OPTIMALISASI GEOMETRI LERENG LOW WALL TAMBANG BATU GAMPING UNTUK MENINGKATKAN…

Limestone is one of the mined materials commonly used in the cement industry. The mining method employed for this material is one of the open-pit mining methods. Open-pit mining activities will create slope dimensions, and the gentle slope dimensions lead to suboptimal mining. PT. Semen Baturaja Tbk. has slope geometry in the low wall area that is gentle, resulting in a high safety factor in th…

TECHNICAL PLANNING FOR COAL MINING SEQUENCE IN 2024 WITH CONSTRAINT OF GEOTEC…

PT XYZ targets 4,243,000 bcm of overburden and 1,150,000 tons of coal in 2024. The actual mining process in the first quarter was carried out and obtained overburden production of 577,698 bcm and 136,079 tons of coal which were under the company's first-quarter plan due to geotechnical problems and the presence of issues regarding disputed land. A mine plan is carried out by calculating the uni…

OPTIMASI PIT PENAMBANGAN NIKEL LATERIT PADA HILL LBS-02 BLOK WEST SOROWAKO PT…

PT Vale Indonesia Tbk merupakan perusahaan pertambangan yang bergerak dalam kegiatan eksplorasi, ekstraksi, dan penambangan komoditas mineral nikel. Salah satu hill yang terlibat dalam operasi penambangan adalah pit LBS-02 yang terletak di Blok West Sorowako, Kabupaten Luwu Timur, Sulawesi Selatan. Berdasarkan data resmi yang didapatkan dari PT Vale Indonesia Tbk, di dalam 10 tahun terakhir pro…

EVALUASI DIMENSI SUMP DAN KAPASITAS POMPA PADA SISTEM PENYALIRAN TAMBANG TERB…

PT. Tata Bara Utama merupakan perusahaan yang bergerak di bidang kontraktor pertambangan batubara di wilayah Kabupaten Musi Banyuasin, Provinsi Sumatera Selatan. Perusahaan ini menggunakan metode tambang terbuka di mana seluruh kegiatan operasi dilakukan dengan membuat lubang bukaan tambang yang berhubungan langsung dengan udara dan sinar matahari. Pada pit fase 2 kolam penampungan (sump) belum…

STUDI SENSITIVITAS BATAS RESIKO KELAYAKAN EKONOMI PROYEK PENAMBANGAN EMAS DI …

Sensitivity studies on investment capital, operating costs, and commodity prices will provide clearer insights related to the risk limits of the economic feasibility of mining projects. Through this research, it can be used to increase knowledge and understanding of the sensitivity of investment capital, operational costs, and commodity prices to net present value as an effort to determine the …

RANCANGAN SEQUENCE PENAMBANGAN BATUBARA TAHUN 2025 UNTUK MEMENUHI TARGET PROD…

PT Langgeng Daya Agrindo (LDA) is a mining contractor company operating in the IUP of PT Budi Gema Gempita located in Muara Lawai Village, Merapi Timur Sub-district, Lahat Regency, South Sumatra Province. PT Budi Gempa Gempita has an IUP area of 1524 Ha. The company has set a coal mining production target of 3.000.000 tons with a stripping ratio of 5 for the year 2025. To achieve the production…

STUDI OPTIMASI PIT DAN ESTIMASI CADANGAN BIJIH EMAS DI PT MINEVESTING RESOURC…

Edition

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ISBN/ISSN

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Collation

xvii, 49 hlm.; ilus.; tab, 29 cm.

Series Title

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Call Number

T1553542024

PERANCANGAN TEKNIS SEQUENCE DAN SISTEM DEWATERING UNTUK MENCAPAI TARGET PRODU…

PT Duta Bara Utama is a mining company with a Mining Business License Area of 1,967 hectares. The company targets production of 2 million tons of coal with SR 3 by 2024. Pit and disposal design, unit requirement planning, and dewatering system planning are required to achieve the production target in 2024. Minescape 5.7 software will be a tool to produce pit and disposal sequence designs, while…

ANALISIS KESESUAIAN RELATIVE BULK STRENGTH MENGGUNAKAN BAHAN PELEDAK LOW DENS…

PT Kaltim Prima Coal uses blasting method in the interburden removal process. Blasting is declared successful if the fragmentation and digging rate produced meet the reference standards, which is related to the use of powder factor. To reduce the powder factor but still produce optimal blasting, PT Kaltim Prima Coal applies the use of low density explosives that can be varied and adjusted in en…

KAJIAN TEKNIS PERENCANAAN DESAIN PELEDAKAN UNTUK MENGURANGI GETARAN TANAH DI …

The impacts of drill and blast activities is ground vibration. A limit of PPV according to SNI is 5 mm/s for buildings with foundations, masonry and cement. The average PPV in this blasting activity is 2 mm/s. The community is complain that level of ground vibration produced was still felt and worried damage the building. So, PT Bukit Asam Tbk has made a regulation of the ground vibration is â‰â€¦

ANALISIS KELAYAKAN INVESTASI PENAMBANGAN PASIR SUNGAI MUSI PULOKERTO UNTUK IN…

Geneirally, miost oif thie exisiting faicilities anid infraistructure uise conicrete constiructioin, wheire tihe mixeid mateirial tio miake coincreite iis oine oif thiem usiing saind. Tio prioduce qiualiity reaidy-mixied coincrete foir buiilding coinstructiion, saind quaility thiat meetis Indionesiian natioinal standarids iis reiquired. Theirefiore, ai studiy wias coniducited tio anailyze tihe …

KAJIAN PERANCANGAN LOKASI CHANGE SHIFT UNTUK MEMINIMALISIR ABNORMAL CYCLE MEN…

PT Pama Persada Nusantara is one of the contractor companies at PT Bukit Asam Tbk. who is responsible for managing the MTBU Site which is located in Lahat Regency, South Sumatra with an area of 2,886 Ha and uses conventional methods with a total of 22 fleets divided into 2 work shifts with an effective time of 21.6 hours. Shift changes are carried out at 3 location points (CS 1, CS 2, CS 3) wit…

OPTIMALISASI MANAJEMEN STOCKPILE DALAM UPAYA MEMPERTAHANKAN KUALITAS DAN KUAN…

PT Duta Bara Utama merupakan salah satu perusahaan yang bergerak di bidang pertambangan batubara yang mengelola stockpile di area site penambangannya. Pada awal November, stok batubara yang tersisa di stockpile tercatat sebesar 316.887,14 ton. Jumlah stok yang relatif besar ini disebabkan oleh tercapainya target penjualan sebesar 1,1 juta ton, sesuai dengan Rencana Kerja dan Anggaran Biaya (RKA…

RANCANGAN SUMP PADA PENAMBANGAN BATUBARA DI PIT 3 TIMUR BANGKO BARAT PT. BUKI…

Coal mining activities at Pit 3 East Banko Barat PT. Bukit Asam, Tbk uses the surface mining system method. Coal mining with an open system is strongly influenced by weather factors, where weather can have an impact on mining operational activities. Based on field observations, Pit 3 East Banko Barat does not yet have a main sump, causing the mining front to be flooded. On this basis, a main su…

KAJIAN RENCANA PENGGUNAAN SHOVEL KOMATSU PC 3000-6 DAN BELAZ 75135 TERHADAP D…

Pit X TAL Utara PT Bukit Asam plans to replace the excavation and haulage equipment with larger capacity due to increased production. If a tool is above the ground it will provide ground pressure which ground pressure from this tool must be smaller than the value of the bearing capacity of the soil. Therefore, Dynamic Cone Penetrometer (DCP) testing is carried out to determine the value of soil…

ANALISIS PENGARUH HGI (HARDGROVE GRINDABILITY INDEX) BATUBARA TERHADAP WAKTU …

Coal has different HGI (Hardgrove Grindability Index) values, in the Inul East pit of PT Kaltim Prima Coal which has 15 coal seams, some of which are seams K1, K4, K6, K12, K14 and K17LR which are divided into 3 products namely: Melawan, Pelikan 4800, and Pelikan 4300. This research aims to see the effect of coal HGI value on Cat 6015 backhoe digging time. The data processing used in this resea…

PERENCANAAN TEKNIS SEQUENCE PENAMBANGAN BATUBARA TRIWULAN (I, II, III, IV) TA…

PT Dizamatra Powerindo adalah perusahaan pertambangan dengan Wilayah Izin Usaha Pertambangan seluas 971 hektar. Perusahaan ini menargetkan produksi sebesar 3,4 juta ton batubara pada Pit 04. Maka dari itu, diperlukan perencanaan dan redesign pit, kapasitas disposal, dan banyaknya unit yang dibutuhkan agar target produksi pada tahun 2024 tercapai. Software Minescape 5.7 akan menjadi alat bantu u…

EFEKTIFITAS PENGGUNAAN CARA PEMADATAN UNTUK MENCEGAH TERJADINYA SWABAKAR PADA…

Coal produced from the mining front in general are not directly sent to consumers but stacked temporarily in a buildup place called stockpile.The main problem that company has to in the buildup of temporary coal stockpile is spontaneous combustion. Therefore, the compaction method is used to prevent a spontaneous combustion. From the results of studies in the field, it is found that the tempora…

ANALISIS PEMANFAATAN BAUKSIT UNTUK MEMENUHI KEBUTUHAN PEMBUATAN SEMEN GEOPOLI…

Bauksit merupakan hasil proses pelapukan dari batuan granit yang di dalamnya terkandung bebagai mineral, salah satunya mineral boehmit (Al2O3) yang merupakan salah satu bahan yang digunakan dalam bahan baku pembuatan semen geopolimer. Untuk kadar Al2O3 dalam pembuatan semen geopolimer menurut Muchtar Aziz, Azahri (2014) yaitu 65,23%. Umumnya kadar Al2O3 hasil tambang tidak sesuai atau tidak men…

EVALUASI PRODUKTIVITAS METODE RIPPING PADA PENGUPASAN OVERBURDEN DI PT. PRIMA…

PT. Prima Mulia Sarana Sejahtera merupakan salah satu dari perusahaan swasta yang bergerak di bidang penambangan batubara. Dalam rangka penambahan kapasitas produksi perusahaan, diperlukan peningkatan produktivitas pada kegiatan pengupasan tanah penutup, terutama pada kegiatan ripping overburden. Kegiatan ripping pada pengupasan overburden menggunakan dozer komatsu D375A unit DZ253 dan DZ265. P…

ANALISIS PENENTUAN NILAI POWDER FACTOR UNTUK PEROLEHAN FRAGMENTASI BATUAN YAN…

PT. Berau Coal is known as a mining company engaged in the coal industry. In coal production, it is necessary to dismantle overburden by drilling and blasting. The standard of blasting operation in Pit E Blok 7 Binungan Mine Operation 2 is fragmentation ≤50 cm produced more than 60% and powder factor 0,21 kg/bcm. The drilling methods used are single rod and double rod. Based on field observat…

ANALISIS KEMAJUAN INSTALASI PENYANGGAAN TAMBANG BAWAH TANAH PADA PEKERJAAN RE…

PT. Freeport Indonesia (PTFI) merupakan salah satu perusahaan yang bergerak dalam bidang industri pertambangan mineral. PT. Freeport Indonesia berlokasi di Kabupaten Mimika, Provinsi Papua. Penelitian ini dilakukan karena nilai linear meter penyanggaan tambang bawah tanah yang digunakan pada saat ini perlu dirubah menyesuaikan dengan keadaan aktual lapangan di area Mill Level Adit (MLA) terkini…

KAJIAN TEKNIS PENGELOLAAN LINGKUNGAN STOCKPILE BATUBARA DI PT. BUKIT ASAM, TB…

PT Bukit Asam Tbk is a state-owned company (BUMN) which was established on March 2, 1981 in accordance with PP No. 42 of 1980 on December 15, 1980. The company is headquartered in Tanjung Enim, South Sumatra. The company has two coal ports, namely those in Palembang, South Sumatra, namely the Kertapati Coal Pier and those in Bandar Lampung, namely the Tarahan Coal Port. ROM (Run of Mine or Raw …

EVALUASI PRODUKTIVITAS ALAT GALI MUAT DOOSAN DX 520 DAN ALAT ANGKUT HINO FM 2…

In general, the productivity of mechanical devices is a value that shows the amount of material production that can be done by both loading and transporting equipment in a certain unit of time. The size of the productivity of the loading and digging tool depends on the factors that influence it. Basically, the ability of tools and humans has limits in maximum use because of small obstacles that…

ANALISIS PENGARUH PERUBAHAN GEOMETRI PELEDAKAN TERHADAP FRAGMENTASI DAN DIGGI…

Dengan tingginya laju produksi, PT Kaltim Prima Coal (PT KPC) harus selalu melakukan inovasi agar seluruh tahapan dapat dilaksanakan secara optimal dan efisien, terutama pada tahap pemboran dan peledakan. Salah satu faktor penting keberhasilan suatu operasi peledakan dilihat dari fragmentasi hasil peledakan dimana hal tersebut akan berdampak pada aktivitas gali muat material. Berdasarkan data d…

EVALUASI KINERJA BULLDOZER CAT D6R2 XL UNTUK MENCAPAI TARGET DOZING OVERBURDE…

The bulldozer performance at Tata Bara Utama in the disposal area had not yet reached the target, so an evaluation of the bulldozer is needed to achieve the dozing target and the dozing pattern of the bulldozer. This research was conducted using a field survey to collect primary and secondary data, then proceed with analyzing the data that has been obtained. The results of this study were that …

ANALISIS KEMANTAPAN LERENG DITINJAU DARI KOMPOSISI MINERAL PADA FORMASI LEREN…

Slope stability is an important factor in the sustainability of the mining process, a stable slope will reduce potential losses due to cladding. A waste dump/disposal area is an area in an open pit mining operation that is used as a place to dispose of low-grade material and/or non-ore materials such as overburden and interburden. The east block heap slope of the Muara Tiga Besar Utara is a hoa…

MODIFIKASI GEOMETRI PELEDAKAN UNTUK MENGURANGI BOULDER DI LOKASI PNBP LIMESTO…

PT Semen Padang (persero) Tbk is one of the cement producers in Indonesia and is part of the Semen Indonesia Group (SIG). In the unloading of limestone at PT Semen Padang (Persero) Tbk, drilling and blasting activities are carried out, the company has a standard of supervision of the performance of the PT Dahana (Persero) blasting service, namely the size of the blasted rock which is ≤80 cm i…

RANCANGAN PENAMBANGAN BATUAN ANDESIT DI PT BIMA SHABARTUM WIJAYA, KABUPATEN O…

Andesite is one of the rock mining commodities that is useful in building infrastructure in the Baturaja area. In 2023, PT Bima Shabartum will mine in the South Ogan Komering Ulu district, so data is needed to prepare the mining process, namely regional geological data, pit limit design data, and mine road planning. Therefore, the authors conducted research to obtain these data. Prospecting act…

ANALISIS PENINGKATAN KUALITAS MINERRAL HEMATIT PADA PASIR BESI UNTUK MEMENUHI…

Iron sand is a sand deposit that contains various minerals in it, including the hematite mineral (Fe2O3) which is one of the materials used in the cement manufacturing industry. The Fe2O3 grade in the iron sand used for cement manufacture must comply with the cement manufacturing standard, which is 76,21%. Usually, the Fe2O3 grade contained in the iron sand from mining practice does not reach t…