南水北调与水利科技
南水北調與水利科技
남수북조여수리과기
South-to-North Water Transfers and Water Science & Technology
2015年
5期
858-861,887
,共5页
南水北调中线%地下水%京石段%内排段%氨氮%水质模拟%风险预测%MIKE 11
南水北調中線%地下水%京石段%內排段%氨氮%水質模擬%風險預測%MIKE 11
남수북조중선%지하수%경석단%내배단%안담%수질모의%풍험예측%MIKE 11
the Middle Route of South-to-North Water Transfer%groundwater%Beijing-Shijiangzhuang section%internal discharge section%NH 3-N%water quality simulation%risk forecast%MIKE 11
基于 MIKE 11模型的水动力模块、对流扩散模块建立南水北调中线输水干渠水质模型，充分考虑了干渠两侧地下水内排段的影响，以京石段为干渠水质模拟示范段，针对内排段水质对干渠水质的风险特征，选取氨氮作为典型污染组分，结合实际工程设计，计算在最不利工况下的内排量，并依此设定情景模拟内排段水质对干渠水质的影响。模拟结果表明，在假定的内排段污染风险达到极大的情况下(水质处于劣Ⅴ类)，排入干渠的地下水对干渠水质基本不构成影响。
基于 MIKE 11模型的水動力模塊、對流擴散模塊建立南水北調中線輸水榦渠水質模型，充分攷慮瞭榦渠兩側地下水內排段的影響，以京石段為榦渠水質模擬示範段，針對內排段水質對榦渠水質的風險特徵，選取氨氮作為典型汙染組分，結閤實際工程設計，計算在最不利工況下的內排量，併依此設定情景模擬內排段水質對榦渠水質的影響。模擬結果錶明，在假定的內排段汙染風險達到極大的情況下(水質處于劣Ⅴ類)，排入榦渠的地下水對榦渠水質基本不構成影響。
기우 MIKE 11모형적수동력모괴、대류확산모괴건립남수북조중선수수간거수질모형，충분고필료간거량측지하수내배단적영향，이경석단위간거수질모의시범단，침대내배단수질대간거수질적풍험특정，선취안담작위전형오염조분，결합실제공정설계，계산재최불리공황하적내배량，병의차설정정경모의내배단수질대간거수질적영향。모의결과표명，재가정적내배단오염풍험체도겁대적정황하(수질처우렬Ⅴ류)，배입간거적지하수대간거수질기본불구성영향。
Guarantee of water quality in the Middle Route of South-to-North Water Transfer Project is key for successful opera-tion of the project.In this study,a coupling model integrating water quality and quantity between channel water and groundwa-ter along the channel was developed based on the hydrodynamic and advection-diffusion modules of MIKE1 1.The model consid-ered the impacts of groundwater internal discharge section along the channel and Beijing-Shijiazhuang section was selected as the simulation demonstration section.In terms of the characteristics of water quality in the internal discharge section,NH3-N was selected as the typical pollutant composition.According to the actual engineering design,water quantity of the internal discharge section was calculated under the most disadvantage working conditions,and the impacts of water quality in the internal dis-charge section on the channel were simulated using the scenario analysis.The results indicated that there is no impact on the channel water quality under the most serious scenario in which groundwater inthe internal discharge section is contaminated ver-y seriously.
