Testing Study on Impact of Different Saturated Solution to Water-Soil Chemistry Interaction

摘要

By studying the purple muddy siltstone in the Three Gorges region, HUANGLASHI landslide unconsolidated soil sample was taken to do saturated experiment indoor. Put the sample immersed in different aqueous solution, measure ion content of solution at different saturated times. According to the minimum energy principle, establish thermodynamic reaction model. Under different saturated conditions, analyze the rule of water-soil chemistry interaction in the saturated process through linear programming. The results show that unconsolidated soil-water interaction types are different in different saturated process of different solution. Dolomite minerals composition mainly dissolves in CHANGJIANG water and alkaline solution, Calcite minerals composition dissolution and Ca-K icon exchange adsorption mainly occur in laboratory water, pure water and acidic solution. In addition, with the saturated time, the activity of water-soil chemistry interaction is different in different solutions, soil-acid solution interaction is the most intense at the saturated time of l-7days,others are at the time of 7-16days.At late saturated time, under different conditions of saturating, all different water-soil chemistry interactions are weakened and tend to equilibrium.