长江科学院院报 ›› 2012, Vol. 29 ›› Issue (1): 20-29.

• 水资源与环境 • 上一篇    下一篇

河道低温水对地表水地下水交错带温度的影响

杨勇12, 赵坚1, 陈孝兵1, 沈振中1   

  1. 1.河海大学 水利水电学院,南京210098; 2.河北省水利水电第二勘测设计研究院 规划处,石家庄050021
  • 收稿日期:2010-12-23 出版日期:2012-01-01 发布日期:2012-01-10
  • 作者简介:杨勇(1984-),男,江苏射阳人,硕士,主要从事工程渗流及其优化控制、地下水环境数值模拟等方面的研究,

Impact of Cold Water in the Channel  on the Temperature ofGroundwater-Surface Water Ecotone

YANG Yong 1,2, ZHAO Jian 1, CHEN Xiao-bing 1, SHEN Zhen-zhong 1   

  1. 1.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing210098, China; 2.The Second Design and Research Institute of Water Conservancy and Hydropower of Hebei Province,Shijiazhuang050021, China
  • Received:2010-12-23 Online:2012-01-01 Published:2012-01-10

摘要: 利用饱和多孔介质水热耦合运移数学模型,分析了流入河道的水库下泄低温水水位和水温对地表水地下水交错带温度场的影响规律。研究表明:在低温水下渗过程中,水热运移以热对流作用占主导,热传导、热弥散等作用较弱;河道水位升降明显决定着受影响的温度场区域范围大小;河道水温高低主要影响温度场各点温度的变化幅度。

关键词: 水热耦合运移, 低温水, 交错带, 数值模拟

Abstract: The  influences of the level and the temperature of cold water in the channel released from reservoir on the temperature field of groundwater-surface water ecotone  is analyzed with mathematical models of coupled water and heat transfer in saturated porous media. The research shows that compared with thermal conduction and thermal blooming, the thermal convection plays a leading role in the transfer of underground water and heat during cold water infiltration. Water level in the channel determines the extent of the temperature field being affected, and water temperature mainly affects the  temperature variation  at each point in the temperature field.

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