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All Journal Jurnal Pensil : Pendidikan Teknik Sipil
Dyan Eka Nurhayati
Department of Civil Engineering, Faculty of Civil Engineering and Planning, Institut Teknologi Adhi Tama Surabaya
Civil Engineering, Building, Construction & Architecture Education Other

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ANALISIS ULANG STABILITAS LERENG BENDUNGAN TUKUL PACITAN AKIBAT CLIMATE CHANGE Arintha Indah Dwi Syafiarti; Mohamad Ferdaus Noor Aulady; Laras Laila Lestari; Dyan Eka Nurhayati; Biantoro Pambudi
Jurnal Pensil : Pendidikan Teknik Sipil Vol. 14 No. 2 (2025): Jurnal Pensil : Pendidikan Teknik Sipil
Publisher : LPPM Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/jpensil.v14i2.54366

Abstract

This aim of this study is to evaluate the impact of climate change on the hydrological, hydraulic, and slope stability conditions of the Tukul Dam in the Kali Telu watershed, Pacitan. The methodology includes hydrological analysis using the Log Pearson Type III distribution, flood discharge estimation with the HSS Nakayasu method, and hydraulic simulation using HEC-RAS to determine maximum floodwater elevation. Slope stability was analyzed with Geostudio using the Bishop method to determine the factor of safety (FS). The results indicate that the maximum 1,000-year rainfall reaches 550.82 mm, generating a peak discharge of 1,152.26 m³/s, exceeding the design discharge of 380.73 m³/s. Hydraulic simulation showed a floodwater elevation of +183.59 meters, while slope stability analysis confirmed that all FS values remained above the safe limit of 1.30, ensuring dam stability. This study integrates updated hydrological data with geotechnical modeling to enhance understanding of dam resilience under extreme conditions. Recommendations include spillway capacity improvements, early warning systems, and continuous monitoring to mitigate future flood risks.
LONG STORAGE APPLIED STUDY TO MANAGE FLOODING IN SRIWIJAYA AREA KEDIRI CITY Dyan Eka Nurhayati
Jurnal Pensil : Pendidikan Teknik Sipil Vol. 14 No. 3 (2025): Jurnal Pensil : Pendidikan Teknik Sipil
Publisher : LPPM Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/jpensil.v14i3.57811

Abstract

The 508 meters of drainage channel in Sriwijaya street is divided in half due the railway. The flow in drainage channel is changes gradually as a result of the culverts's smaller dimension than the drainage channel's existing dimension. As a result, occured flooding area in Sriwijaya street. Long storage planning in drainage channel's main can optimizes the productivity of drainage system to manage regional flooding. The drainage channel is designed to be 1,2 m x 1,2 m to accomodate a 10-year flood discharge of 1,31 m3/sec for Trace 1 ad 0,65 m3/sec for Trace 2. Trace 1 is the main part of the Jalan Sriwijaya drainage system, that is designed to be a long storage area, because it is located upstream of the railroad culvert. Considering a volume capacity of 1808.84 m3, the long storage in Trace 1 can accommodate a maximum flood volume of 1780 m3.
Co-Authors Arintha Indah Dwi Syafiarti Biantoro Pambudi Laras Laila Lestari Mohamad Ferdaus Noor Aulady