肥城矿区充水含水层地下水动态研究

分析了1963~2005年肥城矿区40多年的水位和水质数据,研究了该地区充水含水层地下水动态规律。结果表明:四灰含水层呈疏干趋势,水质表现为HCO3-、Cl-、K++Na+减少,SO42-、Ca2+增加;五灰与奥灰含水层水位呈波浪式升降,水质表现为Ca2+增加,其他离子变化不明显,二者动态特征基本一致;而引起此动态变化的主要因素为大气降水、地质构造等。结合其他水文地质资料,该动态研究可以用来估算地下水的侧向补给量及更新速率,判断发生的水化学作用及速度,推断含水层水力联系方式及程度等。

Groundwater dynamics of water-filled aquifers in Feicheng colliery

Based on analyses of groundwater level and water quality from 1963 to 2005, the groundwater dynamics of the water-filled aquifers in Feicheng colliery was studied. The results show that 4th limestone aquifer tends to be drained off, and the content of HCO3^- , Cl^- , K^＋ and Na^＋ decreases, while that of SO4^2- and Ca^2＋ increases. The water level in 5th limestone and Ordovician limestone are changing wave upon wave with an increment of the content of Ca^2＋ and less changes of the contents of other ions. The features of their groundwater dynamics were similar. Key factors resulting in the dynamic changes include atmospheric precipitation, geologic structure, manually discharging water, etc. Coupling with other hydrogeologic data, the groundwater dynamics research can be used to approximately evaluate lateral recharge amount and renovate rate of groundwater, determine the hydrogeochemical actions and their speed, and induce the way and extents of hydraulic contact among aquifers, etc.