地下水开采引发的土体变形对污染物迁移影响研究Study on Impact from Soil Mass Deformation on Pollutant Migration Initiated by Groundwater Exploitation
马青山,贾军元,田福金,雷廷
摘要(Abstract)：
地下水开采引发的土体变形对污染物迁移具有重要影响。结合地下水渗流理论、太沙基一维固结理论和溶质运移对流-弥散理论,建立了变形土体中污染物迁移三维耦合数值模型,考虑了孔隙度、渗透系数和水动力弥散系数随有效应力的动态变化。通过对实际案例进行模拟,分析了地下水开采引发的土体变形对污染物迁移规律的影响。结果表明,地下水位下降,土体有效应力增加,土体骨架压缩变形,使得孔隙度、渗透系数减小,导致水动力弥散系数增幅减小,从而延缓了污染物迁移的对流扩散过程。
关键词(KeyWords)： 变形土体;污染物迁移;参数动态变化;三维耦合数值模型
基金项目(Foundation): 中国地质调查局南京地质调查中心——南昌多要素城市地质调查项目(DD20189240)
作者(Author): 马青山,贾军元,田福金,雷廷
参考文献(References)：
- [1]Galeati G,Gambolati G. Neuman S P. Coupled and partially coupled Eulerrian-Lagrangin model of freshwater-saltwater mixing[J]. Water Resource Research,1992,28(1):149-165.
- [2]Catherine A,Peters K H. Multi-component NAPL. Solidification thermodynamics[J]. Transport in porous media,2000,38(1/2):57-77.
- [3]Massmann J W. Applying groundwater flow models in vapor extraction system design[J]. Journal of Environmental Engineering,1989,115(l):129~149.
- [4]Bear J. Dynamics of Fluids in Porous Media[M]. New York:American Elsevier Publishing Company,1972.
- [5]Loroy J J C,Soga K,Savvidou C,Britto A M. Finite element analysis of consolidation and contaminant transport in porous media[C]//Environmental Geomechanics[s. l.]:Balkema,Rotterdam,1996:263-268.
- [6]Smith D W. One-dimensional contaminant transport through a deforming porous medium:theory and a solution for a quasi-steady-state problem[J]. International Journal for Numerical and Analytical Methods in Geo-mechanics,2000,24:693-722.
- [7] ALSHAWABKEH AKRAM N, RAHBAR NIMA SHEAHAN,THOMAS C,TANG GUOPING. Volume change effects on solute transport in clay under consolidation[C]//Advances in Geotechnical Engineering with Emphasis on Dams,Highway Materials,and Soil Improvement. Geo-Jordan:Geotechnical Pratice Publication,2004,1:105-115.
- [8]Lewis T W,Smith D W. Theoretical investigation of the effects of consolidation on contaminant transport through clay barriers[J]. International Journal for Numerical and Analytical Methods in Geomechanics,2009,(3):95-116.
- [9]王水林,冯夏庭,葛修润.考虑固结效应的溶质传输研究[J].岩土力学,2004,25(5):681-683.
- [10]张志红,李涛,赵成刚,等.考虑土体固结变形的污染物运移模型[J].岩土力学,2008,29(6):1435-1439.
- [11]马青山,骆祖江.沧州市地下水允许开采量研究[J].工程勘察,2015,43(4):49-55.
- [12]Hague R,Schmedding D W. and Freed V H. Aqueous solubility,adsorption,and vapour behaviour of polychlorinated bipherylarochor 1254[J]. J Environ Sci. Technol.,1974,8(2):139-142.
- [13]李伟,骆祖江,王琰,等.地下水渗流与溶质运移三维耦合数值模型[J].勘察科学技术,2013(5):16-21.
- [14]郭华,金浩波,骆祖江.基于地面控制的江阴市浅层地下水资源评价[J].地质学刊,2009,33(1):64-69.
- [15]陈兴贤,骆祖江,安晓宇,等.深基坑降水三维变参数非稳定渗流与地面沉降耦合模型[J].吉林大学学报(地球科学版),2013,43(5):1572-1578.
- [16]王洪涛.多孔介质污染物迁移动力学[M].北京:高等教育出版社,2008.