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Journals Mining Engineering : Bina Tambang
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.
Arjuna Subject : -
Articles 609 Documents
 51   52   53   54   55 
Penerapan Metode HIRARC dalam Menganalisis Risiko Bahaya dan Upaya Pengendalian Kecelakaan Kerja di Area Crusher dan Belt Conveyor PT. Semen Padang Bianda F Aprilla; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 8, No 1 (2023): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v8i1.122189

Abstract

PT. Semen Padang is a mining industry closely related to the field activities of its workers. Each type of mining work has potential and hazard factors with various risks that lead to work accidents, especially in the crusher and belt conveyor areas. This study aims to identify the hazard risks, analyze the severity of each hazard risk and its risk category, and apply the HIRARC method in controlling the hazard risks found in the crusher and belt conveyor areas of PT. Semen Padang. This research is a qualitative research with descriptive method using hazard risk analysis in the form of likelihood and consequence, as well as risk matrix analysis and the HIRARC method to determine hazard control. Based on the research results, it can be seen that 12 types of hazard risks were found in the crusher area and 8 hazard risks in the conveyor belt area of PT. Semen Padang from 2018 to 2021 with a hazard severity level of 60% in the medium category, 25% in the high category, and 15% in the low category. The HIRARC method applied in controlling these risks includes: Elimination, Substitution, Engineering, Administration, and PPE.
Produktivitas Mosher II Penambangan Silika Tambang Kuari PT Semen Padang Chita Annisa Putri; Adree Octova
Journals Mining Engineering : Bina Tambang Vol 8, No 1 (2023): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v8i1.122195

Abstract

In the Industrial Field Practices that have been carried out at PT Semen Padang, the author has an interest in the disturbances that occur in the Mobile crusher. The Mobile Crusher (Mosher II) is a silica processing tool which has the function of separating silica material from other materials such as tuff and basalt to further refine the silica material so that it meets the requirements for distribution to factories. During its implementation in the field, problems were encountered related to the crushing of silica materials, including damage to the chain feeder and a clogged chute, so that the operation of Mosher II had to be temporarily stopped. The obstacles encountered will affect the productivity of Mosher II and the amount of efficient working time. From Industrial Field Practice Activities in January 2018 the productivity target of Mosher II for silica mining is 900 tons/hour. The actual data obtained in the field for the productivity of Mosher II as a silica processing tool did not reach the desired target of 837.82 tons/hour. For the Mosher II operating time obtained 89.167 hours. And the efficiency of Mosher II is 43.96%
Evaluasi Teknis Sistem Penyangga Berdasarkan Metode RMR-System Pada Lubang D-25 L3 Tambang Batubara Bawah Tanah PT. Dasrat Sarana Arang Sejati (PT. DSAS), Kota Sawahlunto, Sumatera Barat. Aldo Surya Pratama; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 8, No 1 (2023): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v8i1.121836

Abstract

The potential for instability that occurs in rock when digging opening underground will usually always require special handling which functions for two things, the safety of workers and the safety of equipment contained in the mine. This study aims to determine rock mass class, support strength value, opening safety factor and support safety factor, and recommendations for safe supports based on rock class and support dimensions. The weighting of rock mass classes is carried out using the RMR-System method based on Bieniawski 1989. This analysis is carried out by weighting rock values based on parameters: rock compressive strength values, rock quality designation values, discontinuity spacing values, discontinuity condition values, groundwater values , and the joint orientation value to the tunnel. The results of the analysis are rock mass class values, rock strength, failure potential, stand up time values, and support recommendations based on rock mass class values. From the results of theanalysis at 100 m progress from the canopy, class III (Fair Rock) results were obtained for the tunnel wall which was coal, and class II rock (Good Rock) for the roof rock which was siltstone. From the results of the analysis of the strength of the supporting wood based on the wood strength class, it was found that the supporting wood used by PT. DSAS is included in class III wood which has a wood bending strength value of 702.5 kg/cm2 and a wood compressive strength value of 412.5 kg/cm2. Actual FK caps and side posts in hole D-25 L3 PT.DSAS were 1.37 and 5.80 with an average support distance of 1.83 m. FK stamp is still categorized as unsafe because it is below 1.5, so a buffer evaluation is carried out with a buffer distance of 1.67 so that FK ≥ 1.5 is obtained.
ANALISA KESTABILAN LERENG DENGAN METODE JANBU MENGGUNAKAN SOFTWARE SLIDE 6.0 PADA AREA JALAN TAMBANG CV. PUTRA IDOLA, KOTA PADANG, PROVINSI SUMATERA BARAT Muhammad Kelvin Varlen; Bamabang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 8, No 1 (2023): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v8i1.122173

Abstract

Abstract. CV. Putra Idola is one of the companies engaged in the mining business with the type of minerals being mined is Andesite stone located in Nagari Siguntur Muda, Bungus Teluk Kabung District, Padang City, West Sumatra. The mining activity applied is an open pit mining system with the Open Mining method. On the slopes of the mine road CV. Putra Idola has 2 single slopes with the material for making the slopes is andesite stone. On single slope 1 there is a transportation road for mining operations, while on single slope 2 there is a settling pond. The slope of the research area has a slope height of 17 meters and a slope of 35o for single slope 1, and for single slope 2 it has a height of 19 meters with a slope of 32°. The overall slope is 31 meters high with a slope of 62o. On the slope walls there are many weak areas and rock layers, so that the prone slopes will be at risk of landslides, so a good calculation is needed to avoid landslides.The results of the actual slope analysis using the simple Janbu method, the safety factor (FK) on slope 1 is 1,263 when natural conditions when the slope is saturated has a safety value (FK) of 1,239. The value of safety factor (FK) on slope 2 is 1.666 under natural conditions, while when the slope is saturated it has a safety factor value (FK) of 1.625 On the slopes as a whole obtained a safety value (FK) of 1,079 when the natural condition and 1,063 when the slope is saturated. Mine slope geometry recommendations based on the results of slide 6.0 software analysis obtained the value of safety factor (FK) for slope 1 of 1.325. while in a saturated state the safety factor (FK) is 1.300 with a slope of 17 m and a slope of 68°. The overall slope geometry recommendation based on slide 6.0 software analysis obtained a safety value (FK) of 1.329. while in a saturated situation the safety yield (FK) is 1.311 with a slope of 31 m and a slope of 49°
Rancangan Teknis Dan Analisis Biaya Reklamasi Pada Area In Pit Dump X Site Pulau Pakal PT. Aneka Tambang Tbk. UBPN Maluku Utara Hafizurahman Dwi Saputra; Rusli HAR; Mulya Gusman; Tri Gamela Saldy
Journals Mining Engineering : Bina Tambang Vol 8, No 1 (2023): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v8i1.122149

Abstract

PT. Antam Tbk. UBPN Maluku Utara has converted a former mining land into an in-pit dump for the disposal of low-grade cover soil and materials. If the area is already covered by cover soil, the area must be immediately reclaimed. Special treatment and attention are required in handling waste materials in the X in-pit dump area, as the waste material belongs to PAF material which has the potential to cause acid rock drainage problems. Based on the calculation, the bench width is 3.5 m, the single slope slope is 350, the height is 8 m and the backslope is 5%. Based on measurements, the area of stage 1 is 19,537.182 m2, stage 2 is 21,537.501 m2 and stage 3 is 13,086.461 m2. From the calculation of material 1volume, different results were obtained between the existing landfill plan, with the estimated regrading completion time ranging from 37 to 151 days, and for 19 days for revegetation in stage 1, stage 2 for 24 days and stage 3 for 13 days. For the check dump, the total volume is 10,565.62 m3 with a completion time of 14 days. The total reclamation cost ranges from Rp 451,223,407 to the largest Rp 35,365,018,549.
Analisis Sistem Ventilasi Tambang Batubara Bawah Tanah Untuk Kebutuhan Operasional Penambangan Pada Lubang Tambang C.2-I Job Site Sapan Dalam PT. Nusa Alam Lestari Parambahan Kota Sawahlunto Insani Sabilillah; Bambang Heriyadi; Jukepsa Andas; Refky Adi Nata
Journals Mining Engineering : Bina Tambang Vol 8, No 1 (2023): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v8i1.122252

Abstract

PT. Nusa Alam Lestari is an underground coal mining company located in Salak Village, Talawi District, Sawahlunto City, West Sumatra. Ventilation system at mine pit C.2-I Job Site Sapan Dalam PT. Nusa Alam Lestari uses a blow system. This study aims to evaluate the quality and quantity of ventilation systems for underground coal mines in accordance with the Decree of the Minister of Energy and Mineral Resources No. 1827 K/30/MEM/2018 and Decree of the Director General of Minerba and ESDM No. 185 K/37.04/DJB/2019 with parameters which include gas content, relative humidity, effective temperature value, work efficiency value and air quantity for mining operational needs. At mine pit C.2-I there is an advanced front and six mining branches. The average temperature measurement results in the working front of the C.2-I mine pit are 29.6oC and with an average humidity measurement result of 94.6%. This temperature value has passed the set threshold between 18oC - 27oC and the humidity has also passed the set threshold, which is 85%. In addition, the C.2-I mine pit does not apply a suction ventilation system, so that dirty air is not immediately transported out. The ventilation system applied to the C.2-I mine pit can only meet 70% of the air demand, so it is necessary to evaluate and design a new ventilation system. The design of the ventilation system is carried out by making a tail gate from the Cross Cut to the surface with an elevation of 15o with a length of 170 m. The end of the through hole is given an 18 inch Centrifugal Exhaust Fan, to suck in dust and dirty air. Making mining layouts using AutoCAD and design simulations using the Ventsim program. The results of the analysis show that the quantity of air in the C.2-I mine hole has increased from 4.08 m3/s to 7.38 m3/s. The design of the new ventilation system results in compliance with the values of air quality and quantity.
Estimasi Cadangan Batubara PT. Pancaran Surya Abadi, Kecamatan Muara Badak-Anggana, Kabupaten Kutai Kartanegara, Provinsi Kalimantan Timur Andres Melbaral; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 8, No 1 (2023): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v8i1.122190

Abstract

Abstract. PT. Pancaran Surya Abadi is a private company engaged in coal mining, this company performs coal mining using the open pit mining method. Based on the Decree of the Minister of Energy and Mineral Resources No. 1827 K of 2018, concerning Guidelines for the Implementation of Good Mining Rules, states that every mining company is required to report a plan for managing the remaining reserves in its territory as part of conservation, and with the increase in coal prices, the company plans to expand the mining area in the northern PIT with a PIT limit from SR 1:4 to SR 1:5 by conducting PIT design and coal reserve estimation. From the PIT design, the calculation results of the area that will be used as a potential PIT is approximately 50 Ha. Calculation of reserves at PT. Pancaran Surya Abadi uses a comparison of the Conventional method (Triangle) with the Geostatistical method (Ordinary Kriging). From the results of the estimated reserves, the coal in PT. Radiant Surya Abadi if calculated using the Triangle Method, the total reserve value is 3,719,204.50 tons, while if it is calculated using the Ordinary Kriging Method, the total reserve value is 4,079,375.50. The conclusion of this research is that the calculation method that is considered correct is the Ordinary Kriging Method because it tends to produce block estimates that are more evenly distributed or less varied than the actual levels.
Analisis Rancangan Kestabilan Lereng Sidewall Tambang Batubara KUD Sinamar Sakato, Kabupaten Dhamasraya, Provinsi Sumatera Barat Rahmat Zulmy; Bambang heriyadi
Journals Mining Engineering : Bina Tambang Vol 8, No 1 (2023): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v8i1.122380

Abstract

KUD Sinamar Sakato merupakan suatu perusahaan yang bergerak pada bidang pertambangan batubara yang berlokasi di Jorong Sinamar, Nagari Sinamar Kecamatan Asam Jujuhan, Kabupaten Dhamasraya. Pada lereng sidewall terdapat danau dengan luas area 32.058 m2 dan kedalaman danau mencapai 30 meter. Tekanan air yang ada di danau menyebabkan meningkatnya gaya penggerak pada lereng sidewall tambang batubara KUD Sinamar Sakato. Akibat besarnya gaya penggerak dari pada gaya penahan akan menyebabkan terjadinya kelongsoran pada lereng sidewall tambang batubara KUD Sinamar Sakato. Maka itu diperlukan kajian geoteknik seperti uji sifat fisik dan sifat mekanik pada sampel batuan, nilai faktor keamanan aktual dari lereng sidewall, memberikan rekomendasi geometri lereng sidewall dengan ketentuan Kepmen 1827 K/ME/30/2018. Analisis faktor keamanan (FK) dan rekomendasi geometri lereng dengan metode bishop simplified. Hasil yang didapat dari penelitian, pertama dilakukan pemodelan didapatkan nilai faktor keamanan kritis pada lereng aktual sidewall di KUD Sinamar Sakato dengan menggunakan metode bishop simplifiet sebesar 1,041. Kedua, Setelah dilakukan permodelan pada lereng sidewall dengan melakukan resloping sudut overall sebesar 53 derajat, dengan geometri lereng terdiri dari 2 slope, memiliki sudut lereng tunggal sebesar 65, dari geometri tersebut didapatkan nilai faktor keamanan lereng sidewall menggunakan metoda bishop simplified sebesar 1,315. Ketiga, rekomendasi geometri lereng keseluruhan terdiri dari 3 slope dengan sudut overall sebesar 41 derajat, sudut lereng tunggalnya sebesar 65 derajat dan tinggi lereng tunggalnya sebesar 22 m, dengan menggunakan metoda bishop simplified didapatkan faktor keamanan lereng sidewall sebesar 1,302
Evaluasi Teknis dan Ekonomi Geomteri Peledakan Terhadap Fragmentasi Batu Andesit dan Biaya Peledakan PT. Atika Tunggal Mandiri, Nagari Manggilang, Kecamatan Pangkalan Koto Baru, Kabupaten Lima Puluh Kota, Provinsi Sumatera Barat Ade Muthia Febriyanti; Rizto Salia Zakri
Journals Mining Engineering : Bina Tambang Vol 8, No 2 (2023): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v8i2.123652

Abstract

From the results of observations at PT. Atika Tunggal Mandiri saw a lot of fragmentation resulting from blasting which produced boulder. The results of blasting based on company standards is 80% with a size of 50 cm. So, the percentage of boulder that can be tolerated by the company is only ± 20%. Meanwhile, from the observation results, it was found that from blasting activities in the field, 45.28% boulder was obtained. So, the results of blasting in the field still produce boulder in excess of the desired amount. The objective of this research is to obtain the results of comparison of actual fragmentation and R.L Ash, as well as actual and proposed blasting costs. The research method is the calculation of R.L. Ash and blasting test results in the field with 40 trial holes using the splitdesktop software method. Tests carried out in the field with the calculation of the theory of R. L. Ash 40 blast holes obtained the percentage of fragmentation size >50 cm at 2.34% which was retained (boulder) and escaped by 97.66%. The results can be used as a reference for companies to consider evaluating and analyzing blast geometry. The results of the analysis of aqueous blasting costs Rp. 8,137,59 /ton, the geometric blasting cost proposed by R. L. Ash theory is Rp. 9,474,79 /ton, and the geometric blasting cost of Proposed C. J. Konya is Rp. 9,890,17 /ton. The author prefers the proposed blasting geometry according to Geometry R. L. Ash to be tested in the field because the Powder Factor value is smaller and better because the Powder Factor value is smaller. 
Kajian Teknis Produktivitas Belt Conveyor Jalur 7.1 Dalam Pengiriman Limestone Ke Storage Indarung VI pada PT. Semen Padang, Sumatera Barat Jordi Andika Putra Salim; Yoszi Mingsi Anaperta; Adree Octova
Journals Mining Engineering : Bina Tambang Vol 8, No 2 (2023): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bt.v8i2.123654

Abstract

PT Semen Padang is the oldest company in Indonesia which was founded in 1910. The basic ingredients for making cement are 81% Limestone, 9% Silica, 8.5% Clay, 1% Iron Sand and 0.5% Gypsum. PT Semen Padang conducts Silica and Limestone mining business in Bukit Karang Putih, Indarung, Lubuk Kilangan District, Padang City. In mining at PT Semen Padang there is a conveying activity in which in this activity the transportation of material that has been crushed is transported to storage. There are many types of storage for Padang Cement, starting from Indarung II, III, IV, V and VI. In conveying activities at Semen Padang there are 2 lines, namely the old line and the new line which is called the longbelt. At PT Semen Padang, belt conveyors come in a variety of sizes, and depending on the route taken for delivery, the capacity of each belt for the delivery of raw materials varies. As a result, the minimum production capacity will determine the belt conveyor's production capacity. In the long term of five years, PT Semen Padang intends to expand its output objective to 12,300 tons in 2021. Longbelt delivery lines start from 6A1J03-6A1J04-6A1J05-6A1J06- 6A1J07-6A1J08-6A1J10 to storage indarung VI.

Page 53 of 61 | Total Record : 609

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