In recent years there have been many casualties due to mining accidents in our country and there have been searches and anticipations for new developments in mining and tunnel construction sector. With the emergence of new developments, it is possible to secure the expected precision of tunnel projects in a short time, at low cost and high quality. From past to present day, ground support materials have affected the orientation of the mining and tunneling sector. One of the materials that have recently been used for various purposes in the mining and tunneling sector is steel. Steel is higher in strength than wood and can be shaped according to various mechanisms and can be used undisturbed under a load of these mechanisms.
The profile recently used in steel support systems is Toussaint-Heitzmann (TH). The TH profile reveals that the cold deformation processes affecting the service life of the ground supports can be achieved with controlled and efficient process designs. In this study, S480W material TH34 profiles obtained by the hot rolling method are designed by using finite element method for bending and shaping processes according to gallery sections for use in mining and tunneling sector. Prototype production was carried out with the results obtained. According to the reference gallery arc gauge, the bending surfaces of the profile produced prototype were examined by using non-destructive inspection methods and crack formation due to plastic deformation was not found. According to the results obtained, it has been determined that the most efficient process design for cold plastic deformation (bending) of steel ground supports is carried out.
Primary Language | Turkish |
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Journal Section | Articles |
Authors | |
Publication Date | March 31, 2019 |
Published in Issue | Year 2019 Volume: 34 Issue: 1 |