| 裂隙岩体中污染物运移过程的数值模拟 |
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| 引用本文： | 薛强,梁冰,刘建军.裂隙岩体中污染物运移过程的数值模拟[J].岩土力学,2003(Z2). |
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| 作者姓名： | 薛强 梁冰 刘建军 |
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| 作者单位： | 辽宁工程技术大学力学与工程科学系 阜新123000
(薛强，梁冰)，中国科学院武汉岩土力学研究所 武汉430071(刘建军) |
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| 基金项目： | 国家“十五”攻关资助(2001BA803B0404)，辽宁省自然科学技术基金资助项目(2001101063)。 |
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| 摘 要： | 基于双重介质理论模型建立了污染物在地下环境中运移的耦合数学模型,给出了有限元离散的数值格式。并以核废料储存过程中核素90Sr为例,采用所建立的数值模型模拟其在裂隙岩体中运移过程,预测了污染物的浓度分布范围和发展趋势。模拟结果表明:核素90Sr在处置库中运行40年后,下游地区的抽水井的浓度可达到3 100 Bq/m3,超出了国家规定的标准,为固体废物场址的选择以及污染的控制提供了决策依据。
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| 关 键 词： | 裂隙岩体 污染物传输 双重介质 数值模型 污染预测 |
Numerical simulation of contaminant transport in jointed rockmass |
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| XUE Qiang,LIANG Bing,LIU Jian-jun.Numerical simulation of contaminant transport in jointed rockmass[J].Rock and Soil Mechanics,2003(Z2). |
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| Authors: | XUE Qiang LIANG Bing LIU Jian-jun |
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| Affiliation: | XUE Qiang1,LIANG Bing1,LIU Jian-jun2 |
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| Abstract: | Numerical simulation of contaminant transport in underground jointed rockmass is a focal point in the course of disposing solid wastes and environmental assessment. Based on dual media theory, a two-dimensional numerical model has been developed for describing the transportation and transformation of contaminants in fractured porous media, and the finite element numerical scheme is given. Taking radionuclides 90Sr as an example, the approach has been used for the simulation of groundwater flow and contaminant transport. It predicts the temporal and spatial distribution features of contaminant concentration. Numerical simulation results show the pumping well concentration research 3100 Bq/m3 after the radionuclides 90Sr storage in the disposal repository about 40 year. The concentration value exceeds the national standards index of pollution. It provides scientific basis for making decision of the disposal field and control and prevention of pollutions. |
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| Keywords: | fractured rock contaminant transport dual media theory numerical model contaminant prediction |
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