摘要
传统GIS在实现溃坝洪水过程模拟时通常是采用无源淹没分析或有源淹没分析方法,这些方法忽略了洪水演进过程中的物理学与动力学因素,模拟结果的时效性、可靠性较差,表达效果也较为简单。针对此问题,该文提出结合光滑粒子流体动力学方法与GIS相关技术实现溃坝洪水演进的三维动态可视化及分析,以光滑粒子流体动力学生成的海量多维时空序列流体粒子数据为基础,研究了粒子数据的建模及时空数据的时空建模技术。最后在自主研发的系统中实现了溃坝洪水演进的三维动态可视化表达及分析,应用效果良好。
Normally traditional GIS uses non-source flood or source flood in fulfilling the dam-break flood process simulation, these methods ignore the physics and dynamics factors in the process of flood routing, the simulation results of timeliness and reliability are poor, also the effect of expression is relatively simple. Aiming at this problem, the 3D dynamic visualization and analysis of dam-break flood routing was realized combining with the smooth particle hydrodynamics （SPH） method and GIS technology in this paper, the particle data modeling and spatio-temporal modeling technology were researched based on the huge amounts of multidimensional spatio-temporal sequence of fluid particles generated by smooth particle hydrodynamics. Finally, the 3D dynamic visualization and analysis of dam-break flood routing were realized in the independent development of the system, and the application effect was good.
出处
《测绘科学》
CSCD
北大核心
2016年第10期115-119,148,共6页
Science of Surveying and Mapping
基金
国际科技合作项目(2011DFG23330)
国家科技支撑项目(2012BAH28B01)
国家自然科学基金项目(41271394)
