Mesoscopic damage evolution characteristics of jointed sandstone under different loading conditions

Hao, Zhibin; Zuo, Yujun; Líu, Hao; Zhu, Zehua; Lin, Jianyun; Sun, Wenjibin; Pan, Chao; Zheng, Lulin

doi:10.1007/s40948-022-00390-6

Cited by 6 publications

(1 citation statement)

References 31 publications

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“…It was concluded, from the analysis, that the parts with a higher degree of pore aggregation are potential rupture locations, and the areas around pores form unsafe zones, which are prone to stress concentration, leading to destabilization of the matrix element and the alteration of its mechanical properties. The evolution of the displacement field corresponds to the development of damage deformation inside the model [55]. With continued loading, the cracks around the pores gradually interconnect to form macroscopic cracks, eventually leading to loss of the load-bearing capacity of the specimen.…”

Section: Analysis Of the Rupture Process Of The Uniaxially Compressed...mentioning

confidence: 99%

Numerical Simulation Study of the Effect of Fine View Pore Structure on Rock Burst

et al. 2023

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With the gradual shift of coal mining to deeper levels in recent years, rock burst has become one of the primary dynamic hazards faced in deep mining. It has been shown that the pore structure in rocks affects the mechanical properties, but the relationship with the rock burst phenomenon still needs to be clarified. In this paper, we investigated the causes and effects of pore structure on impact mechanical properties using RFPA2D numerical simulation software, established several numerical models with different porosities and pore diameters, and analyzed the stress-strain curves, the relationships between porosity and pore diameter and each the bursting liability indices of the coal rock body were elaborated, and the fitting equations in the range of porosity (0%~10%) and pore diameter (0.25~2.0 mm) were obtained. The results showed that the increase in porosity and pore diameter effectively attenuated the bursting ability of coal rocks, which has some reference significance for the study of early warning and prevention of rock burst phenomenon.

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Section: Analysis Of the Rupture Process Of The Uniaxially Compressed...mentioning

confidence: 99%

Numerical Simulation Study of the Effect of Fine View Pore Structure on Rock Burst

et al. 2023

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Uniaxial Compression Testing of Sandstone under Microscope: Damage Characteristics and Failure Mechanisms

Hu,

Xia,

Chen

et al. 2024

KSCE J Civ Eng

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Mesoscopic damage evolution characteristics of sandstone with original defects based on micro-ct image and fractal theory

et al. 2022

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Mesoscopic damage evolution characteristics of jointed sandstone under different loading conditions

Cited by 6 publications

References 31 publications

Numerical Simulation Study of the Effect of Fine View Pore Structure on Rock Burst

Numerical Simulation Study of the Effect of Fine View Pore Structure on Rock Burst

Uniaxial Compression Testing of Sandstone under Microscope: Damage Characteristics and Failure Mechanisms

Mesoscopic damage evolution characteristics of sandstone with original defects based on micro-ct image and fractal theory

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