泰安大汶口盆地地下水化学特征分析
ANALYSIS ON THE HYDROCHEMICAL STUDY OF GROUNDWATER IN DAWENKOU BASIN OF TAIAN
徐扬 1吕华1
作者信息
- 1. 济南大学资源与环境学院,济南,250022
- 折叠
摘要
依据大汶口盆地东北部的水文地质条件将其地下水系统划分为第四系孔隙水、古近系裂隙水、寒武-奥陶系岩溶水,分析地下水系统中主要离子、矿化度和水化学类型的特征.结果表明,第四系孔隙水受人类活动的影响较为严重,古近系裂隙水第一含水层水质较好;第二含水层受含水岩性等因素影响,水质变差,水化学类型由HCO3-Ca型变为SO4-Ca型;寒武-奥陶系岩溶水受外部因素影响较少,水质较好.通过开采性抽水试验研究古近系第二含水层水质变化,发现长时间抽水可以改善水质,但不能从根本上使水质变好.
Abstract
Based on hydrogeological conditions of the Dawenkou basin, the groundwater system is divided into Quaternary pore water, Paleogene fissure water and Cambrian - Ordovician karst water. The feature of the major ions, salinity and water chemical types are analysed in groundwater systems. It show that the quality of the quaternary pore water is effected more severe by human activities. The quality of the first Paleogene fissure aquifer water is better; the quality of the second Paleogene fissure aquifer water which is effected the lithology of aquifer and other factors is becoming bad, the chemical type turns the type of HCO3-Ca into the type of SO4 - Ca. The Cambrian-Ordovician karst water quality is much better, beacouse it's effected less by external factors. With the expioit pumping test, the second fissure aquifer water quality is improved by long time pumping, but it can not fundamentally make the water quality better.
关键词
水化学特征/水质变化/大汶口盆地Key words
chemical type/change of water quality/Dawenkou basin引用本文复制引用
出版年
2011
NETL
NSTL
维普
万方数据