基于DWSM的流域水沙模拟计算系统的构建与应用

采用模块化开发方法构建基于分布式水文模型DWSM的流域水沙模拟计算系统,用以研究宁夏和内蒙黄河段(下河沿至头道拐)流域的产流产沙情况及水沙输移规律。该系统主要针对黄河上游宁蒙河段及其相关流域,借助DWSM模型在流域计算模拟方面的优点,系统集成数据库模块、河网提取模块、DWSM伺服模块、DWSM模型模块以及水文成果对比与显示模块等主要功能模块并调节计算参数。在介绍系统框架结构、模型原理和计算流程的基础上,采用宁蒙河段的实测资料对其进行应用验证。计算分析结果表明,所构建的宁蒙黄河流域水沙模拟计算系统在该区域具有较好的适用性。

Computational system of water and sediment simulation based on DWSM

A distributed hydrological model system,DWSM,is used to simulate runoff and sediment yield on Yellow River Basin from Xiaheyan in Ningxia to Toudaoguai in Neimenggu.The system integrates main function modules and adjusts the calculation parameters.Based on the system introduction of the frame structure,model principle and modeling processes,some observed data of Ningxia-Neimenggu Reach are used to the application inspection of the digital river basin system.The modeling results show that the constructed modeling system of flow and sediment to the Yellow River in Ningxia and Neimenggu is suitable.