The Slope Assessment Using Geophysical Approaches With Integrated Analysis Of 2-D Cross Plot Model

Inadequate resolution with limitation of the methods vulnerable for misinterpretations as characterisation of landslide required a wide range of data and observations. Validation from different parameters necessary to substantiate the result as to reduce erroneous during interpretations. Integrated...

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Main Author:	Zakaria, Muhammad Taqiuddin
Format:	Thesis
Language:	English
Published:	2021
Subjects:	QC1 Physics (General)
Online Access:	http://eprints.usm.my/52177/1/MUHAMMAD%20TAQIUDDIN%20BIN%20ZAKARIA.pdf
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spelling	my-usm-ep.521772022-04-05T00:03:12Z The Slope Assessment Using Geophysical Approaches With Integrated Analysis Of 2-D Cross Plot Model 2021-04 Zakaria, Muhammad Taqiuddin QC1 Physics (General) Inadequate resolution with limitation of the methods vulnerable for misinterpretations as characterisation of landslide required a wide range of data and observations. Validation from different parameters necessary to substantiate the result as to reduce erroneous during interpretations. Integrated cross-plot analysis was introduced as an alternative method to enhance the subsurface interpretations based on the models' criteria. Geophysical methods of 2-D resistivity, seismic refraction, and MASW was utilized to characterize the landslide behaviour with supported data from geotechnical and hydrological parameters. Three types of slope conditions were selected, which are the stable slope (USM Archaeology–USM), the critical slope (Lojing–LJ), and the failure slope (Hulu Yam–HY & Bkt Antarabangsa–BA). USM represent the stable slope condition where cohesive soil were identified at resistivity, ρ=400-1000 Ωm and velocity, Vp=800-1800 m/s; Vs= 250-350 m/s at a depth of 5-10 m. Elastic modulus shows the strength of soil with low moduli (Go<0.1 GPa; E<0.25 GPa; ν = 0.05-0.45) with a depth of <5 m. The elastic modulus increases with the depth as shear strength parameters show high range values (c'=5-29 kPa; ϕ'= 21-28.8°). In critical slope (LJ), the residual soil was identified as unconsolidated/weathered material with resistivity, ρ=200-450 Ωm) and velocity, Vp=400-600 m/s; Vs= 150-200 m/s at depth of <5 m. The low values of the moduli (Go<0.1 GPa; E<0.25 GPa; ν= 0.35-0.45) at a depth of <5 m attributed to soil weathering with reducing shear strength parameters. The failure slope of HY and BA shows a highly weathered zone (ρ<1200 Ωm; Vp<1200 m/s) was identified with a depth of <5 m. 2021-04 Thesis http://eprints.usm.my/52177/ http://eprints.usm.my/52177/1/MUHAMMAD%20TAQIUDDIN%20BIN%20ZAKARIA.pdf application/pdf en public phd doctoral Perpustakaan Hamzah Sendut Pusat Pengajian Sains Fizik
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	QC1 Physics (General)
spellingShingle	QC1 Physics (General) Zakaria, Muhammad Taqiuddin The Slope Assessment Using Geophysical Approaches With Integrated Analysis Of 2-D Cross Plot Model
description	Inadequate resolution with limitation of the methods vulnerable for misinterpretations as characterisation of landslide required a wide range of data and observations. Validation from different parameters necessary to substantiate the result as to reduce erroneous during interpretations. Integrated cross-plot analysis was introduced as an alternative method to enhance the subsurface interpretations based on the models' criteria. Geophysical methods of 2-D resistivity, seismic refraction, and MASW was utilized to characterize the landslide behaviour with supported data from geotechnical and hydrological parameters. Three types of slope conditions were selected, which are the stable slope (USM Archaeology–USM), the critical slope (Lojing–LJ), and the failure slope (Hulu Yam–HY & Bkt Antarabangsa–BA). USM represent the stable slope condition where cohesive soil were identified at resistivity, ρ=400-1000 Ωm and velocity, Vp=800-1800 m/s; Vs= 250-350 m/s at a depth of 5-10 m. Elastic modulus shows the strength of soil with low moduli (Go<0.1 GPa; E<0.25 GPa; ν = 0.05-0.45) with a depth of <5 m. The elastic modulus increases with the depth as shear strength parameters show high range values (c'=5-29 kPa; ϕ'= 21-28.8°). In critical slope (LJ), the residual soil was identified as unconsolidated/weathered material with resistivity, ρ=200-450 Ωm) and velocity, Vp=400-600 m/s; Vs= 150-200 m/s at depth of <5 m. The low values of the moduli (Go<0.1 GPa; E<0.25 GPa; ν= 0.35-0.45) at a depth of <5 m attributed to soil weathering with reducing shear strength parameters. The failure slope of HY and BA shows a highly weathered zone (ρ<1200 Ωm; Vp<1200 m/s) was identified with a depth of <5 m.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Zakaria, Muhammad Taqiuddin
author_facet	Zakaria, Muhammad Taqiuddin
author_sort	Zakaria, Muhammad Taqiuddin
title	The Slope Assessment Using Geophysical Approaches With Integrated Analysis Of 2-D Cross Plot Model
title_short	The Slope Assessment Using Geophysical Approaches With Integrated Analysis Of 2-D Cross Plot Model
title_full	The Slope Assessment Using Geophysical Approaches With Integrated Analysis Of 2-D Cross Plot Model
title_fullStr	The Slope Assessment Using Geophysical Approaches With Integrated Analysis Of 2-D Cross Plot Model
title_full_unstemmed	The Slope Assessment Using Geophysical Approaches With Integrated Analysis Of 2-D Cross Plot Model
title_sort	slope assessment using geophysical approaches with integrated analysis of 2-d cross plot model
granting_institution	Perpustakaan Hamzah Sendut
granting_department	Pusat Pengajian Sains Fizik
publishDate	2021
url	http://eprints.usm.my/52177/1/MUHAMMAD%20TAQIUDDIN%20BIN%20ZAKARIA.pdf
_version_	1747822140996976640

The Slope Assessment Using Geophysical Approaches With Integrated Analysis Of 2-D Cross Plot Model

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