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Evi Nur Cahya
Departemen Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya, Malang, Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Transportation Other

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Journal : Jurnal Rekayasa Sipil dan Lingkungan

 1 
Analisis Numerik Rembesan dan Analisis Geofisika Dam Ranu Klakah Assajjad, Nurrohman Adi; Asmaranto, Runi; Cahya, Evi Nur
Jurnal Rekayasa Sipil dan Lingkungan Vol 8 No 1 (2024): Jurnal Rekayasa Sipil dan Lingkungan
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jrsl.v8i1.48628

Abstract

Abstract Ranu Klakah Dam is an old weir that is indicated to have seepage in its downstream section. The purpose of this study is to numerically analyze seepage that occurs due to piping at Ranu Klakah Dam, including the potential location of seepage points. Geophysical analysis was conducted to visually see the seepage position on the body of Ranu Klakah Dam so that appropriate repairs could be made. Numerical analysis was conducted with the help of the Geostudio SEEP/W application, while geophysical analysis was conducted using ADMT geoelectric and ground-penetrating radar tested at the research location to interpret the subsurface layer. From the analysis, we obtained a seepage discharge of 4.38 x 10-8 m3/dt, which is still smaller than the permitted seepage discharge of 1% of the average river discharge of 0.131 m3/dt. The value of the safety factor for piping in 5 m high water level conditions is 5.01 > 4, which is the limit of the safety value. From the results of the geophysical analysis, it is known that the seepage zone is located at the baffle pillar building between the flushing door and the sluice gate at a distance of about 6–8 m from the vehicle floor on the bridge above the gate, so that repairs can be focused at this point. Thus, seepage that occurs due to piping downstream still meets the established safety requirements. Keywords: Geoelectric, Ground Penetrating Radar, piping, seepage. Abstrak Dam Ranu Klakah merupakan bendung lama yang terindikasi terjadi rembesan pada bagian hilirnya. Tujuan dari studi ini adalah menganalisa secara numeris rembesan yang terjadi akibat piping pada Dam Ranu Klakah, termasuk potensi lokasi titik rembesan. Analisa geofisika dilakukan untuk dapat melihat secara visual posisi rembesan pada tubuh Dam Ranu Klakah, untuk dapat dilakukan perbaikan secara tepat. Analisa numerik dilakukan dengan bantuan aplikasi Geostudio SEEP/W, sedangkan analisa geofisika dilakukan dengan menggunakan Geolistrik ADMT dan Ground Penetrating Radar yang diujikan pada lokasi penelitian guna menginterpretasi lapisan bawah permukaan. Dari analisa yang dilakukan, didapatkan hasil debit rembesan sebesar 4,38 x 10-8 m3/dt, yang nilainya masih lebih kecil dari debit rembesan yang diizinkan sebesar 1% dari debit rata-rata Sungai yakni sebesar 0,131 m3/dt. Nilai faktor keamanan terhadap piping untuk kondisi muka air setinggi 5 m yaitu 5,01 > 4, sebagai batas nilai keamanan. Dari hasil analisa geofisika, diketahui zona rembesan terletak pada bangunan pilar penyekat antara pintu pembilas dengan pintu air sekitar jarak 6 – 8 m dari lantai kendaraan pada jembatan di atas pintu, sehingga perbaikan dapat difokuskan pada titik ini. Dengan demikian, rembesan yang terjadi akibat piping pada bagian hilir, masih memenuhi syarat keamanan yang ditetapkan. Kata kunci: Geolistrik, Ground Penetrating Radar, piping, rembesan.
Co-Authors -, Rizka Anindya Nurus Shobah Aditya Wibowo Afan Allail Rofikha Alamsyah, Muh Arsyil Alfiko Rail Prameswara Andawayanti, Ussy Andre Primantyo Hermawan Arissaputra, Andry Sofyan Aritonang, Samuel Yosema Ariza Julian Hakim Arrosyad, Muhammad Arya Pradamansyah Putra Ashari, Syaiyidati Fitri Nur Khoiriah Assajjad, Nurrohman Adi Aulia, Nanda Daffa Muhammad Faeyza Delivean Rakha Dermawan Denny Ahmad Fauzi Devi, Agung Ayu Gayatri Dharyatiputri, Jihan Faradillah Dian Sisinggih Donny Harisuseno Eka Juli Dwi Mulyawati Elang Timur M. Patih Ragananda Eliana Renate Simanungkalit Emma Yuliani Ery Suhartanto Eva Arifi Eva Resmani Fakhruddin, Daffa Budi Fakhrulloh, Ahzar Febrianto, Ridwan Febriyanti Maulina Fikhoir, Yalim Firdaus, Adam Wahyu Fitriyasari, Ammy Geraldine, Monica Odelya Gunawan, Alif Ramadhani Medisia Putri Guntoro, Dani Eko Guntoro, Dani Eko Hartanto, Tomy Dwi Heri Suprijanto Hidayat, Muhammad Nurjati Hidayatulloh, Ahmad Yusuf Irenne Ismayanti Romadona Jadfan Sidqi Fidari Kiki Windi Safitri Kistanti, Ida Fitri Komala Candra, Yoggi Fracasnofa Kurniawan, Dita Cahya Linda Prasetyorini Listyana, Kurnia Ulfi Lu'luil Maknun Lufti Akbar M. Amar Sajali M. Janu Ismoyo M. Latiefudin Taruna Pratama Manalu, Marchell Geovande Marsudi, Suwanto Megantoro, Chrisnada Virgiawan Misbachussudur, Mochamad Moh. Sholichin Mohammad Bisri Muchammad Zidan Muhammad Azhar Thirafi Say Muhammad Fahmi Fawji Muhammad iqbal Muhammad, Aminulloh Muhammad, Dien Azmi Nur Sholawatini Nurjati Hidayat, Muhammad Pangestika, Erina Riski Pitojo Tri Juwono Pitojo Tri Juwono Pramudya, Rafi Rizky Pratama, Ivan Kurnia Putra, Boy Adi Qodriah Dianasari qoidulhaq, fayyadh Rachmat, Alvian Rahman, Muhammad Adhia Rahmi, Nuri Aisyah Raya Abdullah Resmani, Eva Reza Indra Rispiningati, Rispiningati Riyanto Haribowo Riyanto Haribowo Rosamike, Mega Okvita Karinda Runi Asmaranto Sholawatini, Nur Sholichin, Moh. Sovereign, Sefaca Markchel Sri Wahyuni Sri Wahyuni Sulthon Arsyad Aifudin Sumiadi, Sumiadi Suwanto Marsudi Suwanto Marsudi Suwanto Marsudi Syafiq, Gilang Ussy Andawayanti Ussy Andawayanti Very Dermawan Very Dermawan Very Dermawan Wardana, Yoga Okta Wicaksana, Chandra Yoga Wicaksono, Dadang Teguh Wijayanto, Achsin Yusron, Vidia Fitri Amalia Zakariya, Ahmad Fatah