井巷自然通风参数计算模型研究与应用

Study on Parameter Calculation Model for Natural Ventilation of Tunnel and Its Application

以巷道中空气流动体系的能量方程为基础,推导出井巷系统节点风温计算式。根据热压差形成矿井自然风流这一基本成因,将自然风压表达为节点风温的函数,并结合井巷通风网络解算法,建立了自然通风参数计算模型,编制了自然通风参数解算程序。通过对酒钢镜铁山矿Ⅱ矿体自然通风参数的计算,得出自然风量在1、7、8、12月达到高峰值,在4、10月处于低峰值。经与全年实测结果对比分析,得出其计算值与实测值基本吻合,从而证明了数学模型的合理性及应用的可行性。

Based on the energy equation of the aerial flowing system in the tunnel, the formula of the joint wind temperature of the ttmnnel system is deduced. According to the basic cause that difference of heat pressure forms the natural air flow, the natural ventilation pressure is expressed into the function of the joint wind temperature, and in combination with ventilation network solution method, the parameter calculation model for natural ventilation is set up and the calculating program is compiled. Through calculation on natural ventilation parameter for Jingtieshan Mine Ⅱ of Jiuquan Iron and Steel （Group） Co. ,Ltd. ,we know that the natural wind volme reaches high in January,July,August,and December and it reaches low in April and October and through comparative analysis on measuring results all year round, wo also know that the calculating results coincide with the me.asuring results,proving the rationality of the model and the feasibility of application.