Method for visualizing the shear process of rock joints using 3D laser scanning and 3D printing techniques

Huang, Man; Hong, Chenjie; Sha, Peng; Du, Shigui; Luo, Zhiwei; Tao, Zhigang

doi:10.1016/j.jrmge.2022.02.013

Cited by 12 publications

(4 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The selection of the ratio for intact transparent rock-like specimens can be based on the conclusions of the previous studies. By considering the comprehensive characteristics of basic mechanical parameters, failure modes, and the compressive-tensile strength ratio, a transparent rock-like material ratio similar to the mechanical properties of the target rock can be chosen to prepare rock-like specimens, and to carry out the related studies, such as the study of shear seepage and blasting characteristics of the rock mass 26 , 27 , 29 , 30 . By optimising the comprehensive similarity between intact transparent rock-like materials and real rocks, a more accurate representation of shear fracture, seepage and blasting characteristics of the rock mass can be achieved.…”

Section: Proportioning Optimization Of Different Fractured Specimenmentioning

confidence: 99%

See 1 more Smart Citation

Proportioning optimization of transparent rock-like specimens with different fracture structures

Cui,

Hao,

et al. 2024

Sci Rep

View full text Add to dashboard Cite

Clarifying the principles of proportioning optimization for brittle transparent rock-like specimens with differential fracture structures is crucial for the visualization study of the internal fracture and seepage evolution mechanisms in rock masses. This study, utilizing orthogonal experimental methods, uncovers the influence mechanisms, extents, and patterns by which the ratios of resin, hardener, and accelerator, along with the freezing duration, impact the mechanical characteristics of transparent rock-like specimens. Notably, it was observed that as the accelerator ratio and freezing time are increased, there’s a general decline in the uniaxial compressive strength, tensile strength, and elastic modulus of the specimens. In contrast, an increase in the hardener ratio initially leads to an enhancement in these mechanical properties, followed by a subsequent decrease. Under uniaxial compressive loading, the specimens exhibit four typical modes of failure: bursting failure, splitting failure, single inclined plane failure, and bulging failure. As the hardener and accelerator ratios increase, the mode of failure gradually shifts from bulging to bursting, with freezing time having a minor overall impact on the evolution of failure modes. The study proposes a method for inducing random three-dimensional closed fractures within the specimens and further clarifies the principles for optimizing the proportions of specimens with different fracture structures, such as intact, embedded regular, and random three-dimensional fractures. This research facilitates the in-depth application of transparent rock-like materials in various scenarios and provides theoretical guidance and technical support for visualizing the evolution of fracture and seepage characteristics within the fractured rock mass.

show abstract

Section: Proportioning Optimization Of Different Fractured Specimenmentioning

confidence: 99%

“…This material has been applied in blasting model experiments. Huang et al 27 used 3DP (3D printing) resin to create transparent specimens with natural joint surface morphologies. They enhanced the mechanical properties of the 3DP resin through a freezing method to more accurately replicate the characteristics of hard rocks.…”

Section: Introductionmentioning

confidence: 99%

Proportioning optimization of transparent rock-like specimens with different fracture structures

Cui,

Hao,

et al. 2024

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Liu [17] used the two-dimensional joint profile measured by the measurement method to reconstruct the three-dimensional morphology of rock joints. Huang [18] proposes a visualisation method for tracking the surface morphology of joints, which can accurately describe the total shear area at different shear stages.…”

Section: Study On the Morphology Of Structural Planementioning

confidence: 99%

Experimental Study on Shear Mechanical Properties and Section Morphology of Coal Samples

Huang¹,

Lu²,

Guo³

2023

WJET

View full text Add to dashboard Cite

The mechanical properties of rocks under cyclic and dynamic loading are important research topics for solving the structural stability of large engineering rocks. As underground mining in coal mines goes deeper, ground stresses are increasing and instability damage of coal rocks by shear loading is frequent. Therefore, in order to investigate the shear mechanical properties and section morphological characteristics of intact coal samples in the direct shear test, the RDS-200 rock direct shear instrument was used to carry out direct shear tests on intact coal samples under different normal stresses, and the shear section was scanned for three-dimensional morphology. The results show that: 1) from the strength characteristics, the peak shear strength of the coal samples increased linearly with increasing normal stress, and the residual shear strength increased logarithmically. 2) In terms of deformation characteristics, the peak shear displacement of the coal sample increases linearly with increasing normal stress, the pre-peak shear stiffness increases logarithmically, and the residual normal displacement decreases linearly. 3) From the morphological characteristics of the shear surface, with the increase of normal stress, the section transitions from high-order undulating to flattening type. The maximum height of the fracture surface profile and kurtosis coefficient of the shear section decreased linearly, and the profile area ratio and root mean square of slope decreased as a power function, i.e. the higher the normal stress, the smaller the undulation of the section, the sharpness of the roughness shape and the roughness coefficient JRC, and the flatter and smoother the section. The findings of this study can help to provide some reference for the evaluation of shear instability occurring in coal bodies under different normal stresses.

show abstract

“…3D printed specimens are divided into two main categories for a variety of research purposes: synthetic core for mechanical testing and permeability and petrophysical studies, and various physical models, e.g., those for the purposes of mining engineering [3,[6][7][8][9][10][11][12]. Petrophysical properties of different types of sandstones are discussed, inter alia, in [13][14][15][16][17][18], and various methods and results of measuring core properties are also described.…”

Section: Introductionmentioning

confidence: 99%

Real-Size Reconstruction of Porous Media Using the Example of Fused Filament Fabrication 3D-Printed Rock Analogues

Oskolkov,

Kochnev,

Krivoshchekov

et al. 2024

JMMP

View full text Add to dashboard Cite

The multi-scale study of rock properties is a necessary step in the planning of oil and gas reservoir developments. The amount of core samples available for research is usually limited, and some of the samples can be distracted. The investigation of core reconstruction possibilities is an important task. An approach to the real-size reconstruction of porous media with a given (target) porosity and permeability by controlling the parameters of FFF 3D printing using CT images of the original core is proposed. Real-size synthetic core specimens based on CT images were manufactured using FFF 3D printing. The possibility of reconstructing the reservoir properties of a sandstone core sample was proven. The results of gas porometry measurements showed that the porosity of specimens No.32 and No.46 was 13.5% and 12.8%, and the permeability was 442.3 mD and 337.8 mD, respectively. The porosity of the original core was 14% and permeability was 271 mD. It was found that changing the layer height and nozzle diameter, as well as the retract and restart distances, has a direct effect on the porosity and permeability of synthetic specimens. This study shows that porosity and permeability of synthetic specimens depend on the flow of the material and the percentage of overlap between the infill and the outer wall.

show abstract

Method for visualizing the shear process of rock joints using 3D laser scanning and 3D printing techniques

Cited by 12 publications

References 52 publications

Proportioning optimization of transparent rock-like specimens with different fracture structures

Proportioning optimization of transparent rock-like specimens with different fracture structures

Experimental Study on Shear Mechanical Properties and Section Morphology of Coal Samples

Real-Size Reconstruction of Porous Media Using the Example of Fused Filament Fabrication 3D-Printed Rock Analogues

Contact Info

Product

Resources

About