高温矿井巷道风流温度预测方法研究  

Study on prediction method of airflow temperature in high temperature mine roadway

作　　者：杨威[1] 刘何清[1,2] 何昌富[1] 熊慧灵 李伊洁 

机构地区：[1]湖南科技大学能源与安全工程学院,湖南湘潭411201 [2]湖南科技大学煤矿安全开采技术湖南省重点实验室,湖南湘潭411201

出　　处：《中国安全生产科学技术》2014年第9期101-106,共6页Journal of Safety Science and Technology

基　　金：国家自然科学基金项目(51074072;51134005);湖南省科技计划项目(2012FJ2001)

摘　　要：根据高温矿井巷道与风流间热湿交换特点,提出了"巷道空间水分蒸发需热量等于巷道出口风流理论温度与实际温度之差的显热交换量"的观点;提出了"将饱和水蒸气分压力分区线性化"及"先简化、后误差修正"的数学变换思路,将巷道始末风流潜热交换量表示成巷道出口风流温度的一次函数,并得到了预测矿井巷道出口风流温度的数学模型;叙述了预测矿井巷道末端风流温度的详细计算步骤,并分析了各参数取值方法。通过与其他资料计算实例的对比分析,证明了新提出的矿井巷道风流温度计算法具有计算精度更高、可信度更高的优点。According to the heat and moisture transfer characteristics between airflow and roadway in high temperature mine, a view, that the heat requirement for water evaporation in tunnel was equal to the exchange quantity of apparent heat, was put forward. And the exchange quantity of apparent heat was expressed by the difference between theoretical airflow temperature and actual airflow temperature at the end of roadway. Then, the concept of a mathematical transformation method, that the saturated water vapor pressure was fitted by a piecewise linear method, was proposed. The quantity of latent heat exchange the end of roadway. And the formula for calculating was expressed by linear function of airflow temperature at airflow temperature in exit region of roadway was deduced. In order to reduce simplified error, a method of error correction after simplification was proposed. So, a new prediction model was obtained. Furthermore, the solving steps and calculating methods for some parameters of this method were introduced. In the end, by comparing with some calculation examples in other materials, it showed that this method had higher calculation accuracy and higher reliability. It also can be seen that the above research helps to provide a theoretical guide for design of cooling system in high temperature mine.

关 键 词：矿井巷道 风流温度 计算方法 理论温度 潜热交换量 

分 类 号：X936[环境科学与工程—安全科学]