Scholarly record

PALEOSTRESS STUDIES BEFORE DIMENSIONAL STONE EXPLORATION

S. Omidian, B. Oskooi, S. A. Koupai

Abstract

Specific attention has been paid to methods of amelioration for exploration and increasing the efficiency due to importance of dimensional stones industry and its expanding position in non-petroleum export in Iran. Connected scientific management in this industry is essential for the growth of quality efficiency. In this study, one of the several points of view that should be entered in connected scientific management of quarry mines exploration is analyze. It is obvious that deep and lateral expansion of ruptures in the saving area have negative effects on time-saving and the forecasted costs in the project. Decision about the progressing or stopping the project, considering the characteristics of environmental tectonic analysis before the extraction processes can be made in two stages. The stages include: before the exploration and at the time of exploration. Structural analysis in the study area and reaching the attitudes of effective stresses depending on achieving the generation stress field includes the structures and microstructures caused by the effective proceeds of stress. Effective stresses induced deformation on the rock unites in brittle and also ductile situations, considering the temperature conditions, rock resistance and the time period of effect. Paleostress is using the effect of structural stresses on the rock units in the area which have been affected by the time of instability of tectonic conditions. Stria of the fault, stilolitic joints, plumose structures and considering the attitudes of beddings are the important witnesses for the analysis. The result of paleostress analysis can be used for choosing the effective direction to open the front of dimensional stone mines if it is decided to continue the operations.

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