摘要
水 岩作用过程是一个随机过程。依据化学热力学的基本原理,建立了描述水 岩系列间相互作用的数学模型,并采用Monte Carlo随机分析方法进行求解。在实例研究中,以若干特征值(如均值、方差以及变异系数等)作为计算结果,来反映水 岩系列间相互作用的状态及其变化。由计算结果知,研究区系统内有关水 岩作用反应均可自发进行;因其方差较大,体系自由能接近零或处于平衡状态的机会较大;区内地下水的酸化主要源于页岩中有机质的氧化,由此导致地下水具有酸性及碳酸性侵蚀作用。
The water-rock interaction (WRI) process is a stochastic one. The mathematical model of WRI is set up on the basis of principles of chemical therm-dynamics, which is solved by using the Monte-Carlo method. A case study is carried out, in which some characteristic values, i.e. average one, standard deviation and coefficient of standard deviation, are used to reveal the WRI state and its variation within the domain. It is known from the result that within the system:(1) the related interactions may take place by themselves, (2) the relative large value of standard deviation shows the probability of the system approximate to equilibrium state, and (3) the acidification of groundwater is mainly produced by the oxidation of organic substances in shale.
出处
《水科学进展》
EI
CAS
CSCD
北大核心
2004年第2期211-215,共5页
Advances in Water Science
基金
国家自然科学基金资助重点项目(50139030)~~
