【作者】 孙旭曙；

【导师】 柴军瑞；

【作者基本信息】 西安理工大学 ， 水工结构工程， 2010， 硕士

【摘要】 随着经济发展和人类对环境问题越来越重视,目前,科研工作者对环境问题的研究越来越多,研究范围和涉及的学科也越来越广。在环境问题中考虑水-岩相互作用是热点之一,通过对水-岩相互作用条件下溶质迁移的特点和方式进行研究,可以确定地下水化学组分形成及固相成分形成的可能性,研究在自然和人为因素影响下地下水化学状况在时空上的变化,预测人类活动对地下水水质的影响,解决影响人类健康、生态环境及制约经济发展的环境污染问题。在充分了解和总结国内外研究现状的基础上,本论文主要做了以下方面的研究：(1)查阅国内外相关文献资料,了解了水-岩相互作用及其研究方法,总结和讨论了地球化学模拟方向和模拟软件,水-岩作用的形式,实验研究和水-岩相互作用研究趋势。(2)总结和讨论了岩体裂隙介质的特点,裂隙网络模拟,渗流理论,溶质运移理论和地球化学模拟的基本理论。(3)通过MATLAB优化工具箱对反向地球化学模拟进行了求解。(4)分别在稳定流和非稳定流条件下建立岩体裂隙网络矿物溶解-沉淀-迁移数学模型,介绍了耦合模型数值解法,编写FORTRAN程序对以上模型进行求解。对研究区域中渗流场,溶质浓度场和矿物溶解-沉淀的时空分布规律进行了定量化分析,预测了矿物溶解-沉淀-迁移的范围和发展趋势,并总结出了其变化规律。更多还原

【Abstract】 Nowadays,with the economic developed and environmental issues valued. At present,more and more researchers studied on the environmental issues,and the range of the studay became wider. It is one of hotspots that considerring Water-Rock Interaction in the environmental issues. By the researches on the features and methods of solute migration under the water-rock interaction,it can determine the formation of chemical composition in groundwater and possibility of formation of solid-phase composition, investigate the changes of groundwater’s chemistry under the influence of natural and human factors, forecast how human activities influenced groundwater quality, and solve the environmental problems which affected human health and retarded economic development.Based on understanding and summarizing of the situation of study home and abroad, the main pionts are as follows:(1)Referred to relevant references home and abroad to learn about the Water-Rock-Interaction and its researching methods, summarized and discussed the direction of geochemical modeling and simulation software, the Water-Rock-Interaction classification, experimental study and research trends.(2)Summarized and discussed the characteristics of rock mass fractured media, simulation of fracture network, theory of seepage, solute transport and geochemical modeling.(3)Solving the inverse geochemical simulation by the MATLAB optimization toolbox.(4)built the Model of mineral dissolution-precipitation-transportation in the stable flow and unsteady flow, introduced numerical stimulation of coupled model, written the FORTRAN program which had sovied the models as mentioned above.Given the spatial and temporal distribution of solute concentration field and mineral dissolution-precipitation quantitative analysis,forecasted the range and trends of mineral’s dissolution-precipitation-transportation,and summed up the change law.更多还原