地铁工程对地下水源热泵渗流场及温度场影响的实验

摘要

In order to explore the influence of metro engineering on seepage field and temperature field of groundwater source heat pump, this article uses the indoor sand box experiment to observe the changes of groundwater level and groundwater temperature of simulated metro engineering of full or partial section partition, which is based on the groundwater source heat pump project of Shengjing Hospital at Huaxiang. Then, the timing chart of groundwater level and groundwater temperature is drawn under different conditions. There are mainly two experimental results. On the one hand, it shows that the direction of groundwater seepage is mainly influenced by the transverse par-tition mode and lower surface relative height difference of underground structure, and also affected by the water head. On the other hand, the distribution of groundwater temperature field is mainly affected by the horizontal component of the groundwater seepage direction, and the influence scope of thermal disturbance is closely related to the distance and position of cross-section of water.Therefore, the simulation and analysis of the indoor sandbox experiment with multi-condition are of great significance to improve the research on the stability of the groundwater environment and safe operation of groundwater source heat pump.%目的 探究地铁工程建设对地下水源热泵渗流场及温度场的影响.方法 以盛京医院滑翔分院地下水源热泵工程为研究对象,利用室内砂箱实验观测模拟地铁工程横向全部或部分断面隔断的地下水位和水温变化情况,进而绘制不同工况下的水位、水温时序图.结果 通过实验发现,地下水渗流方向主要受地下构筑物横向隔断方式、地下构筑物下表面相对高度差与水头的影响,地下水温度场分布主要受渗流方向水平分量的影响,其热扰动影响范围与过水断面距离及位置密切相关.结论 通过研究地铁工程对地下水源热泵渗流及温度场影响,完成多工况室内砂箱模拟实验及结论分析,对完善地下水环境稳定研究及地下水源热泵工程取回水安全运行具有重要意义.