基于PHREEQC数值模拟软件的方解石热力学溶蚀机理及控制因素  

Discussion on the mechanism of calcite thermodynamic dissolution and its control factors based on PHREEQC numerical simulation software

作　　者：唐慧雅 李国翔 郭梁锋 Tang Huiya;Li Guoxiang;Guo Liangfeng(College of Hydraulic and Environment,China Three Gorges University,Yichang 4430021 China)

机构地区：[1]三峡大学水利与环境学院,湖北宜昌443002

出　　处：《山西建筑》2018年第8期56-57,共2页Shanxi Architecture

摘　　要：方解石溶蚀机理及其控制因素讨论是岩溶"碳汇"作用的基础,也是重要的理论依据,对其研究必不可少。通过理论分析和数值模拟结果得出如下结论:影响方解石热力学溶蚀速率的主要因素是温度、离子浓度和二氧化碳分压。温度升高,离子浓度增大,二氧化碳分压增大,方解石的溶解量和溶蚀速率随之增大。The discussion on the dissolution mechanism of calcite and its controlling factors is the basis of the karst“carbon sequestration”,and it is also an important theoretical basis,which is essential to its research.Through theoretical analysis and numerical simulation,the following conclusions are drawn:the main factors affecting calcite thermodynamic dissolution rate are temperature,ionic concentration and partial pressure of carbon dioxide.As the temperature rises,the concentration of ions increases,the partial pressure of carbon dioxide increases,and the dissolution and dissolution rate of calcite increases.

关 键 词：方解石 PHREEQC软件 溶蚀机理 热力学 

分 类 号：TU458[建筑科学—岩土工程]