The Method Research Of Auto-Generating Engineering Geology Histogram And Profile Based On MapGIS

Engineering geology histograms and profiles are basic plot in the engineering geology report. They express stratums' lithology and lithology characters, and intuitionisticly reflect stratums' lithology combination and variational direction with multifarious symbols, curves and characters. They have important meaning for project's programming, design and construction. The method of drawing engineering geology histograms and profiles by hand transited to computer assist cartography gradually, because it not only takes too much time and hard sledding, but also the plot isn't slinky and exact. At present, we use CAD technology to draw engineering geology histograms and profiles mainly. So, the software of engineering geology histograms and profiles are coded by the programming language based on CAD. Though automatization degree was advanced, it lacks the GIS functions. GIS was applied, on one hand, we can use GIS' connatural character and make engineering geology histograms and profiles according to stratum's distributing rule in room fleetly and conveniently, on the other hand, thanks to GIS, software system has particular predominance in plot and property. Based on analyzing stratum's distributing rule in vertical direction and data requirement, this thesis writer had designed geology database to manage geology data. The database advanced efficiency of data using and is convenient for inputting, adding, deleting, modifying and querying data. MapGIS is the modules' secondary exploitation platform and Borland C++ Builder 6.0 is the modules' programming language. The modules transfer MapGIS' secondary exploitation components directly and let GIS software accomplish GIS' functions. So, we needn't exploit GIS' basical functions. Thanks to above, programming exploitation's difficulty was depressed. At the same time, based on analyzing stratums' distributing rule in vertical direction, the writer summed up stratum's combination style, customized profile drawing rule, designed programming arithmetic modules, analyzed flow detailed and written engineering geology histograms and profiles' auto-generating modules. Being validated by practical engineering geology data of Xi Ning, the software system runs steadily and generates plot rapidly, the result is exact, generating histograms and profiles are slinky and concordant.