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All Journal Paduraksa : Jurnal Teknik Sipil Universitas Warmadewa Journal of Civil Engineering E-Dimas: Jurnal Pengabdian kepada Masyarakat Jurnal Rekayasa Sipil dan Lingkungan Panrita Abdi - Jurnal Pengabdian pada Masyarakat JTT (Jurnal Teknologi Terpadu) Logic : Jurnal Rancang Bangun dan Teknologi J-Dinamika: Jurnal Pengabdian Kepada Masyarakat DIKEMAS (Jurnal Pengabdian Kepada Masyarakat) Diseminasi : Jurnal Pengabdian kepada Masyarakat Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences Journal of Applied Civil Engineering and Infrastructure Technology (JACEIT) JURNAL POLI-TEKNOLOGI Jurnal Riset Teknik Sipil dan Sains
Zulis Erwanto
Politeknik Negeri Banyuangi
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Analisis Laju Sedimen Berdasarkan Data Unsteady Flow Real Time Dengan HEC-RAS di DAS Bomo Banyuwangi Syafaat, Habib Marjun; Prasetyo, Yohanes Pracoyo Widi; Sujatmiko, Heri; Purnomo, Dimas Aji; Erwanto, Zulis
Journal of Applied Civil Engineering and Infrastructure Technology Vol 6 No 1 (2025): Agustus 2025
Publisher : Indonesian Society of Applied Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52158/jaceit.v6i1.1114

Abstract

The 2018 flash flood in Banyuwangi Regency highlighted the role of sedimentation in increasing disaster risks. This study aims to analyze sedimentation rates based on real-time unsteady flow data during the rainy and dry seasons, understand the relationship between unsteady flow and sedimentation, and evaluate the role of HEC-RAS in mitigating sedimentation-related risks. Hydrometric measurements were conducted in real-time over seven days in both seasons. Data were analyzed using HEC-RAS and validated using the Mean Absolute Error (MAE) method of bathymetric measurements. The results show that sedimentation rates were higher during the rainy season (2.77 m³/day) compared to the dry season (1.33 m³/day) due to increased discharge and flow velocity. Flow velocity correlates more strongly with sedimentation than discharge, with regression values of 0.8257 in the dry season and 0.4072 in the rainy season. Flood modeling with HEC-RAS indicates that sedimentation increases flood risks, particularly in downstream areas. Therefore, mitigation measures such as river normalization, embankment construction, drainage optimization, and upstream soil conservation are necessary. These findings also support early warning systems to enhance community preparedness for sedimentation-induced floods.
Nilai CBR Tanah Ekspansif Setelah di Stabilisasi Kapur Terhadap Sifat Filtrasi Tanah Sandi, Dora Melati Nurita; Erwanto, Zulis
Journal of Applied Civil Engineering and Infrastructure Technology Vol 6 No 2 (2025): Desember 2025
Publisher : Indonesian Society of Applied Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52158/jaceit.v6i2.708

Abstract

Penelitian ini dilakukan dengan memanfaatkan sifat filtrasi tanah, sehingga stabilisasi dilakukan hanya pada area tanah tertentu dan dilakukan pengamatan pengaruhnya terhadap area sekitar tanah yang distabilisasi. Stabilisasi menggunakan bahan stabilisatior kapur. Prosentase kapur yang digunakan sebesar 8% dari berat tanah. Pengamatan pengaruh tanah di sekitar area stabilisasi dilakukan pada arah horizontal dan arah vertikal. Metode penelitian dengan memodelkan tanah dalam skala laboratorium, yaitu dengan membuat kotak triplek yang berukuran, panjang 1m, lebar 50 cm, tinggi 100 cm. Tanah yang distabilisasi pada area tengah dengan menggunakan kapur 8%, kemudian tanah diuji CBR. Pengujian CBR pada arah horizontal, mengalami peningkatan nilai CBR dibandingkan tanah asli dengan nilai 18,559% menjadi 29,610% dari rata-rata jarak 20 cm hari ke 1 dengan presentase kenaikan 59,2% sedangkan pada jarak 40cm mendapatkan nilai dari rata-rata 30,29%. Pengujian CBR arah vertikal, mengalami peningkatan nilai CBR dari tanah asli. Nilai CBR tanah asli sebesar 18.559%, mengalami kenaikan menjadi 29,610% pada area yang distabilisasi. Pada area jarak 20cm dari area stabilisasi, dengan masa peram hari ke 1 nilai CBR rata-rata sebesar 59,2% sedangkan pada jarak 40cm dengan masa peram hari ke 1 nilai rata-rata CBR yang diperoleh adalah 62,86%. Dari hasil pengujian, dapat disimpulkan bahwa tanah yang berada di sekitar tanah stabilisasi mengalami kenaikan nilai CBR dan semakin lama masa peram semakin meningkatkan nilai CBR.
A STUDY OF SEDIMENT DELIVERY RATIO USING AVSWAT-X IN THE CATCHMENT AREA OF PACAL RESERVOIR OF BOJONEGORO Bambang Sarwono; Nadjadji Anwar; Zulis Erwanto
Journal of Civil Engineering Vol. 30 No. 2 (2010)
Publisher : Institut Teknologi Sepuluh Nopember (ITS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v30i2.7535

Abstract

Recently, the flood intensity that brought by tributary rivers in the catchment area of Pacal reservoir has increased, both in the quantity of runoff and sediment volume. The research aims to set up erosion rate modeling and find the formulation of the Sediment Delivery Ratio (SDR) at Pacal reservoir. The research used USLE and MUSLE methods as comparator to find sediment yield accuracy at Pacal reservoir, by applying ArcView SWAT-X software. Total average annual erosion rate in the catchment area of Pacal reservoir which has area 82 Km2 calculated using USLE and MUSLE methods are 159,31 ton/ha/yr and 582 ton/ha/yr respectively. MUSLE method resulted SDR which is most closely to SDRobservation if it is compared to USLE method. In this research, MUSLE - Sediment-Discharge Rating Curve method has evaluation values MSE = 0,08; RMSE = 0,29; and Nash = 0,75. Furthermore, Sediment Delivery Ratio at catchment area of Pacal reservoir can be formulated as 0,29 3,83. DAS Waduk Pacal SDR A with value of SDRZulis = 0,27 and sediment yield obtained from MUSLE method equal to 157,40 ton/ha/yr, while from USLE method equal to 43,09 ton/ha/yr. Evaluate sediment yield of MUSLE from SDRZulis to formulation of SDR of former researcher was value of Nash = 0,89; MAE = 0,01. Based on the research result, it is expected that the institution which has responsibility in managing the catchment area of Pacal reservoir would pay high attention to zonation map of erosion risk level and can overcome sedimentation in Pacal reservoir.
Co-Authors Abdul Holik Achmad Roghib Mabrur Ade Fani S. I. Akhmad Afandi Akhmad Afandi Andi Wijanarko Anis Usfah Prastujati Anisa Trilia Dewi Annastia Loh Jayanti Anwar, Nadjadji Arifki, Ilham Rusdi Aris Purwanto Bambang Sarwono Baroroh Baried Catraweda, I Gusti Ngurah Bagus D Triasih Dadang Dwi Pranowo Danang Sudarso WPJW Data Iranata Deni Dwi Saputra Devit Suwardiyanto Dian Ridlo Dora Melati Nurita Sandi Enes Ariyanto S Ervina Wahyu Setyaningrum Fatimah Fatimah Feny Yuliana Wardani Galang Sandy Prayogo Ghifari, Achmad Rizal Habibi, Hida Jaya Handoko, Siswo Hasyim, Nur Cholik Himma Silviana IGNB. Catrawedarma Ika Yuniwati, Ika Iqbal Wahyudin Kanthi Pangestuning Prapti M. Abdul Wahid M. Rafli Husamadi M. Rizalul Ilmi M. Shofi’ul Amin M. Shofi’ul Amin Masetya Mukti Maulana, Mahendra Andiek Mirza Ghulam Rifqi Mochammad Rafli Husamadi Mohammad Aziz Yusuf Mustofa Hilmi Nadjadji Anwar Nuraini Lusi Pangestu, Moh. Aji Purnomo, Dimas Aji Riza Rahimi Bachtiar Sari Wiji Utami Sarwono Sarwono Sasmita, Ginanjar Eka Siska Aprilia Hardiyanti Siti Hadiyati Sujatmiko, Heri Syafaat, Habib Marjun Tri Maryono Rusadi Umi Masluha Wahyudin, Iqbal Wari, Wahyu Naris Yohanes Pracoyo Widi Prasetyo Yuda Pratama Gumelar Yudha Pratama Gumelar Yuni Ulfiyati Yuni Ulfiyati Yuni Ulfiyati