School of Mining Engineering, Anhui University of Science and Technology, Huainan, China
In order to study the compaction of filling gangue in goaf after solid filling in coal mine, coal gangue with different particle sizes was selected to carry out confined compression test by continuous gradation and single particle size ratio scheme. At the same time, acoustic emission instrument was used to monitor the internal damage of gangue. The conclusions are as follows: 1) The gangue has better stability than the single ratio scheme in the continuous grading scheme; 2) Large-size gangue produces more energy when it is destroyed, and acoustic emission activities are more frequent. The conclusion of this experiment can better help to grasp the law of overlying strata movement after solid filling in coal mine, so as to better control the roof activity.
Gangue compression, Acoustic emission, Mechanical properties
Enlong Zou. Study on Bearing Capacity and Acoustic Emission Characteristics of Continuous-Discontinuous Gangue Ratio Scheme. Academic Journal of Architecture and Geotechnical Engineering (2023) Vol. 5, Issue 7: 51-56. https://doi.org/10.25236/AJAGE.2023.050708.
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