Geotechnical Aspects of Salo Lawo Waterfall in Salopuru Pattappa, Pujananting District, Barru Regency, South Sulawesi Abdul Salam Munir (a,b*), Habibie Anwar (a), Muhamad Hardin Wakila (a)
a) Department of Mining Engineering, Universitas Muslim Indonesia, Makassar, Indonesia
b) Laboratory of Rock Mechanics, Universitas Muslim Indonesia, Makassar, Indonesia
*salammunir[at]umi.ac.id
Abstract
The Salo Lawo waterfall represents a significant geotourism destination for the community in Pujananting, Barru district. It is of critical importance to identify the geotechnical aspects of this site in order to ensure the safety of visitors and to prevent potential rock mass movements. This research identifies fundamental geotechnical aspects through measuring and observing joints or discontinuities using the scanline method in the field. This is complemented by a kinematic analysis of stereographic projections, which enables the determination of failure modes potential and the classification of rock masses. The Salo Lawo waterfall is formed by sandstone in the Balang Baru formation, which exhibits a medium rock compressive strength. The kinematic analysis indicated that two types of failure could potentially occur on the rock slope wall: wedge sliding (26.29%) and oblique toppling, which is part of direct toppling (23.67%). The potential for planar sliding and flexural toppling was not identified, as indicated by the absence of critical intersections and the presence of only very small critical intersections obtained from stereographic projections. The kinematic analysis conducted in this research project predicts the potential for failure modes to occur at this location. This is considered to be a basic or initial stage in the assessment of the geotechnical aspects of the area. Consequently, further research is required to employ more detailed methods and laboratory testing to estimate the stability of the rock slopes at Salo Lawo waterfall. This will enable the information on geotechnical aspects to become more complete and valuable.
Keywords: Geotechnical- Geotourism- Waterfall- Rock Failure
