大湾煤矿通风系统特征及通风能力核定

选定矿井通风系统相对稳定的时期为核定时期，通过矿井需要风量计算，确定各采掘工作面、硐室及备用工作面的需风量；根据矿井通风能力计算，确定大湾煤矿合理的采掘比为1：4，矿井通风能力为130万t，矿井等积孔3．97m^2，矿井为通风容易矿井。并从矿井通风动力、用风地点有效风量、矿井通风网络能力、稀释瓦斯能力等方面验证了矿井通风能力为130万t。井下各用风地点风流稳定，风量、风速、风阻满足要求，矿井通风网络能力能够满足安全生产的要求。

Features of Ventilation System in Dawan Mine and Ventilation Capacity Approved

With the selected the relative stable period of the mine ventilation system as an approved period and with the calculation of the mine required ventilation,the required ventilation quantity of each mining and excavation working face,chamber and standby working face could be set up.According to the calculation of the mine ventilation capacity,the rational mining and excavation ratio of Dawan Mine was 1∶4,the mine ventilation capacity was 1.30 million tons,the mine equivalent hole was 3.97 m2 and the mine was a easy ventilation mine.From the mine ventilation dynamics,the effective ventilation quantity at the ventilation location,the mine ventilation network capacity,gas diluted capacity and other aspect,the mine ventilation capacity was verified as 1.30 million tons.At the each ventilation location,the air flow was stable and the ventilation quantity,air velocity and air resistance could meet the requirements.The mine ventilation network capacity could meet the requirements of the production and safety.