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| DOI：10.13522/j.cnki.ggps. 2023529 |
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| Construction and Engineering Application of Reservoir 3D Model Based on Multimodal Data |
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SU Xiuyong, XIAO Benben, WEI Tiantian
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1. Power China Huadong Engineering Co., Ltd., Hangzhou 310014, China;
2. Zhejiang Huadong Mapping and Engineering Safety Technology Co., Ltd., Hangzhou 310014, China
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| Abstract: |
| 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. |
| Key words: UAV oblique photogrammetry; unmanned ship; multi-beam; multi-modal data; 3D modeling |
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