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QIAO Liping, PANG Lilei, WANG Zhechao, REN Mengzi. Influences of geometric characteristics of intersecting fractures in rock mass on solute transport[J]. Chinese Journal of Geotechnical Engineering, 2025, 47(6): 1162-1170. DOI: 10.11779/CJGE20240134
Citation: QIAO Liping, PANG Lilei, WANG Zhechao, REN Mengzi. Influences of geometric characteristics of intersecting fractures in rock mass on solute transport[J]. Chinese Journal of Geotechnical Engineering, 2025, 47(6): 1162-1170. DOI: 10.11779/CJGE20240134

Influences of geometric characteristics of intersecting fractures in rock mass on solute transport

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  • Received Date: February 18, 2024
  • Available Online: October 11, 2024
  • The solute transport characteristics of intersecting fracture are the basis of solute transport in fractured rock mass. The advection and hydrodynamic dispersion are the main controlling mechanisms of non-reactive solute transport, and the Péclet number is used to evaluate their proportions in the process of non-reactive solute transport. By changing the flow velocity of the injected fluid and the geometric characteristics of the intersecting fracture such as roughness, intersecting angle and aperture ratio, the influences of the Péclet number and geometric characteristics of intersecting fracture on solute transport characteristics are obtained through the finite element numerical analysis. The results show that with the increase of the fluid flow velocity, the solute transport changes from dispersion-dominated to advection-dominated. By comprehensively considering the dispersion effects in practical engineering, it is helpful to accurately evaluate the mixing degree of solute at the intersection. The roughness primarily affects the solute migration time towards outlets. The intersecting angle and aperture ratio significantly alter the mixing degree of solute at the intersections by affecting the probability of solute molecules diffusing to different outlet branches and the flow path of the dominant flow. Different flow ratios also affect the mixing of solutes at the intersection by influencing the positions of the dominant flow towards the outlet branches. The research conclusions can provide a theoretical basis for the prevention and control of groundwater pollutants in underground engineering such as oil and gas underground storage, landfill and nuclear waste disposal.
  • [1]
    周志芳, 王锦国. 裂隙介质水动力学[M]. 北京: 中国水利水电出版社, 2004.

    ZHOU Zhifang, WANG Jinguo. Dynamics of Fluids in Fractured Media[M]. Beijing: China Water & Power Press, 2004. (in Chinese)
    [2]
    周新, 盛建龙, 叶祖洋, 等. 岩体粗糙裂隙几何特征对其Forchheimer型渗流特性的影响[J]. 岩土工程学报, 2021, 43(11): 2075-2083.

    ZHOU Xin, SHENG Jianlong, YE Zuyang, et al. Effects of geometrical feature on Forchheimer- flow behavior through rough-walled rock fractures[J]. Chinese Journal of Geotechnical Engineering, 2021, 43(11): 2075-2083. (in Chinese)
    [3]
    李博, 黄嘉伦, 钟振, 等. 三维交叉裂隙渗流传质特性数值模拟[J]. 岩土力学, 2019, 40(9): 3670-3678.

    LI Bo, HUANG Jialun, ZHONG Zhen, et al. Numerical simulation on hydraulic and solute transport properties of 3D crossed fractures[J]. Rock and Soil Mechanics, 2019, 40(9): 3670-3678. (in Chinese)
    [4]
    LI B, MO Y Y, ZOU L C, et al. Influence of surface roughness on fluid flow and solute transport through 3D crossed rock fractures[J]. Journal of Hydrology, 2020, 582: 124284. doi: 10.1016/j.jhydrol.2019.124284
    [5]
    BODIN J, DELAY F, DE MARSILY G. Solute transport in a single fracture with negligible matrix permeability: 1. fundamental mechanisms[J]. Hydrogeology Journal, 2003, 11(4): 418-433. doi: 10.1007/s10040-003-0268-2
    [6]
    LI G M. Tracer mixing at fracture intersections[J]. Environmental Geology, 2002, 42(2): 137-144.
    [7]
    ZOU L C, JING L R, CVETKOVIC V. Modeling of flow and mixing in 3D rough-walled rock fracture intersections[J]. Advances in Water Resources, 2017, 107: 1-9. doi: 10.1016/j.advwatres.2017.06.003
    [8]
    WILSON C R, WITHERSPOON P A. Flow interference effects at fracture intersections[J]. Water Resources Research, 1976, 12(1): 102-104. doi: 10.1029/WR012i001p00102
    [9]
    HULL L C, KOSLOW K N. Streamline routing through fracture junctions[J]. Water Resources Research, 1986, 22(12): 1731-1734. doi: 10.1029/WR022i012p01731
    [10]
    HULL L C, MILLER J D, CLEMO T M. Laboratory and simulation studies of solute transport in fracture networks[J]. Water Resources Research, 1987, 23(8): 1505-1513. doi: 10.1029/WR023i008p01505
    [11]
    JOHNSON J, BROWN S. Experimental mixing variability in intersecting natural fractures[J]. Geophysical Research Letters, 2001, 28(22): 4303-4306. doi: 10.1029/2001GL013446
    [12]
    PHILIP J R. The fluid mechanics of fracture and other junctions[J]. Water Resources Research, 1988, 24(2): 239-246. doi: 10.1029/WR024i002p00239
    [13]
    BERKOWITZ B, NAUMANN C, SMITH L. Mass transfer at fracture intersections: an evaluation of mixing models[J]. Water Resources Research, 1994, 30(6): 1765-1773. doi: 10.1029/94WR00432
    [14]
    ROBINSON J W, GALE J E. A laboratory and numerical investigation of solute transport in discontinuous fracture systems[J]. Groundwater, 1990, 28(1): 25-36. doi: 10.1111/j.1745-6584.1990.tb02226.x
    [15]
    STOCKMAN H W, JOHNSON J, BROWN S R. Mixing at fracture intersections: influence of channel geometry and the Reynolds and Peclet Numbers[J]. Geophysical Research Letters, 2001, 28(22): 4299-4302. doi: 10.1029/2001GL013287
    [16]
    PARK Y J, LEE K K. Analytical solutions for solute transfer characteristics at continuous fracture junctions[J]. Water Resources Research, 1999, 35(5): 1531-1537. doi: 10.1029/1998WR900002
    [17]
    WOLFSBERG A. Rock Fractures and Fluid Flow: Contemporary Understanding and Applications[M]. Washington D C: National Academy Press, 1996.
    [18]
    JOHNSON J, BROWN S, STOCKMAN H. Fluid flow and mixing in rough-walled fracture intersections[J]. Journal of Geophysical Research: Solid Earth, 2006, 111(B12): B12206.
    [19]
    李崴, 王者超, 毕丽平, 等. 辐射流条件下裂隙岩体渗透性表征单元体尺寸与等效渗透系数[J]. 岩土力学, 2019, 40(2): 720-727.

    LI Wei, WANG Zhechao, BI Liping, et al. Representative elementary volume size for permeable property and equivalent permeability of fractured rock mass in radial flow configuration[J]. Rock and Soil Mechanics, 2019, 40(2): 720-727. (in Chinese)
    [20]
    LIU J, WANG Z C, QIAO L P, et al. Nonlinear flow model for rock fracture intersections: the roles of the intersecting angle, aperture and fracture roughness[J]. Rock Mechanics and Rock Engineering, 2022, 55(4): 2385-2405. doi: 10.1007/s00603-022-02784-0
    [21]
    李传亮. 油藏工程原理[M]. 2版. 北京: 石油工业出版社, 2011.

    LI Chuanliang. Principle of Reservoir Engineering[M]. 2nd ed. Beijing: Petroleum Industry Press, 2011. (in Chinese)
    [22]
    PEACOCK D C P, SANDERSON D J, ROTEVATN A. Relationships between fractures[J]. Journal of Structural Geology, 2018, 106: 41-53. doi: 10.1016/j.jsg.2017.11.010
    [23]
    DIJK P, BERKOWITZ B. Precipitation and dissolution of reactive solutes in fractures[J]. Water Resources Research, 1998, 34(3): 457-470. doi: 10.1029/97WR03238
    [24]
    王志良, 申林方, 徐则民, 等. 岩体裂隙面粗糙度对其渗流特性的影响研究[J]. 岩土工程学报, 2016, 38(7): 1262-1268.

    WANG Zhiliang, SHEN Linfang, XU Zemin, et al. Influence of roughness of rock fractureon seepage characteristics[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(7): 1262-1268. (in Chinese)
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