基于空气状态参数与风量耦合迭代的风网解算方法

Ventilation network solution method based on coupling iteration of air state parameters and air quantity

矿井通风网络是一个复杂动态非线性系统,受地面空气状态参数和井下热湿源以及采矿活动的影响,井下风流状态参数将随时间发生变化.因此,必须对矿井通风网络进行实时解算和日常维护调控.根据风流与井巷围岩之间不稳定对流换热、井巷围岩氧化放热和热水沟散热等模型,结合节点风量平衡方程、回路风压平衡方程和多股风流混合的热湿平衡方程,提出基于空气状态参数与风量耦合迭代的通风网络风量调控决策的方法,编制了计算机程序.举例计算结果表明:在一定条件下空气状态参数随风量调控的变化而变化,并获得风量调控方案,为矿井通风网络实时解算和风量调控决策提供一种技术手段.

Mine ventilation network is a complex dynamic nonlinear system.Affected by the surface air state parameters,underground heat and humidity sources and mining activities,the underground air flow state parameters will change with time.Therefore,it is necessary to carry out real-time calculation and daily maintenance of mine ventilation network.According to the unsteady convective heat transfer model between the air flow and the surrounding rock of the roadway,oxidation heat release model and hot water ditch heat dissipation model,combined with node air flow balance equation,circuit air pressure balance equation,heat and moisture balance equation of multi air flow mixing,the ventilation network air quantity control decision-making method based on the coupling iteration between the air state parameters and the air quantity was proposed,its computer program was compiled.The results of an example calculation show that under certain conditions,the air state parameters change with the change of air quantity regulation,and the air quantity regulation scheme is obtained,which provides a technical means for real-time calculation of mine ventilation network and decision-making of air quantity regulation.