Forensic assessment on near surface landslide using electrical resistivity imaging (ERI) at Kenyir lake area in Terengganu, Malaysia

Electrical resistivity method which was championed by geophysicist has increasingly popular in civil engineering application due to its efficiency in term of cost, time and data coverage. In the past, conventional forensic assessment related to the landslide has experienced several limitations due t...

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Main Authors:	Mohd Hazreek, Zainal Abidin, Aziman, Madun, Saiful Azhar, Ahmad Tajudin, Mohd Fakhrurrazi, Ishak
Format:	Article
Language:	English
Published:	Elsevier Ltd 2017
Subjects:	TA Engineering (General). Civil engineering (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/20672/ http://umpir.ump.edu.my/id/eprint/20672/ http://umpir.ump.edu.my/id/eprint/20672/7/Forensic%20Assessment%20on%20Near%20Surface%20Landslide.pdf

id	ump-20672
recordtype	eprints
spelling	ump-206722018-08-06T03:42:57Z http://umpir.ump.edu.my/id/eprint/20672/ Forensic assessment on near surface landslide using electrical resistivity imaging (ERI) at Kenyir lake area in Terengganu, Malaysia Mohd Hazreek, Zainal Abidin Aziman, Madun Saiful Azhar, Ahmad Tajudin Mohd Fakhrurrazi, Ishak TA Engineering (General). Civil engineering (General) Electrical resistivity method which was championed by geophysicist has increasingly popular in civil engineering application due to its efficiency in term of cost, time and data coverage. In the past, conventional forensic assessment related to the landslide has experienced several limitations due to expensive, time consuming and limited data coverage. Hence, this study performed an alternative technique with particular reference to electrical resistivity imaging (ERI) in evaluating the slope failure at Kenyir Lake, Malaysia. During the data acquisition, two lines of ERI was performed using ABEM Terrameter LS set of equipment based on Schlumberger array. According to the ERI results produced, it was found that the subsurface profiles consist of completely weathered to highly weathered material (1 – 150 ohm.m), highly weathered to moderately weathered material (150 – 300 ohm.m), moderately weathered to hard material (300 – 2400 ohm.m) and fresh, hard and dry material (>2400 ohm.m). Moreover, electrical resistivity anomaly was managed to detect the presence of geological structure with particular reference to fault and rock discontinuities which associated to low resistivity anomaly. The heterogeneous of the subsurface material presented using integrated analysis of ERI and borehole data enabled forensic assessment of the landslide to be evaluated. The combination of heavy rainfall and existing geological structure (weakness zone) was believed to be a major factor which triggered this slope to be failed. This result was applicable to assist the geotechnical engineer in design concept recommendation of the slope remediation with fast, less cost and wide data coverage. Finally, ERI results with borehole verification was applicable to be adopted in landslide forensic assessment based on slope geomaterials stiffness variations generated after the slope movement. Furthermore, this electrical resistivity method adopts a surface technique that can minimize the disruption and damage to the site thus preserving a sustainable environment during the site data acquisition assessment. Elsevier Ltd 2017-12 Article PeerReviewed pdf en cc_by_nc_nd http://umpir.ump.edu.my/id/eprint/20672/7/Forensic%20Assessment%20on%20Near%20Surface%20Landslide.pdf Mohd Hazreek, Zainal Abidin and Aziman, Madun and Saiful Azhar, Ahmad Tajudin and Mohd Fakhrurrazi, Ishak (2017) Forensic assessment on near surface landslide using electrical resistivity imaging (ERI) at Kenyir lake area in Terengganu, Malaysia. Procedia Engineering, 171. pp. 434-444. ISSN 1877-7058 https://doi.org/10.1016/j.proeng.2017.01.354
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TA Engineering (General). Civil engineering (General)
spellingShingle	TA Engineering (General). Civil engineering (General) Mohd Hazreek, Zainal Abidin Aziman, Madun Saiful Azhar, Ahmad Tajudin Mohd Fakhrurrazi, Ishak Forensic assessment on near surface landslide using electrical resistivity imaging (ERI) at Kenyir lake area in Terengganu, Malaysia
description	Electrical resistivity method which was championed by geophysicist has increasingly popular in civil engineering application due to its efficiency in term of cost, time and data coverage. In the past, conventional forensic assessment related to the landslide has experienced several limitations due to expensive, time consuming and limited data coverage. Hence, this study performed an alternative technique with particular reference to electrical resistivity imaging (ERI) in evaluating the slope failure at Kenyir Lake, Malaysia. During the data acquisition, two lines of ERI was performed using ABEM Terrameter LS set of equipment based on Schlumberger array. According to the ERI results produced, it was found that the subsurface profiles consist of completely weathered to highly weathered material (1 – 150 ohm.m), highly weathered to moderately weathered material (150 – 300 ohm.m), moderately weathered to hard material (300 – 2400 ohm.m) and fresh, hard and dry material (>2400 ohm.m). Moreover, electrical resistivity anomaly was managed to detect the presence of geological structure with particular reference to fault and rock discontinuities which associated to low resistivity anomaly. The heterogeneous of the subsurface material presented using integrated analysis of ERI and borehole data enabled forensic assessment of the landslide to be evaluated. The combination of heavy rainfall and existing geological structure (weakness zone) was believed to be a major factor which triggered this slope to be failed. This result was applicable to assist the geotechnical engineer in design concept recommendation of the slope remediation with fast, less cost and wide data coverage. Finally, ERI results with borehole verification was applicable to be adopted in landslide forensic assessment based on slope geomaterials stiffness variations generated after the slope movement. Furthermore, this electrical resistivity method adopts a surface technique that can minimize the disruption and damage to the site thus preserving a sustainable environment during the site data acquisition assessment.
format	Article
author	Mohd Hazreek, Zainal Abidin Aziman, Madun Saiful Azhar, Ahmad Tajudin Mohd Fakhrurrazi, Ishak
author_facet	Mohd Hazreek, Zainal Abidin Aziman, Madun Saiful Azhar, Ahmad Tajudin Mohd Fakhrurrazi, Ishak
author_sort	Mohd Hazreek, Zainal Abidin
title	Forensic assessment on near surface landslide using electrical resistivity imaging (ERI) at Kenyir lake area in Terengganu, Malaysia
title_short	Forensic assessment on near surface landslide using electrical resistivity imaging (ERI) at Kenyir lake area in Terengganu, Malaysia
title_full	Forensic assessment on near surface landslide using electrical resistivity imaging (ERI) at Kenyir lake area in Terengganu, Malaysia
title_fullStr	Forensic assessment on near surface landslide using electrical resistivity imaging (ERI) at Kenyir lake area in Terengganu, Malaysia
title_full_unstemmed	Forensic assessment on near surface landslide using electrical resistivity imaging (ERI) at Kenyir lake area in Terengganu, Malaysia
title_sort	forensic assessment on near surface landslide using electrical resistivity imaging (eri) at kenyir lake area in terengganu, malaysia
publisher	Elsevier Ltd
publishDate	2017
url	http://umpir.ump.edu.my/id/eprint/20672/ http://umpir.ump.edu.my/id/eprint/20672/ http://umpir.ump.edu.my/id/eprint/20672/7/Forensic%20Assessment%20on%20Near%20Surface%20Landslide.pdf
first_indexed	2023-09-18T22:29:57Z
last_indexed	2023-09-18T22:29:57Z
_version_	1777416218959937536

Forensic assessment on near surface landslide using electrical resistivity imaging (ERI) at Kenyir lake area in Terengganu, Malaysia

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