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Sriyana, Ignatius
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering Social Sciences Transportation

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Indeks Stakeholders Pengelolaan Daerah Aliran Sungai dengan Pendekatan KISS di Indonesia Sriyana, Ignatius
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 24, Nomor 1 (2018)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (544.698 KB) | DOI: 10.14710/mkts.v24i1.18966

Abstract

Integrated watershed management (IWM) using KISS (coordination, integration, synchronisation, and synergy) method is believed to be the answer for problems lingering the integrated watershed management in Indonesia. How successful the management is depends on how capable of stakeholders are to performing coordination, integration, synchronisation, and synergy in managing the watershed. This study aimed at measuring the rates of coordination, integration, synchronisation, and synergy performed by each stakeholder by applying an "Index Rate" instrument. Research findings revealed that, simultaneously, the coordination, integration, synchronisation, and synergy obtained by the watershed management stakeholders resulted in a moderate rate (71.4). Partially, the rates obtained were as follows: moderate coordination (72.69); moderate integrity (72.50); moderate synchronisation (70.34); and moderate synergy (70.05).
KAJIAN DISTRIBUSI SEDIMENTASI TERHADAP UMUR RENCANA WADUK CIAWI DI KABUPATEN BOGOR Siwu, Wulandari Pingkan; Sangkawati, Sri; Sriyana, Ignatius
Rang Teknik Journal Vol 4, No 2 (2021): Vol. 4 No. 2 Juni 2021
Publisher : Fakultas Teknik Universitas Muhammadiyah Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (499.045 KB) | DOI: 10.31869/rtj.v4i2.2321

Abstract

Waduk Ciawi terletak di bagian hulu sungai Ciliwung di Desa Cipayung Kecamatan Megamendung Kabupaten Bogor Provinsi Jawa Barat. Waduk Ciawi merupakan waduk eka guna (single purpose) yang dibangun untuk pengendalian debit puncak banjir maksimum di hulu Sungai Ciliwung dengan konsep dry dam. Perencanaan suatu bendungan tentunya tidak akan pernah terlepas dari rencana usia waduk, dalam perencanaannya selalu memperhitungkan jumlah sedimen yang akan masuk ke dalam waduk selama usia guna waduk karena pengendapan sedimen di dead storing dapat berdampak pada usia guna waduk, sehingga perlu dilakukan analisis untuk memprediksi besarnya sedimentasi dan pola distribusi sedimen pada Waduk Ciawi dalam upaya optimalisasi pengelolaan waduk. Memprediksi besarnya sedimentasi di Waduk Ciawi dilakukan berdasarkan pengaruh sedimen layang dan analisis distribusi sedimen menggunakan Metode Empiris Pengurangan Luas (Empirical Area Reduction Method). Berdasarkan hasil analisis, jumlah sedimen yang mengendap di Waduk Ciawi sepanjang umur rencana adalah sebesar 206.687,60 m3, dengan elevasi nol baru (new zero elevation) waduk setelah tahun ke 50 yaitu pada +512 m dan kapasitas tampungan efektif yang terisa sampai dengan umur efektif tercapai (T50) sebesar 6.178.131 m3. Secara teoritis Waduk Ciawi masih bisa berfungsi dengan baik sampai dengan umur rencana terlampaui.
Landslide Mitigation at The Bagong Dam Abutment, Trenggalek District Hilmawan, Gilang Bobby; Sriyana, Ignatius
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 20 No. 1 (2024): May
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v20i1.66371

Abstract

Landslides occurred continuously from July 2022 until July 2023, disrupting the construction of the Bagong Dam abutment. Geologically, the foundation of the Bagong Dam consists of a fairly thick colluvial layer, which is prone to landslides. So, the analysis of landslide mitigation at the Bagong Dam abutment is needed. The slope stability analysis carried out by Fellenius and Bishop method, then the slope modeling was carried out using Geostudio software. The analysis results on the existing slopes produced a safety factor of 0.987 (<1.07) for the Fellenius method and 1.042 (<1.07) for the Bishop method. These safety factors indicate that the existing slope is unstable and slope failure is likely to occur. In the first alternative countermeasure analysis, the slope safety factors for the cross-section of the dam at STA 0+625 were 1.715 for upstream and 1.338 for downstream; at STA 0+641, 1.321 upstream and 1.306 downstream; and for the longitudinal section of the dam, 1.525. All these safety factors greater than 1.25, indicating that the slope is stable. In the second alternative countermeasure, the slope safety factors obtained for the cross-section of STA 0+641 were 1.362 for upstream and 1.386 for downstream, and 1.657 for the longitudinal section. These safety factors are also greater than 1.25, which indicates the slope is in stable condition. The additional cost for implementing the first alternative countermeasure is 73.9 million, while for the second alternative is 35.7 million. So that, the second alternative countermeasure is the best choice by the multi-criteria decision-making analysis results.
Pentahelix Implementation Based on “KISS” (Collaboration, Integration, Synchronization, and Synergy) in Local Policy on Flood Management Strategy of the Bodri Kuto River Basin Yunianto, SR Eko; Sriyana, Ignatius; Suharyanto, Suharyanto
Jurnal Politik Indonesia: Indonesian Political Science Review Vol 8, No 2 (2023): General Issue: Indonesian Politics
Publisher : Political Science Program, Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/ipsr.v8i1.42413

Abstract

Collaboration, integration, synchronization, and synergy approaches in water resources management offer more diverse water resources management efforts to deal with flood disaster issues at Bodri Kuto River Basin. The Penta helix-based approach is relevant and essential in the Bodri Kuto River Basin. This study aims to identify stakeholders in the Penta helix elements, determine the impact of the KISS variables in flood management strategies, and determine priority strategies in flood management in the Bodri Kuto River Basin. Pentahelix stakeholders in flood management at Bodri Kuto River Basin consist of parties from the government, private sectors, academics, non-governmental organizations, and the mass media. Based on the results of the KISS index analysis, it is known that the variable synchronization score is included in the "good" criteria. In contrast, the "average" criteria include the other three variables. These results come in with some concerns and recommendations that the WS Bodri Kuto flood management needs to implement several strategies to increase the KISS variables and short and long-term response strategies based on the SWOT component.
Simulasi Pola Operasi Waduk Batutegi, Provinsi Lampung : Simulation of Batutegi Reservoir Operation Pattern, Lampung Province Swastika, Dian; Wulandari, Dyah Ari; Sriyana, Ignatius
Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil Vol. 11 No. 2 (2022): Cantilever
Publisher : Department of Civil Engineering and Planning, Faculty of Engineering, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35139/cantilever.v11i2.149

Abstract

Batutegi Reservoir is a multi-purpose reservoir that is used to increase the water supply to the Argoguruh Weir to expand the irrigation area in the Sekampung Irrigation System. Batutegi Reservoir supplies the water demand not only for irrigation, covering an area of 66.573 Ha, but also for hydroelectric power generation (hydropower) of 2 x 14 MW and the raw water supply of 2.250lt/s. The operational curves of the Batutegi Reservoir were prepared in 2017, aiming to control the water release to ensure the planned demand is fulfilled. However, the reservoir operation curves must be reviewed at least once every 5 (five) years to comply with the changes in reservoir conditions and the development of its benefits/functions. The study aimed to determine the reservoir reliability by updating the reservoir operation curves in 3 conditions; wet year, normal year, and dry year using the SOR (Standart Operating Release) simulation method according to the inflow and outflow during the mid-month period. Results showed that in the wet year, normal year, and dry year, the reservoir reliability in supplying water for irrigation, raw water, and hydropower is satisfactory in each period. In conclusion, although some simulation periods showed the final RSL (Reservoir Water Levels) of the reservoir are below the upper limit of the operation curves, they are still above MOL (Minimum Operation Level) hydropower level meaning all supply for irrigation, raw water, and hydropower can be 100% fulfilled.
Pengelolaan DAS Mikro: Best Practice Penanganan Potensi Konflik Akibat Semburan Gas di Lahan Pertanian Desa Nglobo, Kabupaten Blora, Jawa Tengah Sriyana, Ignatius; Sangkawati, Sri; Roselyn, Melfina; Kusmiyati, Florentina; Ramadan, Bimastyaji Surya
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 30, Nomor 1 (2024)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v30i1.60034

Abstract

Semburan gas di lahan pertanian Desa Nglobo, Kabupaten Blora, Indonesia, menyebabkan kontamisasi lahan, sehingga kesehatan Daerah Aliran Sungai (DAS) mengalami penurunan. Penurunan kesehatan DAS terlihat pada air dan tanah yang melebihi baku mutu Hal ini menyebabkan terjadinya konflik di masyarakat karena produktivitas tanaman padi dan jagung mengalami gagal panen. Penelitian ini bertujuan mengembalikan kesehatan daerah aliran sungai yang terkontaminasi baik lahan pertanian dan kualitas air. Metode yang digunakan adalah dengan pendekatan pengelolaan DAS mikro yang meliputi kegiatan berdiskusi dengan masyarakat dan para pihak lainnya,  usaha remediasi, sekolah lapangan dan monitoring evaluasi. Hasil kajian menunjukkan penambahan pupuk organik untuk mengembalikan kesuburan tanah terutama meningkatkan kandungan C-Organik sangat diperlukan yaitu dengan memberikan 29,58 ton/ha – 30,14 ton/ha pupuk pada lahan tersebut. Kualitas air setelah remediasi menunjukkan nilai di bawah ambang batas. Hasil evaluasi uji tanam menunjukkan padi dan jagung dalam kondisi baik, dibuktikan dengan tidak terjadinya kegagalan panen, kondisi kesuburan  lahan pertanian dapat pulih kembali. Pendekatan pengelolaan  DAS mikro, yang terukur, dengan aksi nyata  bersama masyarakat  terkena dampak dan para pihka yang terkait, dapat menyelesaikan konflik sosial yang terjadi akibat pencemaran pada lahan pertanian masyarakat.
Penentuan Initial Elevation untuk Mendukung Operasi Early Release Bendungan Sadawarna Wahyudi, Andri Puji; Wulandari, Dyah Ari; Sriyana, Ignatius
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 30, Nomor 1 (2024)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v30i1.62293

Abstract

Modifikasi Bendungan Sadawarna berupa penambahan pintu yang ditempatkan di samping kanan pelimpah yang berfungsi sebagai fasilitas early release bersama dengan bangunan pengambilan untuk menurunkan muka air waduk sebelum banjir datang. Penerapan early release pada penelusuran banjir di waduk membutuhkan initial elevation yang berbeda dengan initial elevation pada umumnya. Tujuan penelitian ini adalah menetapkan initial elevation baru dalam mendukung operasi early release Waduk Sadawarna. Penelitian dilakukan dengan menghitung debit banjir rencana kemudian melakukan penelusuran banjir lewat waduk dengan 3 skenario initial elevation. Metode yang digunakan untuk analisis debit banjir kala ulang adalah SCS (Soil Conservation Service). Metode penelusuran banjir menggunakan level pool routing dengan aplikasi HEC-HMS. Initial elevation ditetapkan dengan 3 (tiga) skenario yang dimulai dari initial elevation +75,25 mdpl, +77,00 mdpl dan +78,50 mdpl. Hasil analisis dari 3 skenario diperoleh initial elevation optimal yang dapat digunakan dalam operasi early release berada pada elevasi +77,00 mdpl. Hasil simulasi penelusuran banjir dengan initial elevation tersebut menghasilkan reduksi debit banjir rencana hingga debit kala ulang 50 tahunan dan menghasilkan recovery muka air waduk tercepat.
Limit Equilibrium Analysis of Slope Reinforcement Under Varying Pore Pressure: A Case Study of Cabean Dam Conduit Channel Rachman, Muhammad Perwira; Sangkawati, Sri; Sriyana, Ignatius
Jurnal Teknik Sipil Vol 26, No 1 (2026): Jurnal Teknik Sipil Universitas Tanjungpura
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v26i1.104448

Abstract

Slope instability induced by rainfall infiltration and increasing pore-water pressure is a common geotechnical problem in tropical regions. This study evaluates the effectiveness of slope-reinforcement methods applied to the conduit channel slope at Cabean Dam, Central Java, Indonesia. Stability analysis was conducted using three limit-equilibrium methods—Ordinary, Bishop Simplified, and Morgenstern–Price—implemented in SLOPE/W. Three slope conditions were analyzed: the original slope configuration, slope flattening combined with soil nail reinforcement, and slope flattening combined with shotcrete treatment. A sensitivity analysis was performed by varying the pore pressure ratio (Ru) from 0.0 to 0.7 to represent different rainfall infiltration conditions. The results indicate that the initial slope condition is unstable, with safety factors below acceptable engineering standards. Soil nail reinforcement significantly improves slope stability but remains sensitive to increasing pore pressure. The combination of slope flattening and shotcrete treatment provides the highest safety factors and the lowest sensitivity to pore-pressure variations, indicating better performance for slope stabilization in high-rainfall environments.
Co-Authors Dyah Ari Wulandari Florentina Kusmiyati Hilmawan, Gilang Bobby Rachman, Muhammad Perwira Ramadan, Bimastyaji Surya Roselyn, Melfina Siwu, Wulandari Pingkan Sri Sangkawati Sachro Suharyanto Swastika, Dian Wahyudi, Andri Puji Yunianto, SR Eko