潮湿巷道围岩散热影响因素的数值分析  

Numerical Analysis of Surrounding Rock Heat Radiation Influence Factors of Mine Wet and Moisture Roadway

作　　者：时岚[1] 张学博[2] 

机构地区：[1]河南神火煤电股份有限公司,河南永城476600 [2]河南理工大学安全科学与工程学院,河南焦作454003

出　　处：《煤炭科学技术》2009年第9期51-53,共3页Coal Science and Technology

摘　　要：为了研究潮湿巷道围岩散热影响因素,对矿井风流与围岩热湿交换理论进行了研究,提出了理论上更可靠的潮湿巷道围岩散热计算方法,采用有限差分法进行了数值解算,编制了模拟解算矿井风流与围岩热湿交换的计算机程序,得到了潮湿巷道围岩散热的变化规律,分析了通风时间、湿度系数等参数对围岩散热变化规律的影响。研究表明:显热、潜热及总散热量都随着通风时间的增长而减少,减少幅度逐渐降低;潮湿巷道壁面湿度系数对围岩散热量的影响较大,从潮湿巷道围岩表面散发的显热随着壁面湿度系数的增大而降低,而潜热和总散热量则随着壁面湿度系数的增大而增大。In order to study the surrounding rock heat radiation influence factors of mine wet and moisture roadway, a study was conducted on the exchange theory of the mine air flow and the surrounding rock heat moisture and the paper provided the calculation method of the mine wet and moisture roadway which was the more reliable method in the theory. The finite difference method was applied to the numerical calculation and to the preparation of the mine air flow simulation calculation and the computer program of the surrounding rock heat and moisture exchange. A variation law of the heat released from the surrounding rock of the wet and moisture roadway was obtained. The pa- per analyzed the ventilation time, the moisture coefficient and other parameters affected to the variation law of the heat released from the surrounding rocks. The study showed that the apparent heat, the latent heat and the total heat radiating value would be reduced with the ventilation time increased and the reduction value would be steadily decreasing. The sidewall surface moisture coefficient of the wet and moisture roadway would have a high influence to the heat radiation of the surrounding rocks. The apparent heat from the surrounding rock surface of the wet and moisture roadway would be reduced with the wall surface moisture coefficient increased, but the latent heat and the total heat radiation value would be increased with the wall surface moisture coefficient increased.

关 键 词：湿度系数 围岩温度 水分蒸发 围岩散热 含湿量 

分 类 号：TD727[矿业工程—矿井通风与安全]