ANISOTROPY AND SIZE EFFECT OF THE FRACTAL CHARACTERISTICS OF ROCK FRACTURE SURFACES UNDER MICROWAVE IRRADIATION: AN EXPERIMENTAL RESEARCH

Ben-Gao Yang, Jing Xie, Yi-Ming Yang, Jun-Jun Liu, Si-Qi Ye, Rui-Feng Tang and Ming-Zhong Gao
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Ben-Gao Yang: State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, P. R. China†Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization, Institute of Deep Earth Sciences and Green Energy, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, P. R. China
Jing Xie: State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, P. R. China
Yi-Ming Yang: State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, P. R. China
Jun-Jun Liu: State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, P. R. China
Si-Qi Ye: State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, P. R. China
Rui-Feng Tang: State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, P. R. China
Ming-Zhong Gao: State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, P. R. China†Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization, Institute of Deep Earth Sciences and Green Energy, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, P. R. China

FRACTALS (fractals), 2024, vol. 32, issue 04, 1-14

Abstract: Studying the rough structure characteristics of rock fracture surfaces under microwave irradiation is of a great significance for understanding the rock-breaking mechanism. Therefore, this work takes fracture surface as the research object under three failure modes: microwave irradiation, uniaxial loading and microwave-uniaxial loading. The undulation and roughness are used to describe the morphological characteristics of the fractured surface. Research shows that the fracture surface under microwave irradiation is the smoothest, which exhibits undulation and rough fractal dimension in the range of 1–7mm and 2.0005–2.0657, respectively. The fractal anisotropy of the fracture surface is the most obvious under microwave irradiation. The roughness along the fracture surface is about 1.02 times that is perpendicular to the fracture direction. In the perspective of size effect characteristics, the roughness of the fracture surface under microwave irradiation shows a positive correlation with the selected size. The results provide a certain basis for interpreting the mechanism of microwave rock breaking.

Keywords: Microwave; Uniaxial Compression; Fracture Surface; Roughness; Fractal Dimension (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1142/S0218348X23401230

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