采煤工作面进风顺槽空冷器的位置布置优化

摘要

为治理井下热害,以采煤工作面进风顺槽内布置两台空冷器为例,系统分析了进风顺槽内风流、风筒内风流以及围岩散热三者之间的热湿交换关系,构建了采煤工作面进风顺槽风温预测数学模型.采用有限差分法的原理和方法对数学模型进行了离散分析,并运用MATLAB软件编制程序对数学模型进行数值求解,得到采煤工作面进风顺槽内以及风筒内的风流温度计算结果.该计算方法可以为研究采煤工作面进风顺槽风筒内的风温变化规律和优化空冷器位置布置提供可靠的依据.%This paper features a mathematical model for controlling underground heat harm-a model for predicting the air temperature for coal face intake alley developed by the efforts to systematically analyze the heat and moisture exchange relationship between the surrounding rock heat dissipation,air current in intake alley and air current in hair dryer,as is evidenced by the arrangement of two air coolers in coal face intake alley.This model is validated by both the discrete analysis building on the principle and approach of the finite difference method and numerical solution drawing on the MATLAB software programming,together with the calculation of air temperature for the inside of coal face intake alley and hair dryer.The proposed method may provide a reliable basis for both a better insight into the law behind the air temperature in the air dryers in coal face intake alley and an optimal arrangement of air coolers.