Abstract:
Based on Geographic Information System(GIS) technology and distributed hydrological model, a computational system of debris-flow watershed is designed and implemented. With data such as rainfall, elevation and slope introduced, the system simulates rainfall-runoff and rainfall-sediment of the watershed to calculate runoff, sediment yield and sediment concentration automatically for each day.The system is applied to Jiangjia Valley, a debris-flow basin of Yunnan Province. Calculated result agrees well with the measured sediment concentration, which shows that the system has high reliability and applicability.
Key words:
Geographic Information System(GIS),
spatial data,
debris-flow,
distributed hydrological model
摘要: 基于GIS技术与分布式水文模型,设计并实现泥石流流域分布式水文计算系统。以流域降雨、高程、坡度等数据为输入,对泥石流流域的降雨产流、产沙进行模拟,自动批量计算指定时间段内每日流域出口清水流量、泥沙流量以及流水含沙量。将系统应用到云南蒋家沟泥石流流域中,计算得到的高含沙水流含沙量与实测的含沙量数据误差很小,表明系统具有较高的精度和适用性。
关键词:
地理信息系统,
空间数据,
泥石流,
分布式水文模型
CLC Number:
YANG Yu; GUAN Qun; HU Kai-heng; LI Hong-lei. GIS-based Distributed Hydrological Computational System of Debris-flow Watershed[J]. Computer Engineering, 2010, 36(5): 260-262,.
杨 宇;管 群;胡凯衡;李洪雷. 基于GIS的泥石流流域分布式水文计算系统[J]. 计算机工程, 2010, 36(5): 260-262,.