Experimental Study on Failure Characteristics and Energy Release Evolution of Coal Under Microwave Irradiation
Source abstract
Abstract
In order to reveal the failure characteristics and burst tendency of coal after microwave irradiation, the microstructure damage effect of microwave irradiation on coal was explored. The microstructure damage, burst tendency and acoustic emission energy characteristics of coal samples before and after microwave irradiation were quantitatively evaluated, and the mechanisms behind porosity growth and the weakening effect of microwave irradiation were revealed. The results show that the damage amount DE of coal samples after microwave irradiation is 0.018, the crack damage amount DP is 0.015, and the crack damage amount accounts for 83.3% of the damage of coal samples. It is determined that the damage-weakening effect of microwave-irradiated coal is affected by the increase in cracks. The monitoring data show that the acoustic emission signals generated by its development are concentrated in the crack compaction stage and elastic stage, the energy dissipated by crack failure is proportional to the number of cracks, and the ability of coal samples to accumulate energy is inversely proportional to the number of cracks. After microwave irradiation, the mechanical properties of coal samples are weakened, the uniaxial compressive strength index is reduced by 67.66%, and the burst energy index is reduced by 66.67%, indicating that microwave irradiation can effectively reduce the bursting tendency of coal.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Rock Mechanics and Modeling · Mineral Processing and Grinding · Geomechanics and Mining Engineering
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, China
Shanghai Datun Energy Co., Ltd., Xuzhou 221611, China
School of Geology and Mining Engineering, Xinjiang University, Urumqi 830000, China
Funding
Xinjiang Uygur Autonomous Region Key Research and Development Task Special Project
References (59)
Show source-provided references
1. Localization method of coal rock deformation for rock burst prediction
2. Theory and technical framework of coal mine rock burst origin prevention
3. Present situation and problems of coal mine rock burst prevention and control in China
4. Discussion on key problems in prevention and control system of coal mine rock burst
5. The method, mechanism and application of preventing rock burst by artificial liberation layer of roof
6. Study on prevention and control of rock burst staged fracturing area of composite hard roof based on zoning weakening
7. Main control factors of rock burst and its disaster evolution mechanism
8. Study on Water Pouring into Coal Seam to Prevent Rock-burst
9. Guo, X.S., and Ma, N.J. (2015). Rockburst Prevention Mechanism of and Experimental Research on Ultra-High Pressure Fixed-Point Hydraulic Fracturing in Coal Seams, China University of Mining and Technology.
10. Study on prevention technology of rock burst by break-tip blasting and its effect estimation
11. Wen, Y., Cao, A., Ding, C., Hu, Y., Xue, C., Peng, Y., and Song, S. (2023). Optimization of destressing parameters of water jet slits in rock burst coal seams for deep mining. Processes, 11.10.3390/pr11041056 ↗
12. Numerical simulation of rock-burst relief and prevention by water-jet cutting10.1016/j.ijrmms.2014.05.015 ↗
13. Investigate on the fractal characteristics and acoustic emission of coal fracture
14. An investigation into the influence of microwave treatment on mineral ore comminution10.1016/j.powtec.2004.08.006 ↗
15. Nejati, H., Hassani, F., and Radziszewski, P. (2012, January 15–18). Experimental investigation of fracture toughness reduction and fracture development in basalt specimens under microwave illumination. Proceedings of the Earth and Space 2012: Engineering, Science, Construction, and Operations in Challenging Environments, Pasadena, CA, USA.10.1061/9780784412190.036 ↗
16. A Review on Mineral Heating Characteristics and Rock Weakening Effect under Microwave Irradiation
17. Study on relative dielectric constant of dry rock
18. The micro-mechanism of microwave absorption of ceramic materials
19. Evolution characteristics of microwave irradiation on pore-permeability and surface cracks of coal with water: An experimental study
20. Experimental investigation on decreasing burst tendency of hard coal using microwave irradiation
21. Modification of coal samples with bursting liability subjected to microwave irradiation10.1155/2021/1867771 ↗
22. Energy analysis of the effectiveness of microwave-assisted fragmentation10.1016/j.mineng.2020.106642 ↗
23. Influences of the rock water cut on the penetrated depth of the microwave
24. Effect of microwave irradiation on pore and fracture evolutions of coal
25. Effect of cyclic microwave irradiation on pore and fracture evolutions of coal
26. Image and ultrasonic analysis-based investigation of coal core fracturing by microwave energy10.1016/j.ijrmms.2020.104232 ↗
27. Effects of microwave-assisted pyrolysis on the microstructure of bituminous coals10.1016/j.energy.2019.115986 ↗
28. Qin, L.K., Chen, G.D., and Xu, G.Q. (2021). Research on the Crack Distribution and Evolution in Mineral Particles in Microwave Field. Nonferrous Met., 39–46.
29. 3D numerical study on microwave induced stresses in inhomogeneous hard rocks10.1016/j.mineng.2016.01.001 ↗
30. Experimental study on damage and deterioration characteristics of granite under different microwave power irradiation
31. Thawing and softening behaviors and underlying damage mechanisms of frozen quartz sandstone under microwave irradiation
32. Penetration enhancement effect and energy change of coal samples pretreated with different microwave powers
33. Failure behavior and energy evolution characteristics of deep roadway sandstone under different microwave irradiation modes10.1007/s11771-023-5237-4 ↗
34. Study on Basalt Damage Characteristics due to Microwave Irradiation Method
35. Experimental Study on Strength Degradation of Basalt with Microwave Irradiation
36. General Administration of Quality Supervision Inspection and Quarantine of the People’s Republic of China, and China National Standardization Administration (2009). Methods for Determining the Physical and Mechanical Properties of Coal and Rock—Part 7: Methods for Determining the Uniaxial Compressive Strength and Counting Softening Coefficient, General Administration of Quality Supervision Inspection and Quarantine of the People’s Republic of China.
37. Application of 1H NMR to hydration and porosity studies of lime–pozzolan mixtures10.1016/j.micromeso.2010.10.010 ↗
38. Applications and Characterization of NMR Relation Derived From Sphere-Capillary Model
39. The present situation and development analysis of microwave heating technology
40. Research and development on microwave-assisted ore comminution
41. Feasibility Study of Copper-Nickel Ore Enrichment Based on Microwave Irradiation
42. Fine quantitative characterization of pore and fracture of coal based on NMR and X-CT
43. Effect of Freeze-thaw Cycles on Mechanical Strength and Microscopic Pore Structure of Unclassified Tailings Cemented Mass
44. Effects of dynamic loads on development of internal microstructure and distribution of new surface fractures of coal
45. Quantitative principles of dynamic interaction between rock support and surrounding rock in rockburst roadways10.1016/j.ijmst.2024.12.009 ↗
46. A fractional order viscoelastic-plastic creep model for coal sample considering initial damage accumulation10.1016/j.aej.2021.02.054 ↗
47. Identifying crack initiation and propagation thresholds in brittle rock10.1139/t97-091 ↗
48. Study on Acoustic Emission and Characteristic Energy of Granite After High-Temperature Thermal Damage
49. Energy Mechanism of Deformation and Failure of Rock Masses
50. Characteristic analysis of thermal effect of coal under microwave radiation
51. Drying behaviors of low-rank coal under negative pressure: Kinetics and model10.1080/07373937.2016.1164712 ↗
52. Experimental study on mineral variation in coal under microwave irradiation and its influence on coal microstructure10.1016/j.jngse.2021.104303 ↗
53. Zu, D.L. (2004). Magnetic Resonance Imaging, Higher Education Press.
54. Micro-CT-based temporal and spatial evolution of fractures and pores in loaded coal
55. Microwave propagation and absorption and its thermo-mechanical consequences in heterogeneous rocks10.1016/j.minpro.2015.01.003 ↗
56. Experiment on progressive failure law of tar-rich coal under microwave-water interaction
57. Recent developments in microwave-assisted comminution10.1016/j.minpro.2003.09.006 ↗
58. Criteria for Strength and Structural Failure of Rock based on Energy Dissipation and Energy Release Principles
59. Research on Crack Developing Process in Non-Interpenetrated Crack Media by using CT