Study On Geological Information Integration Platform Based WEB SERVICES Framework

Geological information plays a fundamental role in coal mine production and safety. In response to mine geological information management and decision-making needs of coal mine production, with the main line of geological information sharing, thesis researches the geological information integration model on Web Services framework, and constructs an integration platform for complex geological information of different sources, heterogeneous and different databases.At first, thesis analyses the characteristics of geological information, as well as the needs of coal mine information integrated management, it researches taking focus on the related theories, methods and key technologies for the integration of mine geological information. Considering about the multi-sources, diversity of expression format and the spatial distribution nature of mine geological information, thesis combines open-source technology with ontology matching theory, metadata integration theory and framework integration theory, and has realized the geological information integration platform on Web Services framework.Main achievements include:(1)Thesis analyses the coexistence characteristics of structured and unstructured data geological information has, studies the integration model of meta-data, it also constructs a structured integrated management model for mine geological information. Through extracting key attributes of geological information, thesis has established Index / meta-database, using association, dependence model and ontology matching algorithms, thesis has built a theme query model of geological information.(2)To the dispersion of geological information and users, as well as the flowing direction of geological information on decision-making process of coal mine enterprises, thesis designs integration & sharing platform of geological information, the storage of index/ metadata is concentrated and source data is disperse.(3)Thesis studies the semantic consistency of meta-data, proposes the principles for establishing coal mine geological metadata, designs application example of coal mine geological information metadata based on the description metadata, maintenance metadata and application metadata types.(4)By the semantic consistency mapping technology of metadata integration theories, thesis has resolved the semantic inconsistencies of vector data, the dynamic extraction and conversion of diverse structured spatial data can be achieved. (5)Using open source components and dynamic link library such as MapServ.C, thesis has built a geological information platform model on Web Services framework by PHP and Python scripting language, and has realized the coal mine information-sharing system according with the criterions of coal mines and legend requirements.(6)Thesis adopts the XML Http Request asynchronous communication technology of Ajax, enriches the interactive function for Web users, realizes the panning, zooming in/out and customizing of vector map.