摘要
本文利用饱和指数法对陕西蓝田汤峪2号孔的地下热水化学分析资料进行了系统处理,绘制出了该孔热水的SI—T曲线和SI—pH曲线。由曲线图上确定出了汤峪2号孔热水与深部围岩矿物达到溶解平衡时的温度为87℃;平衡时水的pH值为8.52;参与平衡的矿物为低钠长石、玉髓、镁绿泥石、浊沸石和微斜长石。同时还判断出,在热水由深部热储上升到地表的过程中,大约有47.37％的低矿化度水混入。
Using the saturation index method, this paper systematically discussed the hot-groundwater chemical-analytical data from the Tangyu bore-hole No.2 of Lantian County, Shaanxi Province and plotted out the SI-t and SI-pH curves for this bore-hole. From these diagrams of curves it is determined that the dissolution equilibrium temperature between the hot-water and the minerals of sourrounding rocks in depth for the Tangyu bore-hole No.2 is 87℃, the pH-value of this water in equilibrium is 8.52, and that the minerals taken part in the equilibrium are low-sodium feldspar, chalcedony, magnesiochrolite, laumontite and microcline. At the same time it has been judged out that about 47.37% of total amount of hot-water is low mineralized water which is ascended at the rising process from the deep hot-reservoir to the surface.
关键词
热水
化学成份
饱和指数
hot-aquatic chemistry, saturation index, dissolution equilibrium, Tangyu hot spring of Lantian County
