Abstract
Research focuses on patterns of change in the dimension stone commodity blocks quality production at a previous identification and measurement of natural cracks geometrical parameters, modelling and planning out the final dimension stone products and finished products based on the proposed digital photogrammetric techniques. Optimal parameters of surveying are investigated and influence of surveying distance to length and cracks area determination accuracy is estimated. Rational technological parameters of dimension stone blocks production are considered.
Highlights
The main problem which dimension stone mining enterprises in the Ukraine are facing is an introduction into the production of new technologies, international standardization and certi¿cation of dimension stone block production of granite, labradorite, gabbro and other natural stone deposit types
Analysis of the obtained graphic dependences has allowed to establish that the minimum value of mean square error of the length of the cracks is achieved at horizontal angles in the range of 400-500, vertical – 300400
Complex Niblack-Canny shows a close relationship between the reference and calculated values of fracture, this method is chosen as the main algorithm for crack recognition by the author’s patented software “Crack Detector”
Summary
The main problem which dimension stone mining enterprises in the Ukraine are facing is an introduction into the production of new technologies, international standardization and certi¿cation of dimension stone block production of granite, labradorite, gabbro and other natural stone deposit types. The researchers showed that in addition to qualitative and quantitative losses, there are commercial losses, i.e. stone loss from inaccuracy in commodity block commercial size and volume de¿nition. The reason for such losses is the lack of an accepted standardized way to measure geometric dimensions of commodity blocks and a signi¿cant error in measurements by traditional means. The study of cracks is the basis for quality commodity products control for stone mining enterprises. In articles (Deliormanli et al, 2014; Sonmez et al, 2004; Yavuz et al, 2005; Reid and Harrison, 2000) the procedure of processing rocky surface digital images for separate crack identi¿cation is investigated. Mining operation planning methods on a quarry were investigated on the basis of digital image analysis
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