推理公式法在山区小流域设计洪水计算中的应用

Application of inference formula method in mountainous small watershed design flood calculation

水库的建设和城市下垫面的变化对城区洪水过程影响较大。为此,使用推理公式法对百色市龙景新区内的水系进行设计洪水计算与复核,对推理公式法在龙景新区设计洪水成果的合理性进行了验证,并在天然设计洪水基础上对龙景水库进行了调洪演算。结果表明:推理公式法可以较好地适用该地区的设计洪水计算,并且龙景水库对下游的洪峰削减作用十分明显。

The construction of reservoir and the change of urban underlying surface have great influence on urban flood process. Inference formula method was used to calculate and recheck the design flood of the water system in Longjing New District of Baise City. The rationality of the design flood results of Longjing New District calculated by inference formula method was verified. Flood routing calculation of Longjing Reservoir was conducted on the basis of natural design flood. The results show the inference formula method is suitable for the design flood calculation in this area, and the Longjing Reservoir has obvious effect on the reduction of downstream flood peak.