深部矿井高温采煤工作面热源及温度场演化规律分析  

Analysis of heat source and evolution law of temperature field in high temperature coal mining face of deep mines

作　　者：李延河 赵万里[2] 于振子 万志军[3] 张源[3] 师鹏 LI Yanhe;ZHAO Wanli;YU Zhenzi;WAN Zhijun;ZHANG Yuan;SHI Peng(China Pingmei Shenma Holding Group Co.,LTD.,Pingdingshan,Henan 467000,China;Institute of Coal Mining and Utilization,Pingdingshan Tianan Coal Mining Co.,LTD.,Pingdingshan,Henan 467000,China;School of Mines,China University of Mining and Technology,Xuzhou,Jiangsu 221116,China)

机构地区：[1]中国平煤神马控股集团有限公司,河南省平顶山市467000 [2]平顶山天安煤业股份有限公司煤炭开采利用研究院,河南省平顶山市467000 [3]中国矿业大学矿业工程学院,江苏省徐州市221116

出　　处：《中国煤炭》2024年第5期59-67,共9页China Coal

摘　　要：深部矿井开采面临严重的热害问题,其成因复杂且防治难度大。研究高温采煤工作面热源及温度场演化规律对深部矿井热害防治具有重要意义。以平煤股份十矿为工程背景,对己_(17)-24090采煤工作面风流热力参数进行现场调研,分析了工作面热源及其对井下温升的贡献度,并进一步建立采煤工作面温度场数值模型,明确了采煤工作面温度场演化规律。研究结果显示,引起井下温升的主要热源是围岩散热和机电设备散热,散热量分别占总热源散热量的28.2%和20.6%;地表大气对己_(17)-24090采煤工作面的温度场影响不大,风流在到达工作面之前已经趋于热力学稳定状态;在同一通风时间下,距离机巷口越远,温度越高;在距离相同时,随着通风时间的增加,温度上升幅度有所减缓。研究成果可为深部矿井热害治理工作及降温工程设计提供参考和理论依据。Deep coal mining faces serious thermal hazards,which are complicated in the causes and difficult to prevent and control,so it is of great significance to study the evolution law of temperature field and heat source in high temperature coal mining face for the prevention and control of thermal hazards in deep mines.Taking No.10 Mine of Pingdingshan Tianan Coal Mining Co.,Ltd.as the engineering background,an on-site investigation was conducted on the thermal parameters of wind flow in Ji 17-24090 coal mining face,the heat sources in the face and their contribution to the underground temperature rise was analyzed,and the numerical model of the temperature field in the coal mining face was further established to clarify the evolution law of the temperature field in the coal mining face.The results show that the main heat sources causing the underground temperature rise are heat dissipation from surrounding rock and electromechanical equipment,which account for 28.2%and 20.6%of the total heat dissipation from the heat sources,respectively;the earth's surface atmosphere has little effect on the temperature field of the Ji 17-24090 coal mining face,and the airflow has already reached a thermodynamically stable state before reaching the mining face;at the same ventilation time,the farther away from the entrance of the conveyor roadway,the higher the temperature;when the distance is the same,the temperature rise slows down as the ventilation time increases.The research results can provide reference and theoretical basis for the treatment of thermal damage and the design of cooling engineering in deep mines.

关 键 词：深部矿井 采煤工作面 热源 温度场 数值模拟 

分 类 号：TD727[矿业工程—矿井通风与安全]