ANALYSIS OF STRESS AND STRUCTURAL CHARACTERISTICS OF SANDSTONE USING CT SCANNING AND FRACTAL THEORY

Gang Li, Yuan Miao, Jinsui Wu, Fengyan Zhang, Shangxian Yin, Bin Xu and Yuanyuan Li
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Gang Li: College of Mining, Liaoning Technical University, Fuxin, Liaoning 123000, P. R. China
Yuan Miao: College of Mining, Liaoning Technical University, Fuxin, Liaoning 123000, P. R. China
Jinsui Wu: ��Hebei State Key Laboratory of Mine Disaster Prevention, North China Institute of Science and Technology, Beijing 101601, P. R. China
Fengyan Zhang: ��Hebei State Key Laboratory of Mine Disaster Prevention, North China Institute of Science and Technology, Beijing 101601, P. R. China
Shangxian Yin: ��Hebei State Key Laboratory of Mine Disaster Prevention, North China Institute of Science and Technology, Beijing 101601, P. R. China
Bin Xu: ��Hebei State Key Laboratory of Mine Disaster Prevention, North China Institute of Science and Technology, Beijing 101601, P. R. China
Yuanyuan Li: ��Hebei State Key Laboratory of Mine Disaster Prevention, North China Institute of Science and Technology, Beijing 101601, P. R. China

FRACTALS (fractals), 2023, vol. 31, issue 08, 1-18

Abstract: The pores and fissures in loaded rock masses are the main channels for underground flow, and may cause serious accidents during the development of groundwater resources. This work presents an efficient method for analyzing the microstructure of the loaded rock mass using fractal theory and computed tomography (CT) scanning. A relation between the microstructure features of the sandstone porosity, fractal dimension, and loading stress is developed using an image identification technique. The results demonstrate that the distribution trends of sandstone samples’ slice porosities in the xz- and yz-directions are nearly identical, and the distribution in the xy-direction differs significantly from those in xz- and yz-directions. The total and connected porosities increase with the increase of stress, and the change can be fitted to straight lines. The fractal dimensions of the pores change significantly with stress or loading stress in the xy-direction.

Keywords: Anisotropy; CT Scanning; Fractal; Loading Stress (search for similar items in EconPapers)
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:wsi:fracta:v:31:y:2023:i:08:n:s0218348x23401710

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DOI: 10.1142/S0218348X23401710

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