基于GIS的航道整治决策支持系统

开发了内河航道GIS,通过实测地形资料生成航道数字高程、水深、冲淤量等表面模型,借助GIS工具显示并分析航道信息,可以模拟设置丁坝、顺坝等航道整治工程,为水流泥沙数学模型提供计算边界并生成计算网格。能够利用数学模型计算整治工程对流场及航道演变的影响情况,可视化显示计算结果,以便于分析工程整治效果,优化航道整治工程设计方案,为航道管理部门提供决策信息支持。本系统已经在赣江航道整治工程管理、辅助设计等方面得到初步应用,提高工作效率4倍以上。

GIS-based decision-making support system for navigation channel regulation

The GIS for inland navigation channels was developed, and the terrain models of digital elevation, water depth, and quantity of erosion and deposition were generated based on measured data. With GIS tools, the information of navigation charnels could be analyzed, and some navigation channel regulation projects, such as spur dikes and parallel dikes, could be simulated, The above work may provide computational boundaries for water-sediment mathematical model and is helpful to generate computational meshes. Furthermore, by use of the mathematical model, the effects of regulation projects on the evolution of flow fields and navigation channels could be calculated, and the visualized result can offer inanagement departments with deeision- making information support to analyze the effects of regulation projects and to optimize design schemes. The system has been applied to management and aided design of Ganjiang navigation channel regulation project, and it has improved the work efficiency for more than 4 times.