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Jurnal Geominerba
Published by Pusat Pengembangan Sumber Daya Manusia Geologi, Mineral, dan Batubara
ISSN : 25801376     EISSN : 29632196     DOI : -
Core Subject : Science, Education, Engineering,
Earth & Planetary Sciences Education Engineering Other
The GEOMINERBA journal is published by the Center for Human Resources Development, Geology, Minerals and Coal which is published every June and December. Published publications related to the Development of Human Resources in the Field of Geology, Minerals and Coal.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 89 Documents
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IDENTIFIKASI PERUBAHAN AREA PERTAMBANGAN MENGGUNAKAN CITRA SATELIT LANDSAT DENGAN MACHINE LEARNING PADA GOOGLE EARTH ENGINE DI KECAMATAN CIPATAT, KABUPATEN BANDUNG BARAT Lumban Raja, Denny
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 8 No 2 (2023): Jurnal Geominerba - 2023
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v8i2.143

Abstract

The mining activities and limestone mining industry have both positive and negative impacts on the community in the Cipatat District, West Bandung Regency. Technological advancements in satellite image analysis have increasingly incorporated Cloud computing and big data applications, such as Google Earth Engine (GEE), in land classification. Quick decision-making in mining activities requires fast and accurate data presentation. Through machine learning technology, this problem becomes one of the appropriate solutions. The objective of this research is to identify mining areas using machine learning in the Cipatat District, West Bandung Regency. The method employed is supervised classification analysis using the Random Forest and CHART algorithms with Google Earth Engine (GEE). The research results indicate that the accuracy level with the Random Forest algorithm is better with an accuracy rate of... compared to the CHART algorithm, which is...%. This is demonstrated by the alignment of field observation data with the classification that has been created. The utilization of the GEE platform in monitoring mining land developments can be applied and used as one of the considerations in policymaking for mining activities by the government of West Bandung Regency, West Java.
GETARAN TANAH AKIBAT PELEDAKAN PADA JARAK AMAN KURANG DARI 300 METER TERHADAP MANUSIA DAN BANGUNAN DI KUARI BATUGAMPING PT LEBAK ENERGI NUSANTARA BAYAH KABUPATEN LEBAK PROVINSI BANTEN Adinugraha, Wanda; Suwandhi, Awang; Marmer, Dwihandoyo; Hadiyat, Yudiana
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 8 No 2 (2023): Jurnal Geominerba - 2023
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v8i2.144

Abstract

The limestone quarry managed by PT Lebak Energi Nusantara (PT LEN) is located at Bayah, Lebak regency, Banten province. Blasting techniques are used to break limestone from its rock mass. In connection with the progress of mining which is getting closer to public facilities, a technical study of the impact of blasting is needed. Mining progress is a critical issue because the impact of blasting vibrations can affect the stability of buildings and disturb residents around the quarry. The buildings around the blasting are classified as class 3 because most of them have foundations made of stone, brick masonry made of cement mortar which is then bound by reinforced concrete. According to SNI 7571:2010, this building quality has a maximum blasting vibration threshold value of 5 mm/s. The relationship curve between blasting vibrations or peak particle velocity (PPV) and the distance scale (SD) was successfully developed from the results of analysis of 30 blasting data. Based on this curve, it is predicted that the maximum total of explosives recommended to be safe at a distance of less than 300 m and at blasting vibration maximum 5 mm/s is 78.47 kg/delay.
GEOLOGI DAN MODEL KOLABORASI PENGEMBANGAN GEOPARK IJEN, DI KABUPATEN BANYUWANGI Rohaendi, Nendi; Setiawan, Iwan Fahlevi; Budiyono, Arif; Harmoko, Alex Antonius; Wahyudi, Wahyudi
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 8 No 2 (2023): Jurnal Geominerba - 2023
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v8i2.145

Abstract

The Banyuwangi area has special features in terms of geology and mineralization, this is proven by the designation as an Ijen geopark and the existence of a mining company. The purpose of writing this article is to describe the potential of the Ijen geopark in developing geotourism in the Banyuwangi area. Geoparks are understood as a combination of geological diversity, biodiversity and cultural diversity. Geopark management is managed for conservation, education and economic purposes in a sustainable manner, with active involvement from the community and local government, so that it can be used to increase people's understanding and concern for the earth and its surrounding environment. The result of this writing is a general description of the geotourism potential in the Banyuwangi area and its economic development.
ANALISIS KESTABILAN LERENG MENGGUNAKAN METODE ROCK MASS RATING, SLOPE MASS RATING, DAN JANBU PADA JALAN SUMBING, KELURAHAN BENDUNGAN, KECAMATAN GAJAHMUNGKUR, KOTA SEMARANG Herfaes, Bey Anandha; Giraldi, Devina Aldalivia Budhi; Yasmin, Lutfia; Widiarso, Dian Agus
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 9 No 1 (2024): Jurnal Geominerba - 2024
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v9i1.153

Abstract

Kestabilan lereng merupakan suatu kondisi atau keadaan yang mantap atau stabil terhadap suatu bentuk dan dimensi lereng. Gerakan tanah yang terjadi di Indonesia setiap tahunnya mengalami peningkatan terutama pada musim hujan. Pergerakan massa tanah merupakan suatu proses geologi yang dimana merupakan hasil interaksi kondisi yang terjadi pada suatu lingkungan seperti morfologi, geologi, struktur geologi, hidrogeologi, dan penggunaan lahan. Selain itu, terdapat juga pengaruh dari kondisi tektonik yang ada diIndonesia, yang dimana kondisi tektonik ini menyebabkan terbentuknya kenampakan morfologi berupa tinggian, patahan, batuan yang mudah lapuk yang dikarenakan adanya pengaruh iklim tropis, sehingga menyebabkan potensi gerakan tanah semakin tinggi. Selain itu, adanya faktor pertumbuhan penduduk yangsangat pesat, dapat memberikan dampak juga pada perubahaan tata guna lahan, sehingga mengakibatkanbencana gerakan tanah akan semakin meningkat. Keruntuhan pada lereng alami atau buatan disebabkan karena adanya perubahan antara lain topografi, seismik, aliran air tanah, kehilangan kekuatan, perubahan tegangan, dan musim / iklim / cuaca. Akibat adanya gaya-gaya luar yang bekerja pada material pembentuk lerengmenyebbakan material pembentuk lereng mempunyai kecenderungan untuk menggelincir. Kata kunci: Lereng; Tanah; Tektonik; GeologKOTASEMARANG
ANALISIS POTENSI BENCANA LONGSOR MENGGUNAKAN METODE KINEMATIK DI DESA JABUNGAN, KOTA SEMARANG Perkasa, Leony Isda; Dirostrimila, Najwa Humaira; Soputan, Puspo Anggreiny Putri; Widiarso, Dian Agus
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 9 No 1 (2024): Jurnal Geominerba - 2024
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v9i1.154

Abstract

Research area is a residential area located in Jabungan, Banyumanik, Semarang, Central Java. The research focuses on analyzing the potential of landslides that can occur. The research slope is located with residential areas and roads. Based on the potential damage that can occur if the slope slides become the background of this study. Near the research location which is a residential area and roads, the slope stability factor needs to be considered because a stable slope causes the slope to be safe and there is less possibility of landslides. Landslide is the movement of the soil mass or the expanse of experience plane or a shear surface plane. The types of landslides have a relationship with the geological structures that cause discontinuities in a rock mass. One of the steps to determine the possibility of landslides from a slope is the kinematic analysis method. Kinematic analysis is carried out with the aim of knowing the types of landslides that may occur. After doing kinematic analysis, the slope is possible for landslides to occur. By knowing the potential of landslides, it can be used as a basis for mitigation so that landslides not occur in the area that can cause losses.
ANALISIS TINGKAT KELONGSORAN MENGGUNAKAN METODE ROCK MASS RATING (RMR) , SLOPE MASS RATING (SMR) SERTA METODE BISHOP PADA LERENG BATUAN X, KELURAHAN JANGLI, KECAMATAN TEMBALANG, KOTA SEMARANG Nickolas, Syafrichard Ihsan; Nurfaizi, Nick; Husain, Habib; Widiarso, Dian Agus
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 9 No 1 (2024): Jurnal Geominerba - 2024
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v9i1.155

Abstract

Kawasan penelitian berlokasi di Kelurahan Jangli, Kecamatan Tembalang, Kota Semarang. Kawasan ini berada dekat dengan kawasan pemukiman sehingga faktor keamanan lereng menjadi faktor penting yang harus diperhatikan. Lereng batuan yang aman dari longsor tentunya harus memenuhi berbagai kriteria dan pembobotan tertentu sesuai dengan metode yang digunakan. Longsor merupakan pergerakan massa tanah atau batuan sepanjang bidang tergelincir atau suatu permukaan bidang geser. Terjadinya suatu peristiwa tanah longsor tentunya disebabkan oleh berbagai faktor-faktor alam seperti adanya peran dari struktur geologi, mekanika batuan, kuat tekan batuan, maupun faktor geologi lainnya. Adapun penelitian kali ini memiliki fokus utama terkait dengan analisis RMR dan SMR dan penggunaan metode Bishop dalam mengidentifikasi tingkat kelongsoran lereng batuan penelitian. Dari penelitian yang telah dilakukan, diketahui bahwasanya pada metode RMR didapati nilai pembobotan sebesar 72 yang, menurut klasifikasi Bieniawski (1989), termasuk dalam kelas II atau "Pemerian Baik". Sementara dalam analisis SMR, hasil perhitungan mengungkapkan persentase kinematika wedge sliding sebesar 0,62%. Pembobotan F1, F2, F3, dan F4 menghasilkan nilai SMR sebesar 86,1, yang secara klasifikasi dikategorikan sebagai "very good" atau "sangat baik". Hasil pengolahan data dengan menggunakan Metode Bishop juga menunjukkan nilai kondisi lereng yang aman, baik dalam kondisi kering maupun kondisi jenuh, di mana nilai yang diperoleh menunjukkan FK>1,25. Dengan demikian, bahwa kondisi massa batuan di lokasi tersebut sangat stabil, dengan potensi kegagalan atau longsoran yang rendah
STUDI PUSTAKA PEMETAAN GEOLOGI DIGITAL (DIGITAL GEOLOGICAL MAPPING) BERBASIS SMARTPHONE Rohaendi, Nendi; Herlinawati, Herlinawati; Setiawan, Iwan Fahlevi; Wahyudi, Wahyudi
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 9 No 1 (2024): Jurnal Geominerba - 2024
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v9i1.156

Abstract

Digital maps are representations of geographic phenomena stored for display and analysis by computers. A digital map can also be interpreted as a digitally presented image of the earth's surface that is reduced to a certain scale through a projection system. Digital geological mapping using smartphones is increasingly popular because it provides many conveniences. The purpose of this paper is to discuss which smartphone (smart phone) based operating system is the best in terms of accuracy for digital geological mapping. The market share of smartphones is currently controlled by three big players, namely Android, Windows and IOS. The results of a literature search show that there are two most popular operating systems for digital geological mapping, namely Android and IOS. Based on the review results, even though Android has the largest market share, iOS-based smartphones have various advantages in terms of reliability and accuracy.
KARAKTERISTIK UNSUR TANAH JARANG (LTJ) LANTANUM DAN CERIUM PADA LAPUKAN GRANIT DI DAERAH PARMONANGAN Musyaffa, Muhammad Ayyasy; Patonah, Aton; Faisal, Reza Mochammad
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 9 No 1 (2024): Jurnal Geominerba - 2024
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v9i1.157

Abstract

As a critical mineral category, the demand for rare earth metals (LTJ) has increased significantly. Rare earth metals, Lanthanum (La) and Cerium (Ce), are utilized in a variety of contemporary technologies. Rare earth elements such as La and Ce are present in rare earth element-bearing minerals and can be found in granitoid-weathered deposits. The purpose of this study is to determine the characteristics of La and Ce elements conttained in ion adsorption deposits resulting from the weathering of granite boulders, as well as their relationship to other chemical elements. In this study, acid igneous rock weathering samples obtained from drilling in Parmonangan District, North Tapanuli Regency, North Sumatra were analyzed to identify La and Ce element-bearing minerals, enrichment zones, and types of rare earth element deposits. La is enriched in the rare earth element accumulation zone of the ion adsorption precipitate model, while Ce is enriched in the leaching zone, according to the findings of the investigation. This occurs as a result of the movement of La element during weathering, which is then bound by alteration minerals such as kaolinite. As a result of the oxidation process in the rare earth element leaching zone, the element Ce has a distinct ion value, resulting in limited mobility.
ANALISIS JARAK PELEDAKAN KUARI ANDESIT TERHADAP REL KERETA API CEPAT DI CV PANGHEGAR PLERED PURWAKARTA JAWA BARAT Adinugraha, Wanda; Suwandhi, Awang; Marmer, Dwihandoyo; Hartami, Pantjanita Novi; Ipmawati, Meda Rusdiana
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 9 No 1 (2024): Jurnal Geominerba - 2024
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v9i1.158

Abstract

CV Panghegar, operating in the villages of Cilalawi and Liunggunung, Sukatani and Plered sub-districts, Purwakarta Regency, West Java Province, is a quarry mining company that employs blasting activities to break andesite rock in its mining processes. Given the proximity of the high-speed railway tracks to the mining site, a technical assessment of the impact of blasting is necessary. The distance between the high-speed railway tracks and the mining site, being less than 300 meters, presents a critical issue as blasting vibrations or flyrock can damage the railway structure or pose a safety hazard to passing trains during blasting operations. The objectives of this study are to determine the safe ground vibration levels caused by blasting, the safe distance for flyrock, and the methods and technical references for safe blasting activities near high-speed railway tracks within 300 meters. The study approach includes field observations, measurements, and discussions with the company and other relevant parties. Based on the study results, it is concluded that the maximum vibration levels are below the standard vibration limits, with vibrations towards the tracks at distances of 58 meters and 60 meters reaching 13.61 mm/s and 15.86 mm/s, respectively. Meanwhile, the maximum vibration levels parallel to the tracks at distances of 56 meters and 62 meters reach 15.2 mm/s and 17.69 mm/s, respectively. The farthest flyrock distance is 20-30 meters (< 300 meters). Blasting operations with the current geometry and at a distance of 100 meters (< 300 meters) from the railway tracks can use a maximum ANFO explosive weight of 22.5 kg/delay (equivalent to 3 holes detonating simultaneously), 37.5 kg/delay (equivalent to 5 holes detonating simultaneously), or 52.5 kg/delay (equivalent to 7 holes detonating simultaneously), which are predicted to generate vibrations of 8.15 mm/s, 12.90 mm/s, and 17.47 mm/s, respectively.

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