掘进巷道回头热及其影响因素分析研究  

Analysis of Roadway Back Hot and Its Influencing Factors

作　　者：刘桂平 LIU Guiping(State Key Laboratory of Exploitation and Comprehensive Utilization of Coking Coal Resources,Pingmei Shenma Group,Pingdingshan 467000,China)

机构地区：[1]中国平煤神马集团炼焦煤资源开发及综合利用国家重点实验室,河南平顶山467000

出　　处：《矿业安全与环保》2018年第6期10-14,共5页Mining Safety & Environmental Protection

摘　　要：在现场实验研究掘进巷道温度场的基础上,基于巷道围岩散热沿长度方向的变化情况建立数学模型进行数值模拟,得出巷道温度场及回头热分布规律。分析了掘进巷道回头热现象出现的原因及其影响因素,研究了入风温度、风量及风筒位置对回头热的影响。研究结果表明:入风温度越高,回头热温度越高、位置越靠近工作面;风量越大,回头热温度越低、位置距离工作面越远;风筒出口距离工作面越近,回头热温度越高、位置越靠近工作面。可为选择合理的掘进巷道降温方式及优化降温系统提供参考。On the basis of the field experimental study of temperature field in tunneling roadway,a mathematical model,which based on the variation of the heat dissipation along the length direction of the roadway surrounding rock,was established to numerical simulation,the distribution law of back hot and temperature field in roadway was obtained.This paper analyzed the reason and its influencing factors of back hot in tunneling roadway,and studied the influence of inlet air temperature,air volume and the position of ventilation on back hot.The results show that the higher the air inlet temperature,the higher the back hot temperature,and the closer the position to the working face;the higher the air volume,the lower the back hot temperature,and the farther the position to the working face;the closer the ventilation outlet to the working face,the higher the back hot temperature,and the closer the position to the working face.It can provide reference for selecting reasonable tunneling roadway cooling method and optimizing cooling system.

关 键 词：矿井热害 回头热 掘进巷道 数值模拟 影响因素 

分 类 号：TD727[矿业工程—矿井通风与安全]