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Budhi Setiawan
Program Studi Teknik Geologi, Universitas Sriwijaya
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Journal : MINERAL

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Identifikasi Peningkatan Strength Factor Dengan Metode Q-System Pada Terowongan Tambang Bawah Tanah Daerah Perambahan, Kota Sawahlunto, Sumatera Barat Pebby Putra Juenda; Harnani Harnani; Budhi Setiawan
MINERAL Vol 7 No 2 (2022): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v7i2.3418

Abstract

Underground mining activities (Undergound Mining) at PT Allied Indo Coal Jaya Encroachment area, Sawahlunto City has the risk of subsidence due to reduced soil carrying capacity due to excavation of underground mine openings. The excavation of underground mine openings will result in disruption of the stability of the area such as roof collapse, rib spalling, and floor heave. This research was conducted in 2 research locations, namely Tunnel 6 Seam B and Tunnel 3 Seam C which aims to determine the recommendation of a buffer system in underground mine openings (Tunnel) by analyzing the geomechanical value of rocks using the Rock Tunnelling Quality Index (Q-System) method. ) so that the Strength Factor value increases. Data collection methods were carried out by field observation and laboratory testing, while data processing used Phase 8.0 software with Mohr-Coulomb failure criteria. The results of calculations and data processing showed that the Strength Factor value in Tunnel 6 Seam B was 1,04 (relatively stable) and Tunnel 3 Seam C was 0,84 (unstable). These results indicate that Tunnel 6 Seam B and Tunnel 3 Seam C must be supported by a buffer system. After the buffering system was carried out the Strength Factor value of Tunnel 6 Seam B increased to 1,59 (stable) and Tunnel 3 Seam C increased to 1,63 (stable).
Co-Authors Abdurrahman Hanif Albaihaqi Abimanyu, Gilang Agus Rahman Alamsyah Aldri Frinaldi Alfiati Alfuazri, M. Gilang Ama, Fuad Andayani Andayani Andayani Andili, Agshal Almachzumi Ani Rakhmawati Arief Setyawan Arieffiandhany, Riezal Asof, H. Marwan Atikah Anindyarini Atthoriq, Muhammad Hafidz Bakri Bakri Cahyaningrum, Fitria Chaesar, Ari Suryawati Secio Chafit Ulya Charlos Togi Stevanus, Charlos Togi Dedi Rohendi Dianastiti, Firstya Evi Dyah Hastuti, Endang Wiwik Eddy Ibrahim Edi Riawan Edy Sutriyono Ernawati Faradila, Nanda Argi Noer Farahdila, Silvie Felicity, Felicity Fitriani, Aula Gallant Dwi Pangestu Nugroho Akbar Gurada Capah, Ade Indra Harfiandri, Muhammad Said Harnani Harnani Hartati, Restiana Dwi Haryanti, Rini Dwi Hastuti, Nuri Puji Hermawan, Muhammad Alfian Hibatullah, Kevin Nabil Islam, Muhammad Izzul Ismaryanto, Ismaryanto KAMIL, FADHELLATUL Kartika Ishartadiati Karyadi, Rian Khakim, Mokhamad Yusup Nur Kundharu Saddhono Kurniawan, Deviyanto Landia, Karmila Putri Lusiani Tjandra Marswati, Ceria Masfufatun Masfufatun Muhammad Rohmadi Muhammad Taufik Toha Mukhlis, Muhammad Munib Ikhwatun Iman Murtianingsih Murtianingsih, Murtianingsih Nardi, Rajhi Febri Nugraheni Eko Wardani Oman Abdurahman Pebby Putra Juenda Pebrianto, Rosihan Permana, Lano Adhitya Pranata, Ridho Pratika Yuhyi Hernanda Putri, Atika Nabila Putri, Helen Dwi Putri, Zahrah Belinda RAHARJO, BUDIONO Rahaya, Ivana Septia Raheni Suhita Rahmatullah, Arif Rifki Aditya, Rifki Rio, Ferdinan Rizki, Kurnia Rahma Rizkie, Dania Rosihan, Pebrianto Sabaruddin Sabaruddin Safrihady, Safrihady Santoso, Nugroho Ponco Sari, Fatrina Aprilia Sarwiji Suwandi Setyaningsih, Arinda Oktariski Simanjuntak, Presli Panusunan Slamet Subiyantoro Sumarwati Suyeda, Fadhil D. Utami, Sri Lestari Wahdini, Lisa Wahyu Wardana, Muhammad Aditya Wisnu Wicaksono, M. Dwiki Satrio Wijaya, Wildan Maulana Wulandari, Atik Sri Wulandari, Zhalsa Yogie Zulkurnia Rochmana Yuliningsih, Yuliningsih