人民长江2026，Vol.57Issue(3)：137-144,8.DOI:10.16232/j.cnki.1001-4179.2026.03.017
岩溶双管道-池潭结构溶质迁移规律数值模拟研究
Numerical simulation study on solute transport in Karst aquifers under combined effects of dual conduit and pool
摘要
Abstract
Breakthrough curves(BTCs)carried out in Karst aquifers often exhibit anomalous transport characteristics such as long tailing and multiple peaks.However,most existing studies have focused on the influence of single factors,making it difficult to understand BTCs with anomalous features resulting from multiple interacting factors.In this paper,two key factors—the length ra-tio of dual conduits and the pool size—were considered simultaneously.A finite element numerical simulation was employed to an-alyze the variations in peak time,peak height,tailing intensity,and peak separation under different conditions,thereby systemati-cally investigating the combined effects of these two factors on BTCs.The results indicate that under a fixed length ratio,increasing the pool size causes the dual peaks to gradually merge and may lead to a distinctive pattern in which the first peak is lower than the second.For a fixed pool size,the retention effect of the pool weakens the separation between the dual peaks.When the pool size decreases while the length ratio increases,BTCs evolve from a single peak to dual peaks,with higher peak concentrations and reduced tailing.However,simultaneous increases in both pool size and length ratio significantly reduce peak concentrations and enhance curve broadening and tailing effects.These findings not only improve the theoretical understanding of anomalous transport in Karst aquifers but also provide new insights for interpreting BTCs,which may aid in predicting contaminant migration and sup-porting groundwater resource management.关键词
岩溶含水层/溶质迁移/示踪突破曲线/反常迁移/双峰/拖尾现象Key words
Karst aquifer/solute transport/breakthrough curves(BTCs)/anomalous transport/numerical simulation/dual peaks/tailing effect分类
天文与地球科学引用本文复制引用
王亚山,王超琦,窦智,常勇..岩溶双管道-池潭结构溶质迁移规律数值模拟研究[J].人民长江,2026,57(3):137-144,8.基金项目
国家重点研发计划项目(2023YFC3209700) （2023YFC3209700）
国家自然科学基金青年基金项目(42302295) （42302295）
江苏省优秀青年基金项目(BK20240190) （BK20240190）
