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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 14 Documents
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Search results for , issue "Vol 9, No 1 (2024): Journals Mining Engineering: Bina Tambang" : 14 Documents clear
Calculation of Coal Resources Using the Circular Method at PT Manggala Alam Lestari Bayung Lencir Rolitu Rolitu
Journals Mining Engineering : Bina Tambang Vol 9, No 1 (2024): 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.v9i1.127673

Abstract

PT. Manggala Alam Lestari (PT. MAL) is a private national company that operates in the coal mining industry. PT.Manggala alam Lestary is located in Musi Banyuasin, Bayung Lencir district. As a coal-mining company, you must meet coal requirements to conduct resource calculations at the exploration stage before moving on to the mining preparation stage. The territory of IUP PT Manggala Alam Lestari is divided into V (five) mining blocks. However, Block IV, with an area of 150 hectares is currently not being calculated for coal resources, overburden, and stripping ratio since drilling activities are taking place on Block IV to sample coal thickness, overburden, and stripping ratio. The measured resource calculation for this coal is performed using the Circular method of block IV with a 100-meter radius, with data such as geological conditions on the ground and drilling data, and then the data is applied with supporting programs such as Software Surpac 6.6.2. Based on the data processing results, 1.579.428,13 tons of coal were measured using the circular method, as well as 1.067.573,57 m3 of overburden, or 1.708.117,71 tons.
Analysis of the Effect of Production on Investment in Digging - Loading and Transport Equipment PT. Y in Block 8 of PT X Limestone Mining, South Sulawesi Province Muhammad Fikra Irwan; Tri Gamela Saldy
Journals Mining Engineering : Bina Tambang Vol 9, No 1 (2024): 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.v9i1.127794

Abstract

In cement production, raw materials are needed which consist of primary raw materials, namely limestone with a percentage of 85%, and clay with a percentage of 13%, apart from that, secondary raw materials are also needed as correction materials which come from tuff, silica and gypsum with a total percentage. namely 2%. The large demand for limestone requires PT X to carry out its own mining with the assistance of contractors. One of the contractors carrying out this mining is PT Y in block 8. Mining carried out by PT Y in block eight has a target of 74,000 tons in October. From observations in the field, there was an obstacle, namely the incompatibility of equipment which affected production achievements in October. From the analysis that has been carried out, a match factor of 1.275 was obtained so that the means of transport were reduced from 6 means of transport to 5 means of transport. From productivity calculations, the results obtained are that if you use 1 digging tool and 6 transport tools, the production that can be done in one day is 2,823.08 tons, whereas if you use 5 transport tools, the production that can be produced in one day is 2,900.704 tons. The total cost of ownership and operational costs if using 1 digging and loading equipment and 6 transportation equipment per year is IDR 4,580,431,703.68. Meanwhile, if you use 1 digging and loading equipment and 5 transportation equipment, the total annual ownership and operational costs that must be incurred are IDR 4,246,980,096.24. Using 1 dig-loading tool and 5 transport tools is much more profitable than using 1 dig-loading tool and 6 transport tools.
Work Compatibility of Excavator Komatsu PC400 with Hino 500 FM 320 TI Transport Equipment in Coal Mining Activities in North Pit Muara Tiga Besar 1 PT Bukit Asam, Tbk.Tanjung Enim, South Sumatra. Muhammad Fajar Ramadhan
Journals Mining Engineering : Bina Tambang Vol 9, No 1 (2024): 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.v9i1.127678

Abstract

PT Bukit Asam (Persero) Tbk is a State-Owned Enterprise (SOE) established on March 2, 1981 located in Tanjung Enim, South Sumatra. The purpose of production activities is to produce minerals that have a price or selling value, in coal production activities there are two productions that can be done, namely coal production and overburden production. PT Bukit Asam Tbk. applies the open pit mining method. In coal getting activities, PT Bukit Asam Tbk. uses Komatsu PC400 excavating equipment and DT HINO 500 transportation equipment, while in overburden excavation activities PT Bukit Asam Tbk. uses Komatsu PC2000 excavating equipment and Komatsu HD785 transportation equipment. Apart from loading and hauling excavation equipment as the main mining equipment, there are also supporting equipment such as motor graders, bulldozers, water tanks and fuel tanks to get optimal and maximum results from production. In coal mining activities in the Muara Tiga Besar Mining area, PT Bukit Asam Tbk. company uses Komatsu PC 400 for coal getting and Komatsu PC2000 for overburden activities, while for transportation equipment in the form of Dump Trcuk HINO 500 FM 320 TI for coal getting and HD 785 for overburden activities. The results of observations in the field obtained the productivity value of the PC400 digging tool for coal getting is 257.73 tons / hour, while for DT HINO 500 FM 320 TI for coal getting is 72.46 tons / hour.
Slope Stability Analysis Using Spencer Method in Pit 1 Area of Limestone Mining PT Sumbar Calsium Pratama, Nagari Halaban, Lareh Sago Halaban, Lima Puluh Kota, West Sumatera Muhammad Irfan
Journals Mining Engineering : Bina Tambang Vol 9, No 1 (2024): 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.v9i1.127691

Abstract

PT Sumbar Calcium Pratama as one of the mining companies that produces calcium material for core and shell separators for the palm oil mill industry, participates by increasing production to meet consumer needs. PT Sumbar Calcium Pratama is one of the mining companies engaged in the mining of class C excavation material (limestone) whose mining operations are carried out by means of Quarry. The results of taking slope geometry data at PT Sumbar Calsium Pratama obtained a slope height of 30 m with a slope angle of 83 °. The Spencer Slice Method was developed by Spencer in 1967. It is one of the most theoretically rigorous wedge methods because it fulfills the balance of forces and moments of the collapsing mass. Thus, it allows for a more precise calculation of the Factor of Safety (FS). The results of the Rock Mass Rating (RMR) analysis of the rock show that the Rock Quality Designation (RQD) of the rock mass of the slope in the pit 1 mining area of PT Sumbar Calsium Pratama has a slope of 2.58%, and the weight of the Rock Mass Rating (RMR) of the slope belongs to class III (medium). Kinematic analysis then obtained the potential for landslides that will occur in the research area in the form of plane avalanches (Planar Failure) of 10%, wedge avalanches (Wedge Failure) of 9.47%, avalanches (Flexural toppling) of 45%. Recommendations in an effort to increase the stability of the research slope of PT Sumbar Calsium Pratama which is in a saturated state is not stable / safe, first by changing the slope geometry in the form of slope height which was originally 30 meters to 24 m or 23 m then obtained FK values of 1.33 and 1.37 (safe / stable). Second, by reducing the slope from 83° to 65° and 64°, FK values of 1.3 and 1.38 (safe/stable) were obtained.
Slope Stability Analysis for Mine Slope Design Optimization Planning at Pit Middle of PT Banjarsari Pribumi Open Pit Mine, Merapi Timur, Lahat, South Sumatera Dendi Fermon Dika; Yoszi Mingsi Anaperta
Journals Mining Engineering : Bina Tambang Vol 9, No 1 (2024): 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.v9i1.127692

Abstract

PT Banjarsari Pribumi is a subsidiary of PT Titan Infra Energy (Titan Group) which is engaged in coal mining. The company is located in Merapi Timur, Lahat, South Sumatera. PT Banjarsari Pribumi conducts mining using the Open Pit Mining method. To determine the safety factor using the morgenstren-price method. The results of the slope stability analysis for Section A-A' obtained a saturated FK of 1.092, saturated FK Section B-B' of 1.041 saturated FK Section C-C' of 1.148. From the analysis results obtained, it is explained that the slope is in critical condition. For this reason, the authors conducted a slope dewatering simulation and a resloping + dewatering simulation on the Lowwall Pit Slope. The results of the 2 m dewatering simulation for section A-A' obtained an FK value of 1.454, for dewatering 10 m section B-B' FK value of 1.301 and for dewatering 5 m C-C' FK value of 1.301. The resloping simulation results for section A-A' obtained an FK value of 1.319. The resloping + dewatering simulation results for section B-B' obtained an FK value of 1.345 and for section C-C' of 1.369.
Analysis Match Factor Loader and Hauler for Activities Overburden Removal Using the Queue Method at PT. Andalan Artha Primanusa Jobsite PT. Budi Gema Gempita, South Sumatera Province Rahmad Fikri; Mulya Gusman
Journals Mining Engineering : Bina Tambang Vol 9, No 1 (2024): 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.v9i1.127642

Abstract

Abstract.  PT. Andalan Artha Primanusa (AAP) is a company engaged in coal production. In November 2022 PT. AAP set an overburden (OB) production target of 817.343 bcm/month, with actual achievement of 453.000 bcm/month or around 55,4% of the planned production target. Based on observations in the field, one of the factors that can hamper production is fleet mismatch (digging equipment waiting for loading) and the unit circulating time is quite high, the XCMG ADT's circulation time is 13.5 minutes, which causing the work of the tool to be less than optimal, as well as other aspects such as unfavorable hauling road conditions so that the operator has to reduce speed which is one of the causes of the high circulation time. The purpose of this research is to analyze the actual unit production, to analyze the value of fleet match factor and to analyze production achievement in overburden removal activities using queuing theory. Based on the results of queuing theory analysis, the number of ADT needed is in accordance with the level of excavator service, namely 7 units of ADT for each fleet and the overburden production is achieved, namely 322.513,6 bcm/month or 39,4% of the target set. Because after setting the queuing theory the production target had not been achieved, the researchers optimized production by using cycle time and the best work efficiency value of the unit, as well as adding 2 units of ADT for each fleet, so that the production of conveyance became 955.839,6 bcm/month or around 116,94% of the target that has been set.Keywords: Match Factor, Overburden, Production, Queuing Theory
Assessment of Productivity and Compatibility of Komatsu PC 2000 Loader and Komatsu HD 785 Transport Equiptment in Overburden Stripping Activities in the North Pit of Muara Tiga Besar Mining Area at PT. Bukit Asam, Tbk. Tanjung Enim, South Sumatra Putra Alfarizi; Heri Prabowo
Journals Mining Engineering : Bina Tambang Vol 9, No 1 (2024): 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.v9i1.127770

Abstract

PT. Bukit Asam, Tbk is a coal mining company with an IUP area of 14,987 Ha (PT Bukit Asam, Tbk, 2018), the mining location is located in Tanjung enim, Lawang Kidul sub-district, Muara Enim Regency, South Sumatra Province which is divided into 3 Mining Business License Areas namely: Air Laya Mine (TAL), West Bangko Mine and Muara Tiga Besar Mine. Coal mining in Muara Tiga Besar Mining area of PT Bukit Asam company. Using Komatsu PC 400 for coal getting activities, while for overburden uses Komatsu PC 2000, PC 1250 and PC 800. For transportation equipment in the form of Dump Truck HINO 500 FM 320 TI for coal getting activities and HD 785 for overburden.  The productivity value of the PC2000 digging tool for overburden is 750.02 bcm / hour, while for HD for overburden is 96.866 bcm / hour. For the MF (match factor) value on the PC 2000 with HD 785 for overburden is 0.89, meaning that there is a mismatch between the PC 2000 and HD 785 because the MF value < 1 so that there is waiting time for the PC 2000 digging tool for the HD 785 conveyance.
Calculation of Runoff Discharge in the Coal Mining Open Pit Mine Conveyance System at PT. Kalimantan Prima Persada Jobsite PELH Kebur Village, West Merapi District, Lahat Regency, South Sumatra Province Fajar Rofiescha; Rusli HAR; Heri Prabowo
Journals Mining Engineering : Bina Tambang Vol 9, No 1 (2024): 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.v9i1.127562

Abstract

PT. Kalimantan Prima Persada Jobsite PELH is a company operating in the field of coal mining contractors. Mining carried out by PT. Kalimantan Prima Persada Jobsite PELH uses the open pit mining method, during the rainy season, the problem that is often found is water. Water that comes from above the ground surface (runoff water) and water that is below the ground surface (ground water). Runoff water and ground water are the main things that must be considered so that they do not disturb and damage the mining location. Therefore, this report was written to find out how much runoff water enters the mining front area. The stages used in calculating runoff water discharge are calculating the catchment area area, calculating planned rainfall data using the Log Pearson III method, calculating rain intensity using the Monnonobe method, calculating runoff water discharge using the rational method. Based on calculations, the catchment area in Pit PE PT was obtained. Kalimantan Prima Persada Jobsite PELH is 540,18 Ha or 5,40 km2, the average daily maximum rainfall in the last 10 years is 547.4 mm/day, planned rainfall is 385,140 mm/day, rain intensity is 80,87 mm/day, and the runoff discharge is 30.204,27 m3/hour. 
Analysis of Slope Stability in the Coal Mining Area of KUD Sinamar Sakato, Jorong Sinamar, Nagari Sinamar, Asam Jujuhan, Dharmasraya, West Sumatera Dimas Agung Hermawan.HL; Yoszi Mingsi Anaperta; Heri Prabowo; Sultan Muhammad Taufik
Journals Mining Engineering : Bina Tambang Vol 9, No 1 (2024): 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.v9i1.127725

Abstract

KUD Sinamar Sakato conducts mining with open pit mining method, an open pit mining will always face the problem of slope stability, if the slope formed from the excavation is not considered properly, it can lead to potential landslides. Based on observation data, KUD Sinamar Sakato has a slope with a height of 78 metres and an angle of 78o, KUD Sinamar Sakato also does not have information about the physical and mechanical properties of the slope of the Mining Pit, making it difficult for companies to conduct geotechnical studies. Based on the analysis of safety factors using slide v 6.0 software using the Morgenstern-Price method, the slopes of KUD Sinamar Sakato are unsafe in saturated conditions which have FK of 1.095, so it is necessary to make improvements to the slope geometry, the improvements made are reducing the slope of the slope to 73o and the resulting saturated FK is 1.360, the slope is in a safe condition, then the second recommendation is to add a bench without changing the angle, where the bench is added at a height of 35 metres with a bench width of 4 metres, the saturated FK is 1.361, where the slope is in a safe condition.
Geometry Analysis of Prabumulih Mine Main Road at PT. Kalimantan Prima Persada Jobsite Pelh, West Merapi District, Lahat Regency, South Sumatera Fariq Dwi Satria Diansa; Mulya Gusman
Journals Mining Engineering : Bina Tambang Vol 9, No 1 (2024): 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.v9i1.127746

Abstract

Coal is a resource consumed by the world as the main ingredient in power generation and the staple material for steel and cement production. Within the Priyamanaya Energi Pit (PELH), which is a mining site, PT Kalimantan Prima Persada, which is a contractor, is involved in the process of coal mining.Within the Priyamanaya Energi Pit (PELH), which is a mining site, PT Kalimantan Prima Persada, which is a contractor, is involved in the process of coal mining. Coal extraction is being carried out at the Priyamanaya Energi Pit (PELH), which is a mining facility owned and operated by PT Kalimantan Prima Persada, a contractor. An alternate path that goes through this ravine is now available for usage by the Prabumulih Road, which was once used by a significant amount of traffic. According to observations made in the field, certain sections of road do not have the optimal road shape. Starting from the Cross Slope, several sectors are not suitable, whose ideal value is 2-5%, but the actual conditions are only around 1.5 2%, there is no water rope, the road width is not ideal where it has a width of less than 25 meters with an ideal value of 25 meters, and there is no Separator (Median), there is Superelevation with an ideal value of 4% but in actual conditions only around 1.4%. However, some parameters are by the actual, such as grade and safety berm. As a result, the road geometry is not ideal, causing the road conditions to be bad, resulting in the conveyance speed not being achieved.

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