考虑涂抹效应的排水板抽注水淋洗细粒土中污染液的轴对称解析解
发布时间：2018-08-29 19:03
【摘要】：针对细粒土中污染液清理的塑料排水板抽注水淋洗技术,考虑塑料排水板打设时不可避免的涂抹效应引起的土体干密度、孔隙率以及渗透系数的变化,并借鉴塑料排水板地基固结等应变理论的思想,假定同一深度上污染液浓度的变化速率为其变化速率的平均值,同时依据相关研究成果,忽略竖向渗流和分子扩散作用,采用分离变量法推导得到了淋洗过程中任意位置污染液浓度随时间变化过程的简化轴对称解析解答,并分析了涂抹效应对污染液淋洗清理速率的影响.结果表明,涂抹区土体渗透系数和涂抹区范围对污染液清理速率有着显著的影响,在塑料排水板抽注水淋洗技术的设计和分析中,考虑涂抹效应是十分必要的.
[Abstract]:In view of the plastic drainage board pumping and injection water leaching technology for cleaning up contaminated liquid in fine soil, the variation of soil dry density, porosity and permeability coefficient caused by the unavoidable smearing effect during the laying of plastic drainage board is considered, and the variation of contaminated liquid concentration at the same depth is assumed based on the idea of equal strain theory of consolidation of plastic drainage board foundation. Based on the relative research results, neglecting vertical seepage and molecular diffusion, the simplified axisymmetric analytical solution of the concentration of contaminated liquid changing with time at any position in the leaching process was derived by using the separation variable method. The effect of smearing on the leaching cleaning rate of contaminated liquid was analyzed. The results show that the soil permeability coefficient and the scope of the smeared area have a significant effect on the cleaning rate of the contaminated liquor. It is necessary to consider the smearing effect in the design and analysis of the plastic drainage board pumping and injection washing technology.
【作者单位】： 河海大学岩土力学与堤坝工程教育部重点实验室;河海大学江苏省岩土工程技术工程研究中心;
【基金】：国家自然科学基金资助项目(51278171,41530637) 中央高校基本科研业务费专项资金资助项目(2015B06014,2015B25914)
【分类号】：X505
，
本文编号：2212120
[Abstract]:In view of the plastic drainage board pumping and injection water leaching technology for cleaning up contaminated liquid in fine soil, the variation of soil dry density, porosity and permeability coefficient caused by the unavoidable smearing effect during the laying of plastic drainage board is considered, and the variation of contaminated liquid concentration at the same depth is assumed based on the idea of equal strain theory of consolidation of plastic drainage board foundation. Based on the relative research results, neglecting vertical seepage and molecular diffusion, the simplified axisymmetric analytical solution of the concentration of contaminated liquid changing with time at any position in the leaching process was derived by using the separation variable method. The effect of smearing on the leaching cleaning rate of contaminated liquid was analyzed. The results show that the soil permeability coefficient and the scope of the smeared area have a significant effect on the cleaning rate of the contaminated liquor. It is necessary to consider the smearing effect in the design and analysis of the plastic drainage board pumping and injection washing technology.
【作者单位】： 河海大学岩土力学与堤坝工程教育部重点实验室;河海大学江苏省岩土工程技术工程研究中心;
【基金】：国家自然科学基金资助项目(51278171,41530637) 中央高校基本科研业务费专项资金资助项目(2015B06014,2015B25914)
【分类号】：X505
，
本文编号：2212120
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