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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
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Analisis kestabilan Terowongan SOD level 7 pada tambang bijih emas bawah tanah Di PT. Dempo maju cemerlang pesisir selatan Halid candra; Raimon Kopa
Journals Mining Engineering : Bina Tambang Vol 6, No 1 (2021): 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.v6i1.111692

Abstract

Abstract. PT. Dempo maju Cemerlang is a company operating in the gold mining sector. Gold mining of PT. Dempo maju cemerlang using an underground mining system with the skrinkage method. Mining is carried out by tunneling the main entrance and access to the ore deposits . So that tunnel enlargement activities are carried out to facilitate access to the location and transportation of mining products. So that the tunnel causes a decrease in the safety factor from 3,576 to 1,772 so it is necessary to install a buffer system. The support system must be carefully determined so that its use is optimal , at the SOD level 7 location, the depth of 500- 510 meters has not been used. So that the installation of a buffer will be carried outsplit setaccording to the total collapse load obtained from the tunnel. Analysis needs to be done to determine the condition and rock mass class and to determine the proper installation of supports to the tunnel. The RMR value ranges from 49 - 59, which means the rock mass is categorized into class III rock (f air rock). The support for the split set that must be installed in the tunnel is 3 split sets per meter so that the security factor of the tunnel is stable, meaning it is in accordance with the expected safety factor. Keywords: Tunnel, Safety Factor, RMR-System, Ground Suppor
Analisis Kestabilan Lereng Puncak Jaya di CV. Tekad Jaya Nagari Tanjung Gadang, Kecamatan Lareh Sago Halaban, Kabupaten 50 Kota. Jeremyes A.P; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 6, No 1 (2021): 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.v6i1.111758

Abstract

Abstract. The mining industry is very influential industry in various aspects of life today, such as building offices, housing, and etc. The mining industry has also influenced Indonesia's economic development. CV. Tekad Jaya is a limestone mining company that has not conducted a study on slope stability in the mining area. Because there has not been a study of the stability of the slope, it makes workers who are working in the area around the slope uncomfortable. Therefore, the company wants to conduct a study on the stability analysis of puncak jaya. This study, the RMR (rock mass rating) method was used to measure the rock. For geotechnical parameters, tests were carried out with the results of the physical and mechanical properties of limestone rock with the unit weight value of 9.51 KN/m3 , the saturation weight of 11.80 KN/m3 , and in a dry state the weight value is 6.62 KN/m3 with cohesion (c) = 20.3 KN/m2 and the friction angel (ϕ) = 60.675˚. Analysis of the safety factor (FK) and slope modeling used the Janbu simplified method. The results of the first study the type of landslide that may occur in the mining area is the direct landslide with a potential of 20%. The second results of the Rock Mass Classification based on the RMR Rock Method have good quality and in class II. The third recommendations for safety factor slopes for mining areas that have a height of 80 m with a slope of 76˚ have been changed to a height of 80 m with a slope of 67˚, then the safety factor values for each are in three conditions, is: in the naturale state 1,432, saturated 1,335, and dry 1,546 Keywords: physical and mechanical properties of rocks, rock classification, RQD, slope geometry, slope stability, janbu simplefied
Analisis Proksimate Campuran Batubara Dengan Arang Tempurung Kelapa Terhadap Nilai Parameter Kualitas Batubara mustaqim nashra; fadhilah fadhilah
Journals Mining Engineering : Bina Tambang Vol 6, No 1 (2021): 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.v6i1.111348

Abstract

Abstract. PT. Atoz Nusantara Mining is a company engaged in coal mining, currently coal mining activities are less effective because companies that do so do not utilize low quality coal. Low quality coal accumulates in the stockpile and is not sold because of low quality coal, refining or processing the coal so that it can be utilized. The comparison of coal mixture with coconut shell charcoal is 10gr coal: 2.5gr charcoal, 10gr coal: 5gr charcoal, 10gr coal: 7.5g charcoal, 10gr coal: 10gr charcoal. The research method was carried out by testing the nearest calorific value, sulfur and coal. Based on the results of the research, the effective ratio of coal calorific value is 10gr coal: 10gr charcoal. The initial calorie of coal is 5100 cal / g after mixing, the calorie value of coal is 6061 cal / gr, then the initial sulfur test coal is 1.37% to 0.57%. , 26%, then in the initial test the volatile matter was 8.79% to 17.08%, the initial coal ash value test was 15.57% to 10.7%, and the initial coal calculation of the fixed carbon value was 69.57%. 65.94%. From the results of the study it can be concluded that mixing coal with coconut shell charcoal is very effective in improving the quality of coal, especially in increasing the heating value and volatile matter and is effective in reducing sulfur levels.Keywords: Quality of coal, charcoal, calories, ash, volatile matter
Perbandingan Pengupasan Material Overburden Berdasarkan Data Aktual, Data Ritase dan Data Survey pada Bukit Everest PT. ANTAM TBK. UBPN Sulawesi Tenggara Qhori Dies Hardila; Ansosry Ansosry; Riko Maiyudi
Journals Mining Engineering : Bina Tambang Vol 6, No 2 (2021): 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.v6i2.111704

Abstract

Abstract One of the state-owned companies engaged in nickel mining is PT. ANTAM Tbk. UBPN SULTRA. The nickel mining area is located in Pomalaa District, Kolaka Regency, Southeast Sulawesi. The mining system applied to nickel mining is open pit mining with open pit and open cast methods. Differences in production results from the data recorded by the checker and the survey team. These differences lead to reconciliation where the calculation of annual reserves is not appropriate. The results of the cycle time calculation obtained a production result of 94.000,98 tons, the result of the calculation of the record (truck count) is the amount of transportation equipment ratio of 93.000,9 tons, and the volume of overburden from the survey measurement results on February 3 - March 18, 2020, which is 94735.65 tons. There is a difference in the volume of survey data and the ritase is greater than the survey and cycle time, from the difference in volume there is a smaller ritase volumeKeywords: Nickel, Cycle Time, Transport Equipment Ritase, Survey, and Overburden
Analisis Hubungan Total Resistance dan Kemiringan Jalan Terhadap Konsumsi Bahan Bakar Dump Truck Hino 500 FM 260 JD pada Kegiatan Penambangan Bauksit di PT. Bhakti Karya Mandiri Site Teraju, Kabupaten Sanggau, Provinsi Kalimantan Akbar Wahyu Pratama; Yoszi Mingsi Anaperta
Journals Mining Engineering : Bina Tambang Vol 5, No 5 (2020): 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.v5i5.110275

Abstract

Abstract. PT. Bhakti Karya Mandiri (PT. BKM) is a contractor company engaged in bauxite mining. In mining activities, the company uses mechanical tools, namely the Hino 500 FM 260 JD dump truck and the Kobelco SK 330 excavator. The use of these mechanical devices cannot be separated from the use of fuel. The actual consumption of fuel for transportation vehicles in the field in April 2019 was 14,632 liters / hour, this value exceeds the standard fuel consumption for transportation means of 13 liters / hour. One of the factors that affect fuel consumption is road conditions. In general, the maximum slope of roads that can be traversed properly by means of transportation, both up and down on hills, is 8% or 4.5˚. However, the reality in the field is that there are 14 road segments that exceed the maximum standard. Based on the calculation, the relationship between road slope and total resistance to fuel consumption when the dump truck is loaded is based on multiple regression analysis with the equation Y = 0.32412 + 0.01404 X1 + 0.00001851 X2. While the relationship between road slope and total resistance to fuel consumption when the dump truck is empty is based on multiple regression analysis with the equation Y = 0.089 + 0.00305 X1 + 0.00001983 X2.Keyword: Bauxite, Fuel Consumption, Total Resistance, Road Slope, Multiple Regression Analysis 
Evaluasi Kebutuhan Pompa Multliflow MF-420EXHV Untuk Pengeringan Sump di Pit 7 West PT. Bukit Makmur Mandiri Utama Jobsite Binungan Suaran Tiwi Melisa; Yoszi Mingsi Anaperta; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 6, No 2 (2021): 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.v6i2.111695

Abstract

Abstract. Mining activities carried out by PT. Bukit Makmur Mandiri Utama Jobsite Binungan Suaran uses a combination method of digging and loading (excavator) and transportation equipment (dump truck). The mining system implemented by PT. Bukit Makmur Mandiri Utama Jobsite Binungan Suaran is a surface mining system with the open pit method. The application of the open pit method will cause the formation of large basins so that it is very potential to become a water storage area, both from surface runoff and groundwater. At pit 7 west PT. Bukit Makmur Mandiri Utama Jobsite Binungan Suaran, there is a sump located at an elevation of -101 masl. Directly below the sump is a coal seam. Economically, the layer is feasible to be mined, so that the sump drying is planned, it is necessary to evaluate the pump capacity currently used so that the drying process can run well according to the target time so that the mining process can be carried out immediately. A dewatering system is used to dry the sump. Based on the results of the analysis that has been done, the catchment area in pit 7 WEST is 312.04 ha, with a planned rainfall of 8.46 mm / day and a rain intensity of 1.14 mm / hour. Water discharge Surface runoff by rainwater in the catchment area 7 west is 24769.04 m3 / day, groundwater discharge is 386.12 m3 / day and evapotranspiration discharge is 128.61 m3 / day. So that the total volume of water that enters the 7 west sump pit is 25026 m3 / day. So, the number of Multiflo MF- 420EXHV pumps needed to compensate for the daily discharge in the MTBU-B area is 2 pump units, with a pump working duration of 20 hours / day.Keywords: Open pit, Pit 7 west, Sump, Water Discharge, Pump
PEMETAAN SEBARAN BIJIH BESI BERDASARKAN KUALITAS DENGAN METODE INVERSE DISTANCE WEIGTHED (IDW) DI DAERAH JORONG PULAKEK KOTO BARU KABUPATEN SOLOK SELATAN Irfand Irviandha Rafi; Yoszi Mingsi Anaperta
Journals Mining Engineering : Bina Tambang Vol 6, No 2 (2021): 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.v6i2.111770

Abstract

Abstarct. Indonesia has abundant natural resources, one of which is iron ore. Iron ore is abundant in the islands of Sumatra, Java, Kalimantan, and in several parts of eastern Indonesia. Iron ore is a major mining product in Indonesia, according to the Central Statistics Agency (2016), Indonesia's iron ore production in 2013 was 22,353,337 tons and in 2014 it was 5,951,400 tons. Whether we realize it or not, mining is a very strategic and important sector in supporting Indonesia's economic growth. This research was conducted in the Jorong Pulakek area, Sungai Pagu District, South Solok Regency. The method used in this study was Inverse Distance Weigthed (IDW). In this study, several iron ore exploration activities were carried out including; initial investigation of iron ore (survey and mapping of sampling sites) using GPS with a research area of ± 1300 meters, sampling at several research points ( 10 points) with the characteristics of selecting samples by drilling, then for the distance between sampling points by means of drilling is  10 meters to 15 meters. The spread of iron ore produced by Inverse Distance Wighted estimation using Arcgis shows a filled contour scale which indicates the grade value for each color based on the element, the lowest value is shown in green with a scale value of 8.609-9.89% and the highest value is shown in red. with a scale value of 19.5-21.35%, based on geology the lowest value is shown in green with a scale value of 4.48-5.52% and the highest value is shown in red with a scale value of 12.14-13.1% and based on Oxides the lowest value is shown in green with a scale value of 4.46-5.49% and the highest value is shown in red with a scale value of 12.03-12.98%. The quality of Iron Ore Fe ¬2O3 using XRF tools obtained an average level seen from Element 14.34%, from geology 8.04% and Oxide 7.98%. The results of the mapping of iron ore by quality are of high value and are sustainable.Keywords:.IDW, Bijih Besi, Mapping
OPTIMASI PENCAMPURAN BATUBARA DENGAN MENGGUNAKAN METODE TRIAL AND ERROR UNTUK MEMENUHI STANDAR BATUBARA PLTU SAWAHLUNTO STUDI KASUS PT. CAHAYA BUMI PERDANA Rizki Agusta Yusra; Heri Prabowo
Journals Mining Engineering : Bina Tambang Vol 6, No 1 (2021): 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.v6i1.111688

Abstract

Abstract. Coal is a sedimentary rock formed from homogeneous organic deposits. Coal is spread in layers and each layer has a different quality. Due to the difference in quality at each coal seam, the coal blending process needs to be done to meet market needs. PT. Cahaya Bumi Perdana is a coal mining company located in Sawahlunto City, West Sumatra. PT. Cahaya Bumi Perdana does mining with underground mining method. In underground mining, the BT 04 tunnel and the BT 06 tunnel have different calories because they are located on different seams. The calories in the BT 04 tunnel have high quality fine coal with a calorific value of 6,183 Kcal / Kg and the calories in the BT 06 tunnel have high quality coarse coal with a calorific value of 7,795 Kcal / Kg. Meanwhile, consumer demand is 6,300 Kcal / Kg. Due to the coal calories that are not in accordance with consumer demand, a blending process is required. In this study, the method used for the blending process is trial and error method. In this research, there are 4 parameters used for testing coal quality, namely ash content (AC), volatile matter (VM), total sulfur (TS) and calorie value (CV). This coal quality parameter is determined by consumer demand with a value of ash content (AC) with a maximum value of 14%, volatile matter (VM) with a maximum value of 36.60%, total sulfur (TS) with a value of less than 1%, calorie value (CV ) with a value of 6,300 Kcal / Kg with a tonnage of 2,000 tons. The results of the study are based on laboratory tests conducted by PT. Cahaya Bumi Perdana is the value of ash content (AC) with a maximum value of 13,93%, volatile matter (VM) with a maximum value of 35.202%, total sulfur (TS) with a small value of 0.3965%, calorie value (CV) with a value of 6,577.9 Kcal / Kg with a ratio of high-quality fine coal tonnage 1,510 tons and high-coarse coal tonnage 490 tons or with a ratio of 3:1. There is a slight difference between the calculation using the trial and error method that the author did. The calculation result that passes consumer demand is the calorific value (CV), which 6,577.9 Kcal/Kg through 6,300 Kcal/Kg consumen demand. For this difference in calorific value, will be returned to the agreement between the company and the consumer.Keywords: Coal, trial and error, coal quality
Optimalisasi Produksi Alat Gali Muat dan Alat Angkut pada Pengupasan Overburden dengan Menggunakan Metode Antrian dan Kapasitas Produksi di Pit 3 PT. Jambi Prima Coal, Kecamatan Mandiangin, Kabupaten Sarolangun, Provinsi Jambi Yuyun Frediana; Ansosry Ansosry
Journals Mining Engineering : Bina Tambang Vol 6, No 2 (2021): 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.v6i2.111710

Abstract

Abstract. PT. Jambi Prima Coal is a coal mining company located in Pemusiran Village, Mandiangin District, Sarolangun City, Jambi Province. In the process of production overburden in pit 3, the company uses 1 excavator and 5 dump trucks. In July 2019 overburden production was not achieved. PT. Jambi Prima Coal targets overburden production of 50,000 Bcm / month. However, the actual production of overburden only reached 86.52% of the total production target. This is due to the mismatch of the loading and transportation equipment and the low working efficiency of the mechanical equipment. This study uses the queuing method and production capacity which aims to get the match factor of the loading and transportation equipment in order to achieve the specified target. Based on the results of calculations using the queuing method, it was found that work efficiency increased from 69.5% to 91% resulting in overburden production of 61,669.29 Bcm / month where there was an increase in production by 36.82% and using queuing simulation, the performance of the equipment was matched. MF = 1.01 where the transportation means have experienced no waiting time. By using the production capacity method, the optimal dump truck settings are obtained from 5 units to 4 units.Keywords: Production, Work Efficiency, Overburden, Queue, Production Capacity, Excavator, Dump truckAbstract. PT. Jambi Prima Coal is a coal mining company located in Pemusiran Village, Mandiangin District, Sarolangun City, Jambi Province. In the process of production overburden in pit 3, the company uses 1 excavator and 5 dump trucks. In July 2019 overburden production was not achieved. PT. Jambi Prima Coal targets overburden production of 50,000 Bcm / month. However, the actual production of overburden only reached 86.52% of the total production target. This is due to the mismatch of the loading and transportation equipment and the low working efficiency of the mechanical equipment. This study uses the queuing method and production capacity which aims to get the match factor of the loading and transportation equipment in order to achieve the specified target. Based on the results of calculations using the queuing method, it was found that work efficiency increased from 69.5% to 91% resulting in overburden production of 61,669.29 Bcm / month where there was an increase in production by 36.82% and using queuing simulation, the performance of the equipment was matched. MF = 1.01 where the transportation means have experienced no waiting time. By using the production capacity method, the optimal dump truck settings are obtained from 5 units to 4 units. Keywords: Production, Work Efficiency, Overburden, Queue, Production Capacity, Excavator, Dump truck
Analisis Orientasi Kekar terhadap Fragmentasi Batuan Hasil Peledakan di PT. Semen Padang Muhammad Aditya Faisal; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 6, No 1 (2021): 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.v6i1.111201

Abstract

PT Semen Padang is a State-Owned Enterprise (SOE) engaged in the production of limestone located in Padang, West Sumatra. The mining system implemented at PT Semen Padang is an open pit system using quarry method. Mining activities begin with the process of drilling, blasting, loading and hauling, crushing and conveying. The size of the blasting rocks required by the company is < 80 cm. After analysis of blasting data using RL theory. Ash and The modern technique of rock blasting then obtained the geometry of the RL. Ash with Burden 4.7 m and , Spacing 5.9 m, Hole depth 11.4 m, subdrilling 1.4 m, stemming 3.3 m, and fill column length 8.1 m. Geometry proposed by the method Of Modern Technique of Rock Blasting namely Burden 5 m, Spacing 6.25 m, Hole depth 11.12 m, subdrilling 1.6 m, stemming 5 m, and fill column length 12.2 With a diameter of 5 inches. This study seeks to reduce weighting from one of the parameters in the weighting Blastibility Index Parameters, namely Joint Plane Orientation. There are two parameters in the Joint Plane Orientation, namely the general direction of stocky and the direction of freeface. The general direction of the stocky is a parameter that can not be controlled by humans, but the direction of freeface is a parameter that can be controlled so that if the direction of freeface is changed then the condition of the Joint Plane Orientation changes. The results of the analysis obtained for the application of freeface direction N202oE or N22oE produces material size < 80cm as much as 92.26% and for the direction of freeface N292oE produces material with size < 80 cm as much as 95.63%.

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