Thesis for a master's degree Drobotuschenko A.

Drobotuschenko A. The analysis of stress - strain state of rock massif

during mining. - Manuscript.

Thesis for a master's degree in the specialty 8.05030101 - Mining and

extraction of minerals. - National Technical University of Ukraine "Kyiv Polytechnic

Institute", Kyiv, 2016.

This research focuses on the analysis of changes and stress - strain state of rock

massif during mining.investigated that change was the stress state of the rock mass in the production

of monolithic blocks may cause adverse effects in the formation of structural and

strength properties of natural stone;

the dependence changes the stress state of the array after separation unit and

the formation of new free surfaces through which redistribution of stresses.

proved that the largest concentration of stress occurs in the corner area. At the

corner of extraction of natural stone blocks 90 mentioned tension in the corner area

increased by 915 times compared to the stresses at the top of the side surfaces. To

remove the block 80 angle value tension in the corner area increased by 730 times

compared to the stresses at the top of the side surfaces. From the results of the

experiment shows that the stresses in the corner area decreased by about 20% when

removing the block at an angle of 80 compared to removing the block at an angle of

90.

Keywords: block, stress - strained state, hills, mining blocks fractures.

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