Penelitian ini dilakukan di PT Batu Hitam Jaya, sebuah tambang batubara terbuka di Kabupaten Batanghari, Jambi. Pada awal Februari 2025, terjadi kelongsoran pada bench di bawah jalan dengan lebar 16 meter, tinggi 5 meter, dan sudut kemiringan 38° yang juga difungsikan sebagai jalan menuju disposal. Kondisi ini menimbulkan gangguan operasional dan meningkatkan risiko keselamatan, sehingga diper…
Batubara merupakan salah satu sumber energi utama yang digunakan di berbagai negara dan sering diperdagangkan guna memenuhi kebutuhan energi global. Indonesia sebagai salah satu negara penghasil batubara memiliki peran penting dalam memenuhi permintaan tersebut salah satunya melalui PT Bukit Asam Tbk yang memproduksi dan mengekspor batubara dalam berbagai market brand. Penelitian ini bertujuan …
Kegiatan peledakan pada PT MTN di pit E Utara bertujuan untuk mengupas lapisan tanah penutup batubara overburden ataupun interburden. Hal ini dilakukan agar mempermudah alat gali muat untuk mengupas lapisan tanah penutup tersebut dalam mencapai target produksi. Kegiatan peledakan yang dilakukan di PT MTN terdiri dari beberapa tahapan, seperti persiapan pengeboran, kegiatan pengeboran, kegiatan …
The research was conducted on the silica mining project of PT Minevesting Resources Indonesia, which is still at the feasibility study stage, with the main focus on evaluating the optimal financing strategy through a comparison between equity financing and debt financing. The analysis was carried out using a quantitative approach based on projected cash flows with two key parameters, namely Net…
Penelitian ini bertujuan untuk mengidentifikasi kelurusan (lineament) dan menganalisis pola struktur geologi di wilayah Parungponteng dan sekitarnya, yang terletak di Provinsi Jawa Barat. Studi ini dilakukan dengan pendekatan penginderaan jauh menggunakan data Digital Elevation Model Nasional (DEMNAS) sebagai sumber utama dalam ekstraksi kelurusan. Tahapan awal dalam proses penelitian meliputi …
Watersheds are areas where rainfall falls and is collected by mountain ridges before flowing through smaller rivers and into the main river. Rainfall that falls directly on the ground separates into flow water, evaporation water, and infiltration water that eventually enters the river as stream discharge. Surface runoff can occur from excessive rainwater falling to the ground. Runoff can occur …
Penelitian yang dilakukan pada Daerah Kisau dan Sekitarnya, OKU Selatan, Sumatera Selatan. Tujuan dilakukan penelitian untuk mengetahui aspek geologi, faktor penyebab longsor, stabilitas lereng dengan nilai faktor keamanan (FK), mengetahui tingkat kerentanan longsor, dan mitigasi pra-bencana longsor. Metode yang digunakan dalam penelitian yaitu metode bishop dan unconfined compressive strength.…
Batupasir Formasi Ledok merupakan batupasir karbonatan yang mengandung foraminifera, sehingga menarik untuk dikaji terkait lingkungan pengendapan dan juga fasies batuannya. Analisis mikrofasies dan diagenesis dilakukan untuk mengetahui lingkungan pengendapan serta proses-proses diagenesis dan tipe mikrofasies. Penelitian dikhususkan pada satuan batupasir karbonatan Formasi Ledok pada daerah Taw…
Daerah penelitian terletak di Daerah Bumi Kawa Kabupaten Ogan Komering Ulu, Provinsi Sumatera Selatan. Pada daerah penelitian dijumpai struktur batuan beku andesit dan pada analisis petrografi juga ditemui tekstur khusus. Kondisi Geologi tersebut menjadikan daerah penelitian ini menarik untuk dilakukan penelitian lebih lanjut terutama untuk menjelaskan kaitannya dengan keterbentukan batuan beku…
In arranging mining activities, risk management on slope stability is very important, especially in areas that have a high risk of landslides and work accidents. Risk management includes the identification, analysis, and evaluation of risks as well as decision making to reduce or avoid these risks. The results of the study can be recommendations in the basis for making appropriate risk manageme…
The South Sumatra Basin, precisely located in the back arc basin, has formations that contain coal, including the Muara Enim Formation, Airbenakat Formation and Talang Akar Formation. One of them is PT Bukit Asam Tbk, Muara Enim Regency, South Sumatra which has a coal mining site. The method used in this research is the stratigraphic correlation method, where this method can help in knowing the…
Administratively, the research area is located in the PT. Bukit Asam Tbk precisely at PIT ZA, Sirah Pulau Village, East Merapi District, Lahat Regency, South Sumatra Province. This study aims to analyze geological conditions, engineering geology and the value of safety factors and the probability of avalanches in the research area. In addition, this study aims to recommend an ideal slope design…
One of the main needs and aspects that affect human life is water. Water is an important necessity and plays a major role for living creatures in this world. Every region certainly has various water problems, both in terms of quantity and quality of water in that region. Water is divided into two types, namely groundwater and surface water. Research in the Indralaya Mulya area will discuss grou…
Natural or intact peatlands are important carbon stores because they can sequester large amounts of carbon. An estimated 500-700 Gt of organic carbon globally is stored in peatlands. The physical characteristics of peat that are important in its utilization include moisture content, bulk density (BD), total pore space, soil permeability, soil color, and peat maturity. This research method uses …
Penelitian dilakukan di Daerah Kayu Ajaran dan sekitarnya, Bengkulu Selatan dengan luas kawasan 9 x 9 Km untuk mendapatkan informasi struktur bawah permukaan menggunakan metode anomali gravitasi. Penelitian bertujuan untuk menganalisis dan merekonstruksi struktur bawah permukaan dan memahami keterkaitannya dengan hasil observasi lapangan. Anomali gravitasi diperoleh dari data Global Gravity Mod…
The increase in volcanic activity at Mount Marapi, which occurs periodically from January to March 2024, causes a buildup of volcanic material around the crater and on the mountain slopes. Recorded until June 2025 volcanic activity on this mountain occurred several times and experienced eruptions that spewed volcanic material at a radius of 2 - 3 km from the crater of Mount Marapi. This accumul…
Regionally, the Bungin Campang Village area located in Simpang District, South OKU Regency, is located in the Palembang sub-basin, which is an integral part of the South Sumatra Basin. The South Sumatra Basin is a back-arc basin formed in the Tertiary period due to tectonic interaction between the Sunda Shelf, which is part of the Asian continental plate, and the Indian Ocean plate. Geologicall…
Bencana longsor merupakan ancaman serius di Kabupaten Lahat, Sumatera Selatan, dipicu oleh kondisi geologi, iklim, dan aktivitas manusia, terutama kemiringan lereng curam, curah hujan tinggi, dan kerentanan geologis. Penelitian ini bertujuan memetakan daerah rawan longsor dengan memanfaatkan Sistem Informasi Geografis (SIG) melalui data citra satelit dan peta topografi. Fokus utama adalah ident…
High rainfall can affect many thing in mining operational activities, therefore an optimal drainage system is needed to handle water from entering the minig area. The aim of this research is to determine the optima drainage system planning process for the research location. Rainfall will be calculated using the Gumbel method, the result of calculation for 10 years is 145.19 mm/day. With a Minin…
This study aims to evaluate the slope stability at Pit X, located within the open-pit mining area of PT Bukit Asam, Muara Enim Regency, South Sumatra. This location was previously used as a disposal area for mining waste material and has heterogeneous geotechnical characteristics that pose a potential risk of slope instability. The approach used in this study combines the Limit Equilibrium Meth…
The Darmakradenan area, Banyumas Regency, Central Java, is part of the Banyumas Basin, which is deposited in a back-arc basin behind a magmatic arc. The Tapak Formation limestone in this area was formed during the peak of Java's tectonic activity, which caused regional uplift and northward shifting of the volcanic arc, transforming the depositional environment into a barrier reef. This study ai…
Tanjung Baru area, Ogan Komering Ulu, South Sumatra Province has high rainfall which can be a contributing factor to flooding. One of the factors causing flooding is the limited ability of the soil to absorb water and can inhibit the movement of water in the soil. This research analyzes flood vulnerability in Tanjung Baru, Ogan Komering Ulu, using the Weighted Overlay method and the soil permea…
Pahat merupakan suatu alat potong pdaa proses pemesinan untuk membentuk benda kerja , banyak jenis pahat salah satunya pahat karbida yang memiliki keuletan yaang tinggi. Cairan pemotongan adalah minyak sederhana yang diaplikasikan untuk mendinginkan dan melumasi alat pahat dan benda kerja. Selain itu juga berfungsi sebaagai pembersih, untuk memperhalus permukan benda kerja dan pembuang gram. Pa…
Tectonically, the study area is located in the Majalengka Sub Basin, part of the Bogor Basin, which was deposited in a deep-sea turbidite environment. The turbidite current mechanism during the formation of the Cinambo Formation resulted in the deposition of sandstones with distinctive characteristics. In the Cengal area, research related to diagenesis control on the evolution of porosity of Ci…
Sekuen stratigrafi sebagai suksesi strata yang diendapkan selama siklus penuh perubahan akomodasi atau pasokan sedimen dengan dibatasi oleh bidang ketidakselarasan subaerial dan keselarasan korelatif laut. Pada sekuen stratigrafi, ruang akomodasi merupakan area yang tersedia untuk akumulasi sedimen potensial yang dipengaruhi oleh fluktuasi muka laut dan penurunan permukaan dasar cekungan. Paleo…
Research on limestone microfacies studies was carried out in the Tuban Formation, Ngrayong Member, located in the Ngujuran and Surrounding areas, Bancar District, Tuban Regency, East Java. The research area is in the North East Java Basin, Rembang zone. The Tuban Formation of the Ngrayong Member is composed of carbonate rocks, including limestone, sandstone and claystone inserts. The clastic li…
Air merupakan aset karakteristik yang berperan besar dalam keberadaan makhluk hidup di planet ini. Setiap daerah hampir selalu harus berhadapan dengan masalah air baik dari segi kuantitas maupun kualitasnya. Air memiliki 2 jenis yaitu air permukaan dan air tanah. Penelitian kali ini dilakukan di Daerah Simpang Tonang adalah penelitian mengenai air tanah. Air tanah merupakan air yang bergerak di…
This research was conducted on the Talang Akar Formation located in the South Sumatra Basin. The main focus of the study was the analysis of facies and sedimentation environments in the study area. The purpose of this fascies analysis is to examine more deeply the distribution of facies and the sedimentation environment in the Root Cement Formation from the results of the analysis can be known …
The North West Java Basin is one of the major hydrocarbon basins in Indonesia that has been extensively explored and has great potential for the development of oil and gas reserves. The Baturaja Formation layer interval is the focus of the study because it has significant reservoir potential. Administratively, the research site is located in the northern Java Sea in the “ANDRI” field which …