巷道围岩调热圈半径及温度场分布规律研究

巷道围岩散热是一个复杂的非稳态过程,包括围岩内部的热传导和围岩与巷道风流的热交换。随着矿井开采深度的增加,巷道围岩与空气热交换所占比重增大。研究围岩与空气热交换规律对井下风流温度预测及制定矿井降温措施有着重要的意义。利用数值模拟软件模拟了淮南某矿-965 m轨道大巷不同通风时间围岩的温度场,研究了通风时间对巷道围岩温度的影响,并用实测数据对模型进行了分析验证。

Study on Cooled Zone Radius and Temperature Distribution Law of Surrounding Rock

The heat dissipation from rock is a complex unsteady process,including thermal conduction of the internal surrounding rock and heat exchange of surrounding rock and airflow.With the increase of mining depth,the proportion of heat exchange between surrounding rock and airflow increases.It is significant to study the heat exchange law of surrounding rock and airflow for underground mine airflow temperature forecast and mine cooling measures formulating.Temperature field of surrounding rock in different ventilation time is simulated in-965 m orbital alley of one coal mine of Huainan by numerical simulation software,the influence of ventilation time to temperature of surrounding rock is studied,and the mathematical model is verified by the data practically measured.