CAJ | 학술논문

溶质运移模拟是污染风险预测的一种有效手段。本研究为查明研究区内某有机污染场地作为污染源对拟建水库的影响，基于对区内流场的精确测量，建立了准确的地下水流模型和化工厂泄露有机污染物的溶质运移模型，预测分析了研究区拟建水库修建前、后地下水流场及污染物迁移情形的变化。模拟结果表明：水库和周边两种设计水头的截渗沟建成后，改变了自然条件下的流场，形成水库向截渗沟排泄、截渗沟向周边排泄以及水库和周边区域均向截渗沟排泄两种地下水流场。某些污染羽扩散范围虽比自然条件下有所增大，但向水库方向的扩散均未超出300 m，不会对水库水质构成污染风险。
용질운이모의시오염풍험예측적일충유효수단。본연구위사명연구구내모유궤오염장지작위오염원대의건수고적영향，기우대구내류장적정학측량，건립료준학적지하수류모형화화공엄설로유궤오염물적용질운이모형，예측분석료연구구의건수고수건전、후지하수류장급오염물천이정형적변화。모의결과표명：수고화주변량충설계수두적절삼구건성후，개변료자연조건하적류장，형성수고향절삼구배설、절삼구향주변배설이급수고화주변구역균향절삼구배설량충지하수류장。모사오염우확산범위수비자연조건하유소증대，단향수고방향적확산균미초출300 m，불회대수고수질구성오염풍험。
Solute transport simulation is one of the most reliable approaches for groundwater pollution risk as-sessment.In this paper,to understand the effect to the reservoir from an organic contaminated site as the source of pollution,a precise flow simulation and a solute transport model of organic pollutant leaked from the chemical plant were built based on accurate measurement of flow field in the study area to estimate and analyze the change of groundwater flow and pollution migration after the reservoir built.The simulation results showed that,after the reservoir and two seepage intercepting ditches which had different water levels were built,groundwater flow would change to two kinds of groundwater flow fields,in one condition of which the reservoir would discharge to ditches and the ditches would discharge to vicinity area,while in the other condition the reservoir and vicinity area would both discharge to the ditches.In the two cases,some contaminant plume diffusion were farther than normal condition,but all the diffusion lengths in the direction of reservoir were less than 300 m,so it indicated that the contaminated site will pose no pollution risk to the water quality of reservoir.