摘要
作者根据北京小汤山一带热、矿泉水文地质特征，把９０％的白云岩和１０％的花岗岩作为试料，把二次蒸馏水作为反应溶液，将它们一起放在纯钛高压釜内，在５０—２００℃的温度和（２００—５００）×１０￣５Ｐａ的压力下进行水—岩反应动力学的实验。实验结果表明：水从岩石中萃取出的Ｋ￣（＋）、Ｎａ￣（＋）、Ｃａ￣（２＋）、Ｍｇ￣（２＋）、Ａｌ￣（３＋）、ＨＣＯ、ＮＯ、Ｆ￣（－）、Ｃｌ￣（－），ＳＯ、∑Ｆｅ和ＳｉＯ＿２等离子和氧化物的含量随着岩石的成分、温度、压力、水的ｐＨ值、岩石粒度、氧化—还原环境、时间和水的循环次数呈规律性变化。这些规律揭示了小汤山一带热、矿泉形成的机理。为热田的开发和人造温泉提供了理论上的依据。
On the basis of the hydrogeological characteristics of hot mineral springsin Xiaotangshan area,Beijing,authors engaged in the experiments of water-rockreaction using dolomite(90%)and granite(10%)as starting materials andquadratic distilled water as reactive solution,which were put into Ti-highpressure vessels under 50-200℃ and(200-500)× 10￣5Pa,The results of experi-ment showed that the quantites of ions and oxides for K￣(+), Na￣(+),Ca￣(2+),Mg￣(2+),Al￣(3+),HC0,NO,F￣(-),Cl￣(-),SO,∑Fe and SiO_2 extracted from the rocks intothe solution cange with the variations of rock compositions,temperatures,pressures,pH values of water,grain sizes of rock, redox state,and numbers oftime for water cycle etc.These laws brought to light the mechanism of themain elemental change in the formation of hot mineral springs in Xiaota-ngshan area.Authors provided theoretical evidences for opening up hot fieldsand man-made hot springs.
出处
《岩石矿物学杂志》
CAS
CSCD
1994年第1期10-18,共9页
Acta Petrologica et Mineralogica
关键词
水-岩反应
元素变化规律
动力学
Dynamic experiment
reaction of rocks with water
varyinglaws of elements
low temperature and low pressure
