The Influence of Ventilation Arrangement on the Mechanism of Dust Distribution in Woxi Pithead
Joint Authors
Li, Ming
Zhou, Zhi-yong
Qi, Chongchong
Hu, Pei
Niu, Tianpei
Tian, Long
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-10-22
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
Suppressing and removing mine dust from the working face is an important task for underground mines worldwide.
In this paper, a numerical study was carried out to investigate the influence of ventilation arrangement on the mechanism of dust distribution.
The Woxi Pithead of Hunan Chenzhou Mining Co., Ltd, China, was used as a case study, which adopted a widely used far-pressing-near-absorption (FPNA) ventilation system.
Based on the theory of gas-solid two-phase flow, the program ANSYS Fluent was utilized, and the three-dimensional airflow migration and dust diffusion numerical models were simulated.
The established computational fluid dynamics (CFD) models were validated using the airflow velocity data and the dust concentration data monitored at different positions from the operating coal mine.
A comprehensive sensitivity study was conducted to investigate the influence of four parameters on dust suppression, including the distance of pressure air duct outlet from working face (Lp-outlet), the distance of exhaust air duct inlet from working face (Le-inlet), the ratio of pressing air volume to lab sorption air volume (K), and the installation height of the air duct (H).
The optimum ventilation layout parameters were obtained through the simulation of the wind field and dust behaviour.
The results show that there were four regions during the airflow field, namely, the jet zone, the recirculation zone, the vortex zone, and the mixing zone of pressure and exhaust airflow.
All four parameters were found to have an important influence on the mass concentration of dust, and the optimum ventilation layout parameters were determined to be Lp-outlet = 18 m, Le-inlet = 3 m, K = 1.2, and H = 1.6 m.
American Psychological Association (APA)
Zhou, Zhi-yong& Hu, Pei& Qi, Chongchong& Niu, Tianpei& Li, Ming& Tian, Long. 2018. The Influence of Ventilation Arrangement on the Mechanism of Dust Distribution in Woxi Pithead. Shock and Vibration،Vol. 2018, no. 2018, pp.1-13.
https://search.emarefa.net/detail/BIM-1215517
Modern Language Association (MLA)
Zhou, Zhi-yong…[et al.]. The Influence of Ventilation Arrangement on the Mechanism of Dust Distribution in Woxi Pithead. Shock and Vibration No. 2018 (2018), pp.1-13.
https://search.emarefa.net/detail/BIM-1215517
American Medical Association (AMA)
Zhou, Zhi-yong& Hu, Pei& Qi, Chongchong& Niu, Tianpei& Li, Ming& Tian, Long. The Influence of Ventilation Arrangement on the Mechanism of Dust Distribution in Woxi Pithead. Shock and Vibration. 2018. Vol. 2018, no. 2018, pp.1-13.
https://search.emarefa.net/detail/BIM-1215517
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1215517