Characterization and stabilization of an unstable railway cut slope in marl - A case study
Date
2007
Authors
Taheri, A.
Taheri, A.
Tani, K.
Editors
Schaefer, V.R.
Schuster, R.L.
Turner, A.K.
Schuster, R.L.
Turner, A.K.
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Conference paper
Citation
Proceedings of the 1st North American Landslide Conference, 2007 / Schaefer, V.R., Schuster, R.L., Turner, A.K. (ed./s), pp.1879-1887
Statement of Responsibility
Abbas Taheri, Ali Taheri, K. Tani
Conference Name
1st North American Landslide Conference (3 Jun 2007 - 8 Jun 2007 : Colorado, USA)
Abstract
This paper presents a study of railway cut slope instability at Northeast of Iran. In 1996 the failure occurred at eastern side of the trench, after a long raining period. The trench has been cut in marl, with a well defined weathering profile, from unweathered at depth, to fully weathered at the ground surface. In order to determine the shear strength parameters of the failed ground mass, some back analyses of the failed slope were performed, using a limit equilibrium method by means of CLARA scientific software. By this, the relationship between cohesion and friction angle and also the most probable shear strength values were found. In addition, the change of marly layer with depth was made clear. The main designed stabilization method is, to construct a number of lime columns inside the slide mass and a lime wall at the toe of the unstable slope. The desired configuration of the lime columns was determined by performing some stability analysis, using Finite Element Method by means of PLAXIS 7.2 software. These analyses demonstrate that, by constructing lime columns at 20×20 m grid, the safety factor of the unstable mass will be increased from 1.10 to 1.36 in short-term period, and to 1.50 in long-term period.
School/Discipline
Dissertation Note
Provenance
Description
Landslides and Society: Integrated Science, Engineering, Management, and Mitigation.
Conference Proceedings in published (book) form and on CD-ROM, as well as a conference program with abstracts
Access Status
Rights
© 2007