掘进巷道通风降温试验及数值模拟研究  

Ventilation and Cooling Test and Numerical Simulation in Excavation Roadway

作　　者：张瑞明[1] 魏丁一 杜翠凤 张宏光[4] ZHANG Ruiming;WEI Dingyi;DU Cuifeng;ZHANG Hongguang(Shanxi Engineering Vocational College,Taiyuan 030009)

机构地区：[1]山西工程职业技术学院,太原030009 [2]金属矿山高效开采与安全教育部重点试验室,北京100083 [3]北京科技大学土木与资源工程学院,北京100083 [4]马钢(集团)控股有限公司南山矿业公司,安徽马鞍山243000

出　　处：《工业安全与环保》2019年第9期51-54,共4页Industrial Safety and Environmental Protection

基　　金：国家自然科学基金(51274023)

摘　　要：通过对夏甸金矿-652 m水平掘进巷道进行通风降温试验,运用Comsol对试验巷道进行模拟,研究通风过程中掘进巷道内速度与温度的变化规律。研究结果表明,局部通风在30 min内即可达到较好的降温效果。通风前巷内气温超过28℃且分布紊乱,通风后巷内气温降至28℃以下,巷内流场和温度场也变稳定了;Comsol模拟局部通风时,掘进巷内距掌子面越近,温度越低,风速越高,降温效果越明显;受岩壁热交换及摩擦阻力的影响,同一巷道断面温度呈四周高中间低分布,风速呈四周低中间高分布。对比模拟与实测验证了Comsol模拟结果的准确性,为通风降温现场实际应用提供依据。Through the ventilation and cooling test of the-652 m excavation roadway in Xiadian Gold Mine,and using Comsol to simulate the excavation roadway,the changes of velocity and temperature in the excavation roadway during the ventilation process were studied.The research results showed that local ventilation can achieve better cooling effect within 30 minutes.The temperature in the excavation roadway exceeded 28℃and the distribution was disordered before the ventilation.After the ventilation,the temperature in the excavation roadway dropped below 28℃,and the flow field and temperature field in the excavation roadway became stable.When using Comsol software to simulate the local ventilation,the closer to the face of the excavation roadway,the lower the temperature,the higher the wind speed and the more obvious the cooling effect;affected by heat exchange and frictional resistance of the rock wall,the temperature distribution of the section in the same excavation roadway were high in the periphery and low in the middle,and the wind speed were low in the periphery and high in the middle.Compared numerical simulation with field test results,it verified the accuracy and reliability of the Comsol simulation and provided a basis for practical application of ventilation and cooling.

关 键 词：掘进巷道 通风降温 现场试验 数值模拟 风温 风速 

分 类 号：TD3[矿业工程—矿井建设]