Direct observations of hydraulic fracturing in rock bridge of granite specimens in grain-scale

Xing, Jinquan; Zhao, Cheng; Huang, Lin; Pan, Haoyu

doi:10.1088/1755-1315/861/4/042104

Cited by 3 publications

(1 citation statement)

References 9 publications

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“…Speckles can be sprayed directly onto the sample surface as black and white speckle particles, and the average size is determined based on the size of a single pixel. The speckle preparation method has been described by Xing et al [13]. • Installing the Sample in the Sealing Device: Before installation, the device was pre-filled with water to avoid air bubbles in the observation area.…”

Section: High-speed Camera Recording and Dic Analysismentioning

confidence: 99%

Method for macro-microscopic damage observation of rock hydraulic fracturing based on dic and thin section techniques

Xing,

Zhao,

Niu

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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This study conducted systematic studies and in-depth analyses of micromechanics of hydraulically induced crack propagation. This study introduced a method for observing macromicroscopic damage in rock hydraulic fracturing based on DIC and thin-section techniques. We developed an advanced sealed visualization system equipped with high-speed cameras and macrolenses to facilitate precise observation of the hydraulic fracturing process. Additionally, Digital Image Correlation was used to accurately track and analyze the evolution of fractures. Our methodology clearly distinguished between intergranular and transgranular cracks using polarized light microscopy, thereby offering novel insights into grain-scale damage and strain localization within crystalline rocks. This research contributes to the understanding of the mechanisms underlying hydraulic fracturing at both the macroscopic and microscopic scales.

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Section: High-speed Camera Recording and Dic Analysismentioning

confidence: 99%