Proposed approach for assessing the deformation of large-scale retaining walls implementing terrestrial laser scanner

New constructions in landfill zones have caused movement and cracks in large-scale retaining walls that are characterized by their high elevations and long lengths, necessitating unusual measurements for geotechnical experts to find a solution. A terrestrial laser scanner is one of the best ways to create a detailed 3D model. Laser scanning reduces the time required for on-site data collection by 50-70%, compared to traditional surveying. Laser scanning improves processes, accuracy, and cost, making it a viable tool for structural monitoring and deformation research. Coordinate transformation equations were used to align the X-axis with the wall's length, the Z-axis with the wall height, and the Y-axis perpendicular to the wall, creating a cross-section and contour map that shows how the wall has moved and cracked relative to the initial case. Geotechnical specialists can readily assess deformation and determine permanent solutions with these sections and contour maps. Vertical sections were generated every 5.0 m along the length of the retaining wall, accompanied by contour maps with a contour interval of 1 cm. The maximum movement is about 45 cm. One articulates the distinction as a swift and precise observation of deformation compared to conventional surveying methods.