| With the progress of the times and the rapid development of network visualization technology,the demand for the visualization modeling of the underground spatial data of the slope and the visualization of the three-dimensional(3D)real scene on the ground is increasingly strong.In the process of the construction and maintenance of the slope engineering,remote data sharing,data management,data editing and data preservation are required.With the continuous development of computer Cesium open source platform,as well as the in-depth research on 3D spatial data management and Web side visualization theory technology,it has provided us with the technical conditions for rapidly establishing the 3D solid model of overground and underground "integrated" slope.When a large slope project is in danger,it is necessary to quickly use a small amount of geological data to build a 3D geological entity model and visually display it on the Web,so as to make a reasonable response to the slope management project.Therefore,this article through studies Wa Chang Ping Ya Xi highway slope deformation,Slope 1,Xuecheng,Shenzhen Tianxin Stone Field slope,slope in underground three-dimensional geological entity model and the ground quickly build three-dimensional imaging model and the ground slope underground "integration" 3D visualization display has made some beneficial discussion.The main work and research results of this paper are as follows:(1)By analyzing the research status and significance of 3D geological body modeling technology,3D geological body modeling software and 3D visualization display system,the importance of constructing an "integrated" 3D surface slope visualization display system is determined,so as to clarify the main research contents and methods of this paper.(2)To study the theory and method of three-dimensional overground and underground "integration" slope modeling and its application in practical engineering,mainly including the following three points:(1)Analyze the basic theory and method of rapid construction of 3D real landscape of overground slope,mainly the basic theory and method of building 3D real landscape model with uav tilt photography technology,and elaborate the specific steps and advantages of rapid modeling technology with uav tilt photography.(2)Analyze the theory and method of rapid modeling of underground 3D slope,mainly is the processing of geological data,spatial data model theory,interpolation fitting method,Itas CAD rapid modeling of 3D geological entity and other theories,and focus on the analysis of the construction of the above ground and underground 3D model of the key technology.(3)Combined with the basic theory of above-ground and underground modeling,for slope engineering,the method of above-ground and underground rapid modeling was adopted to carry out practical application in engineering.Finally,Itas CAD,EVS and GOCAD were used to build 3D solid model and analyze key modeling technologies.(4)Compare and analyze the advantages of the three modeling software,specifically analyze how to quickly achieve the underground three-dimensional geological entity modeling,and put forward a set of specific geological data according to the rich degree of rapid modeling program.(3)Research and development of above-ground and underground "integrated" 3D slope visualization system,mainly including the following three points:(1)Develop visual display system based on Cesium 3D earth open source platform,introduce the platform architecture foundation of the system in detail,including the key technologies and framework of the platform,environmental architecture,etc.In addition,the format conversion technology of 3D overground model and underground model of slope is introduced in detail.(2)Through the overall design of the system and functional requirements analysis,determine the system architecture,data management means,data function realization method.Realized the multidimensional earth 3D visualization and the underground spatial data integration,and through specific engineering examples,the unmanned aerial vehicle(uav)elaborating the ground tilt photography to create 3D model of real loaded into the visualization system,and then quickly build slope underground threedimensional geological entity model loading visualization system,finally realizes the floor underground "integration" of 3D visualization of slope comprehensive display.(3)Based on Cesium open source platform for secondary development and construction of slope visualization system on the basis of Nginx,IIS server based network release,through the front-end application packaging and release,back-end application release,Web visual browsing and display.The online geological body information management platform is developed to realize the functions of project information,detailed geological body information management and query,and finally realize the visualization of 3D geological entity,borehole and core information visualization and section visualization,so as to carry out practical application test for specific projects. |
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