，JOACHIM R，等. 基于三维形态空间分析和仿真试验的岩体结构面剪切强度参数研究[J]. 岩石力学与工程学报，2012，31(10)：2 127–2 137.(JIANG Jiwei，XIANG Wei，JOACHIM R，et al. Research on shear strength parameters of structural planes in rock mass based on three-dimensional morphology spatial analysis and simulation tests[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(10)：2 127–2 137.(in Chinese))
[3] ANDRADE P S，SARAIVA A A. Estimating the joint roughness coefficient of discontinuities found in metamorphic rocks[J]. Bulletin of Engineering Geology and the Environment，2008，67(3)：425–434.
[4] BARTON N，CHOUBEY V. The shear strength of rock joints in theory and practice[J]. Rock Mechanics，1977，10(1/2)：1–54.
[5] BARTON N，BANDIS S. Effects of block size on the shear behavior of joints rock[C]// The 23rd US Symposium on Rock Mechanics. Berkeley：[s. n.]，1982：739–760.
[6] FARDIN N，STEPHANSSON O，JING L. The scale dependence of rock joint surface roughness[J]. International Journal of Rock Mechanics and Mining Sciences，2001，38(5)：659–669.
[7] FARDIN N，FENG Q，STEPHANSSON O. Application of a new in situ 3D laser scanner to study the scale effect on the rock joint surface roughness[J]. International Journal of Rock Mechanics and Mining Sciences，2004，41(2)：329–335.
[8] XIE H P，WANG J A. Direct fractal measurement of fracture surfaces[J]. International Journal of Solids and Structures，1999，36(20)：3 073–3 084.
[9] YANG Z Y，DI C C，LO S C. Two-dimensional hurst index of joint surfaces[J]. Rock Mechanics and Rock Engineering，2001，34(4)：323–345.
[10] FENG Q，FARDIN N，JING L，et al. A new method for in-situ non- contact roughness measurement of large rock fracture surfaces[J]. Rock Mechanics and Rock Engineering，2003，36(1)：3–25.
[11] BABANOURI N，NASAB S K，SARAFRAZI S. A hybrid particle swarm optimization and multi-layer perceptron algorithm for bivariate fractal analysis of rock fractures roughness[J]. International Journal of Rock Mechanics and Mining Sciences，2013，60：66–74.
[12] KULATILAKE P H S W，BALASINGAM P，PARK J et al. Natural rock joint roughness quantification through fractal techniques[J]. Geotechnical and Geological Engineering，2006，24(5)：1 181–1 202.
[13] KULATILAKE P H S W，PARK J，BALASINGAM P，et al. Quantification of aperture and relations between aperture，normal stress and fluid flow for natural single rock fractures[J]. Geotechnical and Geological Engineering，2008，26(3)：269–281.
[14] 孙辅庭，佘成学，蒋庆仁. 一种新的岩石节理面三维粗糙度分形描述方法[J]. 岩土力学，2013，34(8)：2 238–2 242.(SUN Futing，SHE Chengxue，JIANG Qingren. A new fractal description method for three-dimensional roughness surface of rock joint[J]. Rock and Soil Mechanics，2013，34(8)：2 238–2 242.(in Chinese))
[15] GRASSELLI G，EGGER P. Constitutive law for the shear strength of rock joints based on three-dimensional surface parameters[J]. International Journal of Rock Mechanics and Mining Sciences，2003，40(1)：25–40.
[16] 周宏伟，谢和平，KWASNIEWSKI M A，等. 岩体节理表面形貌的各向异性研究[J]. 地质力学学报，2001，7(2)：123–128.(ZHOU Hongwei，XIE Heping，KWASNIEWSKI M A，et al. On anisotropy of surface topography of rock joint[J]. Journal of Geomechanics，2001，7(2)：123–128.(in Chinese))
[17] 李久林，唐辉明. 结构面粗糙度和抗剪强度的各向异性效应[J]. 工程勘察，1994，(5)：12–16.(LI Jiulin，TANG Huiming. ON anisotropy of textural surfaces roughness and peak shear strength[J]. Geotechnical Investigation and Surveying，1994，(5)：12–16.(in Chinese))
[18] 杜时贵，唐辉明. 岩体断裂粗糙度系数的各向异性研究[J]. 工程地质学报，1993，1(2)：32–41.(DU Shigui，TANG Huiming. A study on the anisotropy of joint roughness coefficient in rock mass[J]. Journal of Engineering Geology，1993，1(2)：32–41.(in Chinese))
[19] BELEM T，HOMAND-ETIENNE F，SOULEY M. Quantitative parameter for rock joint surface roughness[J]. Rock Mechanics and Rock Engineering，2000，33(4)：217–242.
[20] 张 鹏，李 宁，陈新民. 一种新的裂隙三维表面粗糙度表征方法[J]. 岩石力学与工程学报，2009，28(增2)：3 477–3 482.(ZHANG Peng，LI Ning，CHEN Xinmin. A new representation method for three- dimensional surface roughness of rock fracture[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(Supp.2)：3 477–3 482.(in Chinese))
[21] 葛云峰，唐辉明，黄 磊，等. 岩体结构面三维粗糙度系数表征新方法[J]. 岩石力学与工程学报，2012，31(12)：2 508–2 515.(GE Yunfeng，TANG Huiming，HUANG Lei，et al. A new representation method for three-dimensional joint roughness coefficient of rock mass discontinuities[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(12)：2 508–2 515.(in Chinese))
[22] 王思敬. 论岩石的地质本质性及其岩石力学演绎[J]. 岩石力学与工程学报，2009，28(3)：433–450.(WANG Sijing. Geological nature of rock and its deduction for rock mechanics[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(3)：433–450.(in Chinese))
[23] 张 征，刘淑春，鞠硕华. 岩土参数空间变异性分析原理与最优估计模型[J]. 岩土工程学报，1996，18(4)：40–47.(ZHANG Zheng，LIU Shuchun，JU Shuohua. The optimum estimation model and theprinciple of spatial variability analysis of rock and soil parameters[J]. Chinese Journal of Geotechnical Engineering，1996，18(4)：40–47.(in Chinese))
[24] 仇圣华，杨林德，陈 岗. 地质统计学理论在岩体参数求解中的应用[J]. 岩石力学与工程学报，2005，24(9)：1 545–1 548.(QIU Shenghua，YANG Linde，CHEN Gang. Application of geostatistics in determining rock mass parameters[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(9)：1 545–1 548.(in Chinese))
[25] 孙洪泉. 地质统计学及其应用[M]. 徐州：中国矿业大学出版社，1990：31–95.(SUN Hongquan. Geostatistics and its application[M]. Xuzhou：China University of Mining and Technology Press，1990：31–95.(in Chinese))
[26] 王仁铎，胡光道. 线性地质统计学[M]. 北京：地质出版社，1988：71–75.(WANG Renduo，HU Guangdao. Linear geostatistics[M]. Beijing：Geological Publishing House，1988：71–75.(in Chinese))
[27] 陈仲堂，赵德平，李彦平，等. 应用数理统计[M]. 北京：国防工业出版社，2011：110–112.(CHEN Zhongtang，ZHAO Deping，LI Yanping，et al. Applied mathematical statistics[M]. Beijing：Defense Industry Publishing House，2011：110–112.(in Chinese))
[28] TATONE B S A，GRASSELLI G. A new 2D discontinuity roughness parameter and its correlation with JRC[J]. International Journal of Rock Mechanics and Mining Sciences，2010，47(8)：1 391–1 400. |
|
|
|
2015, Vol. 34 
