无资料地区设计洪水计算成果合理性探析

Exploration on the Rationality of Design Flood Calculation in the Non-data Area

无资料地区设计洪水计算,由于缺乏水文实测资料,成果准确性难以保证。以蓝田县汤峪河流域为例,通过对小流域典型设计洪水流量推求,采用地区经验公式、推理公式等传统计算方法和基于高精度的DEM的分布式水文模型计算方法,对计算成果进行相互对比、与设计流域已有成果和相似流域进行对比、与新方法计算结果进行对比,综合分析其合理性。进而对无资料地区设计洪水计算成果合理性分析及新方法未来发展领域进行探析。

For the design flood calculation in the non-data area, due to the lack of hydrological data, the results of the accuracy is often difficult to guarantee. Taking the Tangyu River Basin in Lantian County as an example, the traditional calculation method of regional empirical formula and reasoning formula and the distributed hydrological model calculation method based on high precision DEM are used to calculate the typical design flood flow in small watershed. Contrast, compared with the results of the design watershed and similar watershed, compared with the new method to calculate the rationality. And then analyzes the rationality of the calculation results of the design of the non - data area and the future development of the new method.