Rock and Soil Mechanics ›› 2020, Vol. 41 ›› Issue (11): 3553-3562.doi: 10.16285/j.rsm.2020.0174

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental study on seepage diffusion movement in fractal rock fractures

CUI Wei1, 2, 3, ZOU Xu3, LI Zheng3, JIANG Zhi-an4, XIE Wu4   

  1. 1. State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300350, China; 2. Key Laboratory of Earthquake Engineering Simulation and Seismic Resilience of China Earthquake Administration, Tianjin University, Tianjin 300350, China; 3. School of Civil Engineering, Tianjin University, Tianjin 300350, China; 4. Sinohydro Foundation Engineering Co., Ltd., Tianjin 301700, China
  • Received:2020-01-09 Revised:2020-04-13 Online:2020-11-11 Published:2020-12-24
  • Supported by:
    This work was supported by the Joint Fund of the National Natural Science Foundation of China and Yalong River (U1765106).

PDF (Chinese)

406

Abstract: The fluid movement in rock mass is extremely complicated due to the existence of a large number of rough and irregular fractures. To address the difficulties such as concealment and non-repeatability of physical model in natural rough rock fissure seepage tests, a fissure channel with rough joint surface was constructed based on a three-dimensional Weierstrass-Mandelbrot fractal function. Using 3D printing technique, a transparent and refined fracture channel model was obtained, and the fracture seepage diffusion movements under different conditions were studied by using microfluidic control instruments. The relationships between the discharge of fracture channel and the pressure head, the fracture width and the fractal dimension were analyzed. The results show that in fractal fractures, the discharge of fracture channel is linear with the pressure head; the single-wide discharge is approximately cubic with the width of the fracture channel, which is similar to the parallel plate cubic law. Considering the influence of fractal dimension, the discharge through the fracture channel increases with the increase of fractal dimension. The cubic law of seepage in rough fractures can be modified by the power exponent function related to the fractal dimension.

Key words: rock fissure, seepage, fractal dimension, roughness, laboratory test, 3D printing, cubic law

CLC Number: 

  • TU 451
[1] LEI Hua-yang, XU Ying-gang, MIAO Jiang-yan, LIU Xu. Experimental investigation on dynamic properties of soft clay under coupled cyclic-seepage loads [J]. Rock and Soil Mechanics, 2021, 42(3): 601-610.
[2] CHEN Xi, ZENG Ya-wu, . A new three-dimensional roughness metric based on Grasselli’s model [J]. Rock and Soil Mechanics, 2021, 42(3): 700-712.
[3] WANG Ben-xin, JIN Ai-bing, SUN Hao, WANG Shu-liang, . Study on fracture mechanism of specimens with 3D printed rough cross joints at different angles based on DIC [J]. Rock and Soil Mechanics, 2021, 42(2): 439-450.
[4] ZHANG Yu-fei, LI Jian-chun, YAN Ya-tao, LI Hai-bo, . Experimental study on dynamic damage characteristics of roughness joint surface based on SHPB [J]. Rock and Soil Mechanics, 2021, 42(2): 491-500.
[5] WANG Ben-xin, JIN Ai-bing, WANG Shu-liang, SUN Hao, . Mechanical characteristics and fracture mechanism of 3D printed rock samples with cross joints [J]. Rock and Soil Mechanics, 2021, 42(1): 39-49.
[6] WANG Ke, SHENG Jin-chang, GAO Hui-cai, TIAN Xiao-dan, ZHAN Mei-li, LUO Yu-long, . Study on seepage characteristics of rough crack under coupling of stress-seepage erosion [J]. Rock and Soil Mechanics, 2020, 41(S1): 30-40.
[7] ZOU Xian-jian, WANG Yi-teng , WANG Chuan-ying, . Three-dimensional morphological feature of rock structural surfaces and dominant anti-slip direction using the borehole images [J]. Rock and Soil Mechanics, 2020, 41(S1): 290-298.
[8] MENG Min-qiang, WANG Lei, JIANG Xiang, WANG Cheng-gui, LIU Han-long, XIAO Yang, . Single-particle crushing test and numerical simulation of coarse grained soil based on size effect [J]. Rock and Soil Mechanics, 2020, 41(9): 2953-2962.
[9] LIN Man-qing, ZHANG Lan, LIU Xi-qi, XIA Yuan-you, ZHANG Dian-ji, PENG Ya-li, . Microscopic analysis of rockburst failure on specimens under gradient stress [J]. Rock and Soil Mechanics, 2020, 41(9): 2984-2992.
[10] WANG Ming-nian, JIANG Yong-tao, YU Li, DONG Yu-cang, DUAN Ru-yu, . Analytical solution of startup critical hydraulic gradient of fine particles migration in sandy soil [J]. Rock and Soil Mechanics, 2020, 41(8): 2515-2524.
[11] FANG Ying-guang, CHEN Jian, GU Ren-guo, BA Ling-zhen, SHU Hao-kai, . Applicability of clay permeability based on modified Kozeny-Carman equation by effective specific surface area [J]. Rock and Soil Mechanics, 2020, 41(8): 2547-2554.
[12] ZHANG Ke, QI Fei-fei, CHEN Yu-long, . Deformation and fracturing characteristics of fracture network model and influence of filling based on 3D printing and DIC technologies [J]. Rock and Soil Mechanics, 2020, 41(8): 2555-2563.
[13] ZHANG Jin-xun, QI Yi, YANG Hao, SONG Yong-wei. Temperature field expansion of basin-shaped freezing technology in sandy pebble stratum of Beijing [J]. Rock and Soil Mechanics, 2020, 41(8): 2796-2804.
[14] LIU Zheng-hong, ZHANG Long, ZHENG Jian-guo, ZHANG Wei, YU Yong-tang, . Testing device and experimental study on anti-seepage ability of sliding micrometer tube [J]. Rock and Soil Mechanics, 2020, 41(7): 2504-2515.
[15] ZHANG Qing-yan, CHEN Wei-zhong, YUAN Jing-qiang, LIU-Qi, RONG Chi, . Experimental study on evolution characteristics of water and mud inrush in fault fractured zone [J]. Rock and Soil Mechanics, 2020, 41(6): 1911-1922.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] ZHAO Ming-hua, LIU Xiao-ping, HUANG Li-kui. Study of characteristics of seepage of roadbed’s fissures[J]. , 2009, 30(10): 3122 -3126 .
[2] YIN Jie，GAO Yu-feng，HONG Zhen-shun. Research on undrained shear strength tests of soft Lianyungang clay[J]. , 2009, 30(11): 3297 -3301 .
[3] ZHU Xun-guo，YANG Qing.. Analyzing and studying factors for determining neutral point position of fully grouted rock bolt[J]. , 2009, 30(11): 3386 -3392 .
[4] YU Li-yuan，LI Shu-cai，XU Bang-shu. Stability analysis of Zhoushan subsea tunnel with drill-and-blast construction method[J]. , 2009, 30(11): 3453 -3459 .
[5] LAN Hai-tao，LI Qian，HAN Chun-yu. Slope stability evaluation based on generalized regression neural network[J]. , 2009, 30(11): 3460 -3463 .
[6] WANG Li，ZHENG Gang. Research on vertical bearing capacity of partially inclined pile with finite element method[J]. , 2009, 30(11): 3533 -3538 .
[7] YANG Jian-ping, CHEN Wei-zhong, TIAN Hong-ming, Yü Hong-dan. Study of permeability evolutions in low permeability media under different stresses and temperatures[J]. , 2009, 30(12): 3587 -3594 .
[8] MAO Chang-xi, DUAN Xiang-bao, WU Liang-ji. Study of critical gradient of piping for various grain sizes in sandy gravels[J]. , 2009, 30(12): 3705 -3709 .
[9] LU Zu-de, CHEN Cong-xin, CHEN Jian-sheng, TONG Zhi-yi, ZUO Bao-cheng. Field shearing test for heavily weathered hornstone of Three Phase Project of Ling'ao Nuclear Power Station[J]. , 2009, 30(12): 3783 -3787 .
[10] MA Wen-tao, KONG Liang. Genetic-least square support vector machine estimation of slope stability[J]. , 2009, 30(12): 3876 -3880 .
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