Numerical simulation Study of Dust Concentration Distribution Regularity in Cavern Stope
Based on the theory of gas-solid two-phrase flow and the characteristics of cavern stope a model of dust migration was established. The dust concentration changing of cavern stope by ventilation in 20 minutes after blasting and the dust trajectory in different wind speed were simulated by Fluent Software. The results show that distribution of dust concentration is significantly affected by flow field of airway in cavern, and the dust concentration of inlet is higher than that of outlet and the highest one on the corner of inlets side. In the stope, the smaller the wind speed of inlet is, the shorter of dust can be captured, settled and discharged, the more obviously affected by the trajectory of gas flow field. It goes into the stage of clean cycle emissions after 60s, the speed of dust concentration dropped is the biggest between 0s and 70s, the main dust in stope is respirable dust after 70s, it needs much time to settlement.
Cavern stope Dust concentration distribution Gas-solid two-phase flow Fluent Software Numerical simulation
SA Zhanyou LI Feng Qin Bo Pan Xiaohong
Department of Safety Engineering, Qingdao Technological University, Qingdao 266520, China Xuejiadao Street Office of Qingdao Development Area, Qingdao 266520, China
国际会议
The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)
北京
英文
230-235
2011-10-27（万方平台首次上网日期，不代表论文的发表时间）