长江科学院院报2016，Vol.33Issue(6)：12-17,6.DOI:10.11988/ckyyb.20150180
基于温度时间序列分析的水库下泄低温水入渗速度研究
Study on the Seepage Rate of Low Temperature Water Discharged from Reservoir Using Time Series Analysis
摘要
Abstract
Temperature was used as a tracer to capture the hypothetic flow. Based on the equation of one⁃dimension⁃al steady⁃state water and heat transport in saturated porous medium, seepage velocities were estimated using time series thermal data. The application conditions and ranges, and the sensitivity to thermal properties of this method were analyzed. The vertical temperature at different depths in the riparian zone of the lower reach of Xin’ an River, in Zhejiang Province, were monitored, and the changes in phase and amplitude of the temperature type curve were analyzed to quantify surface water⁃groundwater interactions. Results show that seepage velocity was sensitive to am⁃plitude variation at low flow rates, and the greatest sensitivity of seepage rate to phase shift occurred near ±1×10-5 m/s. In the monitoring period, the seepage velocity fluctuated from 2.22×10-5 m/s to 4.39×10-5 m/s, and the val⁃ues of the seepage velocity were all positive, which means that groundwater was recharged by surface water. The time series method which is insensitive to streambed scour and sedimentation, allows for application under a wide range of complex hydrodynamics conditions, and overcomes the effect of thermal dispersivity to some extent.关键词
低温水下泄/入渗流速/时间序列分析/振幅比/相位差Key words
low temperature water discharged/seepage velocity/time series analysis/amplitude ratio/phase shift分类
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朱蓓,赵坚,陈孝兵,李英玉..基于温度时间序列分析的水库下泄低温水入渗速度研究[J].长江科学院院报,2016,33(6):12-17,6.基金项目
国家自然科学基金项目 （）
