Research On Data Management Of Geological Disposal Of High Level Radioactive Waste

With the rapid development of the nuclear industry,industrial development has been driven.At the same time,high radioactive source of waste has come into being.In China,high-level radioactive waste was carry on deep geological disposal.A lot of complex,diverse,heterogeneous data has been involved when in geological disposal.Such as geological data,environmental data,engineering data,material data,physics data,chemistry data,biology data and so on that from different disciplines,different types and different sources.Those data can be sorted into structured data,semi structured data and unstructured data.In order to manage these data by computer technology,at first,those data need to be analyzed and processed;then,combined with the data's structured and unstructured features,collaborative use of relational database and non-relational database management technology,the analyzed and processed data can be put into the related database management system.For the non-relational database,the traditional relational database's SQL statement cannot be used to query the data,needed to combine with the characteristics of unstructured data,using similarity retrieval technology to query the unstructured data.In the process of high-level radioactive waste's geological disposal,the data include many features,such as complex,diverse,professional,unique data structure,data attribute information with the disposal time may change and so on.It makes the traditional relational database difficult to adapt to the expansion of the data field attribute.After the analysis of the structured data and unstructured data,using JavaWeb technology,Struts2 framework,jQueryEasyUI framework,Oracle11 g database,according to users' actual needs,users' professional characteristics,the process of the geological disposal,combined with the general method of software development(requirement analysis,outline design,detailed design,system encoding implementation and test,all four stages),developing the high level radioactive waste disposal safety evaluation information management system under the mode of B/S.The system is divided into six functional modules according to the characteristics of geological disposal processes: the data management module of source,the data management module of packaging container,the data management module of buffer/backfill material layer,the data management module of rock layer,the data management module of biosphere,the data management module of the list of foreign FEPs.