矿井风流温度计算及应用

发布时间：2018-04-09 17:39

本文选题：矿井热害　切入点：围岩散热　出处：《辽宁工程技术大学》2015年硕士论文

【摘要】：我国矿井开采深度的增加导致了矿井热害的严重问题。矿井热害产生原因有很多,其中围岩散热是导致矿井风流温度升高的主要原因之一,本文对矿井的产热量进行计算。将矿井分为三大部分：进风区、用风区和回风区,对井筒采用差分法进行风流温度计算。对其他不同类型的巷道采用不同的计算方法对温度进行计算。通过计算得到矿井风流温度的增加主要来源于围岩散热,而围岩散热分为显热交换与潜热交换,分别对巷道内显热交换和潜热交换进行了计算。本文特别针对巷道壁面在潮湿情况下的显热交换量和潜热交换量进行了计算,通过计算结果对显热交换量和潜热交换量之间的关系进行讨论分析,并对巷道风流温度的影响进行了分析。讨论了在巷道围岩湿度不同的巷道中显热和潜热之间的变化关系；得到了潜热交换量随着巷道围岩湿度的增加而增加。并且讨论了在湿度系数变化的过程中显热和潜热对风流温度影响的大小。
[Abstract]:The increase of mine mining depth in China has caused serious problems of mine thermal damage.There are many reasons for mine heat damage, among which the heat dissipation of surrounding rock is one of the main reasons leading to the increase of mine air flow temperature. The heat production of mine is calculated in this paper.The mine is divided into three parts: the air inlet area, the air area and the return air zone, and the air flow temperature of the shaft is calculated by using the difference method.Different calculation methods are used to calculate the temperature of other different types of roadways.The results show that the increase of air flow temperature mainly comes from the heat dissipation of surrounding rock, and the heat dissipation of surrounding rock is divided into explicit heat exchange and latent heat exchange. The explicit heat exchange and latent heat exchange in roadway are calculated respectively.In this paper, the explicit heat exchange amount and latent heat exchange amount on the wall of roadway under humid conditions are calculated, and the relationship between the apparent heat exchange amount and latent heat exchange amount is discussed and analyzed.The influence of air flow temperature on roadway is analyzed.The relationship between sensible heat and latent heat in roadway with different humidity of surrounding rock is discussed, and the amount of latent heat exchange increases with the increase of humidity of surrounding rock of roadway.The influence of sensible heat and latent heat on air flow temperature is discussed.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD727.2

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