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All Journal U Karst JURNAL TIARSIE Jurnal Teknik Sipil COMSERVA: Jurnal Penelitian dan Pengabdian Masyarakat Cerdika: Jurnal Ilmiah Indonesia Jurnal Pengabdian Tri Bhakti Journal of Civil Engineering and Vocational Education
Mulyawati, Fauzia
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Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Public Health Social Sciences Transportation

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Journal : U Karst

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Non-Destructive Test and Numerical Approach for Tailrace Safety Evaluation of Ir. H. Djuanda Dam Damayanti, Vivik Arti; Mulyawati, Fauzia
UKaRsT Vol. 8 No. 2 (2024): NOVEMBER
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/ukarst.v8i2.6191

Abstract

Dam Ir. H. Djuanda is one of the important infrastructures in managing water resources in Indonesia, with strategic functions such as flood control, irrigation, hydroelectric power plants (PLTA), and raw water supply. The lower channel (tailrace) plays a crucial role in supporting the efficiency of the dam's hydraulic system. However, previous inspections revealed erosion and exposed aggregate in the tailrace concrete layer which could threaten the stability of the structure. This research aims to evaluate the condition of the tailrace structure of Dam Ir. H. Djuanda. An evaluation was carried out by integrating the NDT method using Schmidt Hammer and numerical simulation via Plaxis 2D software. The Schmidt Hammer test data gives an average concrete quality value of 37.47 MPa, while the Plaxis 2D simulation shows that the Cartesian stress ( ,  and ) on the structure is still within safe limits. The simulation results also show a safety factor value of 1.795, which meets the structural safety criteria. These findings indicate that the tailrace concrete was designed with a high safety factor, so that it can withstand hydrostatic loads and ground pressure even though it has been in operation for more than five decades. This research shows that the combination of NDT and numerical simulation is an effective method for evaluating structural conditions without damaging the material. This approach can be adopted to inspect and maintain similar infrastructure to ensure long-term operational stability and sustainability.
Flood Risk Analysis for the Construction of the Patimban Port Access Toll Road Abdullah Dwi Noviantoro, Agung; Mulyawati, Fauzia; Savitri Nurvita, Rully
UKaRsT Vol. 8 No. 2 (2024): NOVEMBER
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/ukarst.v8i2.6192

Abstract

In recent decades, the risk of flooding in the Cipunagara River area has increased due to global climate change causing more extreme rainfall patterns. The planned construction of the Patimban Port Access Toll Road has a strategic role in supporting national logistics connectivity. However, the geographical location of the planned toll road in the lowlands near the Cipunagara River poses a significant risk to the sustainability of the infrastructure. This study aims to analyze the risk of flooding in the Cipunagara River and its impact on the design of the toll road. Hydrological analysis was carried out using rainfall data from eight observation stations for the period 2012–2021. Analysis of frequency distribution, rainfall intensity and the Soil Conservation Services (SCS) Unit Hydrograph method was carried out to calculate peak flood discharge. Modeling was carried out using Surface Water Modeling System (SMS) software. The results of the study indicate that the Cipunagara River Basin (DAS) has high rainfall variability with the potential for extreme rainfall in large return periods. The peak discharge of the 100-year return period is 1003.582 m³/second, indicating the risk of extreme flooding because it exceeds the river capacity of 309.31 m³/second. The results of flood modeling show that the flood water level in the 100-year return period reaches +8,908 meters, which confirms the need for a minimum toll road infrastructure elevation of +9,908 meters to meet the vertical clearance standard. These findings provide a significant contribution to the planning of toll road infrastructure that is more resilient to flood risks, supports operational sustainability, and reduces potential economic losses.
Co-Authors ., Andriansyah Abdullah Dwi Noviantoro, Agung Al Fiqry, Bangga Futra Amelia, Riri Aulia, Diana Fika Damayanti, Vivik Arti Fallah, Rahmi Ghifari, Rizha Rafli Gilang Ramadhan Gugum Gumilar Hennie Husniah Ikhsan, Iqbal Irvani Irma Damayanti Marhamatunnisya, Alfhi Mulya, Todo Nurjaman, Reza Agung Nurul Fauziah Ramadhan, Elkhi Seftiarki Ramadhan, Yanuarko Rosidah, Dede Savitri Nurvita, Rully Siegfried Syafier, Siegfried Sudarsono, Ignatius Sudirman Sudirman Sugandi, Diki kirana Suhendra, Eddy Sujana, Rd. Octavia Maryanche Wahyudi, Dwi Agung Wildan, Wili