中南大学学报（自然科学版）2018，Vol.49Issue(1)：201-207,7.DOI:10.11817/j.issn.1672-7207.2018.01.026
排水板抽注水淋洗污染液的轴对称消弭简化解析解答
A simplified analytical solution for axisymmetrical dispersion of liquid contaminant due to flushing with PVDs
摘要
Abstract
In order to simplify the analysis of the dispersion process of concentration of liquid contaminant in soil under axisymmetrical flushing conditions, the rate of variation of the concentration of liquid contaminant at the same depth was assumed to be the average value at that depth. This assumption was made with the reference to the idea of equal strain theory of ground consolidation with prefabricated vertical drains(PVDs). Meanwhile, the effects of vertical seepage and molecular diffusion were ignored based on relevant research outcomes. A simplified analytical solution to the process of variation of concentration of liquid contaminant at any arbitrary position with time was derived using the method of separation of variables. Calculated results were compared with the results from the available solutions and laboratory experiments. The applicability of the proposed solution in this study was verified. The results show that the radial dispersion rate of concentration of liquid contaminant in fine-grained soil is significantly improved by the flushing technique with water injection and extraction using PVDs. The influence of vertical seepage and molecular diffusion on the dispersion of concentration of liquid contaminant can be ignored.关键词
塑料排水板/淋洗/细粒土/污染液/简化解析解答Key words
prefabricated vertical drain/soil flushing/fine-grained soil/liquid contaminant/simplified analytical solution分类
资源环境引用本文复制引用
解子腾,雷国辉,施建勇..排水板抽注水淋洗污染液的轴对称消弭简化解析解答[J].中南大学学报（自然科学版）,2018,49(1):201-207,7.基金项目
国家自然科学基金资助项目(51278171,41530637) （51278171,41530637）
中央高校基本科研业务费专项资金资助项目(2015B06014, 2017B20614) (Projects(51278171, 41530637) supported by the National Natural Science Foundation of China （2015B06014, 2017B20614）
Projects(2015B06014, 2017B20614) supported by the Fundamental Research Funds for the Central Universities of China) （2015B06014, 2017B20614）
