Research On Three-dimensional Dynamic Display Technology For Submarine Pipelines’ Monitoring

Submarine pipeline is one of the most important facilities for marine gas and oil exploitation. With the development of marine oil and gas resources exploitation in China, pipelines of submarine oil and gas are the significant part of oil and gas gathering, storage and transportation system. Large scales of submarine pipelines have been laid under the sea, and these pipelines can accelerate the transmission speed of the oil and gas resources, but, there are also a lot of security risks. The facture of pipeline could be caused by both the severe seabed environment or the unqualified self-factor of pipeline. When the pipeline is fractured, it will difficult to repair, and it will also bring huge cost and serious environmental pollution. Therefore, how to monitor the transportation and maintenance status of submarine pipeline effectively and ensure the safety and stable operation of submarine pipeline is very important, and it also has realistic significance.By the development of submarine pipelines’ detection technology, how to use submarine terrain data, geomorphological data, shallow strata profile data, submarine pipelines’ space location data and other relevant data, and make full use of three-dimensional visualization technology which suits submarine pipeline detection feature display and achieve the integration of submarine pipeline three-dimensional visualization dynamic display information system is a hot and difficult issue for submarine pipelines’ safety research. So it’s necessary to build a submarine pipeline three-dimensional visualization dynamic visualization information display system which based on Geographic Information System and three-dimensional technology to satisfy the information integrated application and integrated decision support management in main distribution area of pipelines and improve the risk warning ability and coping ability for submarine pipelines.This paper adopts virtual reality technology and Web Service, proposes a research and design method of submarine pipelines’ three-dimensional dynamic visualization information integrated system. Firstly, this paper uses triangle network generation algorithm and interpolation algorithm, and combine game development engine named Unity3D and geographic information system software named ArcGIS to transform the elevation coordinate data into three-dimensional virtual terrain. Then, this paper uses 3ds Max and Photoshop to make three-dimensional visualization scene models and its textures, and use Unity 3D to construct and optimize the offshore and undersea scene. Finally, this paper proposes a visualization method by using space coordinate transformation and Web Service to realize the inquiry, transmission, analysis and display of submarine pipelines’data.In addition, this paper selects a test area which is suitable for demonstration, and builds a three-dimensional visualization system for this area to test and verify the correctness of algorithm and the feasibility of design method. Then, the built system has been packed and published. Eventually, a server and a testing computer have been used to dispose and test the built system, so the reliability and response ability of system can be tested and verified.