Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

All

Journals Mining Engineering : Bina Tambang

mining
Website

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

19 20 21 22 23

Characteristic Analysis of Coal Oil Mixture as Alternative Diesel Fuel from Low Rank Coal at PT.Nusa Alam Lestari Site Sinamar Dharmasraya Sumatera Barat Deni Syahputra; Rijal Abdullah; Yunasril Yunasril
Journals Mining Engineering : Bina Tambang Vol 3, No 1 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Coal oil mixture (COM) is one of the methods of making liquid coal fuel in addition to liquefaction and coal water fuel. Coal oil mixture (COM) is a mixed fuel with a balanced composition between coal, petroleum, and additives (Maeda, 1991: 66).In this study, the coal used is low rank coal mixed with additives and diesel. The ratio of coal: diesel: the additives used are 25%: 75%: 0% (COM A1), 25%: 74%: 1%, (COM A2) and 25%: 73%: 2% (COM A3).The results showed that the viscosity characteristics tested on COM A1, A2, A3 were closer to MDO than HFO as standard ISO 8217 2010 MDO (Marine Diesel Oil) viscosity with maximum limit of 11 cSt at 400c temperature. The calorific value of COM A1, A2, A3 is lower than MDO due to the utilization of low calorie coal in the mixture.

Kajian Teknis Rancangan Area Final Dump Palapa di Pit Pinang South, Departemen Jupiter, PT. Kaltim Prima Coal Fadhilah Alkholik; Murad Murad
Journals Mining Engineering : Bina Tambang Vol 4, No 1 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

One of the mining activities at PT. Kaltim Prima Coal is overburden materials dumping activities in an area until attain a final condition (final dump). Final dump areas must have a drainage system design to regulate runoff water in the area so it does not enter the front and disrupting mining activities. In October 2018, at the Pinang South Department of Jupiter Pit PT. Kaltim Prima Coal will be opened the Palapa dumping area with an area of 101,29 ha from the elevation of 40-160 mdpl and is expected to be final in the end of 2020. The maximum daily rainfall value from 5-years rainfall data (2013-2017) for the return period 25 years is 112,917 mm/day. In the final disposal area, Palapa was made into 3 open trapezoidal channels with dimensions of 2 m channel base widths and 1 m channel depths. Determination of water flow classification is calculated using the froude number indicator. The calculation results show a very critical flow (f>1) on all channel segments so reinforcement is needed by using the tire drop structure from the Komatsu HD 785 dumptruck and CAT HD 785 used tires. Runoff from the disposal area then streamed by using open channels by utilizing gravity to Angsoka settling pond. Open channel is trapezoidal shape with 2 m channel widths and 2 m channel depths.Keywords: Final dump, rainfall, open channel, froude number, tyre drop structure

Perencanaan Sistem Ventilasi Pada Tambang Batubara Bawah Tanah Seam C2 Di PT. Nusa Alam Letari, Desa Salak, Kecamatan Talawi, Kota Sawahlunto, Sumatera Barat. Rizka Sestiana; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 4, No 2 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. PT. Nusa Alam Lestari is one of the mining companies engaged in coal mining located in the Village of Salak, Talawi District, Sawahlunto City, West Sumatra. Mining activities carried out by PT. Nusa Alam Lestari was initially carried out with open pit mines and underground mines. However, since 2011 no open pit mining has been carried out due to the lack of economic coal mining (higher SR). So that currently mining is only done with underground mining. With the room and pillar mining method. PT. Nusa Alam Lestari has several seam coal reserves including the C1 seam, which ended its mining period in December 2017, because of that, it was followed by seam mining C2. As for the ventilation system used is the suction system (exhaus system) with the arrangement of blower relay. Installation of the suction blower system is followed by the installation of blowers, so that dirty air is immediately circulated out. Dirty air resulting from mining activities from one suction hole comes out through the ventilation hole and then changes with clean air entering through the other hole. The total air requirement for mining activities in C2 A seam is 686.6264 m3 / s, and in C2 B seam is 686.6264 m3 / s. . The number of blowers used to support 13 panels will be carried out development and 53 crosscut, then ventilation control is required by installing 13 auxiliary blowers on each panel with a diameter of 20 "(37 KW), and to release dirty air out, 6 main Suction blower fans will be installed 32 "(75 KW) in diameter.Modeling of the ventilation system using Ventsim visual 3 and producing a 3D ventilation system modelKeywords: Undergraound mines, Ventilation, Blower, Exhaus System, Modeling.

EVALUASI KINERJA UNIT CRUSHING PLANT JAQUES UNTUK MENINGKATKAN PRODUKSI GRANIT DI PT. TRIMEGAH PERKASA UTAMA KABUPATEN KARIMUN KEPULAUAN RIAU Riki Adha; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 5, No 2 (2020): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. PT Trimegah Perkasa Utama is a granite manufacturer in Indonesia. Granite is processedusing a crushing plant. Based on split stone production data at PT Trimegah Perkasa Utama in July2018, the company's granite stone production target of 180,000 tons / month was not achieved. Whilethe actual production obtained was 141,114 tons / month or 87.51% of the production target. This isdue to the many disruptions to repair and standby times during the processing of granite stones anddamage to the jaw crusher, so that from these disturbances the effective working time is reduced. Theresults obtained after repairing are reduction in repair time and standby time so that the primarycrusher's effective working time becomes 219.53 hours, 38.85% work efficiency and secondary andtertiary crusher's effective working time to 311.58 hours, work efficiency 53.72%. The value of crushingplant unit availability will also increase. Primary crusher unit production increased to 162,000 tons /month after increasing effective working time. Production of secondary and tertiary crusher units canbe increased by setting the gyratory crusher closed side setting to 71 mm and the cone crusher to 23mm.Keywords: Crushing Plant, Granite, Jaw Crusher, Production, Repair Time

Optimalisasi Pencampuran Batubara Untuk Memenuhi Kriteria Permintaan Konsumen Dengan Menggunakan Metode Simplek dan Evaluasi Biaya Pada Proses Blending Batubara Di Lokasi CV. Tahiti Coal, Talawi, Sawahlunto, Sumatera Barat Sonia Lestari; Rijal Abdullah
Journals Mining Engineering : Bina Tambang Vol 3, No 3 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

The quality of coal is influenced by the geological condition of a mining site, including high quality (higt quality), medium quality, and low quality. The amount of coal with calorific value ranges from 7600 kcal / kg to 7800 kcal / kg that has not been marketed accumulate in stockpile CV. Tahiti Coal. The high quality of coal in the CV. Tahiti Coal then not in accordance with the contract specifications with consumers. One of them with PT PLN (PERSERO) Sector Ombilin which require coal calorie 6300 kkal / kg. Therefore it is necessary for action to utilize high quality coal so as not to accumulate in CV stockpile. Tahiti Coal by mixing high quality coal with low quality coal.The simplex method is one of the mathematical models that can be used in solving the problem of allocation of finite sources optimally (maximum profit or minimum cost) of three or more variables.The results showed that the increase of calorific value from 6,283,08 Cal / gr, Ash 13,91%, sulfur 0,83% company result compared to comparison of method of calorific value value 6,328 Cal / gr, Ash 12,06%, sulfur 0.61% can be profitable for companies with a predetermined calorie value of 6,300 Cal / gr, Ash 13%, 0.8% sulfur. With the calculation of simplex method of the company can ease of work in the field. And calculation of coal blending cost for 1 month Rp. Total biaya blending Rp. 571.202.000Keywords: Blending, Coal, Calories, Simplek Method, Blending Cost

FAKTOR-FAKTOR YANG MEMPENGARUHI PERILAKU KARYAWAN DALAM PENERAPAN KESELAMATAN DAN KESEHATAN KERJA (K3) PADA AREA PENAMBANGAN TAMBANG BAWAH TANAH PT. BUKIT ASAM (PERSERO) TBK, UNIT PERTAMBANGAN OMBILIN, SAWAHLUNTO, SUMATERA BARAT Ricci Rahman; Rijal Abdullah; Yunasril Yunasril
Journals Mining Engineering : Bina Tambang Vol 2, No 1 (2015): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

The purpose of the health and safety program K3 in the company is to keep employees good in work and anticipate an accident. Unsafe action and unsafe condition are the direct caused of the accident happen. It can anticipate by improve the SMK3 management sistem. Knowledge, attitude, and the act of employees are the factors that influence the management system woking. Well, this research purpose to know the K3 Management Sistem working or not.This research is could be classified as to the kind of research of correlational. The population on this research is all employees of which are at work unit and means of mining engineering PT.Bukit Asam (Persero ) Tbk, UPO that total about 22. Data collection by using a questionnaire that has been tested validity and reliabilitasnya. Furthermore, the data mixed with use a computer program spss 15.0. version.The results from this research is there are significant relationship between knowledge with the application of the K3, between the attitude with the application of the K3, between the act of an employee with the application of the K3. It Can be concluded that from three factors are having a significant relation toward K3 applicate on PT .Bukit Asam (Persero) Tbk, UPO, Sawahlunto, of West Sumatra. In this case, the company should be enrich the employees knowledge about K3, make a lot of guidelines about the health and safety of employment in the area by mining, and the socialization regularly and sustainable covering all aspects.

Evaluasi Kinerja dan Biaya Pengangkutan Batubara Menggunakan Dump Truck dan Belt Conveyor pada Penambangan Muara Tiga Besar Utara PT. Bukit Asam, Tbk. Muhammad Fuadi Shiddiqi; Tamrin Kasim
Journals Mining Engineering : Bina Tambang Vol 3, No 4 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. Based on observations in the field in the process of transporting coal from the mining front to the temporary stockpile at the Coal Mine Muara Tiga Besar Utara PT. Bukit Asam, Tbk, obtained transportation equipment productivity is not optimal. This is because there is a long queue of dump trucks in the dumping process of coal material to the dump hopper, as well as low work efficiency of the tool. Actual productivity of dump trucks from field observations is 36.77 tons / hour on fleet 1 and 52,64 tons / hour on fleet 2, while productivity of conveyor belts is 1640,21 tons / hour. After the analysis is obtained the cause of the low productivity of the tool is low work efficiency. By increasing work efficiency, the ideal productivity of dump trucks is 50.72 tons / hour on fleet 1 and 72.60 tons / hour on fleet 2, while the ideal productivity of conveyor belts is 1879.41 tons / hour. From the calculations, the cost of transporting coal from the mining front to the temporary stockpile using a dump truck is Rp.17.882 / ton, using a dump truck and a conveyor belt is Rp.23.631 / ton. After an analysis of the amount of the cost of transporting coal using a dump truck is Rp. 14,576 / ton, using a dump truck and conveyor belt is Rp.17,705 / ton.Keywords: Front, Temporary Stockpile, Productivity, Work Efficiency, Fleet, Cost Transportation

Analisis Pengaruh Perubahan Nilai Total Moisture, Ash Content dan Total Sulphur Terhadap Nilai Kalori Batubara Bb-50 Di Tambang Banko Barat Pt. Bukit Asam, Tbk. Tanjung Enim Sumatera Selatan Muhammad Agil Fadhili; Ansosry Ansosry
Journals Mining Engineering : Bina Tambang Vol 4, No 3 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. One type of coal mined at PT Bukit Asam, Tbk is BB-50, in the distribution of coal there are found differences in the quality of coal. This study aims to obtain differences in calorific value (GCV), total moisture, ash content and total sulfur on front, stockpile and railway carriage and the effect of these parameters on calorific value (GCV). The analysis uses statistical methods that’s descriptive statistics, independent samples t-test, one way ANOVA, correlation and regression. Average calorific value (GCV) on fronts, stockpile and railway carriage respectively are 5037 Kcal/KgAr, 4928 Kcal/KgAr and 4869 Kcal/KgAr, the average of total moisture value respectively are 27.87%Ar, 27.84%Ar and 29.49%Ar, the average of ash content value respectively are 2.01%Ar, 4.01%Ar and 3.63%Ar and the average of sulfur value respectively are 0.49%Ar, 0.41%Ar and 0.51%Ar. Parameters that experience significant differences from front to the railway carriage are the calorific value has decreased by 96,056 - 240,610 Kcal/KgAr, total moisture has increased by 0,851 - 2,38%Ar and ash content has increased by 1,6 - 2,18%Ar. The effect of total moisture, ash content and total sulfur on calorific value is expressed in the equation GCV = 641,204 + 1,029TS - 63,781TM - 57,69ASH.Keywords: Coal Quality, Statistical Analysis, Front, Stockpile, Railway Carriage

ANALISIS KESTABILAN LUBANG BUKAAN BERDASARKAN KLASIFIKASI GEOMEKANIKA PADA TAMBANG BAWAH TANAH CV. TAHITI COAL, KOTA SAWAHLUNTO, SUMATERA BARAT Ika Desmawita; Raimon Kopa; Mulya Gusman
Journals Mining Engineering : Bina Tambang Vol 3, No 1 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

The excavation of a tunnel in rock mass resulting a change in the balance of rock conditions such as the occurrence of rock collapse and changes in the dimensions of tunnel at the tail gate THC-02 as a result of the displacement of the voltage distribution. It is desirable to have a good geotechnical analysis to provide an appropriate treatment of rocks excavated. This research was conducted to determine rock mass class, rock strength, and stability of open aperture based on potential of wedge collapse by estimating value of Safety Factor (FK) of openings and recommendation of ground support at tail gate hole THC-02 branch C-6.Classification of rocks mass with RMR system and FK potential of wedge using unwadge software. From the measurement of several parameters of RMR method, the average RMR value of 45,3 is obtained whereas rock mass class III (fair rock). From RMR value also obtained the maximum span value of tunnel is 3 m with collapse time 90 hours and collapsed load value 3.705 kg/ m2. The kinematic potential of wedge at the tail gate THC-02 branch C-6 in three general direction joint set with strike/ dip value: N1740E / 790, N1410E / 260, N1600E / 590 where FK value is 9,525 and the wedge stable.Based on the data it can be recommended as follows: if using rock bolt required rock bolt (20 mm diameter, fully grouted) with length 4 m spacing between 1,5-2,0 m bolt on the wall and roof and added wiremesh mounted systematically, 50-100 mm thick shotcrete installation on the roof and 30 mm on the wall, if wooden support required wood 20 cm diameter, length 2 m, grade III (360 kg / cm2) and spacing 1,5 m.

Perencanaan Reklamasi Dengan Revegetasi Pada Stockpile Di PT. Allied Indo Coal Kecamatan Talawi, Kotamadya Sawahlunto, Provinsi Sumatera Barat Fauzan Azim; Yunasril Yunasril
Journals Mining Engineering : Bina Tambang Vol 4, No 1 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. PT. Allied Indo Coal is a public company that conducts coal mining activities with the type of company PKP2B (Coal Mining Concession Agreement) under contract No. J2 / Ji.Du / 25/1985 on August 21, 1985. The mining contract period is 32 years with an area of 372.40 Ha.Reclamation with revegetation activities will be carried out in some part of the stockpile area, stockpile area to be reclaimed consists of 3 blocks, block 1 has an area about 0.83 ha, the block 2 about 1.46 ha and block III about 2.91 Ha. The total area to be revegetated in the reclamation activity about 5.2 ha. Because of PT.Allied Indo Coal has a license from forestry department (IUP) to exploit a forest area a so the company has an obligation to pay the land compensation, includes PNBP fees (Non-tax State Revenues). This stockpile is one of the areas subject to the PNBP (Non-tax State Revenue) with a tariff of Rp. 3,900,000 / ha every month. So that this activity aims to reduce the burden of PNBP (Non-tax State Revenues) to the company tax.Reclamation activities include land management activities. The land is recovered with overburden at the bottom and then the upper layercovered with top soil as a growing medium for plants. After the land arrangement is complete, the cover crop will be planted. Furthermore, the revegetation process starts from irrigation, digging planting holes, planting, and maintenance.Based on calculations in reclamation planning with revegetation, the direct costs for revegetation reclamation activities in Stockpile at PT. Allied Indo Coal is IDR 804,921,900.00. and indirect costs are IDR 173,101,842.00. Then the total cost of reclamation and revegetation at that location is IDR978,023,742.00.Keywords: Stockpile, PNBP, Reclamation Plan, Revegetation, Cost.

Page 21 of 61 | Total Record : 609

19 20 21 22 23

Filter by Year

2014 2025

Filter By Issues

All Issue Vol 10, No 1 (2025): Journals Mining Engineering: Bina Tambang (On Progress) Vol 9, No 2 (2024): Journals Mining Engineering: Bina Tambang Vol 9, No 1 (2024): Journals Mining Engineering: Bina Tambang Vol 8, No 3 (2023): Journals Mining Engineering: Bina Tambang Vol 8, No 2 (2023): Journals Mining Engineering: Bina Tambang Vol 8, No 1 (2023): Journals Mining Engineering: Jurnal Bina Tambang Vol 8, No 1 (2023): Journals Mining Engineering: Bina Tambang Vol 7, No 3 (2022): Journals Mining Engineering: Bina Tambang Vol 7, No 2 (2022): Journals Mining Engineering: Bina Tambang Vol 7, No 1 (2022): Journals Mining Engineering: Bina Tambang Vol 6, No 5 (2021): Journals Mining Engineering: Bina Tambang Vol 6, No 4 (2021): Journals Mining Engineering: Bina Tambang Vol 6, No 3 (2021): Journals Mining Engineering: Bina Tambang Vol 6, No 2 (2021): Journals Mining Engineering: Bina Tambang Vol 6, No 1 (2021): Journals Mining Engineering: Bina Tambang Vol 5, No 5 (2020): Journals Mining Engineering: Bina Tambang Vol 5, No 4 (2020): Journals Mining Engineering: Bina Tambang Vol 5, No 3 (2020): JURNAL BINA TAMBANG Vol 5, No 3 (2020): Journals Mining Engineering: Bina Tambang Vol 5, No 2 (2020): Journals Mining Engineering: Bina Tambang Vol 5, No 1 (2020): Journals Mining Engineering: Bina Tambang Vol 4, No 4 (2019): Journals Mining Engineering: Bina Tambang Vol 4, No 3 (2019): Journals Mining Engineering: Bina Tambang Vol 4, No 2 (2019): Journals Mining Engineering: Bina Tambang Vol 4, No 1 (2019): Journals Mining Engineering: Bina Tambang Vol 3, No 4 (2018): Journals Mining Engineering: Bina Tambang Vol 3, No 3 (2018): Journals Mining Engineering: Bina Tambang Vol 3, No 2 (2018): Journals Mining Engineering: Bina Tambang Vol 3, No 1 (2018): Journals Mining Engineering: Bina Tambang Vol 2, No 1 (2015): Journals Mining Engineering: Bina Tambang Vol 1, No 2 (2014): Journals Mining Engineering: Bina Tambang Vol 1, No 1 (2014): Journals Mining Engineering: Bina Tambang More Issue

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
-

Editorial Address
-

Location
Kota padang,

Sumatera barat

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name -

Contact Email -

Phone -

Journal Mail Official -

Editorial Address -

Location Kota padang, Sumatera barat INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
-

Editorial Address
-

Location
Kota padang,

Sumatera barat

INDONESIA