CAJ | 학술논문

三峡水库是典型的河道型水库.动态库容较好地反映了洪水进入河道型水库后蓄水量的实际情况,是水库水量平衡计算、径流预报和水库实时调度的重要参数之一.结合GIS技术和水力学方法,本文提出一种河道型水库动态库容快速而准确的计算方法,并成功应用于三峡水库实时调度.由于三峡水库河道地形DEM数据量较大且存在较多冗余,通过采用分块、游程编码压缩和多波段集成方法存储管理空间插值方法中用到的相关参数,有效地提高了空间插值计算效率,实现了动库容的实时计算.通过运用该方法开发通用的动态库容计算软件对三峡水库动库容进行了计算,计算速度较快,计算结果误差较小,表明该方法准确有效.
삼협수고시전형적하도형수고.동태고용교호지반영료홍수진입하도형수고후축수량적실제정황,시수고수량평형계산、경류예보화수고실시조도적중요삼수지일.결합GIS기술화수역학방법,본문제출일충하도형수고동태고용쾌속이준학적계산방법,병성공응용우삼협수고실시조도.유우삼협수고하도지형DEM수거량교대차존재교다용여,통과채용분괴、유정편마압축화다파단집성방법존저관리공간삽치방법중용도적상관삼수,유효지제고료공간삽치계산효솔,실현료동고용적실시계산.통과운용해방법개발통용적동태고용계산연건대삼협수고동고용진행료계산,계산속도교쾌,계산결과오차교소,표명해방법준학유효.
The Three Gorges reservoir is the typical channel type reservoir in the Changjiang River, China. The dynamic storage can better reflect the true situation of water storage, so it' s one of the important parameters of the water balance' s calculation, runoff forecast and reservoir operation for a channel reservoir. Combining the GIS technology with the hydrodynamic method, this paper proposed a rapid and accurate computation method of the channel type reservoirs' dynamic storage. And the method has been successfully applied to the Three Gorges Reservoir real-time operation. As the reservoir topographic DEM data is usually a great data mass and redundancy, the block-based processing, run-length encoding raster data compression method and multi-bands integration method were employed to manage the parameters. The efficiency of the spatial interpolation method' s computation has been evidently improved and the rapid computation of the dynamic storage has been realized. On the basis of the method, a software system of reservoir storage calculation was developed and used to calculate the dynamic storage of the Three Gorges Reservoir. The calculation speed is very quick and the calculated result errors are very small, which indicates that the method is valid and feasible.