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Determination of the rock mass characteristics and support systems of the new Ulus Tunnel, Ankara
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Date
2008
Author
Aksular, Irem
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The New Ulus Tunnel will be constructed within the andesitic terrain at Hıdırlıktepe (Ankara). Excavation of the tunnel will be accomplished through blast and drill method. Emprical methods will be consulted during the design of the support systems as well as the slope of the portal rock face. Therefore it is essential to perform detailed rock mass characterization studies. In this thesis it is aimed to determine the rock mass characteristics in order to design the rock slope of the portals and to assess the reliable support systems for the tunnel. For this purpose laboratory tests and field investigations were conducted. Field investigations involved detailed discontinuity measurements and borehole drillings. In respect of laboratory tests; point load index, unit weight and uniaxial compression strength tests were used. The field and laboratory test results were utilized in the Rock Mass Classification Systems (RMR, Q-system) in order to ascertain the rock mass characteristics. By all accounts, necessary tunnel support systems were determined. As for the portal areas, the rock face design was accomplished through kinematical analyses. Consequently, no failure is expected at the portal rock slopes.
Subject Keywords
Geological engineering.
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http://etd.lib.metu.edu.tr/upload/12610304/index.pdf
https://hdl.handle.net/11511/18370
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Graduate School of Natural and Applied Sciences, Thesis
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I. Aksular, “Determination of the rock mass characteristics and support systems of the new Ulus Tunnel, Ankara,” M.S. - Master of Science, Middle East Technical University, 2008.
