水利学报
水利學報
수리학보
2013年
7期
791-799
,共9页
袁喆%杨志勇%史晓亮%严登华
袁喆%楊誌勇%史曉亮%嚴登華
원철%양지용%사효량%엄등화
灰色模型%自记忆理论%季节/年际性指数%径流
灰色模型%自記憶理論%季節/年際性指數%徑流
회색모형%자기억이론%계절/년제성지수%경류
Grey model%self-memory theory%annual/seasonal index%runoff
在灰色微分动态模型的基础之上,采用季节/年际性指数对原始降水和实测径流进行预处理,并引入自记忆函数,构建灰色微分动态自记忆模型,将其应用于滦河流域径流过程的模拟和预测。结果表明:(1)采用预处理前的降水径流数据所构建的DHGM(2,2)模型和DHGM(2,2)自记忆模型在年尺度和月尺度上的径流模拟效果较差,难以反映径流的变化过程,对输入数据进行预处理后,构建的DHGM(2,2)自记忆模型模拟精度得到了很大的提高,三道河子站和滦县站年径流和月径流模拟序列的Nash-Sutcliffe系数和相关系数均达到了0.6以上;(2)模型在年尺度和月尺度的径流预测中具有一定的适用性,且结构简单、计算方便,但需要进一步考虑蒸发、土地利用和人类活动等因素,使模型更为完善。
在灰色微分動態模型的基礎之上,採用季節/年際性指數對原始降水和實測徑流進行預處理,併引入自記憶函數,構建灰色微分動態自記憶模型,將其應用于灤河流域徑流過程的模擬和預測。結果錶明:(1)採用預處理前的降水徑流數據所構建的DHGM(2,2)模型和DHGM(2,2)自記憶模型在年呎度和月呎度上的徑流模擬效果較差,難以反映徑流的變化過程,對輸入數據進行預處理後,構建的DHGM(2,2)自記憶模型模擬精度得到瞭很大的提高,三道河子站和灤縣站年徑流和月徑流模擬序列的Nash-Sutcliffe繫數和相關繫數均達到瞭0.6以上;(2)模型在年呎度和月呎度的徑流預測中具有一定的適用性,且結構簡單、計算方便,但需要進一步攷慮蒸髮、土地利用和人類活動等因素,使模型更為完善。
재회색미분동태모형적기출지상,채용계절/년제성지수대원시강수화실측경류진행예처리,병인입자기억함수,구건회색미분동태자기억모형,장기응용우란하류역경류과정적모의화예측。결과표명:(1)채용예처리전적강수경류수거소구건적DHGM(2,2)모형화DHGM(2,2)자기억모형재년척도화월척도상적경류모의효과교차,난이반영경류적변화과정,대수입수거진행예처리후,구건적DHGM(2,2)자기억모형모의정도득도료흔대적제고,삼도하자참화란현참년경류화월경류모의서렬적Nash-Sutcliffe계수화상관계수균체도료0.6이상;(2)모형재년척도화월척도적경류예측중구유일정적괄용성,차결구간단、계산방편,단수요진일보고필증발、토지이용화인류활동등인소,사모형경위완선。
Based on the differential hydrological grey-model, the annual/seasonal indexes were applied to data pre-processing of precipitation and runoff for establishing the Differential Hydrological Grey Self-memo-ry Model with the self-memory theory. The model was used to simulate and predict the runoff in different time scales. The results show that (a) DHGM (2, 2) and Self-memory DHGM (2, 2) which constructed by initial data cannot described the runoff processes in annual and monthly scales. With the pre-processing data of precipitation and runoff, the Self-memory DHGM (2, 2) performed better both in Shandaohezi and Luanxian discharges, and Nash-Sutcliffe and correlation coefficients reached more than 0.6;(b) the model was applicable to predicting the runoff especially on an annual time scale. The structure model was simple and easy to operate,nevertheless,the factors of evaporation,land-use and human activity should be taken into consideration so that the model can be more perfect.