地下多组分反应溶质运移数值模拟:地质资源和环境研究的新方法

地下多组分反应溶质运移数值模拟(RTM)是解释地球系统中的耦合过程和不同时空尺度对其影响的重要工具。RTM是研究地球科学基础理论、地质资源和环境等复杂地球化学过程的一个新方法,可用于如废物处置安全性评估、地下水污染研究、二氧化碳地质储存、金属矿床的地浸开采等的研究中。笔者首先回顾了反应溶质溶质运移模拟的发展历史,然后总结了反应溶质运移模拟的发展现状,再从耦合过程、空间尺度、裂隙和非均质介质处理角度说明了反应溶质运移模拟所面临的挑战。结合地下水质的演化、生物降解、CO2地质储存等具体实例讨论了反应溶质运移模拟的广泛应用前景,探讨了反应溶质运移模拟的未来发展方向。

Subsurface Reactive Transport Modeling:A New Research Approach for Geo-Resources and Environments

Subsurface reactive transport modeling(RTM) is a new research approach for studying fundamentals of earth sciences,and solving problems of geo-resources and environments with complex physical and chemical processes,such as the safety assessment of waste disposal,groundwater pollution,environmental remediation,CO2 geological sequestration,and solution mining of metal deposits.We first review the history of RTM,the current status of RTM is then summarized;Furthermore,we discuss challenges raised from coupled processes,spatial scales,treatment of fractured rock and heterogeneous media.We use modeling examples of groundwater quality evolution,nitrate biodegradation and CO2 geological sequestration,to demonstrate the RTM applicability and broad application prospects.Finally we explore the future directions of the RTM research.