Due to the capability for simulating dam-break and predicting flood hydrograph, a dam-break model is of tremendous importance to the disaster control and reduction.
溃坝模型可以模拟溃坝过程，预测溃坝洪水过程线，对防灾减灾有着重要意义。
The Alekceef's method is a main method to calculate flood hydrograph in the medium and small project planning and designing.
“阿氏法”是中小型工程规划设计中洪水过程线计算的主要方法。
The difference is obvious between the computed flood hydrograph according to the traditional method and observed flood hydrograph, especially flood peak.
目前常用矩法估计瞬时单位线，据此还原的洪水过程与实测洪水过程之间，特别是洪峰点之间，常具有明显的差别。
The flood characteristic of the main stream of Songhua river is that the flood is mainly from Nenjiang river, the flood hydrograph is gently, the time of propagation of flood peak is longer.
松花江干流洪水特征是：洪水主要来自嫩江，洪水过程平缓，洪峰持续时间长。
The total flood volume is reduced, the flood duration is prolonged, the peak flow is decreased dramatically, and the flood hydrograph is characterized by the rapid rise and mitigatory recession;
洪水总量减少，洪水历时延长，洪峰流量显著降低，洪水过程线表现为涨洪陡、落洪慢的特点；
The total flood volume is reduced, the flood duration is prolonged, the peak flow is decreased dramatically, and the flood hydrograph is characterized by the rapid rise and mitigatory recession;
洪水总量减少，洪水历时延长，洪峰流量显著降低，洪水过程线表现为涨洪陡、落洪慢的特点；
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