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Jurnal Geomine
Published by Universitas Muslim Indonesia
ISSN : 24432083     EISSN : 25412116     DOI : -
Core Subject : Science,
Earth & Planetary Sciences
Jurnal Geomine (JG) merupakan jurnal yang memuat artikel-artikel ilmiah yang mengkaji ilmu-ilmu dan pengembangan dalam bidang pertambangan, geologi dan geofisika. Jurnal Geomine (JG) memiliki No.ISSN : 2443-2083 (Cetak) dan No.ISSN : 2541-2116 (Online). Jurnal Geomine diterbitkan oleh Prodi Jurusan Teknik Pertambangan Fakultas Teknologi Industri Universitas Muslim Indonesia. Terbit 3 (tiga) kali dalam setahun pada Bulan April, Agustus dan Desember.
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Articles 230 Documents
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Analisis Penggunaan Balldeck pada Kegiatan Peledakan untuk Meminimalisir Flyrock Arif Nurwaskito; Rahmat Agam Putra; Abdul Salam Munir; Habibie Anwar; Firman Nullah Yusuf; Muhammad Idris Juradi; Suriyanto Bakri; Sitti Ratmi Nurhawaisyah; Citra Aulia Khalik; Nur Asmiani; Mubdiana Arifin; Jamal Rauf Husain
Jurnal Geomine Vol 10, No 3 (2022): Edisi Desember 2022
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jg.v10i3.1462

Abstract

Kegiatan peledakan akan menimbulkan dampak yang berisiko bagi lingkungan sekitar, salah satunya flyrock (batu terbang) hasil ledakan. Lemparan fragmen batuan yang melewati radius aman dapat merusak peralatan, mengakibatkan cidera, dan kehilangan nyawa pada manusia. Oleh karena itu digunakan balldeck sebagai instrumen tambahan untuk meminimalisir flyrock. Tujuan penelitian ini adalah untuk mengetahui ukuran geometri peledakan yang digunakan, mengetahui cara meminimalisir flyrock pada saat peledakan, dan mengetahui cara perhitungan hasil lemparan maksimal flyrock secara teoritis dengan penggunaan balldeck. Metode penelitian dilakukan dengan cara pengumpulan data berupa geometri peledakan, data jarak lemparan maksimum flyrock  sebelum dan setelah menggunakan balldeck. Hasil penelitian diperoleh hasil rata-rata volume geometri peledakan yaitu 46.231,94 BCM, hasil rata-rata lemparan maksimum flyrock sebelum menggunakan balldeck 149,1 m, hasil rata-rata lemparan maksimum flyrock menggunakan balldeck 58,7 m, dan hasil rata-rata jarak lemparan maksimum flyrock menggunakan balldeck berdasarkan teori Richard and Moore, yaitu 80,43 m (Face Burst) dan 59,54 m (Cratering ). Adapun faktor yang meminimalisir flyrock yaitu kedalaman lubang tidak dangkal, kolom stemming tidak pendek, dan juga penggunaan balldeck di dalam lubang bor. 
Karakterisasi Batubara Formasi Walanae Daerah Kaloling Kabupaten Sinjai Propinsi Sulawesi Selatan Anshariah Anshariah; Emi Prasetyawati Umar; Agus Ardianto Budiman; Hasbi Bakri; Alam Budiman Thamsi; Nurliah Jafar; Alfian Nawir; Andi Fadli Heriansyah; Muhamad Hardin Wakila; F Firdaus; Harwan Harwan
Jurnal Geomine Vol 10, No 3 (2022): Edisi Desember 2022
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jg.v10i3.1250

Abstract

Coal is a unique sedimentary rock, both in the process of formation and rock characteristics which are strongly influenced by the conditions of the depositional environment. Different depositional environments, the characteristics of the coal are different. The research method used in this research in the field is in the form of direct sampling in the field using the channel sampling ply by ply method, namely sampling by making channels on coal outcrops and taking samples that represent the lower, middle and upper layers of the coal seam to determine the average characteristics. The sample is then prepared to get a certain size and can be representative of the field sample. The prepared samples were then subjected to a proximate test to determine the moisture content, ash content, volatile matter and fixed carbon. Laboratory tests are carried out in the Lab. Analysis and Processing Hasanuddin University Makassar. The results of the proximate analysis  carried out show the coal characteristics of the Walanae Formation in the Kaloling Region which has a moisture content value that decreases from bottom to top with an average of 7.49%; coal ash content increased from bottom to top with an average value of 47.63% ash content; the value of volatile matter decreased from bottom to top with an average of 26.56% of volatile matter; and the value of fixed carbon which increases with increasing depth with an average value of 18.29%.
Kandungan dan Ketebalan Endapan Nikel Laterit di Kecamatan Langgikima Kabupaten Konawe Utara Provinsi Sulawesi Tenggara Hasria Hasria; Rino Erwin; Ali Okto; Bahdad Bahdad; Arisona Arisona; La Hamimu
Jurnal Geomine Vol 11, No 1 (2023): April 2023
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jg.v11i1.1069

Abstract

This study is located in Lameruru Village, Langgikima District, North Konawe Regency, Southeast Sulawesi Province. The research area consists of morphological units of low hills and hills with an altitude of 200 to 350 meters above sea level. This study aims to determine the morphological conditions and analyze the thickness of laterite nickel deposits based on the morphological conditions in the study area. The morphological observation method was based on morphometric analysis and morphographic analysis, while the thickness analysis of laterite nickel deposits was based on exploration drill data consisting of collar data, lithological data, survey data, and assay data. The analytical method used in this study is the XRF (X-Ray fluorescence) geochemical method to determine the elemental content based on the percentage content of the laterization zone in the study area. The results of the study show that the morphology in the study area was divided into low hills and hills with slightly sloping, sloping, slightly steep, and steep slopes. The thickness of laterite nickel deposits in the study area follows the shape of the topographical slope where in areas with a higher slope level the nickel deposits formed are thinner and the lower the slope level the thicker nickel deposits are formed.
Studi Perbandingan dan Hubungan Antara Densitas dan Kuat Tekan Tanah Laterit pada Lapisan Limonit dan Saprolit di Area Penambangan Nikel di Kecamatan Lasolo Rizki Kumalasari; La Ode Dzakir; Hariono Hariono; Muhamad Karnoha Amir
Jurnal Geomine Vol 11, No 1 (2023): April 2023
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jg.v11i1.1463

Abstract

Differences in the degree of weathering in the lateritic soil zoning will cause differences in the strength or compressive strength of the lateritic soil material. To find out the difference in strength or compressive strength of soil material, it is necessary to test the physical properties and mechanical properties of the soil material. This research activity aims to obtain information regarding the values of density and compressive strength and to determine the relationship between density and compressive strength of soil material in limonite and saprolite soil layers. From this research activity, it is known that the density value of the soil material in the limonite layer is greater than that of the saprolite layer, while the compressive strength value of the soil material in the limonite layer shows a higher compressive strength value compared to the saprolite layer. In addition, the results of this study, it is also known the relationship between density and compressive strength of lateritic soil, namely the greater the density value of the lateritic soil material, the greater the compressive strength value, and vice versa, the smaller the rock density value, the smaller the compressive strength value.
Pengaruh DBR (Debit Banjir Rencana) Terhadap Perancangan Model Saluran untuk Kebutuhan Sistem Penyaliran Tambang PT. Smart Rizqullah Berkah Muhamad Karnoha Amir; La Ode Dzakir; Hariono Hariono; Aksal Ramadhan Shaddad
Jurnal Geomine Vol 11, No 1 (2023): April 2023
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jg.v11i1.1246

Abstract

Drainage is a mine drainage channel that every mining company must carry out in fulfilling the implementation of good mining engineering principles. In ensuring that the channel design is following the mine drainage needs, it is necessary to consider several things, one of which is the planned flood discharge. This study focuses on looking at the effect of the planned flood discharge on the design of the drainage channel. The methodology used is the descriptive method, which is data collection based on regional characteristics. The study results were obtained based on several data analyses, namely hydrological risk, planned rainfall, catchment area, runoff discharge, and planned flood discharge. Based on the results of the analysis, the dimensions of the channel based on the runoff are obtained, namely, the depth of the channel is 2.73 meters, the surface width is 6.24 meters, the bottom width is 3.02 meters, the side cross-section width of the channel is 3.23 meters and the water level is 2.63 meters. After being correlated with the planned flood discharge, there is an increase in the average dimensions of 6.4% to a channel depth of 2.95 meters, a surface width of 6.64 meters, a base width of 3.22 meters, and a channel cross-sectional width of 3.43 meters and a face height. water 2.80 meters. Thus, in selecting the channel dimensions, it is recommended to use the channel dimensions correlated with the planned flood discharge to the runoff discharge.
Analisis Geohidrologi Limpasan Permukaan Menggunakan Sistem Informasi Geografis Bagian Hulu Sub Das Tangka Provinsi Sulawesi Selatan Rohaya Langkoke; Jamal Rauf Husain; Ilham Alimuddin; Faisal Faisal
Jurnal Geomine Vol 11, No 1 (2023): April 2023
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jg.v11i1.1621

Abstract

Water is the source of life so that makes water an important component. Geohydrological analysis of surface runoff aims to investigate changes in the geohydrological cycle due to geomorphological processes that turn water into surface runoff from previously seeping below the surface. This research uses the Bransby-William’s method in the analysis of runoff coefficients which consider the parameters of relief, soil infiltration, land cover, surface storage, and rainfall intensity. The research area is located in the upstream part of the Tangka sub-watershed, South Sulawesi Province, specifically at coordinates 5°07’58.9” – 5°17’23.1” South Latitude and 119° 52’ 45.2”- 120° 00’ 20.5” East Longitude.  Surface runoff is 48.87%, resulting in a large potential for flooding and landslides.  The surface flow discharge is 385,468 m3/second. 
Analisis Diskontinuitas Stabilitas Terowongan Bekas Bijih Mangan Kalilingseng Kulon Progo Berdasarkan Klasifikasi Massa Batuan Ardya Pramesti Putri Arindry; Singgih Saptono; Barlian Dwi Nagara; S Koesnaryo; D Haryanto
Jurnal Geomine Vol 11, No 1 (2023): April 2023
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jg.v11i1.1277

Abstract

The Kalilingseng Tunnel is an ex-mining manganese ore mine located in Ngruno Hamlet, Karangsari Village, Pengasih District, Kulon Progo Regency, Yogyakarta Province. Now, the tunnel has been planned to be used as a geotourism where the stability of the tunnel is very important to research. Therefore, this survey was conducted to analyze the discontinuity of the tunnel to simulate in the original Young's modulus value, a decrease of 75% and 50% to the strength factor value and to analyze whether there is an influence of the seismic factor on the displacement and the strength factor. From the results of the rock mass classification investigation by Hoek and Brown’s Rock Mass Rating, it was found that the strength factor value based on Finite Element Analysis with non-linier criterion failure was more than 2 where the results were categorized as safe without any support in the tunnel so that it could be used as a geotourism location.
Analisis Karakteristik Geokimia Batuan Potensi Pembentuk Air Asam Tambang Daerah Tanjung Kabupaten Bone Firman Nullah Yusuf; Andi Fahdli Heriansyah; Arif Nurwaskito; Suriyanto Bakri; Mubdiana Arifin
Jurnal Geomine Vol 11, No 1 (2023): April 2023
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jg.v11i1.1705

Abstract

Mining materials can be in the form of material (over-burden) and potentially contain sulfide minerals, the research location is a former iron ore mining, it is known that iron ore is an acid mine drainage forming material. This characterization test of acid mine drainage forming samples can be used as a consideration in environmental management design to minimize unwanted environmental impacts. This study aims to analyze the mineralogical content of rocks, the potential of rocks as acid mine drainage formers, and determine management methods if the potential for acid mine drainage is indicated. The samples used were 5 rock samples in the pit and disposal, using petrography, mineragraphy, and XRD mineralogy analysis to determine the mineral composition contained, and kinetic testing to determine the reaction rate of acid mine drainage formation. The results of the analysis obtained the composition of metal minerals contained in samples 4 and 5, namely pyrite, hematite, magnetite, and geotite. Whereas in samples 1, 2, and 3 not enough metal minerals were detected. The results of the kinetic test analysis produce accurate data for samples 4 and 5 which have low or acidic pH values 6. So it can be concluded that the potential for the formation of acid mine drainage is found in samples in the disposal, namely iron ore with a low pH value 6 (acidic), methods that can be used in the process of preventing and controlling acid mine drainage can be done passively by using NAF material to stockpile polluted PAF material.
Analisis Fraktal Untuk Menentukan Kuat Geser Batuan Sedimen di Kabupaten Ende - Lianunu Provinsi Nusa Tenggara Timur - Indonesia Tien Veny Vera; Sari B Kusumayudha; Singgih Saptono; Kurniawan Kurniawan
Jurnal Geomine Vol 11, No 1 (2023): April 2023
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jg.v11i1.1372

Abstract

Rock surface roughness is an important parameter used in calculating the shear strength of rocks, both of which greatly affect the stability of a slope. In this research, direct shear strength testing was carried out on 5 sedimentary rocks to obtain the value of cohesion and internal friction angle. The research objectives include (1) Calculating the fractal dimension (D), joint roughness coefficient (JRC), and rock shear strength. (2)Analysis of rock shear strength calculation results from rock direct shear test results. To determine the fractal dimension using the box-counting method in ImageJ FracLac software. The factual D and JRC are two interrelated parameters, where the higher of D value, will increase the JRC value, this is influenced by the grain size. In the fine grain size sample, the D values ranged 1.0034-1.0045, medium grain size 1.0057, and coarse grain size 1.0084-1.0085. Calculations with the new equation, the JRC values in the samples S1 (8-10), S2 (12-14), S3 (4-6), S4 (12-14), and S5 (6-8). The comparison of graphs shows a pattern that is almost similar to previous researchers. The difference in the value of shear strength is influenced by the level of rock surface roughness using fractal dimensions provides a higher detail value. By using statistical analysis (RMSE and MAD), it shows a small error value, namely the results of the research which have the lowest RMSE (0.14) and MAD (0.11) values, meaning the results of calculations using fractal dimensions are correlated with the measured data from the laboratory shear test. 
Analisis Penurunan Konsentrasi Gas Karbon Monoksida (CO) Pada Saluran Ventilasi di Area Belokan Menggunakan Model Fisik Terowongan Skala Laboratorium Ririn Yulianti; Panjaitan Novi Hartami; Edy Jamal Tuheteru; Yuga Maulana; Irfan Marwanza; Sekar Tika Sari
Jurnal Geomine Vol 11, No 1 (2023): April 2023
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jg.v11i1.1270

Abstract

Carbon monoxide (CO) gas is one of the harmful and toxic gases derived from the residue of blasting and incomplete combustion of mining equipment machines in underground mines. CO gas dilution is carried out with the intention of unsafe conditions in the mining area. The purpose of this study was to determine the decrease in CO gas based on the value of the diffusion coefficient and by making a 1:10 scale tunnel model with a 90° turning vent duct flow direction using an elbow according to the actual situation. XC 13 B and XC 13 NRTH in the Cikoneng block, PT Cibaliung Sumberdaya is used as a reference for the tunnel model. The study was carried out with variations in the position of the vent duct to determine the speed of decrease in the CO concentration tested. This study was conducted using secondary and primary data which is expected to get the results of the influence of the concentration of CO gas itself and the influence of vent duct placement on the direction of flow on the decrease in CO gas concentration.

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