基于FEFLOW的地下水热源渗流温度研究
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摘要
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.
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.
引文
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[2]许广森,高秀生.基岩地下热木资源系统管理[J].水文地质工程地质.1995.22(3):20- 30.
[3]周训,陈明佑,吴胜军,等.天津市深层基岩地下热水系统数值模拟中若干问题的处理[J]地球科学.2002.2:163-167.
[4]周训,陈明佑,李慈君.深层地下热水运移的三维数值模拟[M].北京:北京地质出社.2001.
[5]樊秀峰,吴振祥,简文彬.福州温泉区地下热水开采与水位动态响应研究[J].中国地质灾害与防治学报.2004.15(4) :82-86.
[6]张远东,魏加华,李宇,等.地下水源热泵才能的水-热耦合数值模拟[J].天津大学学报.2006.39(8):907-912.
[7]倪龙,马最良.热弥散对同井回灌地下水源热泵的影响[J].建筑热能通风空调.2005.24(4):7-10.
[8]张远东,魏加华,王光谦.区域流场对含水层采能区温度场的影响[J].清华大学学报(自然科学版).2006.46(9):1518-1521.
[9]雷海燕,朱家玲.孔隙型地热采灌开发方案的数值模拟研究[J].太阳能学报.2010.31(12):1633-1638.
[10]程万庆,刘九龙,陈海波.地热采灌对井回灌温度场的模拟研究[J].世界地质.2011.3:486-492.
[11]王洋,张可霓,Allan D.W.等.加拿大温尼伯IKEA场地开环地热系统数值模拟[J].可再生能源.2013.31(8):123-128.
[12]田光辉.天津市东丽湖温泉度假旅游区地热资源可持续开发利用研究[D].中国地质大学.2014.