Abstract
Identify the characterization and orientation of the discontinuities such as joint, bedding and fault is a requirement in rock slope stability analysis because discontinuities control the type of failure. Until today, geologist still practices the classical method to determine the dip and strike of discontinuities which is by using Brunton compass at the field. It is difficult to measure at the inaccessible area, dangerous when having physical contact with the steep, fractured slope and time consuming to cover a large area are limitations of this method. A recent development in remote sensing has introduced Terrestrial Laser Scanner (TLS) as an indirect method in mapping the rock slopes by using the point cloud data. TLS allows for extremely rapid acquisition of large amounts of 3D coordinates of objects’ surfaces, with high precision measurement. The aim of this paper is to apply Terrestrial Laser Scanner (TLS) in determine the dip and strikes of the joints and compare the value with the hand measurement at a granite quarry in Ulu Choh, Johor. Analysis of the data shows the TLS method able to obtain the data for the joints and show almost the same trend. Thus, TLS is an efficient technology in geological practice.
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