露天采矿技术2023，Vol.38Issue(6)：15-20,6.DOI:10.13235/j.cnki.ltcm.2023.06.005
露天矿铲装作业点压风射流驱雾数值模拟研究
Study on numerical simulation of fog dispersal by compressed air jet at shovel loading operation point in Open-pit Mine
徐煦 1于海旭 1杜勇志 1闫海峰 1李强 1于景斌 1孙秋迪 2杨小彬2
作者信息
- 1. 大雁公司(神宝能源)宝日希勒露天煤矿,内蒙古 海拉尔 021008
- 2. 中国矿业大学(北京) 应急管理与安全工程学院,北京 100083
- 折叠
摘要
Abstract
Based on the characteristics of the flow field in the open space of open-pit mine,the fog dispersal technology of flow field of artificial interference operation point is proposed,The formation process of fog,the characteristics of jet disturbance and the interaction between fog and flow field are considered.The formation process of fog,the characteristics of jet disturbance and the interaction between fog and flow field are considered,building a reasonable mathematical model,the characteristics of jet spray flow field are simulated.As a result,the same strong fog gushing time,the fog concentration that the same shovel loading operation point is lower when using pressurized air jet fog dispersal technology.With the continuous outflow of strong dense fog,the influence of pressure air jet on fog concentration increases first and then decreases.The momentum exchange between the fast jet and the fog particles,and the velocity of the fog particles which the pressure air jet passes is large.The jet carries fog particles along the direction of the pressure air jet.In the horizontal direction in front of the electric shovel,fog particles carried by the jet field migrated to both sides of the electric shovel.The air flow rises vertically near the coal wall.Thus the fog field concentration in front of the shovel is obviously reduced and the sight line of the shovel driver is improved.关键词
露天矿铲装作业点/压风射流/强浓雾/CFD模拟Key words
shovel loading operation point in open-pit mine/compressed air jet/strong dense fog/CFD simulation分类
矿业与冶金引用本文复制引用
徐煦,于海旭,杜勇志,闫海峰,李强,于景斌,孙秋迪,杨小彬..露天矿铲装作业点压风射流驱雾数值模拟研究[J].露天采矿技术,2023,38(6):15-20,6.
