摘要
传统的洪水模拟需要工程河段的实测河道地形或断面资料,消耗大量人力、物力。无实测地形资料情况下对工程河段设计洪水进行模拟计算,是工程设计需解决的关键技术问题之一。将HEC-GeoRAS模型应用到白龙江鸭浮岩河段,利用实测地形数据和30 m分辨率DEM数据分别建模,对比两种方法的计算结果。结果表明:基于30 m分辨率DEM数据的HEC-GeoRAS模拟结果与根据实测地形资料计算的结果相差较小(百年一遇洪水平均水位误差在0.3 m以内,平均流速误差在0.6 m/s以内),这一误差对于水位、流速变幅较大的山区河流工程可以接受,为无实测地形山区河段洪水模拟提供了一种新思路。
Traditional flood simulation requires the measured river terrain or large section data of the reach, which demands a lot of time and money. Therefore,how to conduct the fast simulation into design flood is one of the key technical problems in engineering design while there is no measured river terrain.Through using HEC-GeoRAS model to help to simulate the flood of Yafuyan reach of Bailong River, that is, model- ing respectively using the measured terrain data and the 30 m DEM data.The result shows that the two completions based on the measured ter-rain data and the 30 m DEM data are close, which provides a new method to the flood simulation of the non-observed terrain reach.
出处
《人民黄河》
CAS
北大核心
2017年第5期41-44,共4页
Yellow River
作者简介
王森（1991-）,男,河南焦作人,硕士研究生,研究方向为水力学及河流动力学.
通信作者：黄尔（1972-）,男,四川营山人,研究员,研究方向为河流泥沙工程.E-mail：huang_er@scu.edu.cn
