高温深井矿山独头掘进巷道通风降温机理研究  

Numerical Simulation Study on Ventilation and Cooling of Deep Mine Tunnels

作　　者：李晓健 贾敏涛 赵旭 李卫国 张明峰 LI Xiaojian;JIA Mintao;ZHAO Xu;LI Weiguo;ZHANG Mingfeng(Sinosteel Maanshan General Institute of Mining Research Co.,Ltd.,Maanshan 243000,China;School of Resources and Safety Engineering,Central South University,Changsha 410083,China;Hainan Shanjin Mining Co.,Ltd.,Ledong 572533,China;State Key Laboratory for Safety and Health of Metal Mines,Maanshan 243000,China)

机构地区：[1]中钢集团马鞍山矿山研究总院股份有限公司,安徽马鞍山243000 [2]中南大学资源与安全工程学院,湖南长沙410083 [3]海南山金矿业有限公司,海南乐东572533 [4]金属矿山安全与健康国家重点实验室,安徽马鞍山243000

出　　处：《金属矿山》2024年第2期271-275,共5页Metal Mine

基　　金：“十四五”国家重点研发计划项目(编号:2022YFC2904100)。

摘　　要：针对高温深井矿山独头掘进作业温度高、通风难等问题,以海南山金抱伦金矿为原型,基于气固两相流理论,采用三维流体仿真软件模拟深井井下高温环境,根据不同通风参数下主运巷及独头巷道的温度场、速度场分布特征,研究风温、风速及岩温等对气流分布、温度分布特征影响规律。结果表明:独头巷道有效通风临界距离为7 m,巷道交接处会产生“8”字型涡流,涡流交错处断面平均温度达到最低值,超过7 m,需要采取局部通风措施改善作业环境;采用制冷设备进行降温时,制冷装置距离掘进作业点距离小于30 m,入口通风温度为20~25℃时较为适宜;对于高热巷道围岩覆盖一定厚度的保温材料,减少岩壁向气流中散热,可以有效降低巷道空气温度。研究结论可为高温深井矿山通风系统设计、局部制冷降温设计提供理论支撑。Aiming at the problems such as high temperature and difficult air supply in single-head excavation in high-temperature deep mine,based on gas-solid two-phase flow theory,three-dimensional fluid simulation software was adopted to simulate the high-temperature environment in deep well.According to the distribution characteristics of temperature field and velocity field in main transportation roadway and single-head roadway under different ventilation parameters,the influence law of wind temperature,wind speed and rock temperature on the distribution characteristics of air flow and temperature distribution was studied.The results show that the critical distance for effective ventilation of single-ended roadway is 7 m,and"8"shaped eddy current will be generated at the intersection of roadway,and the average temperature at the cross section of eddy current reaches the lowest value,exceeding 7 m,and local ventilation measures should be taken to improve the working environment.When refrigeration equipment is used for cooling,the distance between the refrigeration device and the driving operation point is less than 30 m,and the inlet air supply temperature is 20℃to 25℃.For the thermal insulation material covering a certain thickness of the surrounding rock of the high-heat roadway,the heat dissipation of the rock wall to the air flow can be reduced effectively.The research results can provide powerful theoretical support for the design of ventilation system and local cooling and cooling in high temperature deep mine.

关 键 词：高温深井 通风降温 局部通风 独头掘进 

分 类 号：TD724[矿业工程—矿井通风与安全]