煤矿安全2017，Vol.48Issue(3)：167-170,174,5.DOI:10.13347/j.cnki.mkaq.2017.03.045
渗流作用下陷落柱温度场分布特征数值模拟
Numerical Modeling of Distribution Characteristics for Collapse Column Temperature Field Under the Action of Seepage
摘要
Abstract
To reveal the distribution characteristics of temperature field in collapse columns under the action of seepage,a coupled seepage-temperature mathemnatical model is established based on porous media seepage of rock mass and heat transfer theory.The space distribution characteristics of seepage velocity and temperature field in the collapse columns were investigated under different permeability by taking II51 collapse column as model and Ordovician limestone aquifer as heat resource.The research resuhs indicate that the increasing permeability increases the groundwater seepage velocity,and then extends the relative high-temperature area.The seepage effect on the temperature distribution is clearer in the vertical direction than that in horizontal direction,and the temperature gradient in the collapse column is lower than that in the surrounding rock.The temperature of the surrounding rock is higher when it is closer to the collapse column.Temperature difference reaches 2 ℃ to 8 ℃ when it is in the range of 50 m away from collapse column.So it is feasible to predict collapse columns by temperature detection.关键词
陷落柱/渗流速度/温度场/渗透率/数值模拟/预测Key words
collapse column/seepage velocity/temperature field/permeability/numerical simulation/prediction分类
矿业与冶金引用本文复制引用
王飞,杨俊,苗博..渗流作用下陷落柱温度场分布特征数值模拟[J].煤矿安全,2017,48(3):167-170,174,5.基金项目
国家重点基础研究发展计划(973计划)资助项目(2013CB227903) （973计划）
国家自然科学基金资助项目(41472268,51374203) （41472268,51374203）
