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Pre-historic Failure in Relation to Recent Slope Stability: A Case Study at km 71.83 East-West Highway, Gerik, Malaysia

Abstract - A 40m slope, striking to ENE-WSW shows a creeping phenomenon, where the tensional cracks are observed everywhere on the slope face. It is in the unstable condition of the rock masses, showing very loose material and easy to fall off even with a small scale excavation or removal of materia...

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Main Author: Abd Kadir, Askury
Format: Conference or Workshop Item
Published: 2009
Subjects:
QE Geology
Online Access:http://eprints.utp.edu.my/5551/1/SEIT_2009_EW_Highway.pdf
http://eprints.utp.edu.my/5551/
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spelling my.utp.eprints.55512017-03-20T08:12:52Z Pre-historic Failure in Relation to Recent Slope Stability: A Case Study at km 71.83 East-West Highway, Gerik, Malaysia Abd Kadir, Askury QE Geology Abstract - A 40m slope, striking to ENE-WSW shows a creeping phenomenon, where the tensional cracks are observed everywhere on the slope face. It is in the unstable condition of the rock masses, showing very loose material and easy to fall off even with a small scale excavation or removal of material. The chaotic rock masses condition with the mixture of rocks and soils indicate the slope has previously failed by the rotational slide, and keeps moving as creep. This slope is underlain by the Ordovician-Silurian quartz-mica schist intruded by the Triassic microdiorite. The rock masses are generally brittle with four sets of prominent joints, and sometimes are exhibited fault plane shown by slickensided surfaces. The structural analysis uses stereographic projection to identify the possible failure mode on the rock slope, and obtained a toppling failure to the North. The rock mass was quantitatively rated within Class III-IV (poor to very poor rock) with the cohesion strength 100-200kPa and friction angle at 15-25o based on RMR classification. It presumed that the slope condition is at tensional mode with residual shear strength. Therefore, a detail geological investigation needs to be performed to identify the geological history of the area for cost effectiveness on slope protection and mitigation measures. 2009-07-08 Conference or Workshop Item NonPeerReviewed application/pdf http://eprints.utp.edu.my/5551/1/SEIT_2009_EW_Highway.pdf Abd Kadir, Askury (2009) Pre-historic Failure in Relation to Recent Slope Stability: A Case Study at km 71.83 East-West Highway, Gerik, Malaysia. In: Seminar of Engineering & Information Technology, 8 - 9 July 2009, Universiti Malaysia Sabah. http://eprints.utp.edu.my/5551/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
topic QE Geology
spellingShingle QE Geology
Abd Kadir, Askury
Pre-historic Failure in Relation to Recent Slope Stability: A Case Study at km 71.83 East-West Highway, Gerik, Malaysia
description Abstract - A 40m slope, striking to ENE-WSW shows a creeping phenomenon, where the tensional cracks are observed everywhere on the slope face. It is in the unstable condition of the rock masses, showing very loose material and easy to fall off even with a small scale excavation or removal of material. The chaotic rock masses condition with the mixture of rocks and soils indicate the slope has previously failed by the rotational slide, and keeps moving as creep. This slope is underlain by the Ordovician-Silurian quartz-mica schist intruded by the Triassic microdiorite. The rock masses are generally brittle with four sets of prominent joints, and sometimes are exhibited fault plane shown by slickensided surfaces. The structural analysis uses stereographic projection to identify the possible failure mode on the rock slope, and obtained a toppling failure to the North. The rock mass was quantitatively rated within Class III-IV (poor to very poor rock) with the cohesion strength 100-200kPa and friction angle at 15-25o based on RMR classification. It presumed that the slope condition is at tensional mode with residual shear strength. Therefore, a detail geological investigation needs to be performed to identify the geological history of the area for cost effectiveness on slope protection and mitigation measures.
format Conference or Workshop Item
author Abd Kadir, Askury
author_facet Abd Kadir, Askury
author_sort Abd Kadir, Askury
title Pre-historic Failure in Relation to Recent Slope Stability: A Case Study at km 71.83 East-West Highway, Gerik, Malaysia
title_short Pre-historic Failure in Relation to Recent Slope Stability: A Case Study at km 71.83 East-West Highway, Gerik, Malaysia
title_full Pre-historic Failure in Relation to Recent Slope Stability: A Case Study at km 71.83 East-West Highway, Gerik, Malaysia
title_fullStr Pre-historic Failure in Relation to Recent Slope Stability: A Case Study at km 71.83 East-West Highway, Gerik, Malaysia
title_full_unstemmed Pre-historic Failure in Relation to Recent Slope Stability: A Case Study at km 71.83 East-West Highway, Gerik, Malaysia
title_sort pre-historic failure in relation to recent slope stability: a case study at km 71.83 east-west highway, gerik, malaysia
publishDate 2009
url http://eprints.utp.edu.my/5551/1/SEIT_2009_EW_Highway.pdf
http://eprints.utp.edu.my/5551/
_version_ 1738655414534275072
score 13.211869

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