Research And Application Of Key Technologies For 3D Geographic Information System Of Liyuan Hydropower Station

With the advancement of computer and surveying and mapping technology,3D GIS is gradually applied in all walks of life with its intuitive,real,visual and spatial data and.spatial analysis ability.Construction of hydropower stations Construction of hydropower stations is often a long and complex project with many of these problems,such as the overall anticipated schedule of construction and the construction schedule,the logical relationship between the location and the construction of the buildings.The direction of the basin,the impact of flood diversion on construction is difficult to use simple table picture or simple mathematical model to represent.The three-dimensional geographic information system can provide a visual and scientific visual analysis means for the planning,design,construction and management of the hydropower station.It can help promote the intelligent and modern development of the hydropower station,and create the benefit for the society.In the application.This paper is based on the construction of the three-dimensional geographic information system of Liyuan hydropower station in Lijiang City.Based on the realization of the three-dimensional geographic information system of hydropower station,the theoretical knowledge of 3D geographic information system is expounded.On the basis of understanding the three-dimensional GIS theory,Three-dimensional modeling of the knowledge also carried out a further step to explore the field data on-site collection,and finally the construction of the surface of the hydropower station.Based on the complex and specificity of the terrain of the hydropower station,TerraBuilder is used to carry out the ground dressing of the terrain of the pear orchard hydropower station,such as the three-dimensional model and the three-dimensional terrain fit problem and the correction of the.water surface.Finally,according to the requirements of the owners to develop appropriate design technology line,and finally to Skyline-based platform to complete the three-dimensional management of the pear orchard hydropower system development.