掘进巷道混合式通风数值模拟研究  

Numerical simulation on combined ventilation in excavation roadway

作　　者：邬长福[1,2] 金波[1] 陈祖云[1,2] 刘赟 

机构地区：[1]江西理工大学资源与环境工程学院,江西赣州341000 [2]江西省矿业工程重点实验室,江西赣州341000 [3]江西通安安全评价有限公司,江西赣州341000

出　　处：《有色金属（矿山部分）》2015年第1期69-73,82,共6页NONFERROUS METALS(Mining Section）

基　　金：国家自然科学基金(51464016);江西省自然科学基金项目(2009GZC0035);江西省教育厅资助项目(GJJ14421;GJJ09240)

摘　　要：依据气固两相流理论,以某金属矿掘进巷道内前压后抽混合式通风系统为研究对象,运用FLUENT软件对掘进巷道内爆破粉尘在混合式通风流场下的浓度分布进行数值模拟。通过改变混合式通风参数（压、抽风筒口与迎头面之间的距离、压抽风量配比）,在不同的通风工况下通风15min后,分析比较巷道内的粉尘浓度分布,从而确定混合式通风最佳的通风参数。研究结果表明,压抽风筒距离迎头面太近或太远都不利于通风排尘,对于该矿巷道,当压风筒出风口与迎头之距L压=8~10m,抽风筒吸风口与迎头之距L抽=30~35m,压抽风量配比为1∶1.3时,通风除尘效果较好。Based on the Computational Fluid Dynamics of gas-solid two-phase flow theory,and taken combined ventilation systems in excavation roadway as research objects,the concentration distribution of heading face dust in the combined ventilation system is simulated by using FLUENT software.By changing the distance between compressed-air tube or exhaust-air tube and working face or compressed and exhaust air volume ratio,the dust concentration distribution in different case is analyzed,and the optimal ventilation parameters are obtained.The results indicate that it is not conducive to the ventilation and dust exhaust if arrange the pressure ventilation tubes too closely or too far from the working face.For the excavation roadway model established in this paper,when the outlet of the compressed-air tube is 8~10mfrom working face,and the outlet of the exhaust-air tube is 30~35mfrom the working face,ventilation and dust exhaust works best.

关 键 词：混合式通风 粉尘浓度分布 风筒合理位置 压抽风量配比 数值模拟 

分 类 号：TD72[矿业工程—矿井通风与安全]