The Infrared Radiation Characteristics of Sandstone Fracture Seepage under Coupled Stress-Hydro Effect

Ruoyu Cui, Kewang Cao (), Xinci Li, Rana Muhammad Asad Khan, Naseer Muhammad Khan, Wei Liu, Qiangqiang Gao, Fagang Wang, Yuanzhong Yang, Jiangbo Quan and Saad S. Alarifi
Additional contact information
Ruoyu Cui: School of Art, Anhui University of Finance and Economics, Bengbu 233030, China
Kewang Cao: School of Art, Anhui University of Finance and Economics, Bengbu 233030, China
Xinci Li: School of Public Finance and Taxation, Zhongnan University of Economics and Law, Wuhan 430073, China
Rana Muhammad Asad Khan: Department of Mining Engineering, Pak-Austria Fachhochschule Institute of Applied Sciences and Technology, Haripur 22620, Pakistan
Naseer Muhammad Khan: Department of Sustainable Advanced Geomechanical Engineering, Military College of Engineering, National University of Sciences and Technology, Risalpur 23200, Pakistan
Wei Liu: Key Laboratory of Deep Coal Resource Mining, China University of Mining and Technology, Ministry of Education, Xuzhou 221116, China
Qiangqiang Gao: Key Laboratory of Deep Coal Resource Mining, China University of Mining and Technology, Ministry of Education, Xuzhou 221116, China
Fagang Wang: Key Laboratory of Deep Coal Resource Mining, China University of Mining and Technology, Ministry of Education, Xuzhou 221116, China
Yuanzhong Yang: Beijing Window Technology Co., Ltd., Beijing 100089, China
Jiangbo Quan: Zijin Mining Group Co., Ltd., Longyan 364200, China
Saad S. Alarifi: Department of Geology and Geophysics, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia

Sustainability, 2022, vol. 14, issue 24, 1-21

Abstract: Effective monitoring of rock fracture and seepage is an important information means to ensure the safety of geotechnical engineering. Therefore, sandstone samples were subject to uniaxial compression under different hydraulic conditions in the presence of infrared radiation and observation. This study uses the multiple infrared radiation indexes (ΔAIRT, IRV, VDIIT) and image data to analyze the influence of coupled stress-hydro effect of infrared radiation change on sandstone surface. The main findings are: (1) The surface temperature of sandstone samples rises in the compaction and linear elastic stages, keeps stable or decreases in the fracture development stage, and rapidly decreases in the post-peak failure stage. (2) The samples with internal water pressure not more than 0.30 MPa, surface temperature and load curve at the compaction and linear elastic stage have a strong power function relationship, which a coefficient of determination is 0.8900. (3) The IRV curve appears as a pulse jump at the time of water seepage. After that, both the fracture development and the post-peak failure stages have stepped up. The VDIIT curve also appears to be a pulse jump at the time of water seepage, and obvious up and down fluctuations exist before water seepage and fracture. (4) Based on the Pauta Criterion, by analyzing the values of VDIIT during the experiment, the early warning threshold of sandstone fracture seepage is determined to be 0.00559. The research finding can provide an experimental and theoretical basis for the early warning of flood accidents in underground rock engineering.

Keywords: coupled stress-hydro effect; uniaxial loading; infrared radiation; warning threshold; non-destructive monitoring (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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