Review of visualisation methods of studying the seepage mechanism in fractured rocks

He, Lei; Xiao, Huaiguang; Cui, Yunkang; Liu, Songyue; Chen, Jian

doi:10.1007/s40948-021-00303-z

Cited by 4 publications

(2 citation statements)

References 132 publications

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“…Testing research is an important means to study the hydromechanical coupling phenomena of rock materials, including stress-seepage behavior and the seepage law of rock materials [62]. Many scholars have conducted a lot of work in this field and achieved rich results.…”

Section: Hydromechanical Coupling Testmentioning

confidence: 99%

A Review of Hydromechanical Coupling Tests, Theoretical and Numerical Analyses in Rock Materials

Zhao

Liu

Lin

et al. 2023

Water

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The hydromechanical coupling behavior of rocks is widely present in the fields of rock mechanics and engineering studies. Analyzing and summarizing the relevant literature, the current status of experimental and coupling theory research on hydromechanical coupling is systematically described, the commonly used numerical simulation methods and their applications are briefly introduced, and the hydromechanical coupling problems in mining engineering, water conservancy, and hydropower engineering, slope engineering, tunneling engineering, and other fields are analyzed. Regarding the current status of studies on the hydromechanical coupling behavior of rocks, the test research aspect needs to further enhance the test studies on the triaxial shear permeability of rock material, and adopt a combination of macroscopic, fine, and microscopic methods to study the hydraulic coupling problems of rock materials from different scales. To couple theory, the traditional concepts are broken through, and new coupling theories and mathematical models are used to explain and solve the relevant practical problems. Meanwhile, the application of interdisciplinary approaches to solving coupling problems in the future is emphasized. In terms of numerical simulation and engineering applications, new large data algorithms are developed to improve the efficiency of simulation calculations. In addition, consideration should be given to the numerical simulation of coupling effects, the coupled rheological effects, and the coupled dynamic properties of rock masses under high-ground stress and high water pressure.

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Section: Hydromechanical Coupling Testmentioning

confidence: 99%

A Review of Hydromechanical Coupling Tests, Theoretical and Numerical Analyses in Rock Materials

Zhao

Liu

Lin

et al. 2023

Water

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“…Natural rock mass is a kind of strongly heterogeneous porous medium with multi-scale complex structure and disordered initial defects (Yang and Liu, 2021;Ishola et al, 2022). A deep understanding of the mechanical response and deformation-cracking behavior contributes to the highefficiency extraction of geo-energy and long-term safety of underground engineering projects (Pardoen et al, 2020;He et al, 2021;Song et al, 2022). Many scholars have performed hydraulic cutting and wire cutting to fabricate initial defects in natural rocks (e.g., sandstone, marble etc.)…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical modeling of deformation-cracking mechanics of 3D-printed rock samples with single fracture

Song

Tian

et al. 2023

Adv. Geo-Energy Res.

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The analysis of mechanical response and deformation-cracking behavior contributes to the high-efficiency extraction of geo-energy and long-term safety of underground engineering structures. Compared to natural cores, the mechanical properties of 3D-printed samples made from quartz sand as raw material are relatively homogeneous, and can be used for quantitative studies on the influence of natural defects on the mechanical properties of rocks. In this work, 3D-printed samples with single fractures of different crack angles, lengths and widths were fabricated and used for uniaxial compression tests. Adopting the digital image correlation method, the stress-strain distribution during uniaxial compression tests were visualized, and the influence of prefabricated fracture characteristics (dip angle, length, and width) on the deformation-failure process were studied. An extended finite element method subroutine for ABAQUS ® software was modeled and used for the uniaxial compression simulation, which was validated by experiments. Then, the influence of mechanical parameters (Young's modulus, Poisson's ratio, cohesion, and internal friction angle) on the deformation-cracking mechanics were simulated and studied. The results indicate that, compared to the intact sample, fractures reduce the sample strength. With the extension of fracture length and width, or the decline of fracture angle, both the peak strain and strength of the 3D-printed samples decrease. The splitting tensile failure, or shear failure, or both were determined for the 3D-printed samples with different fracture angles. For the same axial strain, the extension length of the new crack increases linearly with rising Young's modulus and decreases linearly with increasing Poisson's ratio. The initial strain of new cracks decreases linearly with increasing Young's modulus, while little variations are found in samples with different Poisson's ratio. For the same axial displacement load, the peak stress increases linearly with growing internal friction angle and cohesion.

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Water-gas flow in rough rock fractures: insights from coupled triaxial compression experiments

et al. 2022

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Review of visualisation methods of studying the seepage mechanism in fractured rocks

Cited by 4 publications

References 132 publications

A Review of Hydromechanical Coupling Tests, Theoretical and Numerical Analyses in Rock Materials

A Review of Hydromechanical Coupling Tests, Theoretical and Numerical Analyses in Rock Materials

Experimental and numerical modeling of deformation-cracking mechanics of 3D-printed rock samples with single fracture

Water-gas flow in rough rock fractures: insights from coupled triaxial compression experiments

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