巷道围岩渗流与传热耦合数值模拟研究

发布时间：2018-05-19 07:07

本文选题：矿井围岩 + 渗流　；参考：《矿业研究与开发》2017年08期

【摘要】：为了得到具有地下水渗流的矿井围岩内部传热规律,基于等效连续介质渗流模型,建立矿井巷道裂隙密集性围岩渗流和传热耦合模型,应用COMSOL Multiphysics有限元分析软件,实现了矿井巷道裂隙围岩温度场的分布模拟,并分析了矿井通风时间、围岩孔隙率、围岩渗透率、固体导热系数、围岩初温和通风温度对温度场分布的影响。结果表明:通风时间增加会使得调热圈半径增大;在孔隙率较大时,孔隙率越大越有利于换热,孔隙率较小时,孔隙率越小越有利于换热;渗透率越大、固体导热系数越大和通风温度越低越有利于换热。固体导热系数、原始岩温及通风温度对围岩调热圈半径影响不明显。
[Abstract]:In order to obtain the heat transfer law in surrounding rock of mine with groundwater seepage, based on the equivalent continuous medium seepage model, the coupling model of seepage and heat transfer of surrounding rock mass with dense fissure in mine roadway is established, and the finite element analysis software COMSOL Multiphysics is used. The distribution simulation of surrounding rock temperature field of mine roadway fissure is realized, and the effects of ventilation time, surrounding rock porosity, surrounding rock permeability, solid thermal conductivity, initial surrounding rock temperature and ventilation temperature on the temperature field distribution are analyzed. The results show that the radius of the heat regulating circle increases with the increase of ventilation time, the larger the porosity is, the more favorable the heat transfer is, the smaller the porosity is, the more favorable the heat transfer is, the greater the permeability, the smaller the porosity, the more favorable the heat transfer is. The larger the solid thermal conductivity and the lower the ventilation temperature, the better the heat transfer. The influence of solid thermal conductivity, original rock temperature and ventilation temperature on the radius of surrounding rock heat regulating circle is not obvious.
【作者单位】：西安科技大学能源学院;
【基金】：国家自然科学基金项目(51404191)
【分类号】：TD727.2

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