安全与环境工程2024，Vol.31Issue(3)：225-234,10.DOI:10.13578/j.cnki.issn.1671-1556.20230097
非均质孔隙介质径向溶质双峰反常运移数值模拟研究
Numerical simulation study on bimodal migration of heterogeneous radial solute anomaly in porous media
摘要
Abstract
To investigate the control mechanism of the heterogeneity of the porous aquifer on the solute transport near the injection well and the spatial distribution characteristics of solute plume,a three-dimen-sional radial heterogeneous stochastic model was developed by using T-PROGS(transition probability geostatistical software)based on the geostatistical data observed at the MADE site in USA.MODFLOW and MT3DMS were used to simulate solute transport in the vicinity of water injection wells,and the effects of different hydrofacies architecture on the solute transport were investigated.The results show that the phenomenon of bimodal anomalous transport can be universally observed in heterogeneous aquifers;the ra-dial solute transport is greatly affected by the deposition length and thickness of high permeability,the lar-ger the deposition length,the more obvious the bimodal phenomenon of the spatial distribution curve of solute mass,and the bimodal phenomenon is the most obvious,especially when the deposition length increa-ses to 1.75 times;there is a positive correlation between the zone of high permeability hydroface and that of the preferential flow path with high velocity.In general,the highly permeable media have strong inter-con-nectivity in the alluvial porous aquifer,leading to a preferential flow channel,which results in the formation of double peaks for the breakthrough curve due to the fast-flow and the slow-flow domains.关键词
非均质含水层/溶质运移/双峰分布/数值模拟Key words
heterogeneous aquifer/solute transport/bimodal distribution/numerical simulation分类
资源环境引用本文复制引用
左孔辉,李旭,朱棋,尹茂生,张海涛,王美悦..非均质孔隙介质径向溶质双峰反常运移数值模拟研究[J].安全与环境工程,2024,31(3):225-234,10.基金项目
国家自然科学基金项目(42102293、42272281) （42102293、42272281）
安徽省自然科学基金青年项目(2108085QD165) （2108085QD165）
安徽省高校自然科学研究重点项目(KJ2020A0316、KJ2021A0441) （KJ2020A0316、KJ2021A0441）
