中文摘要：

针对水源热泵抽灌对地温场的影响,运用Comsol Multiphysics多物理场全耦合软件建立热-渗耦合的数值计算三维模型。对比分析不同回灌量下地温场分布云图和不同回灌量下地温场的分布规律,得出单井回灌量越大热影响半径越大、同时热峰面向抽水井方向运移速度越快,达到热贯通时间越短;前期系统运行回灌井附近区域温度变化明显,后期系统运行对回灌井周边较远区域温度变化较影响明显;不同位置热运移规律均与渗流速度相关,影响半径基本与渗流速度呈正比。

英文摘要：

For studying the effect of the groundwater heat source wells working on the temperature field, the Comsol Multiphysics is used to build a three dimensional numerical model which couples thermal conduction and groundwater advection conductions. Some conclusions have been concluded by contrasting five different conditions that under different quantities of heat exchanged water put into the recharge well and a detail analysis of one. With the quantity of recharged heat exchanged water becoming larger, the influence radius expands and the heat surface between the two wells transfers more quickly to the pumping well. Temperature of the region close to the recharge areal increases obvious｜y in early stage, while temperature of the region not so close to the recharge area ismore influenced in later stage. The temperature is closely relate to the seepage velocity and has nothing to do with position. Influence radius is almost proportional to seepage velocity.