Quantitative Analysis of Infrared Thermal Images in Rock Fractures Based on Multi-Fractal Theory: Fid-Bau Portal

Fachinformationsdienst BAUdigital

A platform for research: civil engineering, architecture and urbanism

Quantitative Analysis of Infrared Thermal Images in Rock Fractures Based on Multi-Fractal Theory

Bin Miao / Xinyu Wang / Hongru Li

Rock disasters caused by rock fractures seriously threaten the safe and sustainable mining of deep coal resources. The infrared thermal imaging of rock fractures has a non-uniform distribution. This is important information for the monitoring and early warning of rock mass instability. In this paper, the multi-fractal theory was introduced to analyze the infrared thermal image obtained from the uniaxial loading of sandstone, which is expected to provide quantitative indicators for the infrared monitoring of rock failure. The results show that the multi-fractal parameters $Δ α$ (non-uniformity of temperature) and $Δ f$ (frequency diversity of minimum and maximum temperature) can be used to describe the distribution of the thermal field; they are sensitive to the rock macro fracture. Both $Δ α$ and $Δ f$ are constant during the initial loading stage. When the samples yield and there is a failure in the later stage of loading, the $Δ α$ and $Δ f$ change abruptly. The sudden change in $Δ α$ and $Δ f$ can be regarded as the precursor to rock failure. The research results preliminarily show the feasibility and potential of multi-fractal analysis in rock mass disaster monitoring and early warning.

Access

Page navigation

Document information

Export, share and cite

Quantitative Analysis of Infrared Thermal Images in Rock Fractures Based on Multi-Fractal Theory

Bin Miao / Xinyu Wang / Hongru Li

Rock disasters caused by rock fractures seriously threaten the safe and sustainable mining of deep coal resources. The infrared thermal imaging of rock fractures has a non-uniform distribution. This is important information for the monitoring and early warning of rock mass instability. In this paper, the multi-fractal theory was introduced to analyze the infrared thermal image obtained from the uniaxial loading of sandstone, which is expected to provide quantitative indicators for the infrared monitoring of rock failure. The results show that the multi-fractal parameters $Δ α$ (non-uniformity of temperature) and $Δ f$ (frequency diversity of minimum and maximum temperature) can be used to describe the distribution of the thermal field; they are sensitive to the rock macro fracture. Both $Δ α$ and $Δ f$ are constant during the initial loading stage. When the samples yield and there is a failure in the later stage of loading, the $Δ α$ and $Δ f$ change abruptly. The sudden change in $Δ α$ and $Δ f$ can be regarded as the precursor to rock failure. The research results preliminarily show the feasibility and potential of multi-fractal analysis in rock mass disaster monitoring and early warning.

Quantitative Analysis of Infrared Thermal Images in Rock Fractures Based on Multi-Fractal Theory

Bin Miao / Xinyu Wang / Hongru Li

Rock disasters caused by rock fractures seriously threaten the safe and sustainable mining of deep coal resources. The infrared thermal imaging of rock fractures has a non-uniform distribution. This is important information for the monitoring and early warning of rock mass instability. In this paper, the multi-fractal theory was introduced to analyze the infrared thermal image obtained from the uniaxial loading of sandstone, which is expected to provide quantitative indicators for the infrared monitoring of rock failure. The results show that the multi-fractal parameters $Δ α$ (non-uniformity of temperature) and $Δ f$ (frequency diversity of minimum and maximum temperature) can be used to describe the distribution of the thermal field; they are sensitive to the rock macro fracture. Both $Δ α$ and $Δ f$ are constant during the initial loading stage. When the samples yield and there is a failure in the later stage of loading, the $Δ α$ and $Δ f$ change abruptly. The sudden change in $Δ α$ and $Δ f$ can be regarded as the precursor to rock failure. The research results preliminarily show the feasibility and potential of multi-fractal analysis in rock mass disaster monitoring and early warning.

Access

Page navigation

Document information

Export, share and cite

Document information

Title:

Quantitative Analysis of Infrared Thermal Images in Rock Fractures Based on Multi-Fractal Theory

Contributors:

Bin Miao (author) / Xinyu Wang (author) / Hongru Li (author)

Published in:

Sustainability, Vol 14, Iss 11, p 6543 (2022)

Publication date:

2022

ISSN:

DOI:

https://doi.org/10.3390/su14116543

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

Unknown

Keywords:

quantitative analysis , infrared thermal image , multi-fractal theory , sandstone , fracture , Environmental effects of industries and plants , TD194-195 , Renewable energy sources , TJ807-830 , Environmental sciences , GE1-350

Metadata by DOAJ is licensed under CC BY-SA 1.0

Similar titles

Solute transport in rock fractures with fractal surfaces

Amadei, B. / Illangasekare, T. | British Library Conference Proceedings

Fractal clustering of rock fractures and its modeling using cascade process

Yamamoto, H. / Kojima, K. / Tosaka, H. et al. | British Library Conference Proceedings | 1993

Scaling phenomena due to fractal contact in concrete and rock fractures

Borri-Brunetto, M. / Carpinteri, A. / Chiaia, B. | British Library Online Contents | 1999

Multi-Scale Research on Blasting Damage of Rock Based on Fractal Theory

Xiao, Chenglong / Yang, Renshu / Ding, Chenxi et al. | Springer Verlag | 2024

An estimation of flow channels in a natural rock using fractal of fractures

Nakaya, S. / Kondoh, H. / Nishikuni, M. et al. | British Library Conference Proceedings | 2001