Anisotropic shear behavior of rock joint based on 3D printing technology

Authors

XU Xunhui, School of Highway, Chang’an University, Xi’an 710054, China
ZHANG Guobiao, Shaanxi Provincial Land Engineering Construction Group, Xi’an 710075, China
BAO Han, School of Highway, Chang’an University, Xi’an 710054, ChinaFollow
YAN Changgen, School of Highway, Chang’an University,Xi’an 710054, China

Abstract

Topography is an important factor affecting the shear behavior of joint. Furthermore, there are certain connections between the anisotropy of topography and the anisotropy of shear behavior. In this study, 3D laser scanning technology and 3D printing technology were used to make molds for simulating the topography of natural joint. Then, the cement mortar samples with dimension of 100 mm×100 mm×150 mm were cast, and shear tests with different shear directions under different normal stresses were conducted. The results indicate that obvious anisotropy has been shown in the joint shear behavior, which is reflected in the peak shear strength and the corresponding shear displacement and shear strength parameters, respectively. In addition, the anisotropy of the peak shear strength do not present simple monotone to the normal stress under low normal stress. The shear strength parameters c and ϕ with different directions both show significant anisotropy, and the values of them have similar variation tendency. What's more, the results also indicate that the shear direction has a stronger influence on the cohesion by analyzing the discrepancy of cohesion and internal friction angle compared to 0°.

Keywords

joint, 3D laser scanning, 3D printing, shear strength, shear strength parameter, anisotropy

DOI

10.3969/j.issn.10011986.2020.01.020

Recommended Citation

XU Xunhui, ZHANG Guobiao, BAO Han, et al. (2020) "Anisotropic shear behavior of rock joint based on 3D printing technology," Coal Geology & Exploration: Vol. 48: Iss. 1, Article 21.
DOI: 10.3969/j.issn.10011986.2020.01.020
Available at: https://cge.researchcommons.org/journal/vol48/iss1/21

Reference

[1] 王姣,李长冬,雍睿,等. 三峡库区侏罗系不同类型结构面抗剪强度对比[J]. 煤田地质与勘探,2014,42(5):61-66. WANG Jiao,LI Changdong,YONG Rui,et al. Comparison study on shear strength parameters of Jurassic different rock discontinuities in Three Gorges Reservoir region[J]. Coal Geology & Exploration,2014,42(5):61-66.

[2] 王昌硕,梁烨,王亮清,等. 基于三维结构面网络模拟的岩体变形模量确定方法[J]. 煤田地质与勘探,2016,44(3):97-102. WANG Changshuo,LIANG Ye,WANG Liangqing,et al. Method of determining deformation modulus of rock mass based on three-dimensional discontinuity network simulation[J]. Coal Geology & Exploration,2016,44(3):97-102.

[3] KUMAR R,VERMA A K. Anisotropic shear behavior of rock joint replicas[J]. International Journal of Rock Mechanics and Mining Sciences,2016,90:62-73.

[4] 包含,常金源,伍法权,等. 基于统计岩体力学的岩体强度特征分析[J]. 岩土力学,2015,36(8):2361-2369. BAO Han,CHANG Jinyuan,WU Faquan,et al. Analysis of strength characteristics of rock mass based on statistical mechanics of rock mass[J]. Rock and Soil Mechanics,2015,36(8):2361-2369.

[5] BAO Han,ZHAI Yong,LAN Hengxing,et al. Distribution characteristics and controlling factors of vertical joint spacing in sand-mud interbedded strata[J]. Journal of Structural Geology,2019,128:103886.

[6] PATTON F D. Multiple modes of shear failure in rock[C]//Proceeding of the 1st ISRM Congress. International Society for Rock Mechanics and Rock Engineering. Lisbon,Portugal,1966:509-513.

[7] LADANYI B,ARCHAMBAULT G. Simulation of shear behavior of a jointed rock mass[C]//Proceedings of the 11th US Symposium on Rock Mechanics(USRMS). Berkeley,1970:105-125.

[8] BARTON N. Review of a new shear-strength criterion for rock joints[J]. Engineering Geology,1973,7(4):287-332.

[9] AMADEI B,WIBOWO J,STURE S,et al. Applicability of existing models to predict the behavior of replicas of natural fractures of welded tuff under different boundary conditions[J]. Geotechnical and Geological Engineering,1998,16(2):79-128.

[10] YANG Zongye,TAGHICHIAN A,LI Wenchan. Effect of asperity order on the shear response of three-dimensional joints by focusing on damage area[J]. International Journal of Rock Mechanics and Mining Sciences,2010,47(6):1012-1026.

[11] HUANG T H,DOONG Y S,SHENG J. Measurement of rock joints roughness and its directional shear strength[C]//Proceedings of the International Conference on Mechanics of Jointed and Faulted Rock. Rotterdam:A. A. Balkema,1990:337-343.

[12] WANG J G,ICHIKAWA Y,LEUNG C F. A constitutive model for rock interfaces and joints[J]. International Journal of Rock Mechanics and Mining Sciences,2003,40(1):41-53.

[13] KULATILAKE P H S W,SHOU Guohua,HUANG Tsanhwei,et al. New peak shear strength criteria for anisotropic rock joints[J]. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts,1995,32(7):673-697.

[14] 陈世江,朱万成,王创业,等. 考虑各向异性特征的三维岩体结构面峰值剪切强度研究[J]. 岩石力学与工程学报,2016,35(10):2013-2021. CHEN Shijiang,ZHU Wancheng,WANG Chuangye,et al. Peak shear strength of 3D rock discontinuities based on anisotropic properties[J]. Chinese Journal of Rock Mechanics and Engineering,2016,35(10):2013-2021.

[15] 周辉,程广坦,朱勇,等. 基于3D雕刻技术的岩体结构面剪切各向异性研究[J]. 岩土力学,2019,40(1):118-126. ZHOU Hui,CHENG Guangtan,ZHU Yong,et al. Anisotropy of shear characteristics of rock joint based on 3D carving technique[J]. Rock and Soil Mechanics,2018,40(1):118-126.

[16] JING Lanru,NORDLUND E,STEPHANSSON O. An experimental study on the anisotropy and stress-dependency of the strength and deformability of rock joints[J]. International Journal of Rock Mechanics and Mining Science & Geomechanics Abstracts,1992,29(6):535-542.

[17] 杜时贵. 岩体节理面的力学效应研究[J]. 现代地质,1994,8(2):198-208. DU Shigui. Study on mechanical effects of rock mass joints[J]. Geoscience,1994,8(2):198-208.

[18] GENTIER S,RISS J,ARCHAMBAULT G,et al. Influence of fracture geometry on shear behavior[J]. International Journal of Rock Mechanics and Mining Sciences,2000,37(1/2):161-174.

[19] 游志诚,王亮清,杨艳霞,等. 基于三维激光扫描技术的结构面抗剪强度参数各向异性研究[J]. 岩石力学与工程学报,2014,33(增刊1):3003-3008. YOU Zhicheng,WANG Liangqing,YANG Yanxia,et al. Anisotropic research on shear strength parameters of discontinuity based on three-dimensional laser scanning technology[J]. Chinese Journal of Rock Mechanics and Engineering,2014,33(S1):3003-3008.

[20] 蔡毅. 岩体结构面粗糙度评价与峰值抗剪强度估算方法研究[D]. 武汉:中国地质大学(武汉),2018. CAI Yi. Methods for estimating the roughness and the peak shear strength of rock discontinuities[D]. Wuhan:China University of Geosciences(Wuhan),2018.

[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):2508- 2517. 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):2508-2517.

[22] 张国彪,包含,兰恒星,等. 结构面粗糙度系数与采样精度的关系研究[J]. 工程地质学报,2018,26(5):1336-1341. ZHANG Guobiao,BAO Han,LAN Hengxing,et al. Research on the relationship between joint roughness coefficient and sampling precision of structural plane[J]. Journal of Engineering Geology,2018,26(5):1336-1341.

[23] JU Yang,XIE Heping,ZHENG Zemin,et al. Visualization of the complex structure and stress field inside rock by means of 3D printing technology[J]. Chinese Science Bulletin,2014,59(36):5354-5365.

[24] ISHUTOV S,HASIUK F J,HARDING C,et al. 3D printing sandstone porosity models[J]. Interpretation,2015,3(3):49-61.

[25] JIANG Quan,FENG Xiating,SONG Lyubo,et al. Modeling rock specimens through 3D printing:Tentative experiments and prospects[J]. Acta Mechanica Sinica,2016,32(1):101-111.

[26] 王晓毅,王姣,张永权,等. 基于多功能起伏结构面制样模具的异性结构面剪切强度研究[J]. 煤田地质与勘探,2016,44(6):129-135. WANG Xiaoyi,WANG Jiao,ZHANG Yongquan,et al. Anisotropic rock joint shear strength study based on sample mould of multi-function undulation structure plane[J]. Coal Geology & Exploration,2016,44(6):129-135.