›› 2006, Vol. 27 ›› Issue (8): 1253-1257.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Research on capillary pressure-saturation curve for a single fracture in an unsaturated fractured mass

LI Kang-hong1, CHAI Jun-rui1, 2   

  1. 1. College of Hydroelectric Engineering, Xi’an University of Technology, Xi’an 710048, China; 2. College of Civil and Hydropower Engineering, China Three Gorges University, Yichang 443002, China
  • Received:2004-11-15 Online:2006-08-10 Published:2013-11-26

PDF (PC)

1352

Abstract: It is an issue to choose an appropriate capillary pressure-saturation curve in the research of unsaturated fractured mass. Based on the characteristic of the unsaturated fractured mass, the research on the capillary pressure-saturation curve in an unsaturated fractured mass is summarized. It can be seen that seepage in an unsaturated fractured mass has some special characteristics including capillary flow, film flow, preferential flow and facture-matrix interaction; three methods to establish the capillary pressure-saturation curve, including physical laboratory, numerical simulation and mathematical computation; and all the results of these methods are also summarized. Finally, according to the characteristics of the seepage in an unsaturated rock mass and all these result of the capillary pressure-saturation curve, the following results can be concluded: (1) there is no capillary pressure-saturation curve which can reflect the other characters of the seepage in unsaturated rock mass except the capillary flow; (2) it is a convenient method to build the capillary pressure-saturation curve by numerical simulation and mathematical computation; (3) the capillary pressure-saturation curve simulated by Brooks-Corey(BC) model is better than by van Genuchten(VG) at initial stage during drainage, but worse at the last stage.

Key words: unsaturated, seepage, capillary pressure, single fracture

CLC Number: 

  • P 641.135
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
    • [1] ZHOU Feng-xi, GAO Guo-yao, . Steady-state analysis of the heat-moisture-salt coupling for unsaturated soil [J]. Rock and Soil Mechanics, 2019, 40(6): 2050-2058.
    [2] WANG Jun-min, XIONG Yong-lin, YANG Qi-lai, SANG Qin-yang, HUANG Qiang. Study of the dynamic elastoplastic constitutive model for unsaturated soil [J]. Rock and Soil Mechanics, 2019, 40(6): 2323-2331.
    [3] TAO Gao-liang, WU Xiao-kang, GAN Shi-chao, XIAO Heng-lin, MA Qiang, LUO Chen-chen, . Experimental study and model prediction of permeability coefficient of unsaturated clay with different initial void ratios [J]. Rock and Soil Mechanics, 2019, 40(5): 1761-1770.
    [4] LIU Meng-shi, LUO Qiang, JIANG Liang-wei, LU Qing-yuan, LIANG Duo-wei, . Boundary pore characteristics and optimal treatment thickness in seepage test of coarse grained soil [J]. Rock and Soil Mechanics, 2019, 40(5): 1787-1796.
    [5] YANG Zong-ji, CAI Huan, LEI Xiao-qin, WANG Li-yong, DING Peng-peng, QIAO Jian-ping, . Experiment on hydro-mechanical behavior of unsaturated gravelly soil slope [J]. Rock and Soil Mechanics, 2019, 40(5): 1869-1880.
    [6] ZHENG Guo-feng, GUO Xiao-xia, SHAO Long-tan, . Experimental verification of an unsaturated shear strength criterion based on the state surface expression [J]. Rock and Soil Mechanics, 2019, 40(4): 1441-1448.
    [7] XU Qiang, XIAO Ming, CHEN Jun-tao, NI Shao-hu, . Solution to seepage monitoring data deficiency and judgement of seepage stability [J]. Rock and Soil Mechanics, 2019, 40(4): 1526-1534.
    [8] XIE Qiang, TIAN Da-lang, LIU Jin-hui, ZHANG Jian-hua, ZHANG Zhi-bin, . Simulation of seepage flow on soil slope and special stress-correction technique [J]. Rock and Soil Mechanics, 2019, 40(3): 879-892.
    [9] ZHENG Li-ming, ZHANG Yang-yang, LI Zi-feng, MA Ping-hua, YANG Xin-jun, . Analysis of seepage changes during poroelastic consolidation process with porosity and pressure variation under low-frequency vibration [J]. Rock and Soil Mechanics, 2019, 40(3): 1158-1168.
    [10] FANG Jin-jin, FENG Yi-xin, ZHAO Wei-long, WANG Li-ping, YU Yong-qiong, . Nonlinear constitutive model for intact loess in true tri-axial tests [J]. Rock and Soil Mechanics, 2019, 40(2): 517-528.
    [11] ZHANG Zhao, CHENG Jing-xuan, LIU Feng-yin, QI Ji-lin, CHAI Jun-rui, LI Hui-yong, . Physical approach to predict unsaturated permeability function based on soil particle size distribution [J]. Rock and Soil Mechanics, 2019, 40(2): 549-560.
    [12] WANG Qi-qian, ZHOU Hong-fu, FU Wen-xi, YE Fei, . Analysis for influence of water flow drag force on stability of slope shallow soil [J]. Rock and Soil Mechanics, 2019, 40(2): 759-766.
    [13] WANG Hua-bin, LI Jian-mei, JIN Yi-xuan, ZHOU Bo, ZHOU Yu, . The numerical methods for two key problems in rainfall-induced slope failure [J]. Rock and Soil Mechanics, 2019, 40(2): 777-784.
    [14] CHEN Zheng-han, GUO Nan, . New developments of mechanics and application for unsaturated soils and special soils [J]. Rock and Soil Mechanics, 2019, 40(1): 1-54.
    [15] YIN Xiao-meng, YAN E-chuan, LIU Xu-yao, LI Xing-ming, . Study on force of underground water in soil stability calculation [J]. Rock and Soil Mechanics, 2019, 40(1): 156-164.
    Viewed
    Full text


    Abstract

    Cited
      Shared   
      Discussed   
    [1] WEN Shi-qiang, CHEN Yu-min, DING Xuan-ming, ZUO Wei-long. Application of grouted gravel pile in soft subgrade improvement of expressway[J]. , 2010, 31(5): 1559 -1563 .
    [2] ZHANG Chang-guang，ZHANG Qing-he，ZHAO Jun-hai. Unified solutions of shear strength and earth pressure for unsaturated soils[J]. , 2010, 31(6): 1871 -1876 .
    [3] HAO Dong-xue, CHEN Rong, LUAN Mao-tian, WU Ke. Numerical analysis of SBPT for estimation of undrained shear strength[J]. , 2010, 31(7): 2324 -2328 .
    [4] SUN Tie-cheng, GAO Bo, WANG Zheng-zheng. Aseismic and seism-reducing modeling study for entrance of two-track tunnels[J]. , 2009, 30(7): 2021 -2026 .
    [5] LEI Hong-jun，LIU Zhong-ge，YU Yu-zhen，Lü He. Experimental study of seepage characteristics of clayey soil-structure interface under large shear deformation[J]. , 2011, 32(4): 1040 -1044 .
    [6] ZHANG Le-wen, QIU Dao-hong, LI Shu-cai, ZHANG De-yong. Study of tunnel surrounding rock classification based on rough set and ideal point method[J]. , 2011, 32(S1): 171 -175 .
    [7] BING Hui , HE Ping. Experimental study of water and salt redistributions of saline soil with different freezing modes[J]. , 2011, 32(8): 2307 -2312 .
    [8] LI Wei-chao, XIONG Ju-hua, YANG Min. Improved method for calculating anti-overturning safety factor of cement-soil retaining wall in layered soil[J]. , 2011, 32(8): 2435 -2440 .
    [9] WANG Wei LI Xiao-chun LI Qiang SHI Lu WANG Ying BAI Bing. Small size in-situ transient pulse permeability measurement system and its experimental research[J]. , 2011, 32(10): 3185 -3189 .
    [10] LI Shu-cai , ZHAO Yan , XU Bang-shu , LI Li-ping , LIU Qin , WANG Yu-kui . Study of determining permeability coefficient in water inrush numerical calculation of subsea tunnel[J]. , 2012, 33(5): 1497 -1504 .
    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