Abstract
The migration law of dust in the roadway is the basis of dust control, but most of the relevant studies are based on the horizontal roadway, ignoring the roadway inclination. Therefore, numerical simulation and similar experiments are used to systematically study the settlement and diffusion law of dust in roadways with different inclination angles. The results show that the roadway inclination has little effect on the structure of the convection field, but the roadway inclination will change the law of dust transport in the roadway. In the elevation roadway, with the increase of elevation, the settling particle size and distance of dust will increase, which is conducive to dust discharge, but it will also cause secondary dust in the roadway. In the depression angle roadway, with the increase of depression angle, the particle size and distance of dust settlement decrease, which is conducive to dust settlement, but will cause dust accumulation in front of the roadway. Based on this, it is proposed to reduce the wind speed in elevation roadway and increase the wind speed in depression roadway, which provides a basis for improving the dust transport theory and prevention and control work in heading roadway.
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Funding
This work was supported by the National Natural Science Foundation of China (Grant No.: 51974109, 51904095), the Program for Leading Talents in Scientific and Technological Innovation of Henan Province (Grant No.: 204200510032), the Scientific and Technological Projects of Henan Province (Grant No.: 202102310220), the Plan of Key Scientific Research Projects of Colleges and Universities in Henan Province (Grant No.: 20A620001), the Fundamental Research Funds for the Universities of Henan Province (Grant No.: NSFRF210301) and the Doctoral Fund of Henan Polytechnic University (Grant No.: B2019-55).
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All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by WM, JW and WZ. The first draft of the manuscript was written by XX, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Xu, X., Wei, J., Wang, M. et al. Influence of inclination angle on dust migration and settlement characteristics of excavation roadway. Environ Sci Pollut Res 29, 83304–83320 (2022). https://doi.org/10.1007/s11356-022-21607-x
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DOI: https://doi.org/10.1007/s11356-022-21607-x