干旱区生态环境知识资源中心(Arid): Numerical Study on the Vibratory Compaction Mechanism of the Sand-Gabion Backfills in Underground Coal Mines

Arid

DOI	10.3390/min12111428
	Numerical Study on the Vibratory Compaction Mechanism of the Sand-Gabion Backfills in Underground Coal Mines
	Zhang, Zhiyi; Wang, Wei; Zhao, Bo
通讯作者	Wang, W
来源期刊	MINERALS
EISSN	2075-163X
出版年	2022
卷号	12 期号:11
英文摘要	Coal mine backfilling can effectively prevent large-scale movement of rock formations, not only improving the overall production capacity of the mine but also protecting the surface from destruction and maintaining the original ecological environment. Backfilling extent and backfills compactness are two factors determining the supporting effect on the overburdens in underground coal mines. To make full use of the aeolian sand as the backfill materials in underground coal mines in the desertification areas, Northwest China. Then, vibratory compaction was proposed to enlarge the compactness of these sand-gabion backfills by considering the limited working space. After that, the movement law of the sand particles during vibratory compaction, the influencing law of the vibratory parameters, and the gabion constraint on the ultimate compactness of the sand-gabion backfills were studied using the discrete element software PFC3D from the microscopic point of view. It was found that the aeolian sand particles are more likely to inter-squeeze under vibration than under static load. Furthermore, there are a series of optimal vibratory compaction parameters to the inner aeolian sand for each external gabion constraint strength. The optimal vibration parameters were frequency 50 HZ, excitation force 0.3 MPa, amplitude 40 KPa, and vibration time 4 s. Conclusions of this study can provide references for enlarging the compactness of the sand-gabion backfills in the underground goaf in the desertification area of Northwest China.
英文关键词	desertification area aeolian sand filling materials PFC numerical simulation vibration compaction
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000884104800001
WOS关键词	DYNAMIC-RESPONSE ; SIMULATION ; STRESS
WOS类目	Geochemistry & Geophysics ; Mineralogy ; Mining & Mineral Processing
WOS研究方向	Geochemistry & Geophysics ; Mineralogy ; Mining & Mineral Processing
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393804
推荐引用方式 GB/T 7714	Zhang, Zhiyi,Wang, Wei,Zhao, Bo. Numerical Study on the Vibratory Compaction Mechanism of the Sand-Gabion Backfills in Underground Coal Mines[J],2022,12(11).
APA	Zhang, Zhiyi,Wang, Wei,&Zhao, Bo.(2022).Numerical Study on the Vibratory Compaction Mechanism of the Sand-Gabion Backfills in Underground Coal Mines.MINERALS,12(11).
MLA	Zhang, Zhiyi,et al."Numerical Study on the Vibratory Compaction Mechanism of the Sand-Gabion Backfills in Underground Coal Mines".MINERALS 12.11(2022).