基于FEFLOW的地下水热源渗流温度研究

Study on Seepage Temperature of Groundwater Heat Source Based on FEFLOW

为研究地下水"热"源对于渗流场的影响,选取某水库水源地辐射取水区及部分扩张区为研究范围,使用地下水通用软件FEFLOW对单一地下水热源作用下的Y型河道的渗流场和温度场进行研究,得出地下水热源对渗流场和温度场的影响规律,结果显示:地下水位受水源的影响,在不同位置水位不同,含水层内随着到水源点距离的增加,水位逐渐降低,到达某个位置时会保持稳定不变;靠近地表的地下水温会随着到水源点距离的增加逐渐降低,在垂向上,含水层内地下水温随着高程的降低逐渐降低,而在库水区,受库水的影响垂向水温变化规律则刚好相反,研究结论可为实际工程提供理论指导。

In order to study the influence of the groundwater "heat" source on the seepage field. Selecting the radiation source area and part of the expansion area of a reservoir water source area as the research scope, and the seepage field and temperature field of the Y-type channel under the action of a single groundwater heat source using the groundwater general software FEFLOW The research results show that the influence of groundwater heat source on the seepage field and temperature field shows that the groundwater level is affected by the water source, the water level is different at different locations, and the water level gradually decreases with the increase of the distance from the water source point in the aquifer. At a certain position, it will remain stable;the temperature of the groundwater near the surface will gradually decrease as the distance from the water source increases. In the vertical direction, the temperature of the groundwater in the aquifer gradually decreases with the decrease of the elevation, while in the reservoir area, The law of vertical water temperature change influenced by reservoir water is just the opposite. The research conclusion can provide theoretical guidance for practical engineering.