高温采煤工作面全风流路径风温及冷负荷预测方法研究  

Prediction of airflow temperature and cold load of the whole wind flow path in high-temperature coal mining face

作　　者：李延河[1,2] 万志军 于振子[1,3] 师鹏 赵万里 甄正[2] 张源 LI Yanhe;WAN Zhijun;YU Zhenzi;SHI Peng;ZHAO Wanli;ZHEN Zheng;ZHANG Yuan(Pingdingshan Tian'an Coal Industry Co.,Ltd.,Pingdingshan 467009,China;School of Mines,China University of Mining and Technology,Xuzhou 221116,China;State Key Laboratory of Coking Coal Exploitation and Comprehensive Utilization,Pingdingshan 467009,China)

机构地区：[1]平顶山天安煤业股份有限公司,河南平顶山467009 [2]中国矿业大学矿业工程学院,江苏徐州221116 [3]炼焦煤资源绿色开发全国重点实验室,河南平顶山467009

出　　处：《煤炭工程》2024年第11期171-175,共5页Coal Engineering

基　　金：国家自然科学基金项目(51674242,52074266)。

摘　　要：为改善井下工作环境,打破高温矿井逢夏停工停产的困境,以平煤股份十矿为工程背景,提出了基于全风流路径风温预测的采煤工作面冷负荷计算方法。建立了采煤工作面温度场数值模型,分析了入口风温与控温靶区温度值的依变关系;设置控温靶区目标温度值,并通过焓差法对制冷前后的采煤工作面冷负荷进行计算。研究结果表明,以采煤工作面上端头超前工作面50 m为控温靶区,入口温度与控温靶区温度的依变关系为:y=89.57-72.88×0.99^(x);降温前,入口风温为30℃,控温靶区温度为35.7℃。降温后,入口风温为13.6℃,控温靶区温度为26℃;降温前工作面入口风流焓值为85.53 kJ/kg,控温靶区风流焓值为128.88 kJ/kg;降温后工作面入口风流焓值为28.36 kJ/kg,控温靶区风流焓值为66.77 kJ/kg。工作面的冷负荷为2286.8 kW。制冷机组制冷量为2300 kW,机组运行后工作面温度平均降低7~10℃,湿度降低20%以上,降温除湿效果明显。In order to improve the underground working environment,and break the dilemma of high-temperature mines stopping work and production in summer,the cold load calculation method of coal mining face based on the prediction of the airflow temperature of the whole airflow path was proposed in the engineering background of the Pingmei No.10 Mine.A numerical model of the temperature field of the coal mining face was established,and the dependence of the inlet air temperature on the temperature value of the temperature control target area was analyzed;the target temperature value of the temperature control target area was set,and the cold load of the coal mining face before and after refrigeration was calculated by the enthalpy difference method.The results of the study show that the temperature control target area is 50 m ahead of the working face at the upper end of the coal mining face,and the dependence relationship between the inlet temperature and the target temperature of the temperature control target area is as follows:y=89.57-72.88×0.99^(x);the inlet air temperature is 30℃and the temperature of the target area of the temperature control area is 35.7℃before the cooling down.After cooling,the inlet air temperature is 13.6℃,and the temperature of the temperature control target area is 26℃;the enthalpy of the inlet airflow at the working surface before cooling is 85.53 kJ/kg,and the enthalpy of the airflow at the temperature control target area is 128.88 kJ/kg;after cooling,the enthalpy of the inlet airflow at the working surface is 28.36 kJ/kg,and the enthalpy of the airflow at the temperature control target area is 66.77 kJ/kg;the cold load of the working surface is 2286.8 kW.The cooling capacity of the refrigeration unit is 2300 kW,and the average temperature of the working surface is reduced by 7~10℃and humidity is reduced by more than 20%after the operation of the unit,the effect of cooling and dehumidifying is obvious.

关 键 词：深部矿井 高温采煤工作面 风温预测 冷负荷计算 

分 类 号：TD712[矿业工程—矿井通风与安全]