Author
Yun Hua
Other affiliations: North China Institute of Science and Technology, Liaoning Technical University
Bio: Yun Hua is an academic researcher from Shandong University of Science and Technology. The author has contributed to research in topics: Airflow & Coal mining. The author has an hindex of 16, co-authored 33 publications receiving 1056 citations. Previous affiliations of Yun Hua include North China Institute of Science and Technology & Liaoning Technical University.
Topics: Airflow, Coal mining, Environmental science, Medicine, Coal
Papers
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TL;DR: In this paper, the authors made an in-depth analysis of the effects of an air curtain generator's radial and axial pressure airflow rate and a dust removal fan's exhaust airflow rate on the diffusion and pollution behaviors of dust through CFD technology and field measurements.
236 citations
TL;DR: In this paper, the authors combined FLUENT numerical simulation and field measurement for examining the dust's diffusion and pollution rules when both multi-radial swirling air-curtain generator and wet dust removal fan were used in the fully-mechanized excavation face.
117 citations
TL;DR: In this paper, the authors investigated the influence of air-curtain generators on the control of dust pollution in driving tunnels and found that, without an aircurtain generator, dust diffusion cannot be effectively controlled, dust pollution spreads widely and workers' health and safety are seriously compromised.
109 citations
TL;DR: In this article, a solidifying dust suppressant based on modified chitosan is synthesized and prepared through the chemical modification of NH2 with CH2CH(OH)CH2N+(CH3)CI− through the technique of Fourier transform infrared spectroscopy.
Abstract: In view of the fugitive dusts caused by wind disturbance and material handling in coal bunkers, surface plants, and open-air coal stocking yards of coal businesses, the solidifying dust suppressant based on modified chitosan is synthesized and prepared through the chemical modification of –NH2 with chitosan as a raw material and –NH2 was replaced by –CH2CH(OH)CH2N+(CH3)CI− through the technique of Fourier transform infrared spectroscopy. According to viscosity experiment results, the viscosity of the modified solidifying dust suppressant increased significantly. The coal particles suppressed by the dust suppressant as observed with a 50,000X scanning electron microscope were coagulated together, which indicated very good cohesion effect. In addition, wind erosion resistance experiment was conducted to analyze the wind erosion rate of coal powders before and after sprayed with the suppressant at different wind speeds, which indicated that the dust suppressant can effectively prevent fugitive dusts at a win...
99 citations
TL;DR: In this paper, the authors conduct numerical simulation on the airflow field and dust dispersion associated with these two ventilation methods, and the results indicate that the airflow pattern under the blower ventilation method is primarily dictated by the compressive jet field.
92 citations
Cited by
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TL;DR: In this paper, the authors made an in-depth analysis of the effects of an air curtain generator's radial and axial pressure airflow rate and a dust removal fan's exhaust airflow rate on the diffusion and pollution behaviors of dust through CFD technology and field measurements.
236 citations
TL;DR: In this article, the effect of air flowrate on pollutant dispersion pattern of coal dust particles at the fully mechanized mining face is investigated. And the authors aim to reduce the dust concentration through adjusting the air flow rate parameter.
181 citations
TL;DR: In this article, the authors used computational fluid dynamics (CFD) for numerical simulation of spray nozzles with three pore diameters of 1.6, 2.0, and 2.4.
166 citations
TL;DR: In this article, a highly simulated physical model of the goaf and multiple dust sources were established in order to obtain the optimal dust-removal air flow rate in the roadway, by combining the numerical simulation method, the influence of the flow rate on dust diffusion rules of the dust sources was analyzed.
160 citations
TL;DR: Among the various gels, the HPAM-Al3+/WG hydrogel exhibits the best seepage capacity, water retention capacity, compressive strength, and inhibition characteristics, which effectively resolve the post-water-loss cracking and pulverization problems commonly associated with inorganic consolidated silica gels.
145 citations