Academic Journal of Architecture and Geotechnical Engineering, 2023, 5(7); doi: 10.25236/AJAGE.2023.050708.
Enlong Zou
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.
[1] Feng Guorui, Du Xianjie, Guo Yuxia, et al. Basic theory of struc-tural filling mining and conception of underground space utilization[J]. Journal of China Coal Society, (2019), 44(1): 74-84.
[2] Yang Ke, Wei Zhen, Zhao Xinyuan, et al. The theory and tech-nology of green filling and mining under solid waste in coal powerbases in the Yellow River Basin[J]. Journal of China Coal Soci-ety, (2021) 1-14 [2021-11-12].
[3] Yang Yu, Wang Bingfen, Zheng Zhiming. Experimental investigation on compaction energy dissi-pation of coal gangue filling material[J]. Bulletin of theChinese Ceramic Society, (2016). 35(11):3511-3516.
[4] HUANG Yanli, LI Junmeng, TENG Yuncong, et al. Numerical simulation study on macroscopic mechanical behaviors and micro-motion characteristics of gangues under triaxial compression[J]. Powder Technology, (2017) 320:668-684.