基于水下地形拟合的V型河道库容计算方法

发布时间：2018-06-09 00:40

本文选题：V型河道 + 库容曲线　；参考：《人民长江》2017年22期

【摘要】：水库库容决定着水库调节径流的能力和它所能提供的效益指标的大小,是水库前期论证的主要依据之一,也是水库调度运行的重要参数。在厄瓜多尔某水库规划设计中,探索在缺失水下地形数据条件下运用V型河道库容计算方法,对具备V型河谷特征的水库进行精确库容测算。该方法利用河道水上数字高程模型及相关数据来预测河道水下深度,从而在缺失河道水下地形的情况下,拟合出V型河道的整体高程模型。应用效果表明,该计算方法相较于仅通过水上地形数据得到的库容值更接近于真实值,误差在5%以内。
[Abstract]:Reservoir capacity determines the capacity of the reservoir to regulate runoff and the size of the benefit index it can provide. It is one of the main basis of the pre-reservoir argumentation and an important parameter of reservoir operation. In the planning and design of a reservoir in Ecuador, this paper probes into the accurate calculation of reservoir capacity of a reservoir with V-type river valley characteristics by using V-type river channel capacity calculation method under the condition of lack of underwater topographic data. In this method, the digital elevation model and related data are used to predict the underwater depth of the channel, so that the whole elevation model of the V-shaped channel can be fitted in the absence of the underwater topography of the channel. The application results show that the proposed method is closer to the real value than the one obtained from the topographic data on water, and the error is less than 5%.
【作者单位】：长江空间信息技术工程有限公司(武汉);
【分类号】：TV147;TV697

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