钾盐矿房柱法采场温湿度分布规律研究  

Research on the Distribution Law of Temperature and Humidity in the Room-and-pillar Method Stope of Potassium Salt Mine

作　　者：谭星宇 任高峰[1,2] 张露伟 江科 张聪瑞 王鑫[1,2] TAN Xing-yu;REN Gao-feng;ZHANG Lu-wei;JIANG Ke;ZHANG Cong-rui;WANG Xin(Key Laboratory of Green Utilization of Key Non-metallic Mineral Resources(Ministry of Education),Wuhan University of Technology,Wuhan 430070,China;School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan 430070,China;Changsha Mining Research Institute Co Ltd,Changsha 410012,China)

机构地区：[1]武汉理工大学关键非金属矿产资源绿色利用教育部重点实验室,武汉430070 [2]武汉理工大学资源与环境工程学院,武汉430070 [3]长沙矿山研究有限责任公司,长沙410012

出　　处：《武汉理工大学学报》2024年第9期109-117,共9页Journal of Wuhan University of Technology

基　　金：国家重点研发计划(2022YFC2904002);国家自然科学基金面上项目(52174087);关键非金属矿产资源绿色利用教育部重点实验室开放基金(KFJJ202303)。

摘　　要：建立了考虑围岩散热、机械设备散热和水分蒸发的对流耦合换热模型,以某钾盐矿房注法开采采场为例,建立几何模型,通过对比实测和数值模拟结果,验证了数值模拟的准确性。数值模拟结果揭示:采场温度和湿度沿采场长度方向整体上均为升高,温度由29.99℃升高至36.25℃,湿度由21.20 g/kg升高至26.84 g/kg,机械设备散热和围岩散热是引起风流温度升高的主要原因,其中机械设备散热是最主要的原因,壁面水分蒸发是风流湿度增大的原因;随采场开采的进行,采场断面增大,采场温度和湿度增大;采场X=10~90 m范围内底板附近温度和湿度低,靠近顶板附近温度和湿度高,顶底温差为1.97~3.47℃,顶底湿度差为3.12~6.77 g/kg,采场断面越大,顶底板的温湿差异越明显,底板附近是人员和设备活动频繁的区域,底板附近温度和湿度低,对于采场生产作业有利。This study established a coupled model of convection and heat transfer,considering factors such as heat dissipation from surrounding rock and mechanical equipment,as well as water evaporation.A geometric model is constructed based on a room-and-pillar method stope in a potassium salt mine.Verification of the numerical simulation accuracy is conducted through comparison with measured data.Numerical simulations indicate a consistent increase in temperature and humidity along the length of stope.The temperature rose from 29.99℃to 36.25℃,and the humidity increased from 21.20 g/kg to 26.84 g/kg.The heat dissipation of mechanical equipment and surrounding rock contribute significantly to rising airflow temperatures,with mechanical equipment being the primary driver.Water evaporation from the walls increases airflow humidity.Additionally,as the stope section grows during mining,both temperature and humidity rise.Notably,within the X=10~90 m range of the stope,humidity and temperature are lower near the bottom plate and higher near the top plate.The temperature difference between top and bottom plates is 1.97~3.47℃,and the humidity difference between these plates is 3.12~6.77 g/kg.The difference in temperature and humidity between the top plate and bottom plate becomes more pronounced with larger stope sections.Since the area near the top plate experiences frequent personnel and equipment activities,the lower temperature and humidity near the bottom plate benefit stope production.

关 键 词：房柱法采场 数值模拟 风流湿度 环境改善 

分 类 号：TD727[矿业工程—矿井通风与安全]