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All Journal Journals Mining Engineering : Bina Tambang Sumatra Journal of Disaster, Geography and Geography Education Jurnal Penelitian Pendidikan IPA (JPPIPA) Indonesian Mining Journal Jurnal Teknologi Informasi dan Pendidikan Science and Environmental Journals for Postgraduate Jurnal Ilmiah Multidisiplin Nusantara Gudang Jurnal Multidisiplin Ilmu Indonesian Mining Journal Menulis: Jurnal Penelitian Nusantara

Mulya Gusman

Universitas Negeri Padang

Author-ID : 731072

Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Materials Science & Nanotechnology Physics Public Health Social Sciences Other

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ESTIMASI CADANGAN INSITU MELALUI KEGIATAN INPIT DRILL PADA BUKIT EVEREST, CHEROKEE, DAN STRADA DI PT ANTAM (Persero) Tbk UBPN SULTRA Fathonie Yurnia H; Mulya Gusman; Adree Octova
Journals Mining Engineering : Bina Tambang Vol 3, No 2 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Penelitian ini membahas tentang pengoptimasian cadangan insitu nikel laterit pada Bukit Everest, Cherokee, dan Strada di PT ANTAM (Persero) Tbk UBPN SULTRA. Karena pada lokasi tersebut berdasarkan laporan penelitian terdahulu adanya perbedaan hasil estimasi cadangan berdasarkan klasifikasi kadar yaitu bijih dengan kadar Ni < 1.3 % tergolong pada kualitas waste, bijih dengan kadar Ni 1.3 -1.5 % tergolong kualitas limonit, bijih dengan kadar Ni 1.5 – 1.8 % tergolong kualitas Low Grade Saprolite Ore (LGSO), bijih dengan kadar Ni 1.8 – 2.0 % tergolong pada kualitas Hight Grade Saprolite Ore (HGSO), sedangkan untuk bijih dengan kadar Ni > 2.0 % akan mempertimbangkan kadar Fe dari bijih tersebut. Apabila Fe < 14 % maka tergolong kedalam HGSO dan jika Fe > 14 % maka tergolong LGSO dari kegiatan eksplorasi rinci dan inpit drill. Oleh karena itu perlu dilakukan pengkajian mengenai hal-hal yang menyebabkan perbedaan estimasi cadangan serta nilai ekonomis kegiatan inpit drill sehingga didapatkan benefit dari kegiatan inpit drill. Metode penelitian yang diterapkan adalah deskriptif kualitatif yang bersifat pembuktian dengan memadukan beberapa data yang meliputi kajian pustaka, data pengeboran, dan data analisis kadar serta nilai ekonomis dari kegiatan inpit drill. Berdasarkan hasil penelitian yang dilaksanakan dapat disimpulkan beberapa hal berikut. Pertama, Perbedaan yang signifikan terjadi pada kualitas LGSO dan HGSO karena jumlah cadangan yang memiliki nilai ekonomis dan dijadikan sebagai umpan pabrik yaitu HGSO dan LGSO pada kegiatan inpit drill lebih banyak dibandingkan pada kegiatan eksplorasi rinci.Kata Kunci: Cadangan, Eksplorasi Rinci, Inpit Drill, Nikel, Nilai ekonomis

Pemetaan Kualitas Airtanah Berdasarkan Parameter Total Dissolved Solid (TDS) dan Daya Hantar Listrik (DHL) dengan Metode Ordinary Kriging Di Kec. Padang Barat, Kota Padang, Provinsi Sumatera Barat M Asy Ruseffandi; Mulya Gusman
Journals Mining Engineering : Bina Tambang Vol 5, No 1 (2020): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstarct. The overuse of groundwater with the management of water sourcesthat ignores the environment can decrease the quantity and quality ofgroundwater. In the area of West Padang, groundwater quality degradation iscaused by the dynamics of development West Padang towards the profile ofMetropolitan City. The purpose of this research is to make the water quality zonemap based on DHL and TDS parameter, zone map based on decrease ofgroundwater level and predict the occurrence of seawater intrusion in the WestPadang. The research method used is to identify the quality groundwater and adecrease of groundwater level from water analysis using Kepmen ESDM Nomor1451.K/10/MEM/2000 and make the distribution of water quality and a decreaseof groundwater level using the software SGeMs and ArcMap GIS 10.5, andpredict patterns spread of seawater intrusion from water quality analysis usingthe regression equation. From the identification result and analysis of waterquality, West Padang is categorized as a safe zone. Safe zone is the area thatmeets one of decrease criteria on groundwater quality which are characterizedby the increase of TDS that is less than 1,000 mg/l or less than 1,000 DHLμmhos/cm.Keywords:.TDS, DHL, Safe Zone, Groundwater Quality

Analisis Ground Vibration pada Kegiatan Peledakan Overburden di Pit Timur PT Kuansing Inti Makmur, Jobsite Tanjung Belit, Kecamatan Jujuhan, Kabupaten Bungo, Provinsi Jambi Intan Juita; Mulya Gusman
Journals Mining Engineering : Bina Tambang Vol 6, No 5 (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.v6i5.114949

PT Kuansing Inti Makmur is a national private company engaged in the coal miningindustry using the blasting method. Ground vibration is one of the negative impacts of blasting onthe environment and surrounding buildings if it exceeds the predetermined standard. This mininglocation is close to Tanjung Belit Village which is currently 500 meters from the settlementaccording to the direction of mining progress. The threshold value for ground vibration is 0.9mm/s based on the standards of PT Kuansing Inti Makmur. Ground vibration measurement datawere analyzed using scaled distance theory to obtain the effect of explosive charge and distance onPPV which was divided into two based on the row direction (Row B – T and Row S – U) in orderto get more referentative results. In the direction of row B – T using the power regression equation,based on the calculation results obtained by the equation PPV=4844,8 x-1,648. Meanwhile, for the direction of row S – U using the average calculation using Microsoft Excel, the equation PPV =3669,05 x-1.6 is obtained. The vibration safety method uses a longer delay in the middle of the segment. Based on the scaled distance theory, predictions of explosive charge are obtained toachieve the specified vibration standard, namely for row B – T 55,5 kg ANFO at a distance of1600 meters and row S – U 78,6 kg ANFO at a distance of 1600 meters. By using the blastingmethod with a longer delay in the middle of the segment, it is more effective to reduce vibrationaccumulation and predict vibrations with good material quality results.

OPTIMALISASI KINERJA ALAT GALI MUAT DAN ALAT ANGKUT UNTUK MENCAPAI TARGET PRODUKSI OVERBURDEN MENGGUNAKAN METODE QUALITY CONTROL CIRCLE DI PIT 1 TIMUR PADA TAMBANG TERBUKA PT. ALLIED INDO COAL JAYA, PARAMBAHAN, SAWAHLUNTO, SUMATERA BARAT Aldi Fajri; Mulya Gusman
Journals Mining Engineering : Bina Tambang Vol 6, No 4 (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.v6i4.114144

PT. Allied Indo Coal Jaya is a company engaged in coal mining business. Mining methods applied by PT. Allied Indo Coal Jaya is an open pit mining and underground mine method. In the stripping and transportation activities of overburden in pit 1 east of PT. Allied Indo Coal Jaya operates 2 cat 330D2 L backhoe excavators as a load digging tool and 8 units of HINO 500 FM 260 JD dump truck transport equipment. The problem that often occurs in overburden removal activities is the amount of time obstacles that can be avoided by loading and conveyance. This causes the performance of loading and carrying equipment is not optimal so that the actual productivity achievement in October 2020 is only 61,870.72 bcm / month while the company's target is 110,000 bcm / month.A production management study was conducted by applying the Quality Control Cycle (QCC) method. This method makes it possible to conduct a review of the optimization of the performance of loading-carry digging tools and the obstacles experienced during the production process. The study began by recalculating the initial conditions taking into account the mining equipment used, namely CAT 330D2 L excavators and DT HINO 500 FM 260 JD. The actual productivity of 2 units of CAT 330D2 L excavators reached 62,381.28 bcm/ month and DT HINO FM 260 JD reached 58,027.58 bcm / month with a total of 8 units of DT, the match factor of heavy equipment reached 0.97.After evaluating the Fishbone Diagram, it is known that there are major problems, namely environmental factors, equipment, materials and man power that affect working time. The results showed that productivity increased with equipment of 2 units of CAT 330D2 L excavators by 110,461.46 bcm / month and production of 8 units of DT increased by 106,962,578 bcm. These results show that the performance of the tool can be improved to achieve the planned monthly targets. Keywords. Productivity, Exca CAT 330, DT HINO 500, QCC Methods

Evaluasi Geometri Jalan Tambang Menggunakan Teori AASHTO Untuk Peningkatan Produktivitas Alat Angkut Dalam Proses Pengupasan Overburden Di PIT Timur PT. Artamulia Tatapratama Desa Tanjung Belit, Kecamatan Jujuhan, Kabupaten Bungo Provinsi Jambi Audia Multriwahyuni; Mulya Gusman; Yoszi Mingsi Anaperta
Journals Mining Engineering : Bina Tambang Vol 3, No 4 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract.PT. Artamulia Tatapratama (PT. ATP) is a coal mining company with a surface mining system. As a result of not achieving the production target where one of the causes is the condition of the haul road, it is necessary to evaluate and improve the road. In this study, the geometry evaluation of the road will use the 1993 AASHTO.Based on the results of road geometry evaluation, the results obtained as follows: the actual straight road width is between 13-30 m while the theoretical road width should be 21.7 m. Actual road grades from Pit to disposal ranging from 2.47% to 11.30%. Cross slope from Pit to disposal is 440 mm / m. Superelevation figures of 26.88 meters curved is 0.04. So that the height difference between the inner and outer sides of the bend that must be made is 1.07 m. Actual productivity before road repair using a dump truck is Hitachi EH 1700 on average 98,309 BCM / Hour. Productivity has not reached the production target set by PT. Artamulia Tatapratama is 114 BCM / hour. As for productivity after road improvement 118,231 BCM / hour. The productivity has met the production target set by PT. Artamulia Tatapratama is 114 BCM / hour. Keywords: Surface mining, Open Pit Mining, Haul Road, Overburden, Productivity

Evaluasi Optimalisasi Alat Gali Muat dengan Metoda Overall Equipment Effectiveness (OEE) untuk Memenuhi Target Produksi Batubara Bulan Maret 2018 di Pit 1 Utara Bangko Barat PT.Bukit Asam Tbk, Tanjung Enim Sumatera Selatan Yugo Agustino; Mulya Gusman
Journals Mining Engineering : Bina Tambang Vol 3, No 4 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. Based on coal production data in North Pit 1, West Banko Mine PT. Bukit Asam, Tbk in March-May 2018, coal production does not reach the target. This is due to the low productivity of the excavator. To find out the improvement potential of a production process and the effectiveness of using an equipment, it is necessary to do an analysis using the Overall Equipment Effectiveness (OEE) method. OEE is known as one of the applications of total productive maintenance programs that have the ability to clearly identify the root of the problem and its causal factors so as to make the improvement effort more focused. After the root cause of the problem is known, it is used multiple linear regression statistical analysis and simple linear regression to determine the relationship and the maximum limits of the obstacles so that production can be achieved. After analysis and improvement with these methods obtained the production of backhoe komatsu PC 400LC, volvo EC 480DL, volvo EC 330BLC exceeded the planned target. However, the OEE value of each excavator still <85% has not reached world-class OEE value> 85%, it can be concluded that the condition of the equipment is not good. It is better to do repairs to standby time and tool breakdown. Keywords: Production, Overall Equipment Effectiveness (OEE), Linear Regression Statistical Analysis, Back Hoe, Standby Time

Evaluasi Optimasi Alat Gali Muat Dan Alat Angkut Terhadap Produksi Batu Kapur Menggunakan Metode Match Factor, Fishbone dan LinearProgramming Simplex pada Blok Pendapatan Negara Bukan Pajak (PNBP) dan Pit Limit Barat (PLB) Bukit Karang Putih PT. Semen Padang Naya Makaristi Andrea; Mulya Gusman
Journals Mining Engineering : Bina Tambang Vol 6, No 3 (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.v6i3.112664

In the implementation of limestone mining of non-tax state revenue blocks (PNBP) and west pit limit blocks (PLB) at PT Semen Padang,the company uses 1 Hitachi EX-2500 (EH 6) excavator and 5 Komatsu 785-7 HD dump trucks on the former blocks, and 1 Catterpillar 6030 (EC 3) Excavator and 3 HD 785-7/777 D dump trucks for the latter blocks. The average actual productivity in October 2020 in the PNBP block for 1 unit of the EH 6 excavator was 1,086.85 tons per hour and 5 units of HD 785-7 dump trucks of 643.76 tons per hour, while the average actual productivity in the PLB block for 1 unit of excavator EC 3 amounting to 1,324.65 tons per hour and 3 units of dump truck HD 785-5/777 D amounting to 1,184.83 tons per hour. Both have not reached the target of 1200 tons per hour. This is due to the mismatch of digging and transportation equipment, the large distribution time for each dump truck, standby hours and breakdown resulting in less working time as planned.Efforts made as an evaluation of the mismatch optimization of excavators and conveyances use the Match Factor method. The amount of dump truck circulation times, standby hours and breakdowns were done by looking at the root causes of the Fishbone diagram. To achieve optimal production results with minimal costs, the Linear Programming Simplex analysis method was used as an improvised solution in this study.The results of this study are based on the actual conditions, the amount of production in the PNBP and PLB blocks for 1 month was 1,027,391.00 ton, based on the evaluation with the Match Factor method, the amount of production was obtained as much of 1,308,072.54 tons, based on the evaluation with the Fishbone method, the total production was 1,164,531.38 tons, and based on the application of the analysis of the Linear Programming Simplex method, the amount of production was 1,237,902.15 tons. As the most optimal solution to be applied in achieving the limestone production target in October 2020, which is 973,989 tonnes, the Fishbone and Linear Programming Simplex method can be used because it reaches the most optimal amount of production in 1 month, which is 1,404,012.58Ton. Keywords: Productivity, Excavator, Dump Truck, Match Factor, Fishbone, Linear Programming Simplex

ANALISIS KESTABILAN LERENG MENGGUNAKAN METODE JANBU SIMPLIFIED PADA LERENG CBP-02 PT. CAHAYA BUMI PERDANA, KECAMATAN TALAWI, KOTA SAWAHLUNTO, SUMATERA BARAT OCI SHANIA PUTRI; Mulya Gusman
Journals Mining Engineering : Bina Tambang Vol 6, No 4 (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.v6i4.114108

PT. Cahaya Bumi Perdana (CBP) merupakan perusahaan yang bergerak dibidang jasa pertambangan yang melakukan penambangan batubara dengan luas WIUP PT. CBP ±71,96 Ha. Kegiatan penambangan yang diterapkan adalah sistem tambang terbuka dengan metode back filling dan sistem tambang bawah tanah dengan metode room and pillar. Salah satu faktor yang harus diperhatikan dalam sistem operasi tambang adalah faktor-faktor geoteknik pada litologi batuan di daerah penambangan. Karena pada saat proses desain suatu lereng sangat banyak faktor - faktor yang mempengaruhi dan harus diinput sebagai parameter untuk menentukan kemantapan lereng tersebut. Pada PT. Cahaya Bumi Perdana, terdapat lereng dengan ketinggian sekitar ±40 m dengan kemiringan 810 dengan material penyusun batuan terlapukkan (siltstone) yang berkemungkinan akan terjadinya longsor, dengan kondisi lereng tersebut berpotensi membahayakan pekerja dan menghambat produksi. Berdasarkan data hasil pengujian sifat fisik dan mekanik batuan siltstone mendapatkan nilai bobot isi asli 23,45 KN/m3 , nilai bobot isi jenuh 23,78 KN/m3 , nilai bobot isi kering 22,68 KN/m3 , kohesi (c) = 0,0448 Mpa dan sudut geser dalam (ϕ) = 46,43°. Analisis nilai faktor keamanan (FK) dan rekomendasi geometri lereng tunggal menggunakan metode Janbu simplified dengan ketinggian 40 m dan kemiringan 59˚ sehingga diperoleh FK sebesar 1,325 dalam kondisi kering, 1,302 dalam kondisi jenuh, 1,309 dalam kondisi natural.

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.

Analisis Regresi Multivariat Parameter Hambatan Produktivitas Crushing Plant Dalam Upaya Peningkatan Target Produksi Tambang Emas PT J Resources Bolaang Mongondow Site Bakan Sulawesi Utara Afrinal Afrinal; Mulya Gusman
Journals Mining Engineering : Bina Tambang Vol 3, No 4 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. Material processing is one of a very important stage in mining activities. In the processing of the material generally is the reduction of the size of the materials/rocks (comminution) by using the tool crushing. Crushing process should be done gradually because of limited ability to reduce the size of the tool material. Case study research conducted in the area of crushing plant PT J Resources Bolaang Mongondow. The research data consists of working time, idle time, delay time, breakdown and data excavator bucket. From the data analysis that is done then the obtained time total working time line 1 was 32.23 hours, line 2 that is 139.30 hours, line 3 of the 154.03 hours and line 4 with 154.71 hours. With a total barrier line 1 for each of the idle time 253.34 hours, delay time, 42.74 hours and breakdown 31.69 hours. Total line resistance 2 is the idle time 139.30 hours, delay time 75.45 hours and breakdown 24.55 hours. Total resistance line 3 that is idle time 55.01 hours, delay time 68.55 hours and breakdown 82.41 hours. While the total resistance line 4 with the idle time of 53.59 hours, delay time 78.04 hours and breakdown 73.66 hours.Keywords: Multivariat, Productivity, Idle Time, Delay Time, Breakdown

Co-Authors Abdul Razak Adree Octova Afaz, Triyanchy Afkar Afkar Afrinal Afrinal Agung Pujangga Ahmad Ikhsan Ainil Khalisah Aldi Fajri Aldri Frinaldi Aldri Frinaldi Corp Ali Amran Ali Amran Alifa Alifa Andree Octova Ansosry Ansosry Aprizon Putra Arif Maulana Hadi Audia Multriwahyuni Bambang Heriyadi Bram Subhan Maulana Catri, Indra Dasman Lanin Dedi Yulhendra Delvina, Mery Dita Aprilia Istiqamah Eri Barlian Fadel Muhammad Fadhilla Oktari Fariq Dwi Satria Diansa Fathonie Yurnia H Febrian, Dimas Tidar Fellya Septia Fauzi Femi Audya Syifa Fitrya Monica Genius Umar Gus Permata Sari, Indri Hafizurahman Dwi Saputra Harmedi Yulian Saputra Hedsing Cressendo Heldi Heldi Heldi, Heldi Herfien Heri Prabowo Ika Desmawita Ilham Muhammad Agung ilham siddiq Ilhami Putra Indang Dewata Intan Juita Intan Maharani Besri Iskandar Iskandar iswandi U Iswandi U Jeffrey Leonardi Nurkamal Jefri Julianda Putra Jevindo Ornandi Gemvita Khairunnas Khairunnas khazana tulistra M Asy Ruseffandi Mai Ridho Purnomo Putra Marisa Meliana Fitri Monalisa Monalisa Muhamad Sholichin Muhammad Abbil Raihan Muhammad Hazwafi Ardeva Muhammad Luthfi Muhammad Ridho Nadia Anggraini Putri Naya Makaristi Andrea Nopi Kohirozi Nur Efendi Nur Efendi Nurhasan Syah OCI SHANIA PUTRI olivia julianti Rahmad Fikri Raimon Kopa Ravilqi Medri Rayhan Viedyatha Rembrandt Rizki Amelia Sasqia Putri Roro Rasi Putra Rugbia Natasya Rusli HAR Sadilla, Fitri Saldy, Tri Gamela Skunda Diliarosa Skunda Diliarosta Sri Eka Putri Tamrin Kasim trihadma trihadma Triyanchy Afaz Umar, Iswandi Wahyu Prasetyo Agus Susanto Yasmi Antara Yoszi Mingsi Anaperta Yugo Agustino Yuli Asri

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