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渗流作用下陷落柱体围岩温度场分布模型的研究与应用

Study and Application of Temperature Distribution Field Model of Collapse Column Surrounding Rock under Action of Groundwater Seepage

  • 摘要: 陷落柱突水时,导致围岩温度升高,根据围岩温度场分布对矿井突水预测具有一定可行性。采用有限元软件COMSOL求解温度—渗流场耦合模型,得到7222工作面陷落柱突水后围岩温度场的分布情况,模拟结果与监测结果基本一致,说明通过监测含水构造的温度场分布情况来预测矿井突水的可能性。模拟结果表明,距离高温水流位置越近,则受到热交换平衡区的影响时间就越长,温度场的变化越显著。

     

    Abstract: The water inrush from the collapse column may lead to the temperature rise of its surrounding rock,so it has a certain feasibility to predict the mine water inrush according to the temperature field distribution of the surrounding rock.With the finite element software COMSOL solving temperature-seepage coupling model,the temperature field distribution of the surrounding rock of the collapse columm in 7222 working face after water inrush was got,the simulating and monitoring results were basically identical,this indicated that it was feasible to predict the possibility of mine water inrush by monitoring the temperature field distribution of the water-bearing structures.The simulating results showed that the closer the distance to the high-temperature water flow,the longer the affacting time by the heat balance area,and the more significant the change of the temperature field.

     

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