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首页> 外文期刊>Water Practice and Technology >Application of a rainfall-runoff model for regional-scale flood inundation mapping for the Langat River Basin
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Application of a rainfall-runoff model for regional-scale flood inundation mapping for the Langat River Basin

机译：降雨径流模型在兰加特河流域区域洪水淹没制图中的应用

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Rapid growth in recent decades has changed engineering concepts about the approach to controlling storm water in cities. Over the past years flood events have occurred more frequently in several countries in the tropics. In this study the behavior of Langat River in Malaysia was analyzed using the hydrodynamic modeling software (HEC-RAS) developed by the ‘Hydrologic Engineering Center, U.S. Army Corps of Engineers’, to simulate different water levels and flow rates corresponding to different return periods from the available database. The aim was to forecast peak flows, based on rainfall data and the maximum rate of precipitation in different return periods in storms of different duration. The maximum flows were obtained from the Automated Geospatial Watershed Assessment tool for the different return periods, and the peak flows from extreme rainfall were applied to HEC-RAS to simulate different water levels and flow rates corresponding to different return periods. The water level along the river and its tributaries could then be analyzed for different flow conditions.
机译：近几十年来的快速增长已经改变了有关控制城市雨水方法的工程概念。在过去的几年中，热带地区的一些国家发生洪灾的频率更高。在这项研究中，使用由“美国陆军工程兵团水力工程中心”开发的流体动力学建模软件（HEC-RAS）对马来西亚兰加特河的行为进行了分析，以模拟不同的水位和相应于返回时间的流量从可用数据库中。目的是根据降雨数据和不同持续时间的暴风雨中不同返回期的最大降水率来预测峰值流量。从自动地理空间分水岭评估工具获得了不同回水期的最大流量，并将来自极端降雨的峰值流量应用于HEC-RAS，以模拟不同回水期的不同水位和流量。然后可以针对不同的流量条件分析沿河及其支流的水位。

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