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文中通过分析研究区内稳定同位素氘(D)和氧(18O)以及放射性同位素氚(3H)和碳(14C)的空间分布特征,讨论了地下水的补给来源和补给特征,计算了本区地下水的年龄。结果表明:大气降水和地表水对清水河上游平原地下水的补给作用不明显,清水河平原地下水主要接受西部山区侧向径流的补给;研究区地下水年龄在2.03ka～23.81ka之间,并表现出以下两个显著特点:1)深层承压水年龄显著大于潜水年龄;2)东部清水河平原地下水年龄较中西部山区地下水年龄要老。总体上,清水河上游平原地下水更新速率较为滞缓,更新能力较差,该结论对当地地下水水资源的可持续开发利用和科学管理具有重要意义。
In this paper, by analyzing the spatial distribution characteristics of stable isotope deuterium (D) and oxygen (18O) and tritium (3H) and carbon (14C) in the study area, the supply sources and recharge characteristics of groundwater are discussed. age. The results show that the precipitation and surface water have little effect on groundwater recharge in the upper reaches of Qingshuihe plain. The groundwater in Qingshuihe Plain is mainly supplied by lateral runoff from the western mountainous areas. The groundwater in the study area is between 2.03ka and 23.81ka, The following two salient features are as follows: 1) The age of deep confined water is significantly larger than the diving age; 2) The age of groundwater in Qingshuihe Plain in east China is older than the groundwater in central and western mountains. In general, the renewal rate of groundwater in the upper reaches of Qingshuihe River is relatively slow and its regeneration capacity is poor. This conclusion is of great significance to the sustainable development and utilization of groundwater resources and scientific management.