WebGL-based 3D Pipeline Key Technology Visualization Method

Urban underground pipelines play a very important role in the urban infrastructure and are regarded as the bloodline of the city.In recent years,with the advancement of urbanization,the number of urban underground pipelines has increased dramatically,and the spatial structure has become increasingly complex.This has brought about hidden safety problems and difficulties in maintenance and management.It is no longer possible to rely solely on traditional pipeline data management methods based on two-dimensional maps.To meet the needs of current urban management,it is urgent to introduce three-dimensional GIS technology to manage pipeline data.With the development of Web2.0 technology,network 3D pipeline management provides a new solution for pipeline management because of its strong sharing and wider application scope.The main research contents of this paper are as follows: 1.It expounds the practical significance of the three-dimensional pipeline visualization under the research network environment,and summarizes the research status of the threedimensional pipeline visualization at home and abroad;2.Introduced the technical foundation of WebGL and provided the theoretical basis for the organization,management and scheduling methods of subsequent pipeline data;3.According to the classification and spatial distribution of three-dimensional pipeline data,pipeline models with multiple levels of detail are constructed,and a three-dimensional pipeline data efficient organization method based on MongoDB and R-tree indexes for network visualization is proposed;4.This paper designs a scene data organization method of browser client,and proposes a dynamic scheduling method of pipeline data oriented to network environment and a lightweight visualization method of 3D pipeline data based on WebGL technology.In the end,this paper introduces the realization of a 3D pipeline management prototype system based on WebGL technology.The experiment is carried out with Jinhua 3D pipeline data as an example,which verifies the effectiveness and feasibility of this method.