基于流热耦合模型的土石坝渗流热监测研究吴志伟.pdf

36 2 Vol.36 No.2 2015 2 Rock and Soil Mechanics Feb. 2015 DOI 10.16285/j.rsm.2015.02.039 1, 2 1 1. 210098 2. 130033 TV 139.14 A 1000 7598 (2015) 02 0584 07 Numerical simulation of embankment dam seepage monitoring with temperature based on thermal-hydro coupling model WU Zhi-wei1, 2, SONG Han-zhou1 (1. College of Earth Science and Engineering, Hohai University, Nanjing, Jiangsu 210098, China; 2. Northeast Electric Power Design Institute, Changchun, Jilin 130033, China) Abstract: In order to implement the seepage monitoring with temperature in embankment dam with the popular distributed fiber optic temperature sensor system (DTS), it’s necessary to study the background characteristics of temperature field. Herein, a saturated-unsaturated seepage field and temperature field coupling model (thermal-hydro coupling, i.e. T-H) is established. The model considers the heat convection-conduction-diffusion, as well as the boundary periodically fluctuation with atmosphere temperature. Some parameters are considered nonlinearly so that the result of simulation is closer to the true state of dam temperature field. For instance, the fluid viscosity is influenced by temperature and thermal conductivity is influenced by moisture, and so on. A clay core embankment dam is taken as a