降低矿井通风网络系统总阻力的技术研究

Study of Technology of Reducing Wind-blow Resistance in Coalmines

随着矿井机械化水平的提高,生产能力的扩大,生产水平的下移,矿井深度将逐渐增大,深矿井和高温热害矿井不断增多,矿井需风量大幅度增加,通风总阻力急剧上升,有效风量率却逐渐降低,能耗增大,通风难度越来越大,现有的通风网络系统已越来越难以适应生产发展的需要。通过对矿井通风网络系统中最大阻力路线上的阻力分布状态及其总风阻和通风阻力进行了研究、分析和计算,找出影响矿井通风网络系统总风阻和通风阻力的关键因素,从技术上提出了相应的解决方法。

With mechanization advancing, production capability improving and mining bottom deepening, the number of deep mines and high - temperature mines has been increasing. Therefore, the demand of new technology of reducing wind -blow resistance rises, which satisfies the higher requirements of aeration quantity, lower wind resistance and energy consumption, as well as higher wind -blow rate. Based on this study, this paper analyzes the resistance distribution on the maximum resistant line in the ventilation network, calculates the total blow resistance and wind -blow resistance, finds out their determinants and works out their corresponding solutions.