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All Journal International Journal of Science and Engineering (IJSE) TEKNIK Rekayasa Sipil Jurnal Wilayah dan Lingkungan Jurnal Rekayasa Sipil dan Lingkungan Briliant: Jurnal Riset dan Konseptual Journal of Development Research RACIC : Rab Construction Research AGREGAT Jurnal Penelitian Pendidikan IPA (JPPIPA) Syntax Literate: Jurnal Ilmiah Indonesia Rang Teknik Journal SIKLUS: Jurnal Teknik Sipil Media Ilmiah Teknik Sipil Borneo Engineering: Jurnal Teknik Sipil Jurnal Teknik Sipil
Dyah Ari Wulandari
Departemen Teknik Sipil, Universitas Diponegoro
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Physics Social Sciences Transportation Other

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PENGARUH ABU VULKANIK ERUPSI GUNUNG SEMERU TERHADAP LAJU EROSI DAN SEDIMENTASI DI DTA (DAERAH TANGKAPAN AIR) WADUK SENGGURUH Hendri Wijaya; Dyah Ari Wulandari
Racic : Rab Construction Research Vol. 10 No. 1 (2025): JUNI 2025
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v10i1.5584

Abstract

Historically, over the past two decades, Mount Semeru has erupted eight times, specifically in 2008, 2016, 2019, 2020, 2021, 2022, 2023, and 2024. Given Mount Semeru's frequent eruptions, studies on erosion rate predictions, sedimentation, and sediment control structures (SCS) are necessary. Research results indicate that volcanic ash significantly affects erosion rates. The erosion rate in the Sengguruh watershed, without considering the influence of volcanic ash, is 1,359,598.20 tons/year, while the rate that accounts for volcanic ash influence is 1,383,405.96 tons/year, reflecting an increase of 23,807.76 tons/year. The total sedimentation rate in the Sengguruh Reservoir, excluding the influence of volcanic ash, is 8,091,860.92 m³/year. When volcanic ash is taken into account, the total sedimentation rate increases to 8,337,270.20 m³/year, representing an increase of 245,409.29 m³/year or 2.94%. Based on the analysis, the potential sedimentation rate can be mitigated by existing SCS structures, eliminating the need for additional ones. However, since the storage capacity of the four SCS structures is nearly full, they must first be emptied. Subsequently, routine dredging should be carried out annually, with a volume of 100,000 m³/year to 150,000 m³/year.
PENINGKATAN PEMANFATAAN DANAU RAWA PENING Dyah Ari Wulandari; sriyana sriyana; Salamun Salamun; Dwi Kurniani; Albert Nico Tristanto; Zelly Rinaldi
Teras Jurnal : Jurnal Teknik Sipil Vol. 11 No. 2 (2021): Volume 11 Nomor 2, September 2021
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v11i2.477

Abstract

Abstrak Danau Rawa Pening mempunyai peranan sebagai reservoir alami yang dimanfaatkan untuk PLTA, sumber air baku, irigasi, perikanan, dan pariwisata serta pemeliharaan Sungai Tuntang. Salah satu permasalahan di Danau Rawa Pening adalah sedimentasi yang berdampak pada menurunnya kapasitas tampungan, oleh karena kondisi Danau Rawa Pening saat ini maka diperlukan upaya penanganan untuk meningkatkan pemanfaatan Danau Rawa Pening guna mendukung kegiatan irigasi pertanian, perikanan, pariwisata, supply air baku dan pembangkit listrik. Tujuan dari penelitian ini adalah untuk menganalisis peningkatan pemanfaatan Danau Rawa Pening yang merupakan waduk alami, tidak mempunyai intake dan pelimpah seperti waduk - waduk pada umumnya. Pengaturan outflow dari danau ada di Bendung Gerak Jelok yang berjarak ± 5 km dari outlet danau. Oleh karena itu peningkatan pemanfaatan danau akan dilakukan dengan membuat intake dan pelimpah sehingga pengeluaran dapat diatur sesuai kebutuhan yang diperlukan Tahapan analisis yang dilakukan adalah analisis kebutuhan air, analisis ketersediaan air, analisis laju sedimentasi, analisis kebutuhan tampungan dan analisis kinerja. Berdasarkan hasil analisis peningkatan pemanfaatan Danau Rawa Pening dapat dilakukan dengan membuat intake pada elevasi + 460,5 m dan pelimpah pada elevasi puncak + 462,72 m. Pada kondisi ini dapat disediakan tampungan efektif sebesar 31,9 juta m3, tampungan mati sebesar 1,264 juta m3 dan tampungan utk perikanan dan pariwisata sebesar 10,311 juta m3, dengan kinerja pelayanan 89%.Kata kunci: Sedimentasi, peningkatan pemanfataan danau, Danau Rawa Pening Abstract Lake Rawa Pening has a function as a natural reservoir that is used for hydropower plants, raw water, irrigation, fisheries, tourism and maintenance of the Tuntang River. The problems in Lake Rawa Pening is sedimentation which has an impact on decreasing storage capacity. Because of the current condition of Lake Rawa Pening, efforts are needed to improve the use of Lake Rawa Pening to support irrigation, fisheries, tourism, raw water supply and power generation. The purpose of this study was to analyze the increase in the utilization of Lake Rawa Pening. Lake Rawa Pening is a natural reservoir, does not have intake and spillway like ather reservoirs in general. The outflow arrangement from the lake is at Jelok Weir which is ± 5 km from the lake outlet. Therefore, increasing the use of lakes will be carried out by building intake and spillway so that release can be adjusted according to the demand. The stages of the analysis carried out are water demand analysis, water availability analysis, sedimentation rate analysis, storage needs analysis and performance analysis. Based on the results of the analysis of increasing utilization of Lake Rawa Pening, it can be done by building intake at an elevation +460.5 masl and spillway at elevation of +462.72 masl. In this condition, an effective storage capacity of 31.9 million m3, a dead storage capacity of 1,264 million m3 and a storage for fisheries and tourism of 10.311 million m3 can be provided, with performance of 89%.Keywords: Sedimentation, Increased use of the lake, Lake Rawa Pening
Co-Authors Ahmad Zaki Romadhoni Albert N. Tristanto Albert Nico Tristanto Amir Hadziq Fahmi Anisa R. Rahardiyanti Benson Limbong Bramantyo Herawanto Danang Miftayugi Dhanang Samatha Putra Djoko Legono Dwi Kurniani Dyah Anggraini Festi Alvi Rahmawati Hendri Wijaya Hendy Adiyat Nugraha Ifan Nasution Intan Savera Damayanti Khoirul Murod Lina Dwi Damayanti Maemonah, Maemonah Muhammad Hafiz Adilla Mushthofa Pranoto SA Pranoto Samto Atmodjo Pratono Samto Atmojo Rasita Mulyati Reza Kandriani Ricky Zefri Ricky Zefri S. Suripin Salamun Salamun Salamun Salamun Sriyana Sriyana Suharyanto Suharyanto Suharyanto Suripin Suripin Suripin Suseno Darsono Sutarto Edhisono Totok Wiji Sugiarto Vicky Aswady Suryana Zelly Rinaldi Zelly Rinaldi