Development of a rotatable similar simulation experimental system for steep coal seam mining
Journal of Engineering, Design and Technology
ISSN: 1726-0531
Article publication date: 1 February 2021
Issue publication date: 15 November 2021
Abstract
Purpose
Currently, the existing similar simulation is still limited in the following aspects: un-rotatable laboratory devices, the difficulty in the pavement on steep seams and great error of the experimental data.
Design/methodology/approach
To address above-mentioned problems, this study combined theoretical analysis and numerical simulation and developed a rotatable experimental system for similar simulation on steep coal seam mining on the premise of ensuring experimental safety.
Findings
The present experimental system mainly consists of the model support, the rotation system and the bearing system. By taking into account the experimental requirements and actual laboratory space, the sizes of the model support and the bearing system were determined. Considering the requirements in space limit and rotation stability, the rotation mode of vertical sliding on the left side and the horizontal sliding on the lower side was designed.
Originality/value
Using programmable logic controller automatic angle control technology, the rotation angle, velocity and displacement of the model can be automatically adjusted and controlled so as to achieve safe rotation and precise control. Finally, the calculation method of the mass of the required similar materials for paving the coal strata at different inclination angles and in different horizons was analyzed, and the related mass proportion calculation software was developed.
Keywords
Acknowledgements
Financial supported by the National Natural Science Foundation of China (52004270), the Independent Research Project of State Key Laboratory of Coal Resources and Safe Mining, CUMT(SKLCRSM18X003) and the China Postdoctoral Science Foundation (2019M652020). The authors gratefully acknowledge financial support of the above items.
Citation
Hongsheng, T., Changwen, H. and Chenye, G. (2021), "Development of a rotatable similar simulation experimental system for steep coal seam mining", Journal of Engineering, Design and Technology, Vol. 19 No. 6, pp. 1373-1386. https://doi.org/10.1108/JEDT-08-2020-0329
Publisher
:Emerald Publishing Limited
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