Research On 3D Visualization System Of Underground Pipeline Based On Skyline

Underground pipeline is an important part of urban infrastructure,it occupies in the city planning,construction,management can not be ignored.Through the study of the current situation of underground pipeline system construction,although most cities have completed the construction of pipeline information management system,but most of them are mainly 2d scene,3d scene effect is poor and spatial analysis is weak.The pipeline information is not shared between management department.To solve the above problems,based on the Skyline platform with B/S architecture of underground pipeline 3D visualization system research.It uses the C#and JavaScript language,with 3d scene building,pipeline model parametric production and spatial analysis function as the research target.3D scene construction combines the Skyline with oblique photography to realize the aboveground buildings and underground pipelines are displayed together.Aiming at the shortage of traditional pipeline modeling methods,a new method of 3d pipeline model produced based on the Skyline is proposed,which will combined with the 3D Max custom model unit.That is the complex model created the pipe unit manually in advance.The simple model is automatically created according to the spatial topological relation.This method makes the pipeline model production efficient.By increasing the distance rules and the depth rules database in space analysis to achieve the check against the standard pipeline.Using DEM meshing algorithm to improve earthwork calculation accuracy.Using polygon approximation ball algorithm to construction of 3D point,line and polygon buffer.Using the depth-first search algorithm to find the relevant facilities to prevent the accident expanding in the shortest possible time.The underground pipeline 3D visualization system can more scientifically and accurately describe the spatial position of the underground pipeline.The spatial analysis function of the system provides auxiliary decision support for underground pipeline management and significantly improves the comprehensive management level of the city.