The water reources need to be added urgently with the conditions of the over - exploitation of the geothermal water resources and the continuous dropping of water level. This paper proposes a natural geothermal reinjection method to carry out the reinjection test for the heat reservoir with 1 200 - 1 400 m according to the Hydrogeologic Conditions of Kaifeng city to monitor the water level, temperature and water quality; To analyze the affect on the heat reservoir, and then calculate reinjection permeability coefficients. The research results show that the deep aquifer has the good conditions for reinjection operation , and the influence of reinjection method is not obvious. In addition, the reinjection facilities are built, the exploitation of deep geothermal water can be added effectively , and the sustainahle exploitation of underground geothermal water resources can be achieved.%针对开封市中心城区深层地下热水水位下降,出现降落漏斗,亟需人工补充地下水源的现状.依据该区水文地质特征,采用自然回灌方式,对地下1200～1400 m热储层进行人工回灌试验,监测回灌前后水位、水温及水质的变化,分析回灌对热储层的影响,计算注水渗透系数.研究结果表明,该区深层含水层回灌通畅,使用自来水回灌,对热储层水温、水质影响不明显.说明该区的深层地下水资源具有良好的回灌条件,建设回灌工程可以补充热储开采量,恢复或抬升地下水位,保持地下热水资源的可持续利用.
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