Effect of antenna size on rock mass breaking efficiency under open-ended microwave treatment

Antenna size is a critical factor influencing the efficiency of open-ended microwave rock-breaking. An electromagnetic-thermal-mechanical coupling model was developed to systematically investigate the influence of antenna size on the temperature distribution within the rock mass under microwave trea...

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Bibliographic Details
Published inThermal science Vol. 29; no. 2 Part B; pp. 1259 - 1265
Main Authors Xue, Shou-Ning, Zhang, Yang, Luo, Jun, Xu, Fei-Long, Yang, Ben-Gao
Format Journal Article
LanguageEnglish
Published 2025
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Summary:Antenna size is a critical factor influencing the efficiency of open-ended microwave rock-breaking. An electromagnetic-thermal-mechanical coupling model was developed to systematically investigate the influence of antenna size on the temperature distribution within the rock mass under microwave treatment. Furthermore, the evolution of rock mass damage was analyzed based on the stress filed induced by microwave treatment. The results demonstrate that decreasing the antenna size can significantly enhance the electromagnetic power loss density, thereby accelerating the rock-breaking process. However, a moderate increase in antenna size can broaden the extent of rock mass damage and improve the overall efficiency of microwave energy utilization.
ISSN:0354-9836
2334-7163
DOI:10.2298/TSCI2502259X