Bore Information Management And The Method Improvement Of Auto-Generating Histogram

The bore histogram is basic plot in the mineral resources exploration report and the engineering geology report , which reflects stratums'vertical distribution and lithology combination with multifarious lithology pattern symbols and characters. Applying the bore histogram to analyse the geological environment, metallogenic regularity, stratums and lithology is key means .They have important meaning for project's programming, design and construction.The traditional methods of drawing histograms are handwork or AutoCAD drawing by geologist according to the bore information .Although in recent years there were a lot based on the secondary development of AutoCAD and MapGIS software and plug-ins of the histogram mapping ,most have some shortcomings ,such as lack of standardized , taking too much time and hard sledding ,degree of automation too low ,general considered too small ,data management too weak .So it is necessary to develop auto-generating bore histogram system with the techniques developing of computer .The paper summarizes non-metallic, metals ,coal and engineering investigation bored column types from the practical application . Based on analyzing drilling data and data requirement, the drilling database is designed to manage geology data by Visual C + + 6.0 development tool for the front , SQL Server 2000 database for the background and the latest technology of ADO database to connect and visit database, which advances efficiency of data using . On one hand, this thesis writer had designed dialog of the bore histogram database management to manage bore histogram according to types ,it is convenient for modifying , adding and deleting ;on another hand establish a complete database of lithology symbols ,designed a dialog of symbols management and can be modified , added , according to actual needs , which has strong expansion. At the same time , the common auto-generating bore histogram software is developed with the Object-oriented programming technique. The system suffices the need of base elements drawing, also includes the histogram for attribute editing , graphics operation and printing out the map . Based on the analysis of drilling data and stratums'distribution , the mapping rules of the histogram are designed in detail, graph models are drawn, and the detailed flow analysis of stratification, the method for words'auto-newline and dynamic penetration curve, data accuracy to finish a Windows-based complete histogram mapping system for the geologist . Being validated by practical engineering geology data of Tongling(Anhui), the software system runs steadily and generates plot rapidly, the result is exact, generating histograms and profiles are slinky and concordant.