摘要
该区具有２类不同的水－岩作用模型：南部岩溶区以质量、电荷守恒原理构造的线性方程组模型；北部第四系孔隙水以系统化学反应自由能最低降速原理构造的线性规划模型；这二种模型均用地下水某个流程段内化学组分的变化量来求算水、岩、气间的物质交换量．结果显示，南部岩溶含水层主要发生碳酸盐矿物的溶解沉淀作用，一些地段出现脱白云石化现象；北部孔隙含水层中则发生长石类和角闪石等矿物在水中ＣＯ２作用下风化为粘土矿物，并在风化过程中析出的Ｃａ、Ｓｉ、Ｆｅ而引起ＣａＣＯ３，ＳｉＯ２，沉淀并有磁铁矿的生成．
In order to investigate the mechanism of the evolution of the groundwater and chemical components in the nature state, two kinds of models have been set up. One mathematical model is a linear equation Provided by the conservation of mass and elections for the karst aquifer in the south of the area. The another is a linear Programming mathematical model for the porous aquifer in the north. It was Provided by the theory of the fastest falling of Gibbs free energy in a chemical interactions system To solve the-two models, the amount of the material exchanges between groundwater. rocks and gases was obtained(standed for mol / l). The results demonstrate that the main water-rock reactions are dissolving and Precipitating of the carbonates, and there is dedolomitisation in some places in the karst aquifer. In the porous aquifer in the north, feldspar, amphibole and black mica minerals are disntegrated into clay minerals by the aqueous gas CO2 A Part of Ca, Si and Fe in these minerals is set free in the disintegrating process, thus causing the precipitation of CaCO3 and SiO2. Heralion also forms.
出处
《桂林工学院学报》
1996年第4期410-414,共5页
Journal of Guilin University of Technology
关键词
地下水
水-岩作用
溶解
沉淀
线性规划模型
groundwater
water-rock reaction
model
dissolution
precipitation
Shangdong
Zibo
