抽灌井的布置方式对地下水流场和温度场的影响

Effect of Pumping and Irrigation Wells Arrangement Groundwater Flow Field and Temperature Field

通过分析地下水流场和温度场的状态,确定适合水源热泵系统的最佳抽灌井布置方式。以沈阳市某住宅小区为例,利用Flow Heat1.0软件,分析了冬季在3种顺排布置和2种叉排布置情况下,抽灌井周边的地下水流场和温度场的变化情况,地下水源热泵系统运行的最佳状态是不影响地下水流场和温度场的现况。结果地下水源热泵系统受地下水流场、温度场、井距、热对流、运行模式等诸多因素的影响,在该影响因素的影响下水源热泵运行效率有所降低,通过对五种工况的最不利抽水井和回灌井的比较分析,发现抽水井的水位下降值越小、回灌井的水位上升值越小,水温度值变化越小越好。本次实例中第五种布置方式1,6,11,16号井为抽水井,其余为回灌井的布置方式最为合理,此时水位值和温度值的变化量最小。

Groundwater source heat pump systems due to groundwater flow and temperature fields,and well spacing,the influence of heat convection,and many other factors,resulting in its operating efficiency decreased.Taking Shenyang City,with residential area,for example,the use of Flow Heatl.O software analyzed under three arranged in a row and two staggered arrangement of pumping irrigation wells surrounding changes in winter groundwater flow field and temperature field Happening.Taking into account the intention of groundwater source heat pump system is running both as much as possible without affecting the groundwater flow and temperature fields,smaller pumping well after both operating water level drop value,the level of appreciation of the recharge wells smaller,the smaller the change in water temperature the better.So the comparison results for each of the most unfavorable conditions pumping wells and recharge wells.Then five kinds of conditions of the most disadvantaged pumping wells and recharge wells compared.The results show：The fifth example layout scheme is more reasonable.