洪泛区洪水演进数值模拟是风险分析与居民防洪避险等非工程措施的重要依据。
Numerical modeling of flood routing in flood area is important basis of non-engineering measure, such as analysis of flood risk, people's escaping from risk of flood and so on.
提出了洪水演进计算中“干湿”边界的处理方法，较好地解决了动边界模拟问题。
A good method of dealing with wet and dry boundary in calculation is given in the article, so the movable boundary simulation problem is solved successfully.
运用改进的分蓄洪区平面二维水流数学模型计算了湖北省白谭湖分蓄洪区洪水演进的情况。
The flood routing in the flood diversion area of Baitan Lake, in Hubei Province, is calculated by the developed plane 2-d water mathematical model for flood diversion area.
应用到大洪水年份河段洪水演进中，显著地提高了洪水过程特别是最高洪水位的拟合精度。
When applied to flood routing for the river reach in large water years the curve obviously improves the simulated flood processes especially the result of the highest water stage.
采用水动力学方法建立河道型水库库区洪水演进模型，解决实时洪水调度中的动库容问题。
A flood routing model for river-type reservoirs was developed to calculate the dynamic reservoir capacity during the real-time flood regulation based on the hydrodynamic method.
在抽象世界里构建模型，用矩阵标识法求解，实现了流域洪水演进模拟，算法具有通用性。
The model constructed in the abstract world and the use of the matrix mark method to solve equations make it possible to realize flood routing and simulation, and the algorithm is universal.
将水库的三维模型导入虚拟地球，根据大坝溃决数据信息制作了大坝溃决以及洪水演进的模拟动画。
After the 3d model of reservoir imported into Google Earth, the animation of dam break and flood discharging is made according to the data and information of dam break.
水力学模型是平原区洪水演进、流域防洪调度、兴利除害、技术治水、科学管水合理利用的重要工具。
Hydrodynamic model is important tools of river flood routing and flood control, promote the beneficial and abolish the harmful, technically water control and scientific water manage.
根据该系统的特点，将模型分解为三峡库区和坝址至湖口两大子系统，采用水文学方法进行洪水演进计算。
The system is decoupled into two subsystems, namely the upper dam site subsystem and the dam site Hukou subsystem, according to its nature. The flood routing is carried out with hydrology methods.
在处理洪水演进过程中支流与干流洪水的相互影响时，以前的模型仅将支流流量迭加到干流同时刻的流量上。
When dealing with the relationship between tributary and main channel during flood routing, the general method is to add the discharge of tributary to that of main channel of the same instant.
本文在分析现行河道断面形态及洪水演进特点基础上，结合近期实体模型试验成果，探讨了黄河下游防洪形势的调整变化。
The new flood characteristics is discussed in this paper based on the analysis of the existing river bed variation and the physical model test results.
计算结果均表明，本文的一维水动力学模型能较好地模拟漫滩河道的过流特征，并改善了漫滩河道洪水演进的模拟与预测能力。
Calculation results show that this model can simulate the characteristics of water flow in a floodplain river and can improve the capacity of flood routing simulating and predicting.
洪水演进仿真环境的绘制包括三维地形建模和地形地貌实时绘制，源发型洪水演进动态仿真技术的关键是流域河道边界自搜索模型的建立。
The key technology of the dynamic simulate of the original flood evolvement is the design of the self-control search model of the boundary of the watercourses drainage area.
因此，研究堤防溃决之后洪水在城区内的演进规律具有重要的现实意义。
Therefore, it is of great significance to study the routing characteristics of flood caused by levee breach.
洪水资源利用的关键在于了解洪水的发生过程及其运动规律，再现洪水的演进状态。
The key of the utilization of flood resource is to know flood occurrence course and movement rule, and flood routing state can be reappeared.
生产堤的存在改变了洪水正常的演进规律；
The production levee changes the natural law of flood evolution.
空间查询技术在矢量要素叠加和洪水模拟演进方面的可视化应用。
The visual application of spatial query technique in the field of vector elements overlapping and the simulative evolution of flood.
有些用于参加集体行动的内生方法经过了几个世纪的演进，经历了洪水、火灾、虫害、人口过剩以及战乱等的考验。
Indigenous methods for engaging in collective action have sometimes survived for centuries, through floods, fires, pests, overpopulation, and warfare.
有时，河系上游产生的山洪随着其他支流来水的陆续汇集，可演变成为一个比较和缓的河道洪水，向下游演进。
Sometimes, a flash flood in the upper reaches of a river system can evolve into a more general river flood as it joins with other inflows and spreads out as it travels downstream.
有时，河系上游产生的山洪随着其他支流来水的陆续汇集，可演变成为一个比较和缓的河道洪水，向下游演进。
Sometimes, a flash flood in the upper reaches of a river system can evolve into a more general river flood as it joins with other inflows and spreads out as it travels downstream.
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