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Journals Mining Engineering : Bina Tambang

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Published by Universitas Negeri Padang

ISSN : - EISSN : 23023333 DOI : -

Core Subject : Science,

Earth & Planetary Sciences

Atas dukungan dari jurusan Teknik Pertambangan dengan Penanggung Jawab Dekan Fakultas Teknik UNP (Drs. Ganefri,MPd, P.hd) bekerjasama dengan Ketua Jurusan Teknik Pertambangan (Drs.Bambang Heriyadi,MT) dan seluruh Dosen Jurusan Teknik Pertambangan Fakultas Teknik Universitas Negeri Padang. Jurnal ini terbentuk dan didukung penuh untuk sarana kretifitas Dosen dan Mahasiswa Teknik Pertambangan.

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Articles 609 Documents

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PERHITUNGAN SUMBERDAYA TERUKUR BATUBARA DAN PERANCANGAN PIT PADA AREA PIT C PT. PIPIT MUTIARA JAYA (PT.PMJ) SITE BEBATU, DESA BEBATU KEBUN, KECAMATAN SESAYAP HILIR, KABUPATEN TANA TIDUNG, PROVINSI KALIMANTAN UTARA. Dody Iswandi; Tamrin Kasim; Murad Murad
Journals Mining Engineering : Bina Tambang Vol 3, No 2 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

PT. Pipit Mutiara Jaya is one of the companies engaged in mining, especiallycoal. The company is located in Bebatu Village, Sesayap downstream, Tana Tidung,North Kalimantan Province. PT. Pipit Mutiara Jaya is applying an open pit systemand is currently engaged in mining and exploration activities. The area explorationis called Pit CFG. After the company undertook detailed exploration activities thecompany has not conducted data processing to determine the quantity of measuredcoal resources, the value of stripping ratio, and the design pit at Pit C PT. PipitMutiara Jaya.Coal exploration was conducted on coal seam with research area + 24 ha.The information used in estimating the measured coal resource in the study areacame from 146 drill hole data and the mean distance between 50 meter drill holeswith the average depth of 60 meter borehole. Result of calculation of coal resourceby using method of polygon in mining software. Total of overburden is 12.488.344bcm which consist of amount of overburden, mud and the consecutive amount ofmix material is 3.309.185 bcm, 6.119.439 bcm and 3.059.719 bcm then total coaltonnage is 1.296 .445 tons consisting of 101B1 866.901 ton and 101H 429.544 tonsof seam and the stripping ratio is 1: 9,63.Keywords: exploration, coal, mine, drill, resource, polygon, overburden, seam,stripping ratio, pit

Perencanaan Teknis Dan Anggaran Biaya Sistem Penyaliran Tambang Pada Tambang Terbuka Batu Andesit PT. Anshar Terang Crushindo Pangkalan Kabupaten 50 Kota Provinsi Sumatera Barat Wirmanto Wirmanto; Tamrin Kasim; Murad Murad
Journals Mining Engineering : Bina Tambang Vol 4, No 1 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. PT. Ansar Terang Crushindo is one of a company working in the mining of andesite, located Jorong Pauah Anok Nagari Pangkalan Kecamatan Pangkalan Kabupaten 50 kota Sumatera Barat. Draining system applied in PT Ansar Terang Crushindo is a mine dewatering system. When rainy season, rainfall the higher so as to discharge some runoff who entered the mine is getting higher it leads to the increasing the volume of water that accumulated on sump, so sump overflows and can not accommodate the incoming water. Water that has been gathered at sump will is pumped to open channels for later diverted back out mine to river. From the results of research and observation catchment areas in PT. ATC is 3,1 hectares. The capacity of optimal sump to cover the water runoff and groundwater is 3.050 m. The minimum pump discharge needed to remove water is 0.00553 m3 / second and the pumping time is at least 9 hours per day. The pump used is a Centrifugal Niagara Self Priming pump with a total head of 18 meters, a maximum installed capacity of 0.0395 m3 / second and a maximum rotation of 1700 rpm of 1 unit. The results of pumping are channeled to the open channel, the shape of the open channel section made is trapezoid, the dimensions of the surface width are 1 m, the base width is 0.5 m, the depth is 0.5 m. Then from the open channel is passed to the mud settling pond (settling pond) which has 2 compartments. The total cost of the mine drainage system is Rp. 56.636.523.Keywords: Andesit Stone, Catchment Area, Sump, Pump, cost

Evaluasi Kinerja Unit Crushing Plant dalam Upaya untuk Meningkatkan Target Produksi Batu Split di PT Semen Padang Mutia Sri Rezeki; Murad Murad
Journals Mining Engineering : Bina Tambang Vol 3, No 3 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

PT Semen Padang is a manufacturer of cement in Indonesia and also split stone production. Split stone is processed by using the crushing plant. Based on data of split stone production at PT Semen Padang in March 2018, the company’s split stone target production of 18.900 tons/month was not reached. At the same time, the actual production obtained was 3.799,23 tons/month. This is caused by many disturbances of repair time during split stone processing and wore out the jaw crusher, so that the effective working time being reduced. Related to this problem it is necessary repair to increase split stone production target. Repair made is reduction of repair time such as replacement motor pulley and reversal of liner jaw crusher because wearing out. The result obtained pf this research after the repair occured reduction of repair time, so that effective working time became increased, the value of avaibility became increased, and effectiveness of jaw crusher also increased. The production of split stone obtained in April was 43,03% in which split stone production in March was 3.799,23 tons/month increased to 5.472,23 tons/month in April. Keywords: Production, Crushing Plant, Split Stone, Disturbance, Repair Time

ANALISIS PERBANDINGAN BIAYA PENGGUNAAN ALAT ANGKUT RDT TEREX TR60 DENGAN RDT EUCLID R60 PADA PENAMBANGAN OVERBURDEN DI PIT E UTARA PT. KARBINDO ABESYAPRADHI Prismark Dhonald Mirzha; Murad Murad; Fadhilah Fadhilah
Journals Mining Engineering : Bina Tambang Vol 1, No 2 (2014): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

In the overburden mining activities in the North Pit E, PT. Karbindo Abesyapradhi using two brands about conveyance of rigid dump trucks Terex TR60 and Euclid R60 rigid dump truck. From the gained information, conveyance TR60 rigid dump truck is a new conveyance. While the conveyance Euclid R60 rigid dump truck is a long conveyance.Known to owning operating cost of conveyance Euclid R60 rigid dump truck US $ 93.63, while owning the operating cost conveyance of rigid dump trucks TR60 US $ 131.75. Then from the calculation of the productivity of the authors received, productivity Euclid R60 rigid dump truck better than productivity conveyance of rigid dump trucks Terex TR60. About productivity Euclid R60 rigid dump truck 56,796 BCM/h, while the productivity of rigid dump trucks Terex TR60 48,896 BCM/h.Then owning operating cost is divided by the productivity of the production cost to gain conveyance to determine which is more beneficial. And note the cost production of rigid dump trucks terex TR60 2,694 USD/BCM, while the cost production of rigid dump trucks Terex TR60 US $ 1,648. Based on the results gained, conveyance Euclid R60 rigid dump truck is more profitable than the conveyance of rigid dump trucks Terex TR60. And advised if the company wants to procure the means of conveyance. Better to choose Euclid R60 rigid dump truck. Key word : Owning Cost, Operating Cost, Productivity, Cost of Production

RANCANGAN DAN ANALISIS BIAYA SISTEM PENYALIRAN TAMBANG PIT TIMUR PT. ARTAMULIA TATAPRATAMA, KABUPATEN MUARO BUNGO, PROVINSI JAMBI Rizkien Putra; Tamrin Kasim; Ansosry Ansosry
Journals Mining Engineering : Bina Tambang Vol 3, No 1 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Rancangan sistem penyaliran di PT. Artamulia Tatapratama belum optimaluntuk menangani air yang masuk ke pit tambang baik air limpasan maupun airtanah. Catchment Area pada daerah penelitian dibagi menjadi 4 bagian, luasnyasecara berurutan adalah 43,33 Ha, 63,01 Ha, 60,26 Ha dan 20,2 Ha. Debit air totalmasing-masing catchment area secara berurutan adalah 1,456 m3/detik, 2,492m3/detik, 2,133 m3/detik dan 1,532 m3/detik. Volume tampungan optimal mainsump, temporary sump central, serta temporary sump timur secara berurutan adalah90.317,5 m3, 23.285,5 m3, 96.785,5 m3serta. Saluran terbuka yang direncanakanyaitu pada catchment area I, dimana saluran terbuka bertujuan untuk mencegah airmasuk ke front penambangan. Pompa yang digunakan adalah pompa Multiflo MF-420E 2 buah pada main sump dan CF-48H masing-masing 1 buah pada temporarysump timur dan temporary sump central. Besar debit pompa yang harus ditampungsettling pond adalah sebesar 0,594 m3/detik, jadi volume settling pond yangdirencanakan adalah 21.264 m3. Biaya yang dikeluarkan untuk operasi pompaadalah sebesar Rp 3.187.000/jam. Sedangkan biaya yang dikeluarkan untukpembuatan sump keseluruhan adalah sebesar Rp 1.488.793.210,7. Biaya pembuatansaluran terbuka sebesar Rp 61.494.110,51 dan pembuatan settling pond adalah Rp101.435.538,4.

ANALISIS GROUND VIBRATION UNTUK MENDESAIN LERENG YANG STABIL PADA PENAMBANGAN BATU GAMPING CV TEKAD JAYA HALABAN KABUPATEN 50 KOTA SUMATERA BARAT Halimah Halimah; Adree Octova
Journals Mining Engineering : Bina Tambang Vol 3, No 4 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. Blasting activities can cause vibrations that disrupt the surrounding environment, one of which is slope. In the planning of slopes, the magnitude of vibration due to blasting is needed to design the stable slope. To determine the effect of blasting vibration as known as horizontal vibration acceleration (amax) on slope stability then measurements of blasting vibration were taken in 10 point surrounding the location of blasting. Based on the data obtained, the parameters of seismic wave that required are frequency, peak particle velocity (PPV) dan peak particle acceleration (PPA). However, internal factors such as the physical and mechanical properties of the rocks that make up the slope are also very needed. After processing the data, the predicted value of vibration at the point of slope is 0,01531 g and after slope evaluation using Bishop and Janbu methods, the impact of vibration on the slope is around 0,07 – 0,25. The final slope design parameters consist of a single slope with a height of 38 m and the angle of slope is 900. Safe limit of vibration blasting against the slope with trial and error test is 1,9 g. Keywords: Blasting Vibration, Planning of Slope, The Parameters of Seismic Wave, Rock Tests

ANALISIS KELAYAKAN INVESTASI MENGGUNAKAN METODA DISCOUNTED CASH FLOW TAMBANG GALENA PT. TRIPLE EIGHT ENERGY, KECAMATAN KOTO PARIK GADANG DIATEH KABUPATEN SOLOK SELATAN PROVINSI SUMATERA BARAT Dirga Sidauruk; Muhammad Giatman; Murad Murad
Journals Mining Engineering : Bina Tambang Vol 3, No 2 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

To perform the feasibility analysis of investment can be done by using severalmethods, PT. Triple Eight Energy with galena commodity using discounted cash flowas its method of analysis. Based on the calculation, obtained cash out flow of Rp649.289.950.100, cash in flow of Rp 2.361.317.978.504, NPV of Rp 789.154.337.450,payback period for 2 years 7,4 months, discounted payback period for 2 years 3, 5months, IRR of 30.98%, PI of 23.6300447. From these calculations it can beconcluded that, galena mine PT. Triple Eight Energy is economically viableKata kunci: analisis investasi, tambang galena, discounted cash flow

Analisa Investasi Pengadaan Alat Support Tambang (Bulldozer D8R) Untuk Efisiensi Kinerja Bulldozer D10T Pt Cipta Kridatama Job Site PT. Adimitra Baratama Nusantara, Sanga-Sanga, Kutai Kartanegara. Rijabul Mulia; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 4, No 1 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. During the excavation at the ABN site, PT CK was located in Kampung Jawa Village, Sanga-sanga District and Muara Kembang Village, Muara Jawa Subdistrict, Kutai Kartanegara District, East Kalimantan using a ripping unit with D10T bulldozer unit in breaking rocks. The purpose of ripping is to make the overburden material easier to dig by the loader and easy to haul by the conveyor. Looking at the open pit mining system where the Dozzer D10T is the main unit and is still used as a unit of support in achieving production targets, the authors "analyze investment procurement of mine support tools (Caterpillar D8R Bulldozer) for operational efficiency of Caterpillar D10T Bulldozer with IRR method" so that the D10T Dozzer unit designated as the main unit in production is not interrupted for support activities. Based on the results of observations in the field and data processing found D10T produces an IRR value of 75.47% by direct purchase, and 90.87% by leasing, at the value of NPV = 0. With the MARR value targeted by the company which is 16%, then investment this is declared feasible. Feasibility analysis for the D8R unit produces an IRR value of 154.83% by direct purchase, and 298.21% by leasing, at the value of NPV = 0. With the MARR value targeted by the company which is 16%, then the Invesatsi is declared feasible, and a leasing purchase system is highly recommended.Keywords: IRR, Ripping, Bulldozer, Analyze Investment, Operational Efficiency.

Evaluasi Sistem Penambangan Coking Coal untuk mencapai nilai Crucible Swelling Number (CSN) 3-7 di Pit Haju PT Pamapersada Nusantara Jobsite Adaro Met Coal di Kalimantan Tengah Fariz Aditya; Raimon Kopa
Journals Mining Engineering : Bina Tambang Vol 3, No 3 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

PT Pamapersada Nusantara Jobsite Adaro Met Coal is one of the company's pilot projects in world-class coking coal mining. The right technology and coking coal mining system must be implemented because the quality produced greatly affects the customer's trust. Coking coal is a type of coal that is used as a fuel as well as a reducing agent in the iron / steel industry. One important indicator in distinguishing the quality of coking coal with thermal coal types is the CSN (Crucible Swelling Number) test. Coking coal must have a CSN value of at least 3. Coking coal can decrease in quality due to contamination during the mining process. Based on problem analysis there are 3 mining activities that can affect the quality of coking coal, namely: front loading preparation activities, loading and hauling activities and coal accumulation activities in ROM stock. After applicated improvement of the mining system in each of these activities comprehensively and then pouring it into the SOP design for coking coal mining, the CSN value was increased by 66% and the ash value decreased by 43%.Keywords: Preparation Front Loading, Loading and Hauling Activities, Coal Accumalation Activities, CSN and Ash

ESTIMASI SUMBERDAYA BATUBARA TERUKUR DI BLOK TIMUR IUP PT. SAROLANGUN PRIMA COAL, KABUPATEN SAROLANGUN, JAMBI Icksan Lingga Pradana; Raimon Kopa; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 1, No 1 (2014): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

ABSTRAKDaerah penelitian adalah Blok timur Wilayah Izin Usaha Pertambangan PT.Sarolangun Prima Coal dengan luas 1024 Ha. Metode yang digunakan untuk mengestimasi sumberdaya batubara di daerah penelitian adalah metode Cross Section dengan pedoman perubahan bertahap (Rule of Gradual Change) dan dengan pedoman titik terdekat (Rule of Nearest Point). Prinsip dari metode Cross Section Rule of Gradual Change, yaitu dengan menghubungkan titik pengamatan terluar, endapan batubara dianggap sama sepanjang garis lurus tehadap penghubung 2 (dua) titik. Sedangkan pada metode Cross Section Rule of Nearest Point, yaitu berpedoman pada titik terdekat, dengan membuat batas terluar endapan secara linear, panjang garis linear sama dengan batas blok, setengah jarak antara dua titik.Berdasarkan penaksiran sumberdaya batubara dengan menggunakan metode Cross Section dengan pedoman perubahan bertahap (rule of gradual change) dengan jarak antar sayatan 100 meter dan diperoleh sumberdaya batubara terukur (Measured Coal Resource) seam A dan seam B adalah sebesar 28.304.358,40 Ton. Volume overburden dan interburden yang didapatkan adalah sebesar 182.835.816 Bcm dengan Stripping Ratio(SR) 6 : 1. Metode Cross Section dengan pedoman titik terdekat (rule of nearest point) dengan jarak antar sayatan sebesar L1 50 meter dan L2 50 meter diperoleh sumberdaya batubara terukur (MeasuredCoal Resource) seam A dan seam B adalah sebesar 29.232.773,1 Ton, serta volume overburdendan interburden yang didapatkan adalah sebesar 189.104.302,6 Bcm. dengan Stripping Ratio(SR) 6 : 1.ABSTRACTThe research area is at the Region east block of Licensed Mining Company of PT. Sarolangun Prima Coal with area of 1024 Ha. The method being used to estimate the coal resource at the research area is Cross Section method with Rule of Gradual Change and with Rule of Nearest Point. The principle of Cross Section Rule of Gradual Change method is by relating the outermost observation points, the coal deposits considered to be the same throughout straight line connecting the two points. Whereas, at the Cross Section Rule of Nearest Point method, which is based on the nearest line, it is by making the outer boundary deposit linearly, where the length of the linear line is the same as the block boundary, it is a half distance between two points.Based on the coal estimation using Cross Section Rule of Gradual Change method with the distance between slices is 100 metres, the Measured Coal Resource of seam A and seam B is as big as 28.304.358,40 Tons. The acquisited overburden and the interburden volumes are as big as 182.835.816 Bcm with 6:1 Stripping Ratio (SR). Cross Section Rule of Nearest Point method where the distance between slices of L1 is 50 meters and L2 is 50 meters, a Measured Coal Resource of seam A and seam B can be acquisited as big as 29.232.773,1 Tons. The obtained overburden and interburden volumes are as big as 189.104.302,6 Bcm with 6:1 Stripping Ratio (SR)Kata kunci: Sumberdaya Batubara, Metode Cross section, Stripping Ratio

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