地下水源热泵含水层水头分布及温度场的模拟分析

为使地下含水层能量更好为实际工程所用,进一步保护地下水空间,通过对地下水源热泵系统地下含水层中渗流场的分析,建立一抽一灌(对井抽灌)系统和一抽两灌系统地下水渗流数值模型,应用数值模拟方法对地下含水层渗流场水头分布及温度场进行模拟分析。结果表明:在相同的运行周期内,一抽两灌系统温度场的影响半径相对较小,并且抽灌井周围的等水头线分布较疏,水头变化缓慢,更利于地下水的回灌。尽量使回水井远离取水井,可以有效避免热贯通现象的发生。

Simulation and analysis of aquifer＇ s water head distribution and temperature filed of the underground water source heat pump

In order to make better use of the underground aquifer and to further protect the underground space.Based on the seepage field＇ s analysis of ground aquifer of underground water source heat pump, groundwater seepage＇ s numerical model of one pumping one recharging and one pumping two rechargings system was established, and numerical simulation method was used to simulate and analyse the distribution of ground aquifer＇ s seepage field＇ s water head and temperature. The results showed that： in the same period, the influence of the temperature field＇ s radius of one pumping two rechargings system was relatively small, and the equal headline was sparse, the water head changs slowly, it means that one pumping two rechargings system recharge. The farther between the pumping and rechargeing well, the easier to phenomenon. was more conducive to groundwater＇ s avoid the occurance of heat transfixion phenomenon.