Numerical study on dust movement and dust distribution for hybrid ventilation system in a laneway of coal mine |
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| Institution: | 1. State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining & Technology, Xuzhou, Jiangsu 221116, China;2. School of Mechanics & Civil Engineering, China University of Mining & Technology, Xuzhou 221116, China;3. School of Electric Power Engineering, China University of Mining & Technology, Xuzhou 221116, China;1. Minerals Metals and Materials Technology Centre, National University of Singapore, Kent Ridge 117576, Singapore;2. Mechanical Engineering, Masdar Institute of Science and Technology, Masdar City, Abu Dhabi 54224, United Arab Emirates;3. Department of Mining and Materials Engineering, McGill University, Montreal, Québec H3A 2B2, Canada;4. Department of Bioresource Engineering, McGill University, Québec H9X 3V9, Canada;1. School of Civil, Mining and Environmental Engineering, Faculty of Engineering and Information Sciences, University of Wollongong, Wollongong, NSW 2522, Australia;2. Tecpro Australia, Unit 4, 44 Carrington Rd, Castle Hill, NSW 2154, Australia;1. School of Civil, Mining and Environmental Engineering, Faculty of Engineering and Information Sciences, University of Wollongong, Wollongong, NSW 2522, Australia;2. College of Safety Science and Engineering, Xi’an University of Science and Technology, Xi’an 710054, China;3. College of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China;1. Key Laboratory of Ministry of Education for Mine Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao 266590, China;2. College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong Province, China;1. College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, China;2. State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China |
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| Abstract: | Coal dust disaster is the most serious problem in a laneway of coal mine. Dust movement regularity for comprehensive mechanized heading face is the key scientific issues for the principle and technology of dust prevention. The special topic on systematic study of the variation regularity of dust movement and dust distribution is presented with hybrid ventilation for the comprehensive mechanized heading face: Euler–Euler method was firstly established on the numerical platform for gas–solid two phase flow in a laneway. And the forces and the dynamic model of dust particles were performed in three-dimensional flow field. Then based on the visible simulations, the movement characteristics of diffusion, sedimentation and accumulation of dust particles were investigated under the action of the complex air flow, and the spatiotemporal variation of dust distribution was studied with hybrid ventilation system. Meanwhile, the obtained dust distribution regularities were compared with the obtainable experimental results. Finally, selected method on different ventilation patterns for dust control was brought out for the heading face according to the gained regularity. The research results is helpful for further understanding of the essence of dust movement with air flow, which could provide more suitable guidance for the principle of dust control and technology of ventilation. |
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| Keywords: | Dust movement Dust distribution Laneway Ventilation pattern Numerical simulation |
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