水源热泵影响下地下水温度主控因素关联度分析

为研究地下水源热泵长期影响下,地下水温度主控因素的变化特征,选择安阳市第五人民医院为研究区,将地下水温度作为典型的灰色系统进行研究,采用灰色关联度的计算方法进行地下水温度、地下水位埋深、气温、降水量以及回水井水温之间的关联度分析,获取地下水温变化的主控因素。研究结果表明:在不受水源热泵影响时,地下水位埋深是地下水温度的主控因素。在水源热泵影响下,地下水温受气温、降水量、地下水位埋深和回水井水温的共同影响:在垂向上,回水井水温对监测井水温的影响程度随着深度的增大而逐渐降低,地下水温度的主控因素由回水井水温转变为地下水位埋深,在水平方向上,回水井水温对监测井水温的影响程度随着距离的增大而逐渐减小,地下水温度的主控因素由回水井水温转变为气温和地下水位埋深。

Correlation analysis on the main control factors of groundwater temperature under the influence of groundwater source heat pump

In order to study the variation characteristics of the main control factors of groundwater temperature under the long-term influence of ground source heat pump, Anyang 5th People''s hospital was chosen as the study area and the temperature field of groundwater was treated as a grey system. The study uses grey relational calculation method to analyze relation among groundwater temperature, groundwater depth, temperature, precipitation and water temperature of recharge wells, and to gain the main control factor of groundwater temperature. Results show that groundwater depth is the main control factor without the influence of groundwater source heat pump, while temperature, precipitation, groundwater depth and water temperature of recharge well would corporately affect the groundwater temperature under the influence of groundwater source heat pump: the influence of water temperature of recharge wells on the water temperature of the monitoring wells decreases with the increase of the depth vertically, and the main control factor of the groundwater temperature would change from water temperature of recharge well to groundwater depth, while the influence of the water temperature of recharge wells on the water temperature of the monitoring wells decreases with the increase of the distance horizontally, and the main control factor would change from water temperature of recharge well to temperature and groundwater depth.