CAJ | 학술논문

为能够实时、量化研究地下水补给对河流水质扩散的影响，论文以某平原河流为研究对象，在地下水线源补给假定的基础上，通过基流分割方法对河流总流量进行了分割，借用 MIKE11 AD对流扩散模块，分别建立了不考虑地下水补给作用的传统数值模型和加入分割后流量的新数值模型。通过分析河道沿程各点时间上的水质浓度变化过程，量化研究了两模型的差异及其产生原因。结果表明：在上游各点，两模型浓度曲线增长过程吻合度较高，但最终稳定值存在3％的差异；在下游各点，新模型浓度快速衰减，两模型浓度稀释差异巨大，可达到1000倍。由此得出结论，是否将河流流量进行分割研究对于河流水质扩散结果影响较大，这种影响会随地下水的沿程补给长度增加而快速变大。
위능구실시、양화연구지하수보급대하류수질확산적영향，논문이모평원하류위연구대상，재지하수선원보급가정적기출상，통과기류분할방법대하류총류량진행료분할，차용 MIKE11 AD대류확산모괴，분별건립료불고필지하수보급작용적전통수치모형화가입분할후류량적신수치모형。통과분석하도연정각점시간상적수질농도변화과정，양화연구료량모형적차이급기산생원인。결과표명：재상유각점，량모형농도곡선증장과정문합도교고，단최종은정치존재3％적차이；재하유각점，신모형농도쾌속쇠감，량모형농도희석차이거대，가체도1000배。유차득출결론，시부장하류류량진행분할연구대우하류수질확산결과영향교대，저충영향회수지하수적연정보급장도증가이쾌속변대。
In order to timely and quantively research the effect of groundwater recharge on river concen-tration diffusion ,taking a plain river as study object ,the paper cut apart the total flow of river by base flow separation method based on the suppose of line source supply .It built a traditional model which didn't consider the effect of groundwater recharge and a new model after the total flow was separated by the aid of AD module of MIKE 11 .Through the analysis of the process of concentration diffusion in some points of the river on time ,it researched the difference between two models and its cause in quantity .The results demonstrated that the difference of steady value of upstream concentration curve in two models is 3%,the growth process has higher anastomosis .The downstream concentration decays quickly in new model .The difference of concentration between two models is huge and reaches 1000 times.It has a huge impact on the result of river quality diffusion whether the river flow is studied in splitting .The impact can quickly become large with the increase of distance of groundwater recharge .