水源热泵直线型异侧抽灌系统渗流场影响分析

Analysis of impact of groundwater source heat pump system with injection wells on the opposite side of pumping wells to seepage field

以西安市某地下水源热泵直线型异侧布井为例,分别运用解析法、数值模拟方法分析了渗流场影响范围,并确定了渗流场影响范围、安全距离与井距的对应函数关系。结果表明:在含水层水文地质参数、井孔抽回灌量参数确定的条件下,渗流场影响范围、安全距离均与抽回灌井距呈正相关关系;水源热泵布井时应考虑抽回灌井群系统对渗流场区和周边建筑物地基沉降造成的影响,以便合理规划水源热泵布井区和优化抽灌井布井间距。

Taking an example of the straight line type parallel well in Xi ＇an groundwater source heat pump, the impact scope of seepage field and the corresponding function of the impact scope of seepage field, safe distance and well spacing are respectively analyzed by analytic method and numerical simula- tion method. The results showed that seepage impact scope and safe distance have a positive correlation with well distance when hydrogeologieal parameters and pumping parameters are definite. In designing wells layout of groundwater source heat pump, the impact of pumping systems on seepage and surrounding buildings should be taken into consideration , in order to reasonably plan the water source heat pump well area and optimize the pumping well spacing.