Design and Planning of Riverbank Protection in Ledok Kulon Village, Bojonegoro
DOI:
https://doi.org/10.59890/ijsas.v4i7.21Keywords:
Riverbank, slope stability, gabion wall, FCSP, rapid drawdownAbstract
In Ledok Kulon Village, Bojonegoro, unstable riverbanks pose a direct threat to local infrastructure. Preliminary GEO5 assessments found existing slopes to be critically unsafe, with factors of safety consistently below 1.50 and hitting a dangerous 0.90 at section P3. To address this, a protection system was developed using soil investigations and numerical simulations. The design integrates gabions, Flat Concrete Sheet Piles (FCSP), and mini piles to withstand normal, flooding, and rapid drawdown conditions. Findings show that the rapid drawdown phase (C3) is the most critical for stability. Nevertheless, the FCSP components performed satisfactorily, maintaining structural integrity with a maximum displacement of only 14.6 mm. This design is technically sound and fully compliant with SNI 8460:2017 standards.
References
Alonso, E. E., & Pinyol, N. M. (2016). Numerical analysis of rapid drawdown: Applications in real cases. Water Science and Engineering, 9(3), 175–182. https://doi.org/https://doi.org/10.1016/j.wse.2016.11.003
Badan Standardisasi Nasional. (2002). Cara uji kelulusan air di laboratorium untuk tanah berbutir halus dengan tinggi tekanan menurun.
Badan Standardisasi Nasional. (2020). Penetapan Standar Nasional Indonesia 1727: 2020 Beban desain minimum dan kriteria terkait untuk bangunan gedung dan struktur lain.
Chimere, C., & Liu, H. (2025). Geosystems and Geoenvironment Stability analysis of geotextile-reinforced unsaturated slope under drawdown conditions. Geosystems and Geoenvironment, 4(4), 100423. https://doi.org/10.1016/j.geogeo.2025.100423
Ezzeldin, R., Saqr, A., & Abd-Elmaboud, M. (2026). Hydro-morphologic Variations Induced by Bandal-like Structures for River Bank Protection. Water Resources Management, 40. https://doi.org/10.1007/s11269-025-04439-5
Pandey, B. R., Knoblauch, H., & Zenz, G. (2023). Slope Stability Evaluation Due to Reservoir Draw-Down Using LEM and Stress-Based FEM along with Mohr–Coulomb Criteria. Water, 15(22). https://doi.org/10.3390/w15224022
Ramli, M., Karasu, T. J., & Dawood, E. T. (2013). The stability of gabion walls for earth retaining structures. Alexandria Engineering Journal, 52(4), 705–710. https://doi.org/10.1016/j.aej.2013.07.005
Sajwan, A., & Ramana, G. (2024). Integrating geoinformatics and numerical modelling for landslide back-analysis and forecasting: a proactive mitigation study of the Shiv Bawri landslide. Landslides, 21, 2481–2499. https://doi.org/10.1007/s10346-024-02321-w
Sari, P. T. K., Mochtar, I. B., & Lastiasih, Y. (2024). Special Case on Landslide in Balikpapan, Indonesia Viewed from Crack Soil Approach. KSCE Journal of Civil Engineering, 28(6), 2173–2188. https://doi.org/https://doi.org/10.1007/s12205-024-0402-3
Standar Nasional Indonesia. (2017). Persyaratan perancangan geoteknik.
Udomchai, A., Hoy, M., Horpibulsuk, S., Chinkulkijniwat, A., & Arulrajah, A. (2018). Failure of riverbank protection structure and remedial approach: A case study in Suraburi province, Thailand. Engineering Failure Analysis. https://doi.org/10.1016/j.engfailanal.2018.04.040
Wang, Y., & Smith, J. V. (2021). Optimisation of a Slope-Stabilisation System Combining Gabion-Faced Geogrid-Reinforced Retaining Wall with Embedded Piles. KSCE Journal of Civil Engineering, 25(12), 4535–4551. https://doi.org/10.1007/s12205-021-1300-6
Zhou, C., Wenchao, & Sui, W. (2022). Transparent soil model test of a landslide with umbrella-shaped anchors and different slope angles in response to rapid drawdown. Engineering Geology. https://doi.org/10.1016/j.enggeo.2022.106765
