基于多模态数据的水库三维模型构建与工程应用

Construction and Engineering Application of Reservoir 3D Model Based on Multimodal Data

针对库区早期单一测绘产品,已无法满足水库精细化管理这一问题,本文提出利用无人机倾斜摄影、无人船多波束测量技术分别获取库岸、水下海量数据,经过空三解算、匀光匀色、各项改正等一系列处理后,构建库岸、水下三维模型的方法,并通过图新地球软件一体化展示,供用户使用。以陈蔡水库为例,阐述了库岸、水域数据采集与处理的方法与特点,以及三维建模的流程。所构建的模型直观形象、系统全面地反映库区地物、地貌信息,既能应用于库区淹没范围计算、库容复核、库底坡度计算、泥沙淤积分析、绘制库区地形图等,也为后期库区运维管理系统、数字孪生库区建设提供了足够精准的时空数据。

The early single surveying and mapping products in the reservoir area can not longer satisfy the fine management of the reservoir,this paper proposes to use the oblique photography of the UAV and the multi-beam measurement technology of the unmanned ship to obtain massive data of the reservoir bank and underwater respectively.After a series of processing such as aerial triangulation,uniform light and color,and various corrections,the method of a three-dimensional model of the reservoir bank and underwater was constructed,and integratively displayed through the LocaSpace Viewer for users to use.Taking the 3D modeling of Chencai Reservoir as an example,the methods and characteristics of data collection and processing of reservoir bank and water area,as well as the process of 3D modeling were expounded.The constructed model intuitively and systematically reflects the ground objects and geomorphological information of the reservoir area.It can be applied to the calculation of the submerged area of the reservoir area,the review of the storage capacity,the calculation of the slope of the reservoir bottom,the analysis of sediment deposition,and the drawing of the topographic map of the reservoir area.