张掖盆地的地下水年龄分布特征研究

Research on Distribution Characteristics of Zhangye Basin Groundwater Age

地下水的年龄是决定地下水是否可更新及能否作为资源被持续开发利用的重要指标,研究盆地地下水的资源属性,对区域地下水的合理可持续开发具有重要指导意义。本文利用张掖盆地地下水的测年数据,结合当地水文地质条件,分析了张掖盆地地下水年龄分布特征。研究表明,盆地浅层地下水年龄较小,属于可更新地下水;盆地中游地下水受地表水补给的影响,地下水年龄较年轻;随着盆地深度的增加,地下水年龄变老。

Groundwater age is an important indicator to determine whether groundwater resources could be developed and utilized sustainably. Study on groundwater resource has important guiding significance to rational and sustainable development of regional groundwater. Combined with local hydrogeological conditions, the author used groundwater age data and analyzed the resource property of Zhangye basin groundwater. Research show that shallow groundwater in Zhangye basin is young; Affected by surface water, groundwater age in midstream of the basin is young; Groundwater age increases with the basin depth.