Analysis Of Slope Stability Based On The Effect Of Rainfall On The Lombok International Airport (Bil) - Mandalika Road Sta 10+375 To Sta 10+550
Abstract
BIL - Mandalika Bypass Road connects Lombok International Airport (BIL) to Mandalika Special Economic Zone (KEK). This road has a length of 17.3 KM and was completed in 2021. The construction of this section can cut the travel time from 45 minutes to 15 minutes from BIL to the Mandalika area. In early February 2023 when it was raining season, the BIL - Mandalika Bypass Road surface at sta 10+375 s/d 10+550 experienced cracks, and temporary maintenance had been carried out to keep road remain functional. At the end of May 2023, the cracks became worse and there was a decrease of road surface up to 1.2 to 1.8 meters. Based on the soil test report in the field when the landslide occurred, it shows that the groundwater level is 7.5 meters from the road surface. Laboratory test results show that the subgrade is more dominant sandy silt, besides that the 2024 planning report does not include rain parameters on design of slope stability. The purpose of this study is to determine the effect of rain and groundwater level on landslides and subsidence of the BIL - Mandalika STA 10+375 - 10+550 road in 2023. The simulation results of SEEP/W and SLOPE/W showed that the landslide or subsidence was caused by rain, where the slope safety factor before the landslide was 1.197 and decreased to 0.982 after rainfall happen from Januari 2023 to February 2023.
Full Text:
PDFReferences
Ahmad, N., Haroon, W., & Abid, M. M. (2020). Effect of air voids on permeability and durability of hot mix asphalt. Journal of the National Science Foundation of Sri Lanka, 463 - 474.
Atikah, D. (2017). Pengaruh Hujan Pada Stabilitas Lereng Di Jalan Tol Gempol – Pandaan. urnal Teknik Pengairan, 8(1), 79-88.
Badan Standarisasi Nasional. (2017). SNI 8460:2017 Persyaratan Perancangan Geoteknik. Jakarta, DKI Jakarta, Indonesia.
Chai, J., & Khaimook, P. (2020). Prediction of soil-water characteristic curves using basic soil properties. Transportation Geotechnics 22 (2020) 100295.
Darwis. (2018). Dasar-Dasar Mekanika Tanah. Yogyakarta: Pena Indis.
Das, B. M. (2010). Principle Of Geothecnic Engineering Advanced Soil Mechanics, Seventh Edition. Stamford, USA: Cengage Learning.
Duncan, J., Wright, S., & Brandon, T. (2014). Soil Strength and Slope Stability (Second Edition ed.). Hoboken, New Jersey: John Wiley & Sons, Inc.
Dwikorita, K. (1997). Prediction of Rain-Induced Landsliding By Using Slope Hydrodinamic Numerical Model. Forum Teknik, Jilid 20 No.1.
G. Wright, S., Duncan, J., & L. Brandon, T. (2014). Soil Strength and Slope Stability (Second Edition ed.). Hoboken, New Jersey: John Wiley & Sons, Inc.
J.E., B. (1989). Sifat-sifat Fisis dan Geoteknis Tanah. Jakarta: Erlangga.
Kristo, C., Rahardjo, H., & Satyanaga, A. (2017). Effect of variations in rainfall intensity on slope stability in Singapore. International Soil and Water Conservation Research 5, 258–264.
Malla, B. (2021). Effect of Rainfall on Stability of Soil Slope. Proceedings of 10th IOE Graduate Conference Peer Reviewed ISSN: 2350-8914 (Online), 2350-8906 (Print) (pp. 1299 - 1303). Nepal: Department of Civil Engineering, Pulchowk Campus, IOE, Tribhuvan University.
Muntohar, A. S., & Saputro, R. I. (2014). Pengaruh Kedalaman Muka Air Awal Terhadap Analisis Stabilitas Lereng Tak Jenuh. Inovasi Struktur dalam Menunjang Konektivitas Pulau di Indonesia (pp. 985-990). Surabaya: Seminar Nasional X – 2014 Teknik Sipil ITS Surabaya.
Murthy, V. (2002). Geothecnical Engineering Principles and Practices of Soil Mechanics and Foundation Engineering (first ed.). Florida: CRC Press.
Nasional, B. S. (2019). Tata cara perencanaan ketahanan gempa untuk struktur bangunan gedung dan nongedung. Jakarta.
Pramusandi, S. (2017). Determination of Unsaturated Soil Properties and Slope Deformation Analysis due to the Effect of Varies Rainfall. Poli Teknologi Vol. 10 No.1, Januari 2011.
Subiyanti, H. (2011). Analisis Kelongsoran Lereng Akibat Pengaruh Tekanan Air Pori di Saluran Induk Kalibawang Kulonprogo. Jurnal Ilmiah Semesta Teknika, 14(1), 15-25.
Sosrodarsono, S. (2003). Hidrologi untuk pengairan. Jakarta: PT Pradnya Paramita.
Triatmodjo, B. (2008). Hidrologi Terapan. Yogyakarta: Beta Offset Yogyakarta.
Widisaputra, R., Zakaria, Z., & Iqbal, P. (2020). Pengaruh Beban Gempa Terhadap Kestabilan Lereng Tanah Daerah Liwa dan Sekitarnya Kabupaten Lampung Barat. Padjadjaran Geoscience Journal, Vol. 4, No. 5:411-419.
DOI: http://dx.doi.org/10.12962/jifam.v7i1.22415
Refbacks
- There are currently no refbacks.
Visitor :
Flag Counter
Journal Of Infrastructure & Facility Asset Management by Institut Teknologi Sepuluh Nopember is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.