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All Journal Journal of Earth Energy Science, Engineering, and Technology
Sutriyono sutriyono
Universitas Negeri Gorontalo
Energy

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Identification of Land Movement Safety Factors on the Slope of Lolak Dam Sutriyono sutriyono; Ahmad Zainuri; Muhammad Kasim
Journal of Earth Energy Science, Engineering, and Technology Vol. 4 No. 3 (2021): JEESET VOL. 4 NO. 3 2021
Publisher : Penerbitan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (273.065 KB) | DOI: 10.25105/jeeset.v4i3.10713

Abstract

North Arm Sulawesi is a triple junction between three convergent plates which results in development of geological structures at all scales, thereby triggering the potential for land motion. Lolak Dam is an infrastructure that functions as a water reservoir which is then channeled for domestic needs. This research aims to identify safety factors of the Lolak Dam slopes where land motion occurs several times. Field data in the form of lithology was carried out by geomechanical testing in the form of specific gravity, cohesion, and internal shear angle. The analysis was carried out on the slopes of the Lolak Dam on the left backrest which is a spillway area. The method used is Bishop with the help of the Slide v.6 Program. Lithological in the research area obtained gray claystone, red claystone, chert slate, sandstone, and basalt. Safety factors result which using the Slide program are 1.517 (Stable) in slope 1, 1,260 (Stable) in slope 2, and 0.745 (unstable) in slope 3.
Co-Authors Ahmad Zainuri Muh Kasim