THE ABSTRACT

My task was to create a vector model of geological map, which will enable to project construction on coal territories.

Geological map of a mine territory was taken as original material. This map was scanned to get its raster picture. While studying the raster, the following objects of mining geology were distinguished.

While digitting, the legend was taken from ‘Mining graphic documentation’ ÃÎÑÒ 2.850 – ÃÎÑÒ 2.857.

The vectorized raster presents an informational model created as a sum total of informational layers on mine field’s objects.

• breach_features – class of linear objects containing geological breaches;
• bed_features – class of linear objects containing information about coal and lime beds;
• chink_features – class of spot objects containing information about wells and shafts.

Because of geological breaches, mine and lime beds have numerous breaks, so objects representing them on the map consist of numerous primitives. Every primitive has its own attributes and is a part of the object, possessing its own attributes as well.

The decision was taken to keep the objects segments as separate records in object class, and common information about the object – as records in ‘content table’.

This solution failed to be realized by standard instruments ArcMap. To fulfil it, the tables in geo-data base ArcGIS were created:

• breach_table – contains information about a kind geological breach and is a common attribute table;
• b_objects – is a ‘content table’ of breaches, which contains its names;
• bed_type – a table-classificator contains beds’ characteristics;
• bed_objects – is a ‘content table’ of coal beds which contains its names.

The connection of these tables is realized according to attributes in common. Using bussiness rules of geo-data bases, the support of base intergity was organized, which provides the cascade delete of segments while deleting records in a contant table with the help of relation’s classes: breach_objects_rel, bed_objects_rel.

Also the following tables were created:

• chink_type – contains the definition of spot, a well or a shaft;
• chink_objects – ‘content table’ including names of a well (a shaft) and its marks.

In order to put information about belonging primitive to object and attribute information into a class table, to make digitting easier and to prevent errors, macroses were created with the help of VBA language and set of COM libraries – ArcObjects.

With the help of macros from descending lists on the form of macros it is possible to choose a kind of bed and its name, those are taken from the tables bed_type and bed_objects.

So, while digitting the space primitive, it will be automatically given the identificators of type and name of the object (a bed) in a class table. The same macroses for wells and breaches are created.

Also there is a macros belonging to this object, which considerably improves visualization of digital objects, consisting of numerous primitives and enables to operate on the whole object, but not on one part of it.

All data is kept in geo-base Data. This way to keep data was chosen, as the structure of this data base corresponds to information needs of tasks realized, i. e. it is easy to extract necessary information from it by programming methods, it uses a file structure of data base Microsoft Jet Engine, which is available almost in every computer.

The prepared vector model of geological map will enable to analyze data for mining territories of Donbass in future.