基于地理信息系统技术的GIUH通用公式的应用

Application of GIUH general expressions based on GIS Technique

简介地貌瞬时单位线(GIUH)的发展以及GIUA的通用公式.采用地理信息系统(GIS)技术从数字高程模型(DEM)中分析和提取了Horton地貌率等地貌参数.以龙岩市桃源溪麦园水文站和雁石溪龙门水文站控制流域为例,利用GIUH通用公式对多场历史洪水进行模拟计算.计算结果表明,洪峰值和峰现时间与实测值相符.

A brief introduction was given to the development of geomorphic instantaneous unit hydrograph (GIUH) and its general expressions. By use of GIS technique, geomorphic parameters, such as the Horton geomorphic ratio, were extracted from DEM. With the controlled regions of Maiyuan hydrological station and Longmen hydrological station taken as examples, GIUH general expressions were used for simulation of a number of historical floods. The calculated results of the flood peak and its occurring time are in accordance with the measured data.