矿井巷道淋湿蒸发换热系数构建及风流温度计算
发布时间：2018-12-09 13:03
【摘要】：针对全矿井网域系统巷道围岩与风流热-湿交换计算复杂的问题,提出构建淋湿巷道风流换热系数模型,根据现场实测风流相对湿度,掌握矿井(进风侧)风流湿度变化规律,反向推演确定井巷水蒸发影响下风流与巷道围岩热交换的模型,修正围岩与风流的换热系数;用风量加权距离描述实际矿井网域风流相对湿度变化规律。结合九道岭矿实例,将算法纳入到矿井网络系统中,在MATLAB平台上运用TF1M3D对全矿井网域系统风流温度进行仿真求解。研究表明,巷道淋水蒸发吸热对井巷风流温度影响很大,主进风井段风流温度增加0.97℃,变化幅度不大,随着湿度增大风流温度递增变化幅度增大,与九道岭矿进风大巷测定结果吻合。将该算法纳入网络体系计算中,可解决3D矿井模型通风系统热害防治温度分布仿真及自然风压自动计算问题。
[Abstract]:In view of the complex calculation of heat and moisture exchange between surrounding rock and air flow of roadway in the whole mine network system, a model of heat transfer coefficient of air flow in wet roadway is proposed. According to the field measured relative humidity of air flow, the variation law of air flow humidity in mine (inlet side) is grasped. The model of heat exchange between air flow and roadway surrounding rock under the influence of water evaporation is determined, and the heat transfer coefficient of surrounding rock and wind flow is corrected. The change law of relative humidity of air flow in actual mine space is described by weighted air volume distance. Combined with the example of Jiudaoling Mine, the algorithm is integrated into the mine network system, and TF1M3D is used to simulate the air flow temperature of the whole mine network area system on the MATLAB platform. The results show that the evaporation and heat absorption of dripping water has a great influence on the air flow temperature, and the air flow temperature in the main inlet air well increases by 0.97 鈩，
本文编号：2369401
[Abstract]:In view of the complex calculation of heat and moisture exchange between surrounding rock and air flow of roadway in the whole mine network system, a model of heat transfer coefficient of air flow in wet roadway is proposed. According to the field measured relative humidity of air flow, the variation law of air flow humidity in mine (inlet side) is grasped. The model of heat exchange between air flow and roadway surrounding rock under the influence of water evaporation is determined, and the heat transfer coefficient of surrounding rock and wind flow is corrected. The change law of relative humidity of air flow in actual mine space is described by weighted air volume distance. Combined with the example of Jiudaoling Mine, the algorithm is integrated into the mine network system, and TF1M3D is used to simulate the air flow temperature of the whole mine network area system on the MATLAB platform. The results show that the evaporation and heat absorption of dripping water has a great influence on the air flow temperature, and the air flow temperature in the main inlet air well increases by 0.97 鈩，
本文编号：2369401
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