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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
 34   35   36   37   38 
Analisis Investasi Kebutuhan Alat Muat (excavator) dan Alat Angkut (dumptruck) pada Penambangan Batu Kapur untuk Memenuhi Target Produksi 900.000 ton/bulan di Quarry PT. Semen Padang Fachri Arif; 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.v6i2.111700

Abstract

Abstract. The process of loading and transporting limestone at PT. Semen Padang from the mining front towards crusher using a combination of mining equipment Excavator Caterpillar 6030 BH and Dump Truck Komatshu 785. Based on company data, target productions of limestone estimate 900.000 ton/month. In reality in fact of first three month of 2018 were 2.2 million ton, in January were 768.321 ton, February were 748.252 ton, and in March were 759.636 ton. This study chosees whether to buy or rent an equipment that is more effectively used in limestone mining by using ecomomic analysis Present Worth Cost (PWC) and Future Worth Cost (FWC) in terms of the smallest costs used. Differences in costs incurred between the cost of buying and renting equipment after doing calculations with analysis Present Worth Cost (PWC) and Future Worth Cost (FWC) for one loading unit Excavator Cat 6030, PWC= Rp. 47.931.918.250 and FWC= Rp. 57.172.394.270, while for two units of transportation Komatsu HD 785, PWC= Rp. 16.785.906.482 and FWC= Rp. 1.157.760.340. The results of calculations using analysis Present Worth Cost (PWC) and Future Worth Cost (FWC) then the alternative that will be chosen is to rent an equipment, due the purchase cost is bigger than the rental fee. In this case only considering the investment side. Keywords: Production, Investment, Excavator, Dump Truck, PWC, FWC
Kajian Teknis Geometri Jalan Angkut dan Pengaruhnya Terhadap Produksi Alat Angkut pada Penambangan Batu Andesit di PT. Ansar Terang Crushindo 1Kecamatan Pangkalan Koto Baru, Sumatera Barat. Mutia Zara; Heri Prabowo
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.v5i5.110157

Abstract

Abstract: PT. Ansar Terang Crushindo is andesite mining company located in Kecamatan Pangkalan Koto Baru, Kabupaten  Lima Puluh Kota. The monthly target production PT. Ansar Terang Crushsindo is 20,000 tons / month, while the actual production in November was 15,608.8 tons / month. One of the factors that affect the non-achievement of production targets is the condition of the haul road. Based on observations in the field, there grades above 8%, the width of the haul roads has not met the standards so that when one passes, one of the conveyances must stop and there is no cross slope and safety berm. Based on the measurement of haul road geometry, it is found that the actual road width ranges from 3.68 to 6.2 meters, while theoretically the straight road width is 9 meters. The actual curved road width ranges from 3.54 to 6.4 meters, while the theoretical curved road width is 12.2 meters. actual road grade is from 3.54% to 11.68%. Meanwhile, ideal road grade is 8%. The cross slope value for a road width of 9 meters is 0.04 and a height difference of 17.1 cm. the superelevation value for the bend width of 12.2 meters is 0.04 and the height difference is 48 cm. After being evaluated, there are 5 straight road segments are necessary to add width and 4 segment of road bends, and lower grade in 4 segments. Mitsubishi Fuso 250 PS production in actual conditions was 15,367.62 tons / month. The estimated production of the Mitsubishi Fuso 250 PS after evaluation is 16,504.43 tons / month. The theoretical production of the Mitsubishi Fuso 250 PS after improving work efficiency and ideal road geometry is 20,713.76 tons / month.Keywords : Road Geometry, Production, Work Efficency, Dump Truck, Cycletime.
Kajian Pengaruh Kemiringan Jalan Angkut Terhadap Konsumsi Penggunaan Bahan Bakar Truck Pada Produksi Batubara Di Pit Barat Pt.Aic Jaya Kec.Talawi Sawahlunto Sumatera Barat Rian Saputra; Dedi Yulhendra
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.v6i2.111802

Abstract

Abstract. Sawahlunto City is one of the areas that has very potential coal resources in West Sumatra and is very interesting to work on. PT. Allied Indo Coal Jaya is a company engaged in coal mining located in Parambah, Talawi District, Sawahlunto City, West Sumatra. PT.Allied Indo Coal Jaya carries out coal mining with underground and open pit mining systems. Coal mining with an open pit system includes land clearing, stripping of topsoil, removing topsoil for disposal, loading and transporting coal to stockpiles. . In the topsoil and coal acreage activities requiring mechanical devices, one of the mechanical devices used is the Hino FM 260 JD dump truck and the Caterpillar 320 D excavator. The use of transportation equipment as the main equipment in mining operations cannot run without fuel. High fuel prices can affect mining operating costs. Factors that influence the increase in fuel consumption are the slope, the distance traveled and the load. PT AIC is successful in planning the slope of the haul road with a grade of 9%, it turns out that in the field there are many haul road slopes obtained by researchers of more than 10%. Incorrect road slopes can affect fuel consumption, cycle time and conveyance productivity so that it can affect production.Keywords: Sawahlunto, Fuel Consumption, Coal Mining, Slope.
Evaluasi Sistem Penyaliran Tambang Untuk Mendapatkan Sistem Penyaliran Ideal Tahun 2020 di Pit 1 Utara Bangko Barat, Jobsite TJMO, PT. Satria Bahana Sarana, Tanjung Enim, Sumatera Selatan Ichsandhiyoni Ichsandhiyoni; Murad Murad
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.v6i1.111716

Abstract

Abstract. PT. Satria Bahana Sarana is a contractor company engaged in coal mining services located in Bangko Barat, Muara Enim district, South Sumatra province. PT Satria Bahana Sarana carries out the mining process using the open pit method. This method will cause the formation of a large basin so that it is very potential to become a water storage area. Based on field observations, there are many puddles of water around the mining front and haul roads, which can disrupt the mining process. Based on the analysis of rainfall data for 2010-2019, the planned rainfall was 482.82 mm/ day, with a return period of 2 years of rain. The method of solving the problem is done by analyzing several alternative solutions to problems related to handling the flow of water entering the pit, namely alternative I, a diversion channel that can minimize runoff discharge by 7,669 m3 / second. Alternative II for pump optimization of 6 units to compensate for the existing sump dimensions. Alternative III optimal sump dimensions to accommodate the total water discharge with a maximum volume 16,290 m3 . Based on the analysis of the three alternatives, an effective and efficient alternative I, with the estimated cost of Rp. 54,352,224.00.Keywords: Sistem Penyaliran Tambang, Catchment Area, Pompa, Sump, dan Saluran Terbuka
EVALUASI WAKTU KERJA EFEKTIF ALAT GALI MUAT EXCAVATOR HITACHI ZX-350 H DAN KOMATSU PC 200 DALAM RANGKA MENCAPAI TARGET 80.000 TON PADA PENAMBANGAN BATU ANDESIT DI PT. KOTO ALAM SEJAHTERA KABUPATEN 50 KOTA, PROVINSI SUMATERA BARAT Rahmahtul Fadlillah; Adree Octova
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.v6i1.111765

Abstract

Abstract. In andesite mining, PT. Koto Alam Sejahtera uses a series of work, namely using a digging and loading equipment to move material from the loading point to the dump hopper. Based on the results of field observations, the authors found that the actual data obtained were not in accordance with the target set by the company that the production target was not achieved due to several factors, including due to lost time and delay of the digging equipment, planned and not achieved production targets. As it should be, productive work time is not optimal. There are still frequent inconsistencies in work between the digging and loading equipment, where the digging tool often waits. This is due to the low actualization of working time against the productive time of the loading and transportation means, which causes a decrease in the efficiency of the work of the tools caused by various kinds of obstacles in the field that can actually be avoided.Keywords: excavator, Production, Effective Working Hours, Evaluation
KAJIAN TEKNIS KEMAJUAN LUBANG BUKAAN YANG OPTIMAL PADA PENAMBANGAN BIJIH EMAS DI PT. DEMPO MAJU CEMERLANG KENAGARIAN TAMBANG KECAMATAN IV JURAI KABUPATEN PESISIR SELATAN PROVINSI SUMATERA BARAT RIRIN HANRIESTA BR MATONDANG; Raimon Kopa; Admizal Nazki
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.v6i1.111347

Abstract

Absract. PT. Dempo Maju Cemerlang is a company focused in the gold mining industry in Indonesia. PT. Dempo Maju Cemerlang uses an underground mining system using the shrinkage method. Underground mining activities at PT. DMC is divided into two activities, namely production and development. Blasting activities play an important role in the mining cycle to unload ore or waste so that it can be taken out of the mining area. This study aims to produce openings as planned by the company with a better progress value. The success of a blasting can be judged by the results obtained. Blasting results at PT. DMC has not yet reached the progress target set by the company, namely 1.5 m / blasting. The average progress of each detonation is 1,216 m, the average actual blasting size is 20 cm, the actual blasting volume averages 4.0699 kg / m3 with an average powder factor value of 1.889 kg / ton, and the amount of explosives which is used for 22 blast holes, namely 20 kg. After designing and testing the recommended blasting geometry, the average progression value is 1.51 m, the resulting fragmentation is also better with an average size of 50 cm, an average volume of 5.0637kg / m3, an average PF value of 1.137 kg / ton, and the amount of explosives used for 22 blast holes is 15 kg. So after testing with the design geometry, an increase in the progress of the blasting hole was obtained by 0.294 m for one blasting, the volume also increased by approximately 0.9938 kg / m3, the PF value of the blasting result was smaller which meant that the fragmentation of the blasting result was more. good and there was a savings in the use of 5 kg of explosives for one front blasting.Keywords: Mine Progress, Blasting, Underground Mining, Blasting Results.
EVALUASI SISTEM PENYANGGAAN PADA TUNNEL 4 BERDASARKAN METODE RMR-SYSTEM DI PT. AICJ, SAWAHLUNTO Alvi Zichri; Raimon Kopa
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.v6i2.111706

Abstract

Abstract. Excavation of underground rock masses results in changes in the balance of rock conditions such as rock collapse and changes in tunnel dimensions due to shifting of stress distribution. Good geotechnical analysis is desirable to provide proper treatment of the excavated rock.This research was conducted to determine rock mass class, rock mass classification using the RMR method, determine the strength of the rock in tunnel 4 of PT AICJ Sawahlunto, obtain Stand Up Time and span buffer values as references for installing mine pit buffers, obtain appropriate support system recommendations based on the results grounsuppport RMR (Bieniawski 1989) on tunnel 4, Obtaining the condition of the wooden supports used in tunnel 4 of PT AICJ at this time.From the measurement of several parameters of the RMR method, it is obtained that tunnel 4 for coal is in class III (fair rock) with a coal RMR value of 53, and silstone is in class II (good rock) with a value of 61. Based on the stress value received on the cap and side post, namely 502.85 Kg/cm2 and 74.898 Kg/cm2 with the value of the wood clearance stress of 623.75 Kg/cm2 . So that the FK value on the cap and side post tunnel 4 are 1.24 and 8,32. So the tunnel cap 4 is recommended to use wooden supports with a diameter from 20 cm to 21 cm so that the FK value has increased to 1,60 and is declared safe (> 1.5).Keywords: Underground, Rock Mass Ratting, Stress, Safety Factor, Wooden Support.
Kajian Implementasi Sistem Manajemen Keselamatan Pertambangan Dalam Rangka Meningkatkan Performa Keselamatan dan Kesehatan Kerja Tambang Bijih Emas Bawah Tanah di PT. Dempo Maju Cemerlang, Kabupaten Pesisir Selatan, Provinsi Sumatera Barat Jumarinda Jumarinda; Fadhilah Fadhilah
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.v5i5.110351

Abstract

Abstract. PT. Dempo Maju Cemerlang is one of the gold mining companies that implement an underground mining system. The mining safety management program has not been fully implemented. This research aims to find out the percentage of application of Mining Safety Management System, accident statistics of work frequency rate and severity rate, as well as potential hazards in some areas of work that can cause accidents as well as reveal hazard control in the form of Job Safety Analysis (JSA). Data collection techniques use questionnaires, interviews, and observations of work activities. The results of the questionnaire analysis of the overall implementation level of the mining safety management system at PT. Dempo Maju Cemerlang based on the calculation of the Likert scale is 80.9%. With 84.2% policy element criteria, 81.3% planning element, 83.7% organizational and personnel elements, 81.1% implementation element, 80% evaluation and follow-up element, 75.6% documentation element, and 75.3% management review element. The frequency rate of accidents in 2019 was 44.18 with a severity rate of 166.55. JSA generated to identify workplace hazards in the main hole of SOD (South Ore Drift) in the work of the leg jack drill engine and the operation of diesel locomotives.Keywords:  Gold Mine, Mining Safety Management System, Accident Statistics, Potential Hazards, Job Safety Analysis
SISTEM PENYALIRAN TAMBANG UNTUK MENGATASI GENANGAN AIR LIMPASAN DI FRONT PENAMBANGAN BLOK TIMUR PT. PRIMA DELIN AGRO PERMAI KABUPATEN SAROLANGUN PROVINSI JAMBI Yelli Fitri; Murad Murad
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.v6i2.111696

Abstract

Abstract. The mining system of PT. Prima Delin Agro Permai applies an open pit system. The open mining system it is really affected by the weather, of the reasons is when it’s raining. Mining that applies an open pit system required to have a good pit drainage plan to prevent the puddle on the mining front so it can be interfere with the mining process. The purpose of this research to analyze the pump needs, and design the dimension of sump and the open channels. The recommendations they are 1 recommendation. Recommended to add 1 unit pump become 6 units pumps by fixing one unit that has broken. Recommendation number 2, the diversion channel that can minimized the runoff with the slop on the bottom channel (S) = 0, 30%, width of the channel (b) = 0, 5 m, the height of the channel (H) = 0,625 m and the cross sectional area (A) =0,375 m². The third (III) recommendation, the dimension of sump which the optimal one to accommodate the total water discharge, with a maximum volume on 21, 512 m³, the plan based on the needs to get the dimension of the sump with the length of the surface of the wells and the width of the surface of 69 m. The length of the bottom and the width of the bottom of the well is 62 m with a depth of 5 m.Keywords: Mine drain system, Mining front, Pumps, Open channels, Sump
OPTIMASI PENCAMPURAN ASPAL BUTON DENGAN METODE SIMPLEK UNTUK MEMENUHI KRITERIA PERMINTAAN KONSUMEN DI PT. WIJAYA KARYA BITUMEN SITE KABUNGKA PULAU BUTON PROVINSI SULAWESI TENGGARA Afrizal Wildan; 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.v6i1.111780

Abstract

Abstract. In meeting the criteria for consumer demand, PT. Wijaya Karya Bitumen strives to produce products according to consumer desires. Currently, the demand for specific natural asphalt content, namely 21% asphalt content and maximum water content of 2% with a total of 5000 tons makes it difficult for companies to meet these consumer criteria, therefore a mixing formula is needed for natural asphalt with different types of quality to meet consumer demand. The method used to obtain the mixing result was the simplex method with two variables, then the natural asphalt used for mixing was 19% bitumen content and 1.8% moisture content with 24% bitumen content and 2% moisture content. After calculating the results of the calculation of the results of mixing natural asphalt with a mixing ratio of 3: 2, the results of these calculations can be used for mixing natural asphalt following the criteria of consumer demand at PT. Bitumen Wijaya Karya. Keywords: Mixing, Simplek Method, Natural Asphalt, Bitumen, Water.

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