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All Journal TAMBANG Jurnal Pengabdian Kepada Masyarakat Universitas Bangka Belitung PROMINE Logista: Jurnal Ilmiah Pengabdian Kepada Masyarakat Jurnal Himasapta MINERAL
EPSB Taman Tono
Jurusan Teknik Pertambangan, Fakultas Sains Dan Teknik, Universitas Bangka Belitung
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Kajian kestabilan lereng menggunakan metode kesetimbangan batas di pit C5 area bidadari blok mayang Kusuma, Dimas Dian; Irvani, Irvani; Tono, Taman
Jurnal Himasapta Vol 9, No 1 (2024): Jurnal Himasapta Volume 9 Nomor 01 April 2024
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jhs.v9i1.9516

Abstract

PT Menara Cipta Mulia (PT MCM) merupakan perusahaan bergerak dibidang pertambangan timah terintegrasi dan beroperasi di kawasan industri Kelapa Kampit, Kecamatan Belitung Timur. Berdasarkan survei pendahuluan pertambangan PT MCM pernah terjadi longsor di area lereng serta pada area Bidadari Blok Mayang masih banyak lereng berpotensi terjadinya longsoran dan perlu adanya penelitian yang mengkaji kondisi kestabilan lereng sebagai dasar dalam menetapkan geometri bukaan tambang, guna menghindari gangguan produksi dan potensi bencana yang mungkin terjadi. Analisis kestabilan lereng pada penelitian ini menggunakan metode keseimbangan batas Bishop yang disederhanakan, penggunaan metode ini dikarenakan longsoran yang terjadi berpotensi terjadinya longsoran busur karena banyak terdapat rekahan. Metode ini memenuhi kesetimbangan gaya pada arah vertikal dan kesetimbangan momen pada titik pusat lingkaran runtuh. Adapun hasil analisis kestabilan lereng dari evaluasi desain geometri lereng keseluruhan kondisi dinamis dengan beban seismik horizontal sebesar 0,056 gal dan beban excavator 55,73 kN/m2 pada penampang A–A’ didapatkan nilai FK lereng sebesar 1,205 dengan PK 24,5%, penampang B–B’ didapatkan nilai FK lereng sebesar 1,514 dengan PK 5,8 %, penampang C–C’ didapatkan nilai FK lereng sebesar 1,547 dengan PK 3,3%, dan pada penampang D–D’ didapatkan FK lereng sebesar 1,250 dengan PK 21,1%.
Interpretasi Material Pada Rancang Bak Ukur Skala Laboratorium Dengan Pendekatan Konfigurasi Wenner, Wenner – Schlumberger dan Dipole-dipole: Material Interpretation in Laboratory Scale Measurement Design Using Wenner, Wenner–Schlumberger and Dipole-dipole Configuration Approaches Guskarnali, Guskarnali; Oktarianty, Haslen; Irvani, Irvani; Tono, E.P.S.B. Taman; Andini, Delita Ega
MINERAL Vol 8 No 2 (2023): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v8i2.4958

Abstract

Geoelectric measurements have been carried out using multichannel ResistivityMeter (Geores) tools with Wenner, Wenner-Schlumberger, and Dipole-dipole Configuration approaches on the influence of materials arranged in a laboratory-scale measuring tub design with dimensions of 194x184x80 cm. The measured method is the variation in resistivity value against each trajectory of the material. The method used is the variation of resistivity values for each path of the material that has been arranged in a laboratory scale measuring design. Geoelectric measurements were carried out on 7 lines (5 line in the West-East direction and 2 line in the North-South direction). The spacing between the electrodes of each line is 10 cm with 16 electrodes in one line so that each line has a length of 160 cm or 1.6 m which corresponds to the length and width dimensions of a laboratory scale measuring design. The electrode arrangement parameters are constant with respect to changes in the configuration selected from the geores parameters during geoelectric measurements. The measurement results showed that the identified depth reached 31.2 cm. The low resistivity value category has an interval of 374-4,397 ohm.meters at a depth of 0-12.5 cm, which is the influence of building sand material containing water and soil, while the depth interval is 12.5 - 31.2 cm ohm.meters (material category that is influenced by 2 iron rods, tin tailings sand, granite, gravel) with resistivity values ranging from 12,378–67,498 ohm.meters. From experiments on the influence of the resistivity values of the three Wenner, Wenner-Schlumberger, and Dipole-dipole configurations, it was obtained that the smallest absolute error resistivity value in the Wenner configuration was 5.01% against the overall average absolute error resistivity value of 10.16%.
Identifikasi Batuan Pembentuk Air Asam Tambang Pada Pit Mayang Menggunakan Uji Statik di PT Menara Cipta Mulia: Identification Of Acid Mine Water-Forming Rocks In Pit Mayang Using Static Tests At PT Menara Cipta Mulia Aulia, Nur Fajri; Andini, Delita Ega; Pitulima, Janiar; Tono, E.P.S.B. Taman
MINERAL Vol 10 No 2 (2025): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/gkdja461

Abstract

Mine Acid Water is one of the impacts of the mining industry that must be handled seriously because it can cause environmental quality degradation. The factor for the formation of AAT is due to the presence of sulfide minerals in the rock. It is necessary to prevent the formation of AAT by identifying rocks that are Potential Acid Forming (PAF) and Non Acid Forming (NAF). Identification of an AAT is carried out by static test. The research method uses quantitative data in the form of rock sampling with full coring drilling and conducting static tests in the laboratory. The results of this study were M01 samples (white sandstone) with ANC values of 1.7 KgH2SO4 /ton, NAG pH 6.63, Total Sulfur <0.01%, pH of paste 7.22 and NAPP -1.4 KgH2SO4 /ton. The sample was M02 (sand) with ANC value of 1 KgH2SO4 /ton, NAG pH 6.63, Total Sulfur <0.01%, pH of paste 7.37 and NAPP -0.7 KgH2SO4 /ton. The sample was M03 (black sandstone) with ANC value of 1.4 KgH2SO4 /ton, NAG pH 4.41, Total Sulfur 0.06%, pasta pH 6.89 and NAPP 0.4 KgH2SO4 /ton. The geochemical identification of rocks at PT Menara Cipta Mulia has 2 samples, namely M01 (white sandstone) and M02 (sand) samples that are Non Acid Forming (NAF) and 1 sample, namely M03 (black sandstone) samples that are Potential Acid Forming (PAF).
Co-Authors 0DI RIPANDA Ahmad Reza Setiawan Aleo Saputra Alfitri Rosita Alfitri Rosita Amri Tampubolon Anisa Indriawati Aulia, Nur Fajri Awwab Hafizh Ben Paulus Manurung1, Dede Seiawan Delita Ega Andini Desi Fatimah Dini Wulansari Eddy Ibrahim Eddy Ibrahim Eko Prayitno Ester Indah Sari Firmansyah Firmansyah Fitra Adreansyah Franto, Franto Gregorius Fredrick Guskarnali, Guskarnali Haslen Oktarianty Hendra Susanto Indra Yustian Ines Yuana Irvani Irvani Irvani, Irvani Irvani, Irvani Irvani, S.T., M.Eng., Irvani, Janiar Pitulima Kusuma, Dimas Dian M.Arief Adilah Maria Jeane Inggrid Monika P Handayani Muhamad Nasuhi Muhammad Rizki Pratama Oktarianty, Haslen Rajesta F. Wardana Reza Reza Vikram Rinaldi