›› 2017, Vol. 38 ›› Issue (2): 525-533.doi: 10.16285/j.rsm.2017.02.028

• Geotechnical Engineering • Previous Articles     Next Articles

Description of discontinuities morphology based on shear behavior

SONG Lei-bo1, JIANG Quan2, LI Yuan-hui1, YANG Cheng-xiang1, RAN Shu-guang2, WANG Bai-lin3, LIU Ting3   

  1. 1. Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines, Northeastern University, Shenyang, Liaoning 110819, China; 2. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, China; 3. Headquarters of Expressway Construction in Ningbo, Ningbo, Zhejiang 315000, China
  • Received:2015-09-01 Online:2017-02-11 Published:2018-06-05
  • Supported by:

    This work was supported by the Key Research Development Program of China (2016YFC0600707), the National Natural Science Foundation of China (51579043) and the Fundamental Research Funds for the Central Universities (120701001).

PDF (Chinese)

881

Abstract: Description of rock morphology is of great significance to better understand the shear behavior of the discontinuities. Firstly, from the shear directional characteristics of the discontinuities, a new index SC (shear coefficient) describing discontinuities morphology is proposed based on some pivotal role on shear behavior of its morphology in the shear direction. The index describes undulation characteristics, statistical distribution of undulation and height characteristics of two-dimensional discontinuities morphology in the shear direction, and can also characterize directionality of the morphology. Moreover, the relationship between SC and JRC (joint roughness coefficient) is established based on 10 digitized JRC standard curves. Then, with the help of point cloud data of rock discontinuities obtained by three-dimensional (3D) white scanner, the shear coefficient SC is extended to 3D to better characterize 3D morphology characteristics of discontinuities. Finally, the three-dimensional shear coefficient (SC3D) is used to quantify morphology of natural rock discontinuities in different directions. It is shown that SC can well represent anisotropic morphology characteristics of discontinuities.

Key words: rock discontinuities, shear behavior, characteristics of discontinuities morphology, joint roughness coefficient, three-dimensional scanning, anisotropy

CLC Number: 

  • TU 45

[1] HONG Chen-jie, HUANG Man, XIA Cai-chu, LUO Zhan-you, DU Shi-gui, . Study of size effect on the anisotropic variation coefficient of rock joints [J]. Rock and Soil Mechanics, 2020, 41(6): 2098-2109.
[2] HOU Qin-kuan, YONG Rui, DU Shi-gui, XU Min-na, CAO Ze-min. Methods of determining the minimum number of samples for statistical measurement of rock joint roughness [J]. Rock and Soil Mechanics, 2020, 41(4): 1259-1269.
[3] XU Jie, ZHOU Jian, LUO Ling-hui, YU Liang-gui, . Study on anisotropic permeability model for mixed kaolin-montmorillonite clays [J]. Rock and Soil Mechanics, 2020, 41(2): 469-476.
[4] PENG Shou-jian, YUE Yu-qing, LIU Yi-xin, XU Jiang, . Anisotropic characteristics and shear mechanical properties of different genetic structural planes [J]. Rock and Soil Mechanics, 2019, 40(9): 3291-3299.
[5] WANG Peng-fei, TAN Wen-hui, MA Xue-wen, LI Zi-jian, LIU Jing-jun, WU Yang-fan. Experimental study of seepage characteristics of consecutive and filling fracture with different roughness levels and gap-widths [J]. Rock and Soil Mechanics, 2019, 40(8): 3062-3070.
[6] YIN Xiao-meng, YAN E-chuan, WANG Lu-nan, CHEN Li, . Quantitative microstructure information extraction and microscopic morphology analysis of anisotropic schist [J]. Rock and Soil Mechanics, 2019, 40(7): 2617-2627.
[7] YIN Xiao-meng, YAN E-chuan, WANG Lu-nan, WANG Yan-chao, . Effect of water and microstructure on wave velocity anisotropy of schist and its mechanism [J]. Rock and Soil Mechanics, 2019, 40(6): 2221-2230.
[8] JIA Rui, LEI Hua-yang, . Experimental study of anisotropic consolidation behavior of Ariake clay [J]. Rock and Soil Mechanics, 2019, 40(6): 2231-2238.
[9] XU Jiang, QU Jia-mei, LIU Yi-xin, PENG Shou-jian, WANG Wei, WU Shan-kang, . Influence of filling material on the behavior of joints under cyclic shear loading [J]. Rock and Soil Mechanics, 2019, 40(5): 1627-1637.
[10] ZHANG Kun-yong, ZANG Zhen-jun, LI Wei, WEN De-bao, CHARKLEY Frederick Nai, . Three-dimensional elastoplastic model of soil with consideration of unloading stress path and its experimental verification [J]. Rock and Soil Mechanics, 2019, 40(4): 1313-1323.
[11] KE Zhi-qiang, WANG Huan-ling, XU Wei-ya, LIN Zhi-nan, JI Hua, . Experimental study of mechanical behaviour of artificial columnar jointed rock mass containing transverse joints [J]. Rock and Soil Mechanics, 2019, 40(2): 660-667.
[12] ZHOU Jian, CAI Lu, LUO Ling-hui, YING Hong-wei, . Limit equilibrium analysis of anisotropic soft clay stability against excavation basal heave [J]. Rock and Soil Mechanics, 2019, 40(12): 4848-4856.
[13] GE Yun-feng, ZHONG Peng, TANG Hui-ming, ZHAO Bin-bin, WANG Liang-qing, XIA Ding, QIU Ya-shi, LI Peng-fei, ZHANG Li, WEN Lian, CAO Tian-ci, . Intelligent measurement on geometric information of rock discontinuities based on borehole image [J]. Rock and Soil Mechanics, 2019, 40(11): 4467-4476.
[14] TIAN Yu, YAO Yang-ping, LU De-chun, DU Xiu-li, . Cross-anisotropic Mohr-Coulomb criterion and formula of passive earth pressure based on modified stress method [J]. Rock and Soil Mechanics, 2019, 40(10): 3945-3950.
[15] TANG Hong-xiang, WEI Wen-cheng. Finite element analysis of slope stability by coupling of strength anisotropy and strain softening of soil [J]. Rock and Soil Mechanics, 2019, 40(10): 4092-4100.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
Copyright © Rock and Soil Mechanics, All Rights Reserved.
Tel: 027-87198484, 87199252, 87199253, 87198752　E-mail: ytlx@whrsm.ac.cn
Powered by Beijing Magtech Co. Ltd