矿井围岩温度场分布规律
Distribution Laws of Temperature Field in Mine Surrounding Rock
-
摘要: 应用固体导热的理论，忽略一些次要因素的影响得到矿井围岩传热的数学模型。应用COMSOL Multiphysics模拟软件，计算得到矿井围岩温度场的分布规律，讨论了矿井通风时间、围岩导热系数、围岩径向位移、风流温度和原始岩温对矿井围岩温度场的影响。研究表明：影响围岩调热圈半径的主要因素是通风时间和围岩的导热系数。围岩调热圈半径随通风时间的增加及围岩导热系数的增加而增加。影响围岩温度梯度的主要因素是通风时间、风流温度和原始岩温。围岩温度梯度随通风时间的减少、风流温度的减小和原始岩温的增加而增加。Abstract: Based on the theory of solid heat conduction, the mathematical model of heat transfer in the surrounding rock of a mine was built by neglecting the influence of some minor factors. Using COMSOL multiphysics simulation software, the temperature field distribution of surrounding rock of a mine was obtained. Furthermore, the influence of ventilation time, thermal conductivity coefficient of surrounding rock, radial displacement of surrounding rock, air temperature and original rock temperature on mine temperature field were discussed. The study finds that the radius of heat-regulating circle is mainly determined by ventilation time and thermal conductivity coefficient of surrounding rock. The radius of heat-regulating circle increases with the increasing of ventilation time and thermal conductivity coefficient. The temperature gradient of surrounding rock is mainly determined by ventilation time, air temperature and original rock temperature. The temperature gradient of surrounding rock increases with the decreasing of ventilation time and air temperature and the increasing of original rock temperature.
-
-
[1] Lowndes I S， Yang Z Y， Jobing S， et al. A parametric analysis of a tunnel climatic prediction and plannlingmodes[J]. Tunnelling and Underground Space Technology，2006，21（5）：520-532. [2] 樊小利，张学博.围岩温度场及调热圈半径的半显式差分法解算[J].煤炭工程，2011（7）：82-84. [3] 秦跃平，王健，郝永江，等.基于有限体积法的巷道围岩散热无因次分析[J].矿冶工程，2013，33（3）：5-7. [4] 吴强，秦跃平.巷道围岩非稳态温度场有限元分析[J].辽宁工程技术大学学报（自然科学版），2002，21（5）：604-607. [5] 黎明镜.深井巷道围岩温度场分布规律研究[J].山西建筑，2010，36（12）：89-90. [6] 孙德兴.高等传热学—导热与对流的数理解析[M].北京：中国建筑工业出版社，2005：143-144. [7] 杨世铭，陶文铨.传热学[M].4版.北京：高等教育出版社，2011. [8] 高建良，杨明.巷道围岩温度分布及调热圈半径的影响因素分析[J].中国安全科学学报，2005，15（2）：73.
计量
- 文章访问数: 378
- HTML全文浏览量: 0
- PDF下载量: 0
下载:
