engleski

Neki od najvažnijih kriterija za vrednovanje ležišta prirodnoga kamena u tijeku istraživanja

uring the exploration and determination of natural stone deposits some important criteria should be analyzed. Colour and features of ingredients define decoration criteria. The physical and mechanical properties define technical criteria. Geological criteria should be defined by geological characteristics, especially discontinuities important for determination of exploitation and stone block utilization from rock mass. Discontinuities restrict the dimension (greatness) of the exploited stone blocks. Technological criteria indicate the possibility and quality of cutting, grinding and polishing of natural stone. All the stated criteria influence the economical value of the stone. The most important step during the exploration is measuring discontinuities present in the body of the natural stone deposit. In the present study a simple mathematical model is applied for the spatial analysis of the discontinuities. The input data are α and β angle (strike and dip of discontinuities). Detailed field exploration, old and new excavation banks and core drilling are very useful for determination of discontinuity, discontinuity density and discontinuity spatial relations. The results of examination, as well as specific approach in particular deposits, should be utilized for evaluation of natural stone deposits.

natural stone ; exploration of natural stone ; utilization of stone blocks ; discontinuity spatial relations

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