›› 2016, Vol. 37 ›› Issue (10): 2761-2768.doi: 10.16285/j.rsm.2016.10.004

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Permeability evolution of brittle rock in progressive failure process under triaxial compression

WANG Wei1, 2, LI Xue-hao1, 2, HU Da-wei3, CAO Ya-jun1, 2   

  1. 1. Geotechnical Research Institute, Hohai University, Nanjing, Jiangsu 210098, China; 2. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, Jiangsu 210098, China; 3.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, China
  • Received:2015-02-04 Online:2016-10-11 Published:2018-06-09
  • Supported by:

    This work was supported by the National Program on Key Basic Research Project of China (973 Program) (2011CB013504), the National Natural Science Foundation of China (11672343, 51479193) and the Fundamental Research Funds for the Central Universities (2016B20214, 2016B08014).

PDF (Chinese)

737

Abstract: Rock progressive failure is usually accompanied by development of cracks. The propagation behaviour of rock cracks is closely related to the evolution of rock permeability. In order to investigate the permeability properties of rock during progressive failure, a series of hydro-mechanical triaxial coupling tests is carried out on tuff specimens under different confining pressures and seepage pressures using triaxial servo-controlled seepage equipment. Based on the experimental results, the following conclusions are drawn. At the stable crack growth stage, the permeability keeps low and stable and the permeability corresponding to crack initiation strength can be used to determine the minimum value of permeability. At the crack unsteady growth stage, the permeability increases significantly and the increase of permeability can be divided into two stages, which can be reflected by crack circumferential strain. The inflection point of crack circumferential strain curve is used to identify the initial permeability. At the softening stage after failure, the permeability decreases and enters into a residual stable stage, which can be reflected by crack circumferential strain rate. The circumferential strain rate can be used to determine the position of the peak of permeability.

Key words: progressive failure of rocks, crack propagation, crack initiation strength, damage strength, permeability evolution

CLC Number: 

  • TU 458

[1] WANG Chuan, LENG Xian-lun, ZHANG Zhan-rong, YANG Chuang, CHEN Jian, . Numerical study on failure path of rock slope induced by multi-stage excavation unloading based on crack propagation [J]. Rock and Soil Mechanics, 2023, 44(4): 1190-1203.
[2] ZHANG Jun-zheng, TANG Chao-sheng, GONG Xue-peng, ZHOU Qi-you, CHENG Qing, LÜ Chao, SHI Bin. Refined monitoring of the dynamic process of soil desiccation cracking using ERT [J]. Rock and Soil Mechanics, 2023, 44(2): 392-402.
[3] XU Hao-chun, JIN Ai-bing, ZHAO Yi-qing, CHEN Zhe, . Numerical study on Brazilian splitting of heat-treated sandstone under different contact angles [J]. Rock and Soil Mechanics, 2022, 43(S2): 588-597.
[4] YANG Ke, ZHANG Zhai-nan, CHI Xiao-lou, LÜ Xin, WEI Zhen, LIU Wen-jie, . Experimental study on crack evolution and damage characteristics of water bearing sandstone under cyclic loading [J]. Rock and Soil Mechanics, 2022, 43(7): 1791-1802.
[5] YANG Hao, WEI Yu-feng, PEI Xiang-jun, ZHANG Yu-yang, . Centrifugal test study of fracture evolution characteristics of anti-dip rock slope with steep and gently dipping structural plane [J]. Rock and Soil Mechanics, 2022, 43(5): 1215-1225.
[6] TIAN Jia-li, WANG Hui-min, LIU Xing-xing, XIANG Lei, SHENG Jin-chang, LUO Yu-long, ZHAN Mei-li. Study on permeability characteristics of sandstone considering pore compression sensitivity at different scales [J]. Rock and Soil Mechanics, 2022, 43(2): 405-415.
[7] WU Dong-yang, YU Li-yuan, SU Hai-jian, WU Jiang-yu, LIU Ri-cheng, ZHOU Jian. Experimental study and PFC3D simulation on crack propagation of fractured rock-like specimens with bolts under uniaxial compression [J]. Rock and Soil Mechanics, 2021, 42(6): 1681-1692.
[8] YANG Liang, YANG Yong-tao, ZHENG Hong. The phase field numerical manifold method for crack propagation in rock [J]. Rock and Soil Mechanics, 2021, 42(12): 3419-3427.
[9] GONG Cong, ZHAO Kun, BAO Han, ZHAO Kui, ZENG Peng, WANG Wen-jie, . Acoustic emission source evolution and fractal features during creep failure of red sandstone [J]. Rock and Soil Mechanics, 2021, 42(10): 2683-2695.
[10] PAN Rui, CHENG Hua, WANG Lei, WANG Feng-yun, CAI Yi, CAO Guang-yong, ZHANG Peng, ZHANG Hao-jie, . Experimental study on bearing characteristics of bolt-grouting support in shallow fractured surrounding rock of roadway [J]. Rock and Soil Mechanics, 2020, 41(6): 1887-1898.
[11] AI Di-hao, LI Cheng-wu, ZHAO Yue-chao, LI Guang-yao, . Investigation on micro-seismic, electromagnetic radiation and crack propagation characteristics of coal under static loading [J]. Rock and Soil Mechanics, 2020, 41(6): 2043-2051.
[12] JIN Ai-bing, WANG Shu-liang, WANG Ben-xin, SUN Hao, CHEN Shuai-jun, ZHU Dong-feng, . Fracture mechanism of specimens with 3D printing cross joint based on DIC technology [J]. Rock and Soil Mechanics, 2020, 41(12): 3862-3872.
[13] LI Xiao-zhao, BAN Li-ren, QI Cheng-zhi, . Study on the mechanical model of macro-mecro creep under high seepage pressure in brittle rocks [J]. Rock and Soil Mechanics, 2020, 41(12): 3987-3995.
[14] JIN Ai-bing, WANG Shu-liang, WANG Ben-xin, SUN Hao, ZHAO Yi-qing, . Study on the fracture mechanism of 3D-printed-joint specimens based on DIC technology [J]. Rock and Soil Mechanics, 2020, 41(10): 3214-3224.
[15] ZHANG Guo-kai, LI Hai-bo, WANG Ming-yang, LI Xiao-feng, . Crack propagation characteristics in rocks containing single fissure based on acoustic testing and camera technique [J]. Rock and Soil Mechanics, 2019, 40(S1): 63-72.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] WEI Li，CHAI Shou-xi，CAI Hong-zhou，WANG Xiao-yan，LI Min3，SHI Qian. Research on tensility of wheat straw for reinforced material[J]. , 2010, 31(1): 128 -132 .
[2] HUANG Qing-xiang, ZHANG Pei, DONG Ai-ju. Mathematical model of “arch beam” of thick sandy soil layer movement in shallow seam[J]. , 2009, 30(9): 2722 -2726 .
[3] JING Zhi-dong, LIU Jun-xin. Experimental research on dynamic deformations of semi-rigid structures of subgrade bed-mudstone of red beds[J]. , 2010, 31(7): 2116 -2121 .
[4] LIU Zheng-hong，LIAO Yan-hong，ZHANG Yu-shou. Preliminary study of physico-mechanical properties of Luanda sand[J]. , 2010, 31(S1): 121 -126 .
[5] WANG Deng-ke，LIU Jian，YIN Guang-zhi，WEI Li-de. Research on influencing factors of permeability change for outburst-prone coal[J]. , 2010, 31(11): 3469 -3474 .
[6] FAN Heng-hui, GAO Jian-en, WU Pu-te, LUO Zong-ke. Physicochemical actions of stabilized soil with cement-based soil stabilizer[J]. , 2010, 31(12): 3741 -3745 .
[7] ZHANG Cheng-ping，ZHANG Ding-li，LUO Jian-jun，WANG Meng-shu，WU Jie-pu. Remote monitoring system applied to the construction of metro station undercrossing existing metro tunnel[J]. , 2009, 30(6): 1861 -1866 .
[8] WANG Jun, CAO Ping, LI Jiang-teng, LIU Ye-ke. Analysis of stability of tunnel-slope with rheological medium under rainfall infiltration[J]. , 2009, 30(7): 2158 -2162 .
[9] ZHANG Yuan, WAN Zhi-jun, KANG Jian-rong, ZHAO Yang-sheng. Analysis of stage characteristics of sandstone permeability under conditions of temperature and triaxial stress[J]. , 2011, 32(3): 677 -683 .
[10] ZHANG Xue-chan , GONG Xiao-nan , YIN Xu-yuan , ZHAO Yu-bo. Monitoring analysis of retaining structures for Jiangnan foundation pit of Qingchun road river-crossing tunnel in Hangzhou[J]. , 2011, 32(S1): 488 -0494 .
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