Analisis Stabilitas Lereng Pembangunan Embung Bena dengan Geostudio
DOI:
https://doi.org/10.53863/kst.v7i01.1652Keywords:
Reservoir, Slope Stability, GeoStudio, Safety Factor, Rapid Drawdown.Abstract
The Bena Reservoir was designed as a water supply solution in Bena Village, South Central Timor District, which has semi-arid climatic conditions. The success of embankment construction is not only determined by the storage capacity, but also the slope stability of the embankment body which affects the safety and successful functioning of the embankment. This research focuses on analyzing slope stability using GeoStudio 2012 software and the Modified Morgenstern method. The analysis was conducted under four operating conditions: empty, normal water level, flood water level, and rapid drawdown. Geotechnical parameters such as cohesion, inner shear angle, and soil permeability were included in the simulation. Results showed that the Safety Factor (SF) values under all conditions were well above the minimum required (SF > 1.2 - 1.5), with the highest value being 43.525 and the lowest being 10.122. This finding confirms that the embankment slopes are in a very stable condition. Therefore, The Bena Reservoir technically meets the slope safety criteria and is ready to support safe and sustainable water management
References
Kementerian Pekerjaan Umum dan Perumahan Rakyat Republik Indonesia. (2018). Surat Edaran No. 7 Tahun 2018 tentang Pedoman Pembangunan Embung Kecil dan Bangunan Penampung Air Lainnya di Desa (p. 113).
Kementerian Pekerjaan Umum. (2004a). Analisis stabilitas bendungan tipe urugan akibat gempa: Pedoman konstruksi dan bangunan (Pd T-14-2004-A).
Kementerian Pekerjaan Umum. (2004b). Peta zona gempa Indonesia sebagai acuan dasar perencanaan dan perancangan bangunan. Pusat Litbang Sumber Daya Air.
Mali, M. S., Tanesib, J. L., & Pingak, R. K. (2018). Pemetaan daerah rawan erosi dengan menggunakan aplikasi penginderaan jauh dan sistem informasi geografi di Kabupaten Timor Tengah Selatan, Provinsi Nusa Tenggara Timur. Jurnal Fisika: Fisika Sains dan Aplikasinya, 2(2), 58–65. https://doi.org/10.35508/fisa.v2i2.546
Pusat Studi Gempa Nasional (PuSGeN). (2017). Pusat Studi Gempa Nasional. Pusat Penelitian dan Pengembangan Perumahan dan Permukiman.
Setiyanto, R., Djarwanti, N., & Rahmadi, A. P. (2014). Analisis struktur bendungan (Studi kasus konstruksi Embung Gamang). E-Jurnal Matriks Teknik Sipil, 2(2), 657. http://peer.berkeley.edu/smcat/search.html
Wijaya, I. P. S. (2021). Analisis stabilitas lereng pembangunan embung Desa Bumi Ayu Kecamatan Pringsewu. Jurnal Profesi Insinyur Universitas Lampung, 2(2), 6–11. https://doi.org/10.23960/jpi.v2n2.59
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2025 Antonius L. Antjak, Indradhi Lasmana, Ramzy Sayonara, Fabianus J. S. Nope
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution-ShareAlike 4.0 International License that allows others to share the work with an acknowledgment of the work’s authorship and initial publication in this journal
