PROMINE 2022-11-03T04:50:21+00:00 Guskarnali, S.T., M.T. Open Journal Systems <hr> <div><strong>p-ISSN 2354-7316&nbsp;</strong><em>(Media Print)</em></div> <div><strong>e-ISSN 2620-7737&nbsp;</strong><em>(Media Online)</em></div> <div align="justify"><strong>PROMINE</strong> is a scientific periodical publication of Department of Mining Engineering, Bangka Belitung University, which is published every <strong>June</strong> and <strong>December</strong> in a year which covers the fields of Exploration (Geology and Geophysics), Geotechnical / Geomechanics, Minerba Processing, Mining Environment, Reclamation and Post-Mining.&nbsp;<strong>PROMINE</strong> has become a journal accredited by the Ministry of Research, Technology and Higher Education based on Number SK 36/E/KPT/2019 about the Results of Scientific Journal Accreditation in Period VII of 2019 . Defined as an accredited scientific journal ranked 4. Accreditation is valid for 5 (five) years of Vol. 5 No.2, 2018 until Vol. 10 No.1, 2023.</div> <div><iframe style="border: 0px #ffffff none;" src=";gs=PRHbZF0AAAAJ&amp;sc=3&amp;link=" name="statistik" width="50%" height="265px" frameborder="0" marginwidth="0px" marginheight="0px" scrolling="no"></iframe></div> The Effect of Discontinuity on Stability of Displaced Rock Slope Case Study Andesite Quarry PT Lola Laut Timur Bogor Regency 2022-11-03T04:50:20+00:00 Andesta Granitio Irwan S. Koesnaryo Barlian Dwinagara Singgih Saptono <p><em>Discontinuity in a rock mass has an influence on the stability of a rock slope because it is one of the controlling &nbsp;factors &nbsp;of &nbsp;slope &nbsp;failure. &nbsp;In &nbsp;this &nbsp;study, &nbsp;an &nbsp;analysis &nbsp;was &nbsp;carried &nbsp;out &nbsp;on &nbsp;the &nbsp;role &nbsp;of</em></p> <p><em>discontinuities, namely joints and &nbsp;lithic &nbsp;tuff &nbsp;layers &nbsp;on slope stability and the&nbsp; effect of&nbsp; persistent</em></p> <p><em>parameters and joint roughness on the safety factor of safety factor. The analysis used is the effect of changes in the thickness of the lithic tuff, persistence and the value of joint roughness on the value of the safety factor. Processing of slope stability data using Rocscience RS2&nbsp; Software with Finite Element Method modeling with rock mass modeling used in the analysis, namely the Veneziano Model. The results showed that an increase in the thickness of the lithic tuff layer resulted in a decrease in the safety factor of the slope up to 1.37%. The effect of the persistence parameter on the slope safety factor was found that the higher the persistence value, the lower the slope safety factor value up to 2,9% and changes in the JRC value decreased the safety factor value up to 1,7%.</em></p> 2022-11-02T06:44:56+00:00 ##submission.copyrightStatement## Development of Mining Area Zonation in Magetan based on Geographic Information System application with overlay method 2022-11-03T04:50:20+00:00 Yazid Fanani Fajar Rizki Widiatmoko Salahudin Al Fakih I Wayan Koko Suryawan Mega Mutiara Sari <p><em>Magetan has resources mineral potential of non-metallic minerals and rocks. The mineral variety is a mineral which relates to the people livelihood because it necessary for infrastructure development. There is no mining area zoning until now and it can be used to optimize the management and utilization of potential resources. In Magetan, mining area zoning was carried out by giving weights and assessments to the determining parameters which was conducted by patch method and it utilized Geographic Information System.&nbsp; So, the result of mining area zoning could be grouped into three zones. They were a zone could be granted a mining permit, a zone could be granted a conditional mining permit and a zone could not be granted a mining permit. Determining parameters for mining area zoning were land height, disaster vulnerability, groundwater, river borders, lakes and irrigation buildings, springs, forests and protected areas, agricultural land and cultivation areas, settlements, cultural heritage, tourism and district strategic areas, and land slope. The result of potential resources identification was carried out by analyzing Magetan geological map which was obtained potential resources, like andesite, pumice breccia, sandstone, siltstone and basalt. The zoning of Magetan mining area is a zone could bne granted a mining permit and the area was 9,914.507 Ha or about 14% in a percentage of the area, a zone could be granted a conditional mining permit covering an area of 20,748.29 Ha or about 30% and a zone unable to be granted a mining permit covering an area of 39,296.08 Ha or about 56% of the total area of Magetan.</em></p> 2022-11-02T06:51:23+00:00 ##submission.copyrightStatement## Increased Added Value of Calcite Mineral Into Decorative Lighting Art Items 2022-11-03T04:50:20+00:00 Rully Nurhasan Ramadani M. Imam Aga Dinata Eka Adhitya Himawan Nuryahya Sri Widayati <p><strong><em>Abstract</em></strong></p> <p><em>Increasing the added value of rock and minerals can provide benefits to the wider society. The policy conservation of minerals, which has a focus on optimizing benefits and minimizing negative impacts of mining activities. Framework of optimizing the benefits of minerals, there are efforts, maintenance, protection, mining and processing as well as increasing the added value og these minerals. Calcite mineral (CaCO<sub>3</sub>) a part of the carbonate mineral group as one of the main composition mineral of limestone. The utilization of this calcite mineral is reviewed based on the quality of the physical and chemical properties. In principle, this research utilize the physical properties of the mineral because the chemical quality is relative low. Trial and error method is used in this study to getting the right design of art. The processing is simple and doest not require high technology and certified skills, by utilizing the transparency, color, and gloss properties of the mineral calcite will become an art item that has added value when given lighting.</em></p> <p><strong><em>Keywords</em></strong><strong><em>:</em></strong><em> Calcite, Added Value, Art Items, Decorative Lighting</em></p> 2022-11-02T06:54:36+00:00 ##submission.copyrightStatement## Analysis of The Distribution of TSS, TDS, pH And Temperature In The River Due to People's Alluvial Gold Mining With SGEMS In Desa Sungai Kapas, Merangin, Jambi 2022-11-03T04:50:21+00:00 RusnoviandI RusnoviandI Refky Adi Nata Puji Rahayu Verra Syahmer <p>Kegiatan penambangan emas &nbsp;secara tradisional&nbsp;dilakukan oleh masyarakat di Desa Sungai Kapas, Kabupaten Merangin, Jambi menyisakan lubang- lubang dan kolam&nbsp;akibat aktivitas penambangan emas. Aktivitas penambangan emas dilakukan disekitar aliran Sungai Blengo yang ada di Desa Sungai Kapas. Sisa air limbah penambangan dialirkan secara langsung ke sungai sehingga menyebabkan kekeruhan pada air Sungai Blengo. Penelitian ini dilakukan guna mengetahui kadar pencemaran yang terjadi di Sungai Blengo dengan parameter; TSS (total suspended solid), TDS (total dissolved solid), pH, dan Suhu. Metode yang digunakan untuk penelitian ini adalah metode eksperimen. Hasil pengujian menunjukan bahwa nilai TSS pada setiap sampel stasiun penelitian memiliki nilai melebihi ambang batas maksimal, nilai yang memenuhi nilai maksimal ambang batas adalah 200 mg/L pada stasiun 8 (delapan), pada stasiun lainnya nilai TSS melebihi 200 mg/L dengan nilai tertinggi sebesar 6.400 mg/L pada stasiun 7 (tujuh). Nilai pH pada staisun 3 (tiga) dan memiliki nilai 4,7 dengan demikian nilai tersebut tidak memenuhi standar sebesar 6-9. Dengan demikian dapat diketahui bahwa air Sungai Blengo tidak layak. Hal ini dikarenakan tidak memenuhinya syarat-syarat yang ada pada peraturan yang berlaku untuk penambangan serta pengolahan emas.</p> 2022-11-02T07:22:53+00:00 ##submission.copyrightStatement## Study of Post-Mining Slope Stability Based on Physical and Mechanical Properties of Soil, Case Study : Mataraman District, Banjar Regency, South Kalimantan) 2022-11-03T04:50:21+00:00 Rahma Norfaeda Muhammad Rizhan Kartini kartini <p><em>Post-mining slopes have the potential for landslides caused by factors such as slope geometry, rock structure, physical and mechanical properties of rock and groundwater content. Post-mining slope monitoring must be carried out to avoid more environmental problems. This study aims to determine the stability of ex-mining slopes. The soil sample used form the Mataraman District, Banjar Regency. The analytical method of a technical study based on physical and mechanical properties of the soil with a mine slope design simulation using slide 6.0 software to determine the safety factor of ex-mining slopes from several variations of slope angles. The safety factor analysis was taken from the data of the smallest cohesion value and bulk weight to represent the strength of the slope material. Based on the analysis of the value of the physical and mechanical properties of the sample against the analysis of slope stability, it was found that the post-mining slope will be stable and safe if there are no additional factors that can reduce the stability of the slope. The mine slope still has a safety factor value of &gt; 2 which means it is stable even though the slope angle has reached 70</em><em>°</em><em>.</em></p> <p><em>&nbsp;</em></p> 2022-11-02T07:26:48+00:00 ##submission.copyrightStatement## Productivity Study of Tools for Optimizing Overburden Production Results at PT. Karebet Mas Indonesia Site Kutai Energi East Kalimantan 2022-11-03T04:50:21+00:00 Fairus Atika Redanto Putri Yudho Dwi Galih Cahyono Serin Rabin <p><em>Overburden and coal mining must go hand in hand and in line, because high overburden productivity will affect coal production results. This study aims to calculate, analyze productivity and determine recommendations for increasing production. This research uses a combined research method and a mathematical pattern. The company has a productivity target of 220.5 m<sup>3</sup>/hour, with the actual conditions obtained for digging and loading equipment that has reached the target of 279.9238 BCM/hour, but the transportation equipment has not reached the target of 80.9048 LCM/hour. There are various factors that have not achieved the production target, among others, low work efficiency, quite long transportation and return times during transportation equipment circulation times, as well as mismatched compatibility factors that cause long waiting times for transportation equipment. After optimization with the addition of 1 unit of excavator with the same type, optimization of the transportation equipment cycle time and optimization of the work efficiency of the transportation equipment, an increase in productivity was obtained in each conveyance, so that after optimizing the productivity target of transportation equipment was achieved by 222 ,4045 LCM/Hour.</em></p> 2022-11-02T00:00:00+00:00 ##submission.copyrightStatement##