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All Journal Journal of Infrastructure and Facility Asset Management
Junianto, Agustinus
The National Road Construction Agency (BPJN) NTT, Kupang, Indonesia
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Energy Engineering Environmental Science Library & Information Science Mathematics Transportation

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Slope Stability for Landslide in Road Preservation Working Packages Ende-Wolowaru and Junction-Kelimutu STA 8+425 Sasarari, Frans Andre; Lastiasih, Yudhi; Wahyudi, Herman; Junianto, Agustinus
Journal of Infrastructure & Facility Asset Management Vol 6 (2024): Special Issue 2 : Journal of Infrastructure & Facility Asset Management
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/jifam.v6i0.19996

Abstract

On the Ende-Kelimutu national road section at STA 8+425, according to the identification and field survey, the landslide that occurred at this point was caused by high rainfall intensity and geological factors of the slope. As the road supervisor, the Balai Pelaksanaan Jalan Nasional (BPJN) of East Nusa Tenggara has designed a landslide treatment using a combination of cantilever walls and drilled poles. Soil investigation data at STA 8+425 shows that the slope is dominated by sand with N-SPT values above 15 to a depth of 14.45 meters. When making design improvements, a number of rainfall data from several weather observation stations are needed, in order to determine the effect of rainwater infiltration on the landslides that occur. This study aims to determine the influence of rainwater infiltration on the occurrence of landslides at the study site, where the results of the analysis conducted with Geostudio prove the truth. Modeling with the combination of SEEP/W and SLOPE/W, the FS value before the landslide was 2.302 and then decreased to 0.35 during the landslide.
Slope Stability Analysis for Landslide in Road Preservation Working Packages Ende - Wolowaru and Junction – Kelimutu Sta 10+475 Akbar, Fauzan; Lastiasih, Yudhi; Wahyudi, Herman; Junianto, Agustinus
Journal of Infrastructure & Facility Asset Management Vol 6 (2024): Special Issue 1 : Journal of Infrastructure & Facility Asset Management
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/jifam.v6i0.19892

Abstract

The National Road Construction Agency (BPJN) in East Nusa Tenggara Province through the Satuan Kerja IV (Satker) has repaired some landslide points in the Ende – Wolowaru and Junction – Kelimutu Road Preservation working package. One of the landslide points that need treatment is at STA. 10+475. Based on survey and planning results from the Satker P2JN BPJN NTT, the most dominant factors that trigger landslides are geological conditions and high rainfall. Data from soil investigations at the landslide location at STA 10+475 after the landslide occurred showed that the soil was dominated by sandy clay. However, in their planning report, rainfall data was not found, therefore, it is needed to see whether there is an influence of rainwater infiltration at the location for causing landslides. This research aims to determine the causes of landslides including whether there is an influence of rainwater infiltration at the research location and the simulation results with the SLOPE/W and SEEP/W porgrams are proven to be correct. After simulating with the SEEP/W program, the slope safety factor which was 1.586 before the landslide occurred dropped to 0.883.
Co-Authors Akbar, Fauzan Lastiasih, Yudhi Sasarari, Frans Andre Wahyudi, Herman