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All Journal Journal of Science and Engineering Journal Of Khairun Community Services Sustainability (STPP) Theory, Practice and Policy
Amrih Halil
Program Studi Teknik Pertambangan, Fakultas Teknik, Universitas Khairun
Agriculture, Biological Sciences & Forestry Arts Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences Transportation Other

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Journal : Journal of Science and Engineering

 1 
KAJIAN POTENSI LONGSOR LERENG GALIAN CURAM DI KELURAHAN KALUMATA KOTA TERNATE MENGGUNAKAN GEOLISTRIK Jamalun Togubu; Firman Firman; Anas Abdul Latif; Amrih Halil; Samsulbahri M Madjid
Journal of Science and Engineering Vol 5, No 2 (2022): Journal Of Science And Engineering (JOSAE)
Publisher : Fakultas Teknik Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/josae.v5i2.5240

Abstract

The study of the potential for landslides on steep excavation slopes in Kalumata Village, Ternate City using geoelectricity is important to do. The location of the sirtu mining excavation which tends to be steep and close to residential areas is urgent to know the type of lithology so as to facilitate recommendations for handling to be carried out. The purpose of this study was to determine the lithological composition of the material from tracks 1, 2, and 3 along the steep excavation slope using the geoelectric resistivity Sclumberger configuration method. In addition, knowing the potential for landslides that will occur if there is no handling of steep slopes. This research is a quantitative type of field research. The research location is in the formation of lahar deposits (Gtla) and pyroclastic debris (pr) deposits. Trajectory 1 dominant lithology is 17.52 m of sand, andesite rock as an interlude and on the bedrock it is characterized by large resistivity (3241 m) while the top layer is clay type overburden. The 2 lithological paths consist of overburden, sand (7.82 m), silt (10.5 m), and andesite bedrock (resistivity 2811 m). The lithology of track 3 consists of overburden, andesite, sand (16.9 m), and andesite bedrock (4575 m). Lithology that tends to landslide in the field is overburden filled with sedimentary material in the form of clay, silt, and sandy silt (resistivity 1.5-114 m). Sand lithology with a resistivity of 479-855 m is very susceptible to landslides. Another factor causing landslides is the slope of the excavation which tends to be steep (> 60o). Keywords: Kalumata Village, Sclumberger configuration, lithology, landslide, sand
STUDI INTERPRETASI LAPISAN BAWAH PERMUKAAN TANAH DENGAN METODE GEOLISTRIK DI JALAN LINTAS SUBAIM-BULI KECAMATAN WASILE TIMUR KABUPATEN HALMAHERA TIMUR Amrih Halil; Arsal Tjina; Firman Firman; Alifianty Delila Imani Sumantri; Hilda Alkatiri
Journal of Science and Engineering Vol 6, No 1 (2023): JOURNAL OF SCIENCE AND ENGINEERING (JOSAE)
Publisher : Fakultas Teknik Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/josae.v6i1.6330

Abstract

Secara geologi, Pulau Halmahera mempunyai banyak pegunungan, sehingga sangat rentan sekali berpotensi longsor. Kabupaten Halmahera Timur merupakan salah satu lokasi dengan struktur tanah tidak kompak serta banyak lereng yang tidak stabil sehingga ada beberapa titik terjadi longsor. Tujuan dari penelitian ini yaitu untuk mengetahui susunan lapisan bawah permukaan tanah, pada lokasi jalan yang longsor di Kecamatan Wasile Timur dengan menggunakan metode geolistrik schlumberger. Pendugaan geolistrik ini dimaksudkan untuk memperoleh gambaran mengenai lapisan tanah di abwah permukaan dan kemungkinan terdapatnya lapisan pada kedalaman tertentu. Penelitian berlokasi di jalan lintas Subaim-Buli, Kecamatan Wasile Timur, Kabupaten Halmahera Timur, Provinsi Maluku Utara dan dilakukan selama 11 bulan.Dari hasil pembahasan dan analisa perhitungan maka dapat disimpulan bahwa secara geologi daerah lintasan 1 dan 2 terdapat di formasi bacan dengan jenis batuan tersusun atas batuan Gunung Api berupa Lava, Breksi dan Tufa sisipan Konglomerat dan Batupasir. Secara litologi lintasan 1 dan 2 masing-masing memiliki 4 perlapisan dengan kedalaman mencapai 25 m. Lintasan 1 terdiri dari 4 perlapisan: lapisan pertama aluvium ,lapisan ke 2 batupasir ,lapisan ke 3 batulanau , dan lapisan terakhir shale dengan nilai resistivitas antara 2.08-563Ωm. Lintasan 2 terdiri dari 4 perlapisan: lapisan pertama shale, lapisan ke 2 kerikil, lapisan ke 3 batulanau, dan lapisan terakhir shale, dengan nilai resistivitas antara 0.57s-1141Ωm.
Co-Authors Alifianty Delila Imani Sumantri Almun Madi Anas Abdul Latif Arbi Haya Arsal Tjina Firman Firman George Belly Sahetapy Hilda Alkatiri Jamalun Togubu Samsulbahri M Madjid Sari, Yetti Anita Syarifullah Bundang Wawan A.K Conoras