三维地面模型在大藤峡静态库容计算中的应用

Application of the Three-dimensional Terrestrial Model on Calculating the Still Storage of Dateng Gorge

常规库容计算工作量大,耗费大量人工,且成果质量和计算精度都难以保证。本文简述了在广西大藤峡库容计算工作中,以AutoCAD Civil 3D为平台,根据测绘地形数据,构造三维地面模型,采用三维地面模型计算技术,短时间高质量完成计算任务的技术路线和实施方案,并且描述了利用河道横断面、深泓线、水边线加密计算水下模拟地形,从而提高了成果质量,使成果更完整。

The workload of Conventional reservoir storage calculating is heavy,manpower-consuming,make it difficult to ensure quality and calculation accuracy of the results.During calculating reservoir storage of the Dateng gorge in Guangxi province,This paper summarized how to accomplish the calculating task high-quality in a short time.It built a platform of AutoCadCivil3D,and construct the three-dimensional ground model according to the mapping data of,using the 3-d model computing technology to calculate the reservoir storage.This paper also described the method to calculate the underwater simulated terrain using encrypting the watercourse cross section,talweg and water edge.It thereby improved the quality of results and made the outcomes more completed.