Open AccessApplication of Photogrammetric Technique in Determination of Rock Slope Stability of Quarry
Author(s) -
Afiqah Ismail,
Ahmad Safuan A. Rashid,
Radzuan Sa’ari,
Abd Wahid Rasib
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/932/1/012054
Subject(s) - classification of discontinuities , geology , photogrammetry , point cloud , laser scanning , bedding , total station , joint (building) , landslide , scanner , remote sensing , geotechnical engineering , geodesy , computer science , laser , engineering , artificial intelligence , optics , mathematical analysis , physics , mathematics , horticulture , biology , architectural engineering
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.