The Stability of Metasedimentary Rock in Ranau, Sabah, Malaysia

Authors

  • Ismail Abd Rahim Natural Disasters Research Centre, Faculty of Science &Natural Resources,Universiti Malaysia Sabah, Jalan UMS 88400 Kota Kinabalu, Sabah, Malaysia
  • Baba Musta Natural Disasters Research Centre, Faculty of Science & Natural Resources, Universiti Malaysia Sabah, Jalan UMS, 88400 Kota Kinabalu, Sabah,, Malaysia

DOI:

https://doi.org/10.17014/ijog.5.1.23-31

Keywords:

Trusmadi Formation, Ranau, metasedimentary rock, slope stability, mode of failure

Abstract

DOI: 10.17014/ijog.5.1.23-31

The aim of this paper is to determine the stability of slopes and to propose preliminary rock cut slope protection and stabilization measures for Paleocene to Middle Eocene Trusmadi Formation along Marakau-Kigiok in Ranau, Sabah, Malaysia. The rock of Trusmadi Formation is slightly metamorphosed and dominated by interbeds of sandstone with quartz vein (metagreywacke), metamudstone, shale, slate, sheared sandstone, and mudstone. The rock unit can be divided into four geotechnical units namely arenaceous unit, argillaceous unit, interbedded unit, and sheared unit. Twelve slopes were selected for this study. Geological mapping, discontinuity survey, kinematic analysis, and prescriptive measure were used in this study. Results of this study conclude that the potential modes of failures are planar and wedge. Terrace, surface drainage, weep holes, horizontal drain, vegetation cover, wire mesh, slope reprofiling, and retaining structure were proposed protection and stabilization measures for the slopes in the studied area.

References

Hoek, E. and Bray, J.W., 1981. Rock slope engineering. 3rd ed. Institution of Mining and Metallurgy.

Hutchison, S.C., 2005. Geology of North-West Borneo (Sarawak, Brunei and Sabah). Elsevier, Amsterdam. p. 357-359. DOI: 10.1016/B978-044451998-6/50029-6

Jacobson, G., 1970. Gunung Kinabalu area, Sabah, Malaysia. Geological Survey of Malaysia, Report, 8.

Markland, J. T., 1972. A Useful technique for estimating the stability of rock slopes when the rigid wedge slide type of failure is expected. Imperial College Rock Mechanics Research reprint, 19.

Rocscience, 2003. Dips 5.1: Graphical and statistical analysis of orientation data. https://www. rocscience. com.

Sanudin, T. and Baba Musta, 2007. Pengenalan Kepada Stratigrafi. Universiti Malaysia Sabah.

Yin, E. H., 1985. Geological map of Sabah, East Malaysia. 3rd ed. 1:25000 scale, Geological Survey of Malaysia.

Yu, Y. F., Siu, C. K., and Pun, W. K., 2005. Guidelines on the use of prescriptive measures for rock cut slopes. GEO Report No. 161, Hong Kong Geotechnical Engineering Office, 31pp.

Downloads

Published

29-01-2018

How to Cite

Rahim, I. A., & Musta, B. (2018). The Stability of Metasedimentary Rock in Ranau, Sabah, Malaysia. Indonesian Journal on Geoscience, 5(1), 23–31. https://doi.org/10.17014/ijog.5.1.23-31

Issue

Vol. 5 No. 1 (2018)

Section

Articles

Citation Check

License

IJOG as the journal holds copyright of the published papers.

Most read articles by the same author(s)

Obs.: This plugin requires at least one statistics/report plugin to be enabled. If your statistics plugins provide more than one metric then please also select a main metric on the admin's site settings page and/or on the journal manager's settings pages.