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...

Full description

Saved in:
Bibliographic Details
Main Author: Zakaria, Muhammad Taqiuddin
Format: Thesis
Language:English
Published: 2021
Subjects:
Online Access:http://eprints.usm.my/52177/1/MUHAMMAD%20TAQIUDDIN%20BIN%20ZAKARIA.pdf
Tags: Add Tag
No Tags, Be the first to tag this record!
id my-usm-ep.52177
record_format uketd_dc
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