摘要
通过建坝前后地温场的变化了解坝基渗流状态是渗流监测中的新手段。１９９２～１９９５年对丹江口大坝坝基温度场和库水温度进行了监测，同时对１９～３１号坝段坝基渗流进行了三维有限元模拟计算。监测和计算资料表明：等温线和等势线分布情况大体一致，均受建基面形状、岩石透水性及防渗处理效果的影响，坝基温度场受坝基渗流控制，温度场的变化规律反映坝基渗流的实际状态，从温度场分析坝基渗流是可行的。
Studying seepage state in dam foundation through th e variation of temperature field in the foundation before and after dam construct i on is a new means for seepage monitoring. From 1992 to 1995, temperature field i n the dam foundation and water temperature in the reservoir were monitored for D a njiangkou project, and in the meanwhile, 3 dimensional FEM seepage simulation comp utation for foundation of No.19～No.31 dam sections was made. The comparison ana lysis between monitoring data and computation results shows that distributi ons of isothermal lines and isopotential lines are about the same, and both infl u enced by the configuration of foundation base and water permeability of rock as well as seepage treatment effectiveness, the temperature field in the dam founda t ion is controlled by the seepage in it, the variation law of the temperature fie ld reflects the practical seepage state in dam foundation, and it is feasible to analyse the seepage in dam foundation through temperature field.
出处
《人民长江》
北大核心
1999年第5期21-23,共3页
Yangtze River
关键词
温度场
渗流分析
有限元法
观测资料
坝基渗流
Temperature field Seepage flow analysis Finite element method Systematization of observation data Danjiangkou Multipur pose Project
