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All Journal Jurnal Teknologi Mineral dan Batubara Indonesian Mining Journal Jurnal Teknologi Mineral dan Batubara Indonesian Mining Journal
Irvan Sophian
Fakultas Teknik Geologi, Universitas Padjadjaran
Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Energy Engineering Environmental Science Materials Science & Nanotechnology

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KEMAMPUGALIAN KUARI ANDESIT GUNUNG GEULIS, KECAMATAN JATINANGOR, KABUPATEN SUMEDANG, PROVINSI JAWA BARAT Mochamad Muslim Taufiq; Irvan Sophian; Nur Khoirullah; Zulfialdi Zakaria
Jurnal Teknologi Mineral dan Batubara Vol 18, No 2 (2022): Jurnal Teknologi Mineral dan Batubara Edisi Mei 2022
Publisher : Puslitbang tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol18.No2.2022.1257

Abstract

Kebutuhan bahan baku batu andesit semakin meningkat seiring dengan perkembangan dan percepatan infrastruktur di Indonesia. Batu andesit dapat dimanfaatkan sebagai bahan baku dalam pembuatan trotoar jalan, pondasi bangunan atau dapat dijadikan sebagai bahan campuran beton. Dalam kegiatan penambangan batu andesit, diperlukan analisis untuk ketepatan penggunaan metode penambangan agar tercipta usaha pertambangan yang berdaya guna, menunjang efektivitas dan efesiensi pekerjaan serta biaya operasional. Penelitian ini dilakukan untuk mengetahui kelas massa batuan, tingkat kemampugalian batuan dan rekomendasi bentuk lereng untuk kegiatan penambangan agar dapat berjalan dengan efektif dan efisien. Metode penelitian yang digunakan adalah klasifikasi geomekanik dengan sistem rock mass rating (RMR), slope mass rating (SMR) dan analisis kemampugalian batuan. Berdasarkan klasifikasi geomekanik tersebut, diketahui kelas massa batuan memiliki kategori good rock dengan nilai RMR 69 – 79 dan SMR 53° - 65°. Metode penggalian yang disarankan berupa ripping-blasting.
THE APPLICATION OF FAILURE METHOD PROBABILITY FOR ANALYZING IN PIT DUMP STABILITY AT WEST BLOCK ‘X’ PIT PT BERAU COAL - EAST KALIMANTAN Yan Adriansyah; Rifqi Dwi Saprana; Irvan Sophian; Nur Khoirullah
Indonesian Mining Journal Vol 24, No 2 (2021): INDONESIAN MINING JOURNAL, Vol. 24 No. 2, October 2021
Publisher : Puslitbang tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol24.No2.2021.1217

Abstract

West Block 'X' pit is one of the coal mining locations operated by the Lati Mine Operation – PT Berau Coal. Administratively, the Lati Mine is located as part of Berau Regency – East Kalimantan. The study area is located at the north side of the concession, in a syncline fold structure zone. The disposal design in this area needs to special attention from slope stability aspect due it is located on the wing of a mega syncline with a certain slope and constituent of unconsolidated materials. The pit design needs to be stable. The purpose of this study is to determine the level of stability of the in-pit dump by analyzing the current in-pit dump stability based on the value of the safety factor (FS) and the probability of failure (PoF). The method used in this study is a probabilistic analysis of slope stability based on the Morgenstern-Price method to obtain the value of the safety factor and the probability of failure. The study results show that the slope is in the safe category (stable slope) in the range of PoF values 0 – 1%, marginal slope 1 – 12%, and unstable slope above 12%. Based on such as results, it is necessary to modify the slope geometry categorized as unstable to carry out mine operation safely underneath the toe of slope.
KEMAMPUGALIAN KUARI ANDESIT GUNUNG GEULIS, KECAMATAN JATINANGOR, KABUPATEN SUMEDANG, PROVINSI JAWA BARAT Mochamad Muslim Taufiq; Irvan Sophian; Nur Khoirullah; Zulfialdi Zakaria
Jurnal Teknologi Mineral dan Batubara Vol 18 No 2 (2022): Jurnal Teknologi Mineral dan Batubara Edisi Mei 2022
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol18.No2.2022.1257

Abstract

Kebutuhan bahan baku batu andesit semakin meningkat seiring dengan perkembangan dan percepatan infrastruktur di Indonesia. Batu andesit dapat dimanfaatkan sebagai bahan baku dalam pembuatan trotoar jalan, pondasi bangunan atau dapat dijadikan sebagai bahan campuran beton. Dalam kegiatan penambangan batu andesit, diperlukan analisis untuk ketepatan penggunaan metode penambangan agar tercipta usaha pertambangan yang berdaya guna, menunjang efektivitas dan efesiensi pekerjaan serta biaya operasional. Penelitian ini dilakukan untuk mengetahui kelas massa batuan, tingkat kemampugalian batuan dan rekomendasi bentuk lereng untuk kegiatan penambangan agar dapat berjalan dengan efektif dan efisien. Metode penelitian yang digunakan adalah klasifikasi geomekanik dengan sistem rock mass rating (RMR), slope mass rating (SMR) dan analisis kemampugalian batuan. Berdasarkan klasifikasi geomekanik tersebut, diketahui kelas massa batuan memiliki kategori good rock dengan nilai RMR 69 – 79 dan SMR 53° - 65°. Metode penggalian yang disarankan berupa ripping-blasting.
THE APPLICATION OF FAILURE METHOD PROBABILITY FOR ANALYZING IN PIT DUMP STABILITY AT WEST BLOCK ‘X’ PIT PT BERAU COAL - EAST KALIMANTAN Yan Adriansyah; Rifqi Dwi Saprana; Irvan Sophian; Nur Khoirullah
Indonesian Mining Journal Vol 24 No 2 (2021): INDONESIAN MINING JOURNAL, Vol. 24 No. 2, October 2021
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol24.No2.2021.1217

Abstract

West Block 'X' pit is one of the coal mining locations operated by the Lati Mine Operation – PT Berau Coal. Administratively, the Lati Mine is located as part of Berau Regency – East Kalimantan. The study area is located at the north side of the concession, in a syncline fold structure zone. The disposal design in this area needs to special attention from slope stability aspect due it is located on the wing of a mega syncline with a certain slope and constituent of unconsolidated materials. The pit design needs to be stable. The purpose of this study is to determine the level of stability of the in-pit dump by analyzing the current in-pit dump stability based on the value of the safety factor (FS) and the probability of failure (PoF). The method used in this study is a probabilistic analysis of slope stability based on the Morgenstern-Price method to obtain the value of the safety factor and the probability of failure. The study results show that the slope is in the safe category (stable slope) in the range of PoF values 0 – 1%, marginal slope 1 – 12%, and unstable slope above 12%. Based on such as results, it is necessary to modify the slope geometry categorized as unstable to carry out mine operation safely underneath the toe of slope.
Co-Authors Mochamad Muslim Taufiq Nur Khoirullah Rifqi Dwi Saprana Yan Adriansyah Zulfialdi Zakaria