某铁矿通风系统全方位优化实践

Comprehensive Optimization Practice of Ventilation System in an Iron Mine

现有某铁矿通风系统存在风量分配不合理、通风工程欠缺、井下风流紊乱、风机选型不合理和机站能源浪费等问题,从矿井总风量的重新计算核定、通风方式优化、机站设置合理性评估、通风构筑物设置以及风机选型5个方面对通风系统进行优化。优化方案实施后,经过现场对风量以及风机工况的检测得出:该矿通风系统总风量达到230.97 m^(3)/s,各中段供风量均满足实际需求;机站装机功率为768.45 kW,风机平均效率为80.61%。优化改造后,矿山通风系统的可靠性得到了大幅提高,对深部矿山开采通风系统优化研究有着重要的借鉴意义。

The existing ventilation system of an iron mine has problems such as unreasonable air volume distribution,lack of ventilation engineering,underground air flow disorder,unreasonable fan selection and energy waste of the station.The ventilation system is optimized from five aspects:recalculation and verification of the total air volume of the mine,optimization of ventilation mode,rationality evaluation of the station setting,ventilation structure setting and fan selection.After the implementation of the optimization scheme,through the field detection of air volume and fan working conditions,it is concluded that the total air volume of the mine ventilation system reaches 230.97 m^(3)/s,and the air supply volume of each middle section meets the actual demand.The installed power of the station is 768.45 kW,and the average efficiency of the fan is 80.61%.After optimization,the reliability of mine ventilation system has been greatly improved,which has important reference significance for the optimization of ventilation system in deep mining.