綜掘工作面粉塵運移的數值模擬及壓風分流降塵方式研究

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基金項目:

王寬誠教育基金會資助項目

Numerical simulation of dust migration and study on dust removal modes with the forced ventilation shunt in a fully mechanized workface

State Key Laboratory of Coal Resources and Safety Mining, China University of Mining and Technology(Beijing), Beijing 100083 China

摘要: 針對綜掘工作面產生塵量高,煤塵濃度大,降塵效率低的現狀,結合流體力學、氣固兩相流理論和射流理論等相關理論,采用FLUENT模擬技術,研究"長壓短抽"式除塵通風時掘進巷道中粉塵運移和分布規律,對比分析了壓入風量、抽吸比及抽、壓風筒口位置等通風參數對粉塵濃度及分布范圍的影響,提出了壓風分流通風方式,并對其降塵效果進行了模擬分析.
- 煤礦開采 /
- 煤塵 /
- 通風 /
- 數值模擬
Abstract: Large concentration of coal dust exists in the fully mechanized workface due to high dust production and low dust removal efficiency.Based on fluid dynamics,the gas-solid two-phase flow theory and the jet theory,the dust migration mechanism and distribution in a roadway under far-pressing-near-suction ventilation were studied with the FLUENT software.The effects of ventilation parameters such as the air quantity of forced ventilation,the ratio of blowing to suction and the position of the force-ventilated outlet on the concentration and distribution of the dust were analyzed comparatively.A forced ventilation shunt mode was proposed,and its dust removal efficiency was simulated.
- coal mines and mining /
- coal dust /
- ventilation /
- numerical simulation