| 低渗透性多孔介质室内弥散实验及弥散度求解研究 |
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| 引用本文： | 曹恩伟,刘仍阳,常大海,董贵明. 低渗透性多孔介质室内弥散实验及弥散度求解研究[J]. 环境科学与管理, 2016, 0(10): 28-31. DOI: 10.3969/j.issn.1673-1212.2016.10.008 |
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| 作者姓名： | 曹恩伟 刘仍阳 常大海 董贵明 |
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| 作者单位： | 1. 徐州市环境监测中心站,江苏 徐州,221116;2. 中国矿业大学 资源与地球科学学院,江苏 徐州,221116 |
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| 基金项目： | 江苏省环境监测科研基金项目(1403) |
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| 摘 要： | 低渗透多孔介质在浅部含隔水层中分布广泛,是地下水污染物迁移的重要载体,然而其弥散度的取值目前研究还不足。针对此问题,以溴化钠为示踪剂开展了低渗透多孔介质的室内弥散实验研究,介质渗透系数为0．048 m/d,通过离子选择电极法测定溴离子浓度,并分别采用解析法和数值法进行了弥散度的求解,解析法和数值法求得的弥散度分别为0．0048 m 与0．0065 m,研究成果可以为低渗透多孔介质中污染物迁移预测提供弥散度值参考。
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| 关 键 词： | 弥散度 低渗透性 多孔介质 室内实验 |
Experimental Study on Indoor Dispersion Degree of Low Permeability Porous Media |
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| Cao Enwei,Liu Rengyang,Chang Dahai,Dong Guiming. Experimental Study on Indoor Dispersion Degree of Low Permeability Porous Media[J]. Environmental Science and Management, 2016, 0(10): 28-31. DOI: 10.3969/j.issn.1673-1212.2016.10.008 |
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| Authors: | Cao Enwei Liu Rengyang Chang Dahai Dong Guiming |
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| Abstract: | Low permeability porous media are widely distributed in the shallow contain water-resisting layer, as an important carrier of groundwater pollutant migration, but there’s still very little research on its dispersion degree value. Aiming at this prob-lem, this study carried out indoor diffuse experiment of low permeability porous media, design with sodium bromide as a tracer and using ion selective electrode determination of bromine ion concentration in porous medium, the coefficient of permeability of por-ous medium is 0. 048 m/d, on this basis, respectively by analytical method and numerical method for the solution of the degree of dispersion. The dispersion degree of analytical method and numerical analysis method is respectively 0. 004 8 m and 0. 006 5 m. The research results can be predicted for migration of pollutants in low permeability porous media dispersion value of reference. |
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| Keywords: | dispersity low permeability porous media laboratory experimentation |
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