- 期刊
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HEC-1洪水套裝程式檢討及修訂應用 二、模式參數推估與檢測
Discussion and Revision on the HEC-1 Flood Hydrograph Package for Applying in Taiwan 2. Estimation and Calibration of Model's Parameters
摘要
應用影響係數矩陣法與共軛方向法推衍HEC-1模式之參數，並經由本省河流之雨量及流量觀測記錄，求得各參數之最佳值。針對參數推估並檢測其是否最佳，本研究首以美國Housationic河流流域之觀測資料作系統模式參數推衍之探討，得知HEC-1模式參數中，計算損失雨量之參數最不穩定，而以STRKR及DLTKR參數爲甚。爲欲了解HEC-1模式應用於本省之適用性及如何修正，本文乃以清水溪桶頭水文站上游259.2平方公里之集水區，由民國70年至75年之水文觀測記錄中，採用6組雨量資料以爲模式參數推估之數據，並以θ表示誤差係數，視爲評估演算結果之指標。研究過程中亦同時採用Ø指數平均入滲法，替代HEC-1模式中之累積入滲曲線法，以探討Ø指數模式於本省降雨～逕流演算之適用價值。
關鍵字
無資料並列摘要
The program about the parameter estimation of HEC-1 model had been built up by taking advantages of effective coefficient matrix and conjugate direction optimization for connecting with hydrological flood routing. The optimal parameters for the hydrological routing of HEC-1 model then will be discovered by the program with the past records of rainfall and runoff. To calibrate the procedure of parameter estimation program, some data of Housationic Basin are computed, and the results are discussed. From these results, they reveal that the system parameters for calculating rain loss are more sensitive than others, especially for STRKR and DLTKR. Whether revisions are necessary when HEC-1 model is applying in Taiwan, six sets data (1981 to 1986) of TON-TOU watershed with the area of 259.2 km^2, which locate at the upstream of Ching-Shui stream, are used to study. An error coefficient θ is also defined to be an index for estimating the error variance, and for studying whether the Ø index model is better than HEC-1 model.