CAJ | 학술논문

采用衡水地下水科学试验场浅层钻孔土样进行室内一维土柱渗流试验，并用地球化学模拟方法探讨黏性土对咸水迁移转化的控制机理。结果表明：黏性土对咸水迁移有一定的阻隔作用，1号土柱对Na＋的阻滞作用以吸附为主，2号土柱对Na＋的阻滞作用由吸附和阳离子交换共同影响；1号和2号土柱的阻盐率分别为49.8％和54.5％；1号和2号土柱中黏性土的阻滞因子R1和R2分别为1.54和3.78；咸水迁移过程中，控制水岩相互作用的主要因素是岩盐的沉淀，石膏、方解石的溶解，Mg2＋、Ca2＋与Na＋之间的离子交换。
채용형수지하수과학시험장천층찬공토양진행실내일유토주삼류시험，병용지구화학모의방법탐토점성토대함수천이전화적공제궤리。결과표명：점성토대함수천이유일정적조격작용，1호토주대Na＋적조체작용이흡부위주，2호토주대Na＋적조체작용유흡부화양리자교환공동영향；1호화2호토주적조염솔분별위49.8％화54.5％；1호화2호토주중점성토적조체인자R1화R2분별위1.54화3.78；함수천이과정중，공제수암상호작용적주요인소시암염적침정，석고、방해석적용해，Mg2＋、Ca2＋여Na＋지간적리자교환。
we took an indoor one-dimensional soil column seepage experiment based on the soil sample in the shallow layer drilling of Hengshui groundwater science test field, and tried to probe the control mechanism of cohesive soil to saltwater migration and transformation by means of geochemical simulation.The results show that the cohesive soil has some barrier effects on the salt water migration;the blocking effect of soil column No.1 on the Na+is dominated by adsorption, while that of soil column No.2 on the Na+is mutual influenced by adsorption and cation exchange.The salt rejection rates of soil column No.1 and No.2, R1 and R2, are 49.8% and 54.5%respectively.The retardation factors of two soils columns are 1.54 and 3.78 respectively; In the process of salt water migration, the main factors to control water-rock interaction are salt precipitation, the dissolution of gypsum and calcite, and the ion-exchange among Mg2+, Ca2+and Na+.