基于倾斜摄影测量技术的变电站土方量计算研究

An UAV-Borne Photogrammetric Approach for Earthwork Volumetric Estimation in Transformer Substation Engineering

无人机倾斜摄影具有机动灵活、高效快速、精细准确、作业成本低、适用范围广、生产周期短等特点。随着无人机的普及,倾斜摄影测量理论的成熟,三维设计开始逐渐取代基于传统地形图的二维设计。本文结合福建省某500 kV变电站工程,从数据获取、模型建立、土方设计三个阶段,研究了无人机倾斜摄影模型在变电站土方量设计中的应用。通过研究发现,三维设计有着高效率、高精度、成果直观等二维设计所不可比拟的优势。

The oblique photogrammetry system integrated on the UAV platform is characteristic of flexibility and low operating cost.It has been widely utilized among various applications which obtained high accuracy,efficiency,and low operating cost.The development of UAV hardware as well as oblique photogrammetry techniques triggered the evolution in engineering design.The traditional 2D design from topographic maps is incrementally replaced by 3D design on the basis of 3D topographic products.In this paper,we propose a new approach for earthwork volumetric estimation using UAV-based photogrammetry.It mainly contains three steps:data acquisition,3D modeling and earthwork estimation.A case study of a transform substation has been applied to demonstrate the effectiveness and accuracy of our method.The result shows that,comparing with the traditional 2D method,the 3D products from UAV based photogrammetric system can provide both higher accuracy estimation and high-quality visualization.