论文部分内容阅读
通过在关中盆地典型地貌系统取样,在实验室中应用吹扫捕集气相色谱法对关中盆地浅层地下水样品CFC-11、CFC-12和CFC-113浓度进行测定,以亨利定律为基础建立了计算地下水CFC年龄的活塞模型。利用CFC输入函数对地下水表观年龄进行了计算。研究结果表明,关中盆地浅层地下水的年龄随埋深增加而增大;从两侧山前向渭河,浅层地下水年龄呈增加的趋势;自然状态下,渭河水对地下水的影响仅局限在河道两侧2km范围内。
Through the sampling of the typical topographic system in the Guanzhong basin, the concentrations of CFC-11, CFC-12 and CFC-113 in the shallow groundwater samples in the Guanzhong Basin were determined by using purge and trap gas chromatography in the laboratory. Based on Henry’s Law, Piston model for calculating groundwater CFC age. The apparent age of groundwater was calculated using the CFC input function. The results show that the age of shallow groundwater in Guanzhong basin increases with the increase of buried depth, and the age of shallow groundwater tends to increase from the two sides to the Weihe River. Under natural conditions, the influence of Weihe River on groundwater is confined to the river Within 2km on both sides.