北京市平原区浅层地下水热泵应用适宜区划分

Suitability division for shallow groundwater heat pumps in Beijing plain areas

伴随着地下水热泵空调系统的广泛应用,未注重水文地质条件的热泵工程渐多,导致地下水回灌难,浪费了地下水资源,开展热泵系统应用的适宜区划分极为必要。针对北京平原区的水文地质条件,确定了影响地下水热泵系统发展的主要因素,利用GIS技术对浅层地下水含水层导水系数、有效导水系数、水质等因素图层进行了叠加分析,并统筹考虑水源地保护区和地面沉降区,将平原区分为适宜发展区、较适宜发展区、限制发展区和禁止发展区。

With the development and application of groundwater heat pumps （GWHP）, many heat pumps can＇t reinject the water into aquifer when the injection wells are clogged, which wastes groundwater resources. So it＇s very important to carry out suitability division for groundwater heat pumps. In terms of hydrogeological condition of Beijing plain areas, some main factors affecting GWHP application were determined, which are the transmissivity coefficient, effective transmissivity coefficient and groundwater quality. The superposition analysis technology was used to overlap these layers to form four subzones of Beijing plain areas which are suitable zone, less suitable zone, constrained zone and forbidden zone by taking groundwater source field and land subsidence area into consideration.