THERMAL SCIENCE
International Scientific Journal
EFFECT OF ANTENNA SIZE ON ROCK MASS BREAKING EFFICIENCY UNDER OPEN-ENDED MICROWAVE TREATMENT
ABSTRACT
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.
KEYWORDS
PAPER SUBMITTED: 2024-08-20
PAPER REVISED: 2024-11-08
PAPER ACCEPTED: 2024-11-22
PUBLISHED ONLINE: 2025-06-01
THERMAL SCIENCE YEAR
2025, VOLUME
29, ISSUE
Issue 2, PAGES [1259 - 1265]
- Yang, B. G., et al., Analysis of the Thermal Mechanism and Temporal and Spatial Evolution of the Thermal Field of Deep Sandstone under Microwaves, Thermal Science, 24 (2020), 6B, pp. 3877-3886
- Wang, Y. L., et al., Microwave Assistance Effect for Rock Breaking of TBM Disc Cutter Using the Coupled Method of Continuum and Grain-Based Model, Engineering Analysis with Boundary Elements, 159 (2024), Feb., pp. 466-484
- Bai, Y. B., et al., Micro-Mechanical Properties of Main Rock-Forming Minerals in Granite under Microwave Irradiation, Rock Mechanics and Rock Engineering, 57 (2024), July, pp. 9371-9407
- Feng, X. T., et al., An Open-end High-Power Microwave-Induced Fracturing System for Hard Rock, Journal of Rock Mechanics and Geotechnical Engineering, 15 (2023), 12, pp. 3163-72
- Ma, Z. J., et al., Enhancing Rock Breakage Efficiency by Microwave Fracturing: A study on Antenna Selection, Energy, 288 (2024), ID129876
- Gao, M. Z., et al., The Mechanism of Microwave Rock Breaking and Its Potential Application Rock-Breaking Technology in Drilling, Petroleum Science, 19 (2022), 3, pp. 1110-1124
- Gautam, P. K., et al., Effect of High Temperature on Physical and Mechanical Properties of Jalore Granite, Journal of Applied Geophysics, 159 (2018), Dec., pp. 460-474
- Lu, G. M., et al., The Influence of Microwave Irradiation on Thermal Properties of Main Rock-Forming Minerals, Applied Thermal Engineering, 112 (2017), Feb., pp. 1523-1532
- Yang, B. G., et al., Exploration of Weakening Mechanism of Uniaxial Compressive Strength of Deep Sandstone under Microwave Irradiation, Journal of Central South University, 29 (2022), 2, pp. 611-623
- Liu, J. J., et al., Experimental and Simulation Studies on Damage Characteristics, Crack Development Patterns, and Strength Reduction Mechanisms of Sandstone under Laser Irradiation, Geomechanics and Geophysics for Geo-Energy and Geo-Eesources, 10 (2024), 1, pp. 1-33
- Zhu, W. C., et al., Coupled Thermal-Hydraulic-Mechanical Model During Rock Damage and Its Preliminary Application, Rock and Soil Mechanics, 30 (2009), 12, pp. 3851-3857
- Lin, H., et al., Numerical Investigation of Temperature Distribution and Thermal Damage of Heterogeneous Coal under Liquid Nitrogen Freezing, Energy, 267 (2023), ID126592
- Zhu, W. C., et al., Micromechanical Model for Simulating the Fracture Process of Rock, Rock Mechanics and Rock Engineering, 37 (2004), Nov., pp. 25-56
- Wei, C. H., et al., Numerical Simulation of Excavation Damaged Zone under Coupled Thermal-Mechanical Conditions with Varying Mechanical Parameters, International Journal of Rock Mechanics and Mining Sciences, 75 (2015), Apr., pp. 169-181
