人民黄河
人民黃河
인민황하
Yellow River
2015年
1期
11-14
,共4页
邹霞%宋星原%袁迪%刘佳明%张素琼
鄒霞%宋星原%袁迪%劉佳明%張素瓊
추하%송성원%원적%류가명%장소경
坡面汇流%面雨量%缺资料小流域%地貌瞬时单位线%水文预报
坡麵彙流%麵雨量%缺資料小流域%地貌瞬時單位線%水文預報
파면회류%면우량%결자료소류역%지모순시단위선%수문예보
overland flow concentration%areal precipitation%small basins lack of hydrological data%GIUH%hydrological forecasts
为使水文预报结果具有更高的精度，在地貌瞬时单位线通用公式的基础上，将面雨量的不均匀性反映到面积率上，从而对初始概率作了适当的调整。另外，考虑坡面汇流相对于河道汇流具有一定程度的滞时，将坡地作为特殊的河流引入地貌瞬时单位线，保持了地貌瞬时单位线计算结构的一致性。应用结果表明：改进的地貌瞬时单位线的平均误差为6．02％，而未改进的地貌瞬时单位线的误差为14．70％。
為使水文預報結果具有更高的精度，在地貌瞬時單位線通用公式的基礎上，將麵雨量的不均勻性反映到麵積率上，從而對初始概率作瞭適噹的調整。另外，攷慮坡麵彙流相對于河道彙流具有一定程度的滯時，將坡地作為特殊的河流引入地貌瞬時單位線，保持瞭地貌瞬時單位線計算結構的一緻性。應用結果錶明：改進的地貌瞬時單位線的平均誤差為6．02％，而未改進的地貌瞬時單位線的誤差為14．70％。
위사수문예보결과구유경고적정도，재지모순시단위선통용공식적기출상，장면우량적불균균성반영도면적솔상，종이대초시개솔작료괄당적조정。령외，고필파면회류상대우하도회류구유일정정도적체시，장파지작위특수적하류인입지모순시단위선，보지료지모순시단위선계산결구적일치성。응용결과표명：개진적지모순시단위선적평균오차위6．02％，이미개진적지모순시단위선적오차위14．70％。
In order to get higher precision of forecast results,combined with surface unevenness of areal precipitation,the initial probability was made an appropriate adjustments. At the same time,considering a certain degree of lag time compared overland flow concentration and subsurface flow concentration with channel flow concentration,the slope as a special river was introduced to geomorphological instantaneous unit,maintaining the computational structural consistency of geomorphological instantaneous unit. The application results show that the aver-age error of improved geomorphologic instantaneous unit hydrograph is 6. 02%,which is better than un-improved geomorphologic instanta-neous unit hydrograph with average error of 14. 70%.
