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All Journal JISTECH: Journal of Information Science and Technology Prosiding Seminar Teknologi Kebumian dan Kelautan (SEMITAN INTAN Jurnal Penelitian Tambang
Laitupa, Karmila
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Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering

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ANALISA STABILITAS TEBING SUNGAI MENGGUNAKAN METODE KESETIMBANGAN BATAS DAN METODE ELEMEN HINGGA Tahan, Yosef Marchiano; Koesnaryo, S; Dwinagara, Barlian; Laitupa, Karmila; Tugo, Laode Jonas
Prosiding Seminar Teknologi Kebumian dan Kelautan Vol 1, No 1 (2019)
Publisher : Prosiding Seminar Teknologi Kebumian dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1606.844 KB)

Abstract

PT. Sari Mulia dan PT. Sarana Jaya Makmur merupakan perusahaan yang memiliki Wilayah Ijin Usaha Pertambangan (WIUP) Operasi Produksi (OP) Sirtu di aliran Sungai Gendol dengan luas masing-masing yaitu 2,25 ha yang berada pada Dusun Kalitengah Kidul, Desa Glagaharjo dan Desa Kepuharjo, Kecamatan Cangkringan, Kabupaten Sleman. Pada 2 April 2018 telah terjadi longsoran Tebing Sungai Gendol sebelah timur yang mencakup WIUP OP kedua perusahaan tersebut yang mengakibatkan korban jiwa 2 orang supir truk dan 2 warga sekitar luka-luka.  Tebing sungai yang longsor memiliki tinggi 60 m, panjang longsoran 52 m, dengan kemiringan tebing 83°. Data-data yang digunakan dalam studi kasus ini merupakan data primer dan data sekunder. Pengumpulan data dilakukan dengan pengamatan langsung dilapangan dan metode literatur. Analisa ini menggunakan  metode kesetimbangan batas (limit equilibrium methode) yaitu bishop dan metode elemen hingga(finite element methode). Analisa untuk mengetahui kestabilan lereng ini selanjutnya menggunakan suatu program geoteknik yaitu Slide Vesion.6 dan Phase2 Version 8 dari rocscience. Tolak ukur kestabilan tebing adalah FK ? 1,3. Berdasarkan hasil pengamatan di lapangan terdapat tiga litologi yaitu pada kedalaman 10 m berupa tanah lanau lempung lunak, pada kedalaman 20 m berupa tanah lanau lempung berpasir, pada kedalaman 30 m berupa pasir dan batupasir, menggunakan model kriteria keruntuhan Mohr-Coulomb. Tindakan stabilitas tebing dilakukan pada litologi dengan kedalaman 10 m dengan dua alternatif yaitu pengurangan sudut kemiringan dan pembuatan berm, hasil yang didapatkan bahwa metode elemen hingga dengan pembuatan berm 8 m, sudut 31 0, tinggi 4 m dan 6 m menghasilkan FK 1,44 dipilih untuk menangani potensi longsoran tebing.
APLIKASI METODE GEOLISTRIK UNTUK MENENTUKAN AKUIFER AIR TANAH DI KAMPUNG HORNA BARU DAN KAMPUNG MUTURI DISTRIK MANIMERI KABUPATEN TELUK BINTUNI PROVINSI PAPUA BARAT: APPLICATION OF THE GEOELECTRIC METHOD TO DETERMINE THE GROUNDWATER AQUIFER IN HORNA BARU VILLAGE AND MUTURI VILLAGE, MANIMERI DISTRICT BINTUNI BAY DISTRICT WEST PAPUA PROVINCE Laitupa, Karmila; Pangkung, Yulius G.; Supit, Jance M.
JISTECH: Journal of Information Science and Technology Vol 6 No 1 (2014): Februari 2014
Publisher : Universitas Papua

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Abstract

Geolistrik is one of the geophysical method used in shallow exploration. In working principle of the method geolistrik is studying the flow of electricity in the Earth, and how to detect it at the Earth's surface. This research aims to determine the water bearer layer, layout and depth as well as the type of aquifer groundwater Kampung Horna Baru and Kampung Muturi District Manimeri District of West Papua Province Bintuni Straits Bay with the method of resistivity (Resistivity). Resistivity method based on Ohm's law, aims to find out the type of coating the rocks based on the distribution of the resistivity value on each layer. Data measurement results in the field of potential noun and current can be used to calculate the price of a pseudo resistivity. After pseudo resistivity value obtained then incorporated into the software, and data res2dinv spaced electrodes and data datum points for knowing the value of resistivity, the RMSE and depth of each layer with a 2D model are vetically through a process of inverse. Geolistrik research results indicate that the aquifer groundwater Kampung Horna Baru and Kampung Muturi District Manimeri district of Bay of Bintuni Straits, has a varied range of resistivity of 0.183 meters% uFFFD Ohm. 3714 Ohm. ft. On tracks 2, 3, 5 and 6 in Kampung Horna Baru at a depth of 4.3% uFFFD 27.1 m. Whereas in Kampung Muturi on tracks 8 and 9 with a depth of 13.1-27.1 m.
PREDICTION OF SETTLEMENT AND LAND USE CHANGES ON MANSINAM ISLAND FROM 2025 TO 2031 USING THE CELLULAR AUTOMATA SIMULATION METHOD Valderama, Aldi Fariz; Taplo, Yulianto; Riansyah, Ardi; Habibi, Syavitra L. P.; Siagian, Adi Frianda; Popoi, Taufik Syahrul; Nasir, Muh. Irwana Segara; Iba, Amos; Laitupa, Karmila
INTAN Jurnal Penelitian Tambang Vol. 8 No. 2 (2025): INTAN: Jurnal Penelitian Tambang
Publisher : Program Studi S1 Teknik Pertambangan Fakultas Teknik Pertambangan dan Perminyakan Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56139/intan.v8i2.337

Abstract

Indonesia, as an archipelagic country, faces development challenges on its small islands, including Mansinam Island. This study aims to predict settlement and land cover changes on Mansinam Island for the period 2025–2031. The data used were surface reflectance-corrected Sentinel-2 imagery with a spatial resolution of 10 meters. The imagery was acquired in 2019, 2022, and 2025. Land cover classification was performed using a supervised classification method with the minimum distance algorithm, achieving an accuracy of 87.82%. Land change prediction modeling was carried out through land use change analysis and simulation using the Cellular Automata (CA) and Artificial Neural Network-Cellular Automata (ANN-CA) models. The model produced a Percent of Correctness of 89.96%. The simulation results indicate that from 2025 to 2031 there will be no significant land change, with transformed land areas of 43.85 ha in 2025, 42.62 ha in 2028, and 42.64 ha in 2031. The results also show that the development rate on Mansinam Island tends to slow down.
Co-Authors Barlian Dwinagara Habibi, Syavitra L. P. Iba, Amos Jance M Supit Koesnaryo, S Nasir, Muh. Irwana Segara Pangkung, Yulius G. Popoi, Taufik Syahrul Riansyah, Ardi Siagian, Adi Frianda Tahan, Yosef Marchiano Taplo, Yulianto Tugo, Laode Jonas Valderama, Aldi Fariz