掘进巷道通风降温的数值模拟及影响因素分析

选取夏甸金矿-682 m水平38#掘进巷道为研究对象，进行通风降温试验测定，并用Fluent软件对试验条件下掘进巷道的风流速度场和温度场分布进行数值模拟计算，验证了该模拟方法的可靠性。研究不同因素对巷道降温效果的影响，初步得出了井下掘进巷道风流温度与风量、入风温度以及岩壁温度的变化规律。掘进巷道通风降温影响因素的排序为入风温度>岩壁温度>风量。入风温度和岩壁温度的升高均会导致与巷道风流温度线性升高。通过增加风量来降低风流温度是有效的，但随着风量的增加，其降温效果会越来越不明显。

Numerical Simulation of Ventilation and Cooling in Excavation Roadway and Analysis of Influencing Factors

The ventilation cooling experiment was conducted in Xiadian Gold mine's No.38 excavation roadway at underground -682 m.Fluent software was used to simulate the numerical statistics of tunneling velocity and temperature distribution under the experimental conditions to validate the reliability of the method.The influence of various factors on the ventilation cooling process is studied.A changing rule of airflow temperature with air volume，air inlet temperature and wall temperature in the excavation roadway is derived and the influence factors are listed as air inlet temperature，wall temperature and air volume in descending order.The airflow temperature in excavation roadway increases linearly as the air inlet temperature or the wall temperature increases.It is an available measure to bring down airflow temperature by increasing air volume，but the cooling effect weakens as air volume increases.