热害矿井掘进工作面换热特性  

Heat transfer characteristics of driving face in heat harm mine

作　　者：姬建虎[1,2] 廖强[1] 胡千庭[2] 褚召祥[2] 张习军[2] 龚林平 

机构地区：[1]重庆大学工程热物理研究所,重庆400044 [2]中国煤炭科工集团重庆研究院瓦斯灾害监控与应急技术国家重点实验室,重庆400037

出　　处：《煤炭学报》2014年第4期692-698,共7页Journal of China Coal Society

基　　金："十二五"国家科技支撑计划资助项目(2012BAK04B02);中国煤炭科工集团创新基金重点资助项目(2011ZD001);重庆市科技人才培养计划资助项目(cstc2013kjrc-qnrc90001)

摘　　要：为量化热害矿井掘进工作面的换热特性,根据其通风和换热特点,以掘进工作面冲击射流换热系数的影响因素关联式为基础,结合工程实践中常见参数对换热系数影响因素进行了1∶1的ANSYS数值模拟试验和1∶3的室内相似模拟实验。结果表明:模拟和实验结果在数值范围和变化趋势两方面吻合程度都较高。对数值模拟和实验结果进行回归分析,得到了掘进工作面冲击射流换热系数影响因素关联式的具体形式。数值模拟和实验结果回归分析式的相关系数分别为0.925和0.944。In order to obtain the heat transfer equation of driving face in heat harm mine, according to the ventilation and heat transfer characteristics and general parameters in engineering practice of driving face in heat harm mine, the ratio of 1 ： 1 ANSYS numerical simulation test and ratio of 1 ： 3 indoor similar simulation experiment were taken based on the convective heat transfer coefficient impact factors correlation of jet flow in driving face. Through the com- parison, simulation and experiment results have high degree of coincidence both on range of value and variation tend- ency. Then the concrete forms of heat transfer coefficient correlation were got with regression analysis of numerical sim- ulation results and experimental results. The correlation index R2 of the numerical simulation and the experiment re- gression analysis are 0. 925 and 0. 944.

关 键 词：热害矿井 掘进工作面 换热系数 相似实验 回归分析 

分 类 号：TD727[矿业工程—矿井通风与安全]