Research On 3D Model Construction Technology Of Reservoir Dam Safety Monitoring Based On Semantic Information Fusion

Dam safety monitoring project is an important building monitoring project in China and the construction technology research has made a breakthrough lately.At the same time,the exploration of intelligent water conservancy information technology also has great development prospects.The rich semantic information of BIM(building information modeling)technology modeling can transfer and guide the construction information in the whole life cycle of the project,and IFC(industry foundation classes),as a general BIM data exchange standard,builds a bridge for multi-source BIM model information exchange.However,the general standard class is still unable to express the complete semantics of the components of the thematic domain class,which also leads to the problems of semantic information loss and semantic expression imperfection in the fusion of BIM model in 3D scene.Therefore,this paper poses the research of 3D model construction technology of reservoir dam safety monitoring semantic information fusion research-based,aiming to provide a feasible scheme for 3D model fusion method in dam safety monitoring special field.As an important hydraulic structure in dam safety monitoring engineering,reservoir dam has distinct characteristics and complex structure.In this paper,the reservoir dam BIM is taken as an example to design the research scheme.Firstly,the model of dam BIM is analyzed,and the characteristics of the model architecture and the types of thematic components are analyzed,and the component library of dam safety monitoring thematic domain is established.Secondly,the framework of thematic knowledge model is designed,the semantic expression of thematic component class is enriched by using the semantic reasoning rules proposed in this paper,and the semantic mapping method is optimized to complete the auxiliary expression of thematic knowledge model to IFC model Using citygml The extended semantic model of dam safety monitoring is designed based on ade mechanism,and the semantic model of dam process is constructed based on the dynamic event driven of dam safety monitoring,and the dynamic three-dimensional model architecture design is completed.At the same time,the object-oriented technology is combined with Postgre SQL relational database,and the object relational mapping rules are introduced based on Hibernate framework to realize the lightweight management of data,and the number of extended semantic models is completed Finally,this paper builds a 3D visualization platform for dam safety monitoring,and analyzes the practical application case of the proposed 3D model construction method for reservoir dam safety monitoring.By focusing on the transmission of semantic information,this paper provides a solution to the problem of 3D model fusion for dam safety monitoring digital engineering,standardizes the semantic expression of thematic component class in the process of model fusion,reduces the loss of semantic information,and realizes the information management and visual analysis of special Bim in 3D scene.