Universiti Teknologi Malaysia Institutional Repository

Slope stability analysis using remote sensing data

Omar, Hamdan and Ibrahim, Abd. Latif and Hashim, Mazlan (2007) Slope stability analysis using remote sensing data. In: The 28th Asian Conference on Remote Sensing 2007, 12-16 November 2007, PWTC, Kuala Lumpur, Malaysia.

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Abstract

Analysis of slope stability is carried out to minimise the occurrences of slope failure or landslide. Slope along the highway which have been experiencing deep excavations are very susceptible to slope failure and thus landslide. The highway engineers must therefore give serious considerations before any construction or development is executed to ensure the designed slopes remain stable. Slope failure can be determined through appropriate measurement of slope stability. In this research, remote sensing approach is used to determine the safety factors of the highway slopes stability. Multispectral Landsat TM and Radarsat SAR data are utilized to derive several crucial factors involved in the determination of slope stability. Factors such as soil cohesion (c), internal friction angle (ø), and soil unit weight (γ) are determined through correlations with soil moisture (ω) derived from Landsat TM data. Another important parameter, the slope angle (α) is derived from Digital Elevation Model (DEM) generated from stereo Radarsat SAR data. The calculation of factor of safety (FS) is based on infinite slope stability models for shallow landslide, considering common unsaturated residual soil conditions in Malaysia. Slopes stability is presented in terms of susceptibility map along the whole stretch of Kuala Lumpur-Karak Highway, with 1: 100 000 mapping scale.

Item Type:Conference or Workshop Item (Poster)
Uncontrolled Keywords:slope stability, remote sensing, factor of safety, KL-Karak Highway
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Geoinformation Science And Engineering (Formerly known)
ID Code:4798
Deposited By: En. Tajul Ariffin Musa
Deposited On:02 Jan 2008 04:28
Last Modified:10 May 2011 05:50

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