水利水运工程学报
水利水運工程學報
수이수운공정학보
HYDRO-SCIENCE AND ENGINEERING
2001年
1期
30-37
,共8页
韩曾萃%符宁平%徐有成
韓曾萃%符寧平%徐有成
한증췌%부저평%서유성
河口河相关系%径流%潮流输沙%人类活动影响
河口河相關繫%徑流%潮流輸沙%人類活動影響
하구하상관계%경류%조류수사%인류활동영향
运用10余条入海河口的资料建立以落潮流量为自变量的河口经验河相关系.但因落潮流量是与河宽、断面面积有关的非独立自变量,基于涨、落潮(包括径流)的输沙平衡概念,得出了在平衡条件下河口沿程各断面落潮流量与径流及其潮流历时的关系式,从而使非独立自变量成为独立自变量,便于分析和预测人类活动对河口的影响.据此,对浙江省几条河流河口的现状及人类活动(引水、建水库、挡潮闸)后,河口淤积的实际资料进行了验证,其平均误差为15%.
運用10餘條入海河口的資料建立以落潮流量為自變量的河口經驗河相關繫.但因落潮流量是與河寬、斷麵麵積有關的非獨立自變量,基于漲、落潮(包括徑流)的輸沙平衡概唸,得齣瞭在平衡條件下河口沿程各斷麵落潮流量與徑流及其潮流歷時的關繫式,從而使非獨立自變量成為獨立自變量,便于分析和預測人類活動對河口的影響.據此,對浙江省幾條河流河口的現狀及人類活動(引水、建水庫、擋潮閘)後,河口淤積的實際資料進行瞭驗證,其平均誤差為15%.
운용10여조입해하구적자료건립이락조류량위자변량적하구경험하상관계.단인락조류량시여하관、단면면적유관적비독립자변량,기우창、락조(포괄경류)적수사평형개념,득출료재평형조건하하구연정각단면락조류량여경류급기조류력시적관계식,종이사비독립자변량성위독립자변량,편우분석화예측인류활동대하구적영향.거차,대절강성궤조하류하구적현상급인류활동(인수、건수고、당조갑)후,하구어적적실제자료진행료험증,기평균오차위15%.
An empirical relationship, taking discharge of ebb tide as avariable, is developed by using the field hydrograph data of ten estuaries, while the discharge of ebb tide is not an independent variable which varies with the width and area of the estuary. Based on the equilibrium concept of sediment transport of flood and ebb tide, the discharge of ebb tide can be written as a function of annual runoff and ebb tide duration, so it becomes an independent variable, favourable to the analysis and forecast of impacts of human activities. According to it, the data verification of several existing estuaries in Zhejiang Province and impacts of human activities (water diversion, and construction of reservoir and tidal barrag) is carried out and the average error is 15%.