(1. College of Harbour，Coastal and Offshore Engineering，Hohai University，Nanjing，Jiangsu 210098，China；
2. Geotechnical Research Institute，Hohai University，Nanjing，Jiangsu 210098，China)
Abstract：The variations of the permeability and porosity of columnar jointed artificial rock under cyclic loading and unloading of the confining pressure were measured by using the inert gas permeability test device. In the first stage of confining pressure loading，the confining pressure has a great effect on the permeability and porosity，and the changes of the permeability and porosity are irreversible. In the subsequent stages of cyclic loading and unloading，the change of the confining pressure has a less effect on the permeability and porosity. The relationships between the permeability or porosity of columnar jointed artificial material and the confining pressure were fitted with the power functions during the confining pressure-loading stage. In the unloading stage of confining pressure，the relationship of the permeability and confining pressure can described as a power function，and the one of the porosity and confining pressure can described as an exponential function. The sensitivities of the permeability and porosity to confining pressure decreases with the confining pressure increasing，while the sensitivities of the permeability and porosity to confining pressure can be restored fully after confining pressure unloading. In the each stage of confining pressure loading and unloading，the relationship curves between the sensitivity of permeability to the change of confining pressure and column inclination exhibit a double peak pattern. The value of first peak is greater than the second one. The relationship between the porosity and permeability shows a power function in the loading stage of confining pressure，and a power-exponent function in the confining pressure unloading stage. The sensitivity of the permeability to the change of porosity increases with the porosity increasing. The relationship curves between the sensitivity of the permeability to the change of porosity and column angle exhibit a double peak pattern，and the first peak value is greater than the second one.
引用本文:
巢志明1，王环玲1，徐卫亚2，吉 华2，赵 恺1. 循环加卸载下柱状节理材料渗透率和孔隙度演化规律研究[J]. 岩石力学与工程学报, 2017, 36(1): 124-141.
CHAO Zhiming1，WANG Huanling1，XU Weiya2，JI Hua2，ZHAO Kai1. Permeability and porosity of columnar jointed rock under cyclic loading and unloading. , 2017, 36(1): 124-141.
[1] 孟国涛. 柱状节理岩体各向异性力学分析及其工程应用[博士学位论文][D]. 南京：河海大学，2007.(MENG Guotao. Geomechanical analysis of anisotropic columnar jointed rock mass and its application in hydropower engineering[Ph. D. Thesis][D]. Nanjing：Hohai University，2007.(in Chinese))
[2] 刘海宁，王俊梅，王思敬. 白鹤滩柱状节理岩体真三轴模型试验研究[J]. 岩土力学，2010，33(1)：163–171.(LIU Haining，WANG Junmei，WANG Sijing. Experimental research of columnar jointed basalt with true triaxialapparatus at Baihetan Hydropower Station[J]. Rock and Soil Mechanics，2010，33(1)：163–171.(in Chinese))
[3] 郑文棠，徐卫亚，邬爱清，等. 柱状节理开挖模拟洞数值原位试验[J]. 岩土力学，2008，29(增1)：253–257.(ZHENG Wentang，XU Weiya，WU Aiqing，et al. Numerical in situ testing of excavation experimental cavity on columnal joints[J]. Rock and Soil Mechanics，2008，29(Supp.1)：253–257.(in Chinese))
[4] 肖维民，邓荣贵，付小敏，等. 单轴压缩条件下柱状节理岩体变形和强度各向异性模型试验研究[J]. 岩石力学与工程学报，2015，34(5)：957–963.(XIAO Weimin，DENG Ronggui，FU Xiaomin，et al. Model experiments on deformation and strength anisotropy of columnar jointed rock masses under uniaxial compression[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(5)：957–963.(in Chinese))
[5] 徐卫亚，郑文棠，宁 宇，等. 柱状节理坝基岩体三维各向异性数值分析[J]. 岩土力学，2010，31(3)：949–955.(XU Weiya，ZHENG Wentang，NING Yu，et al. 3D anisotropic numerical analysis of rock mass with columnarjoints for dam foundation[J]. Rock and Soil Mechanics，2010，31(3)：949–955.(in Chinese))
[6] 朱道建，杨林德，蔡永昌. 柱状节理岩体各向异性特性及尺寸效应研究[J]. 岩石力学与工程学报，2009，28(7)：1 405–1 414.(ZHU Daojian，YANG Linde，CAI Yongchang. Research on anisotropic characteristics and size effectof columnar jointed rock mass[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(7)： 1 405–1 414.(in Chinese))
[7] 王文学，隋旺华，董青红. 应力恢复对采动裂隙岩体渗透性演化的影响[J]. 煤炭学报，2014，39(6)：1 031–1 038.(WANG Wenxue，SUI Wanghua，DONG Qinghong. Influence of cover stress re- establishment on the permeability evolution of the mining-induced fractures[J]. Journal of China Coal Society，2014，39(6)：1 031– 1 038.(in Chinese))
[8] LOUIS C，MAIN Y. Determination of in-situ hydraulic parameters in jointed rock[J]. International Society of Rock Mechanics，Proceedings，1970，1：1–19.
[9] OLSSON R，BARTON N. An improved model for hydromechanical coupling during shearing of rock joints[J]. International Journal of Rock Mechanics and Mining Sciences，2001，38(3)：317–329.
[10] 许光祥，张永兴，哈秋舲. 粗糙裂隙渗流的超立方和次立方定律及其试验研究[J]. 水利学报，2003，(3)：74–79.(XU Guangxiang，ZHANG Yongxing，HA Qiuling. Super-cubic and sub-cubic law of rough fracture seepage and its experiments study[J]. Journal of Hydraulic Engineering，2003，(3)：74–79.(in Chinese))
[11] 速宝玉，詹美礼. 仿天然岩体裂隙渗流的实验研究[J]. 岩土工程学报，1995，17(5)：19–24.(SU Baoyu，ZHAO Meili. Study on fracture seepge in the lmit ative nature roke[J]. Chinese Journal of Geotechnical Engineering，1995，17(5)：19–24.(in Chinese))
[12] 吴 凡，孙黎娟，何 江. 孔隙度，渗透率与净覆压的规律研究和应用[J]. 西南石油学院学报，1999，21(4)：23–26.(WU Fan，SUN Linjuan，HE Jiang. The research and application of permeability，porosity and net overburden pressure laws[J]. Journal of Southwest Petroleum Institute，1999，21(4)：23–26.(in Chinese))
[13] 刘建军，刘先贵. 有效压力对低渗透多孔介质孔隙度，渗透率的影响[J]. 地质力学学报，2001，7(1)：41–44.(LIU Jianjun，LIU Xiangui. The effect of effective pressure on porosity and permeability of low permeability porous media[J]. Journal of Geomechanics，2001，7(1)：41–44.(in Chinese))
[14] JIANG T，SHAO J，XU W，et al. Experimental investigation and micromechanical analysis of damage and permeability variation in brittle rocks[J]. International Journal of Rock Mechanics and Mining Sciences，2010，47(5)：703–713.
[15] WANG H L，XU W Y，HE M. Anisotropic permeability evolution model of rock in the process of deformation and failure[J]. Journal of Hydrodynamics：Ser. B，2012，24(1)：25–31.
[16] 贺玉龙，杨立中. 围压升降过程中岩体渗透率变化特性的试验研究[J]. 岩石力学与工程学报，2004，23(3)：415–419.(HE Yulong，YANG Lizhong. Testing study on variational characteristics ofrockmass permeability under loading-unloading of confining pressure[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(3)：415–419.(in Chinese))
[17] JONES JR F O. A laboratory study of the effects of confining pressure on fracture flow and storage capacity in carbonate rocks[J]. Journal of Petroleum Technology，1975，27(1)：21–27.
[18] MCKEE C，BUMB A，KOENIG R. Stress-dependent permeability and porosity of coal and other geologic formations[J]. SPE Formation Evaluation，1988，3(1)：81–91.
[19] 王 伟，徐卫亚，王如宾，等. 低渗透岩石三轴压缩过程中的渗透性研究[J]. 岩石力学与工程学报，2015，34(1)：40–47.(WANG Wei，XU Weiya，WANG Rubin，et al. Permeability of de nse rock under triaxial compression[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(1)：40–47.(in Chinese))
[20] 宁 宇. 柱状节理岩体各向异性等效强度与屈服准则研究[博士学位论文][D]. 南京：河海大学，2008.(NING Yu. Study on anisotropic equivalent strength and yield criterion of the columnar jointed rock mass[Ph. D. Thesis][D]. Nanjing：Hohai University，2008.(in Chinese))
[21] 付志亮，牛学良，王素华，等. 相似材料模拟试验定量化研究[J]. 固体力学学报，2008，27(增1)：169–173.(FU Zhiliang，NIU Xueliang，WANG Suhua，at al. Similar material simulation test quantitative study[J]. Journal of solid mechanics，2008，27(Supp.1)：169–173.(in Chinese))
[22] 张强勇，李术才，焦玉勇. 岩体数值分析方法与地质力学模型试验原理及工程应用[M]. 北京：中国水利水电出版社，2005：61–63.(ZHANG Qiangyong，LI Shucai，JIAOYuyong. Numerical analysis method of rock mass and the principle and application of geo mechanical model test[M]. Beijing：China Water Conservancy and Hydropower Press，2005：61–63.(in Chinese))
[23] 郑文棠. 不规则柱状节理岩石力学及在高边坡坝基岩石工程中的应用[博士学位论文][D]. 南京：河海大学，2008.(ZHENG Wentang. Rock mechanics of irregular columnar jointed basaltic mass and its application in high slope and dam foundation[Ph. D. Thesis][D]. Nanjing：Hohai University，2008.(in Chinese))
[24] 贾朝军，王环玲，徐卫亚，等. 地下水封洞库围岩气体渗透特性及滑脱效应研究[J]. 工程力学，2015，32(8)：50–57.(JIA Chaojun，WANG Haunling，XU Weiya，et al. Study on gas permeation and slippage effects in rockmass of underground water-sealed cave[J]. Engineering Mechanics，2015，32(8)：50–57.(in Chinese))
[25] WANG H L，XU W Y，ZHU F. The mechanical response of piles with consideration of pile-soil interactions under a periodic wave pressure[J]. Journal of Hydrodynamics，2014，(6)：921–929.
[26] WANG H L，XU W Y. Permeability evolution laws and equations during the course of deformation and failure of brittle rock[J]. Journal of Engineering Mechanics，2013，139(11)：1 621–1 626.
[27] 王环玲，徐卫亚. 致密岩石渗透测试与渗流力学特性[M]. 北京：科学出版社，2015：51–56.(WANG Huanling，XU Weiya. Permeability test of tight rock and the mechanical properties of porous flow[M]. Beijing：Science Publishing Company，2015：51–56.(in Chinese))
[28] 王环玲，徐卫亚，左 婧，等. 低渗透岩石渗透率与孔隙率演化规律的气渗试验研究[J]. 水利学报，2015，46(2)：1–10.(WANG Huanling，XU Weiya，ZUO Jing，et al. Evolution law of the permeability and porosity for low-permeability rock based on gas permeability test[J]. Journal of Hydraulic Engineering，2015，46(2)：1–10.(in Chinese))
[29] 孔详言. 高等渗流力学[M]. 合肥：中国科学技术大学出版社，1999：101–106.(KONG Xingyan. Advanced seepage mechanics[M]. Hefei：University of Science and Technology China Press，1999：101–106.(in Chinese))
[30] 孔 茜，王环玲，徐卫亚. 循环加卸载作用下砂岩孔隙度与渗透率演化规律试验研究[J]. 岩土工程学报，2015，37(10)：1 893–1 900. (KONG Qian，WANG Huanling，XU Weiya. Experimental study on permeability and porosity evolution of sandstone undercyclic loading and unloading[J]. Chinese Journal of Geotechnical Engineering，2015，37(10)：1 893–1 900.(in Chinese))
[31] 熊 伟. 流固耦合渗流规律研究[硕士学位论文][D]. 北京：中国科学院渗流力学研究所，2002.(XIONG Wei. Study on fluid-solid coupling seepage phenomenon[M. S. Thesis][D]. Beijing：Institute of Porous Flow and Fluid Mechanics，Chinese Academy of Sciences，2002.(in Chinese))
[32] ROGERS J J，HEAD W B. Relationships between porosity，median size，and sorting coefficients of synthetic sands[J]. Journal of Sedimentary Research，1961，31(3)：72–79.
2017, Vol. 36 
