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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 Pengaruh Pemasangan Kisi Beton (Concrete Crib) Sebagai Perkuatan Lereng Terhadap Kestabilan Lereng Dengan Menggunakan Metode Kesetimbangan Batas Di PT. Dairi Prima Mineral Kabupaten Dairi Provinsi Sumatera Utara Wiwik Windasari B Manalu; Rizto Salia Zakri
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.v6i5.115168

Abstract

PT. Dairi Prima Mineral is a company engaged in the field of mineral mining, this is in the form of zinc ore and black lead minerals whose mining locations are located in Sopokomil Village, Dairi Regency, North Sumatra. the mining system is carried out with an underground mining system. construction activities or preparation for mining activities, the most important thing to do during construction activities is to pay attention to the condition of the mining area, especially slope stability, PT. Dairi Prima Mineral carries out protection activities on the slopes, this is related to the long-term safety of the slope treatment, and plans to build processing plant facilities and other infrastructure under the foot of the slope or the toe which is 10 meters from the slope.The method used is the boundary equilibrium method (simplified Bishop). As a result of the research, it can be concluded several things, namely the slopes in area 8 in actual conditions using actual slope geometry data in the field as well as laboratory testing to obtain physical and mechanical properties of soil and rock and after that a modeling of the slopes is carried out to see the slope safety factor and simulation on the slopes. when the slope is given a concrete crib, for the actual condition the safety factor for single slopes is 1,271 natural conditions and saturated conditions 1,231, from the actual conditions the slopes are not stable so it is recommended to use a double bench with natural slope FK 1,429 and saturated 1,393, from the recommendation FK has not complied with SNI 8470-2017 FK≥ 1.5. Furthermore, the double bench slope was given anchor bolt reinforcement for stable slope conditions with FK 1,535 saturated conditions and natural conditions 1,601 with the number of anchors used 24 anchors and the distance between anchors 3 meters with a length of 9 meters, from safe slope modeling or slopes in a stable condition with FK 1.5 for permanent slopes and long term slopes.After it is known that slope reinforcement with retrofit planning using the previous reinforcement specifications in area 8 is very maximal and economical, it can be seen from slope analysis using the simplified Bishop boundary equilibrium method by getting FK≥ 1.5  Keywords: Analysis, Slope Reinforcement, Concrete Crib, Bishop's Method, Slope Geometry. 
PENGENDALIAN KUALITAS BATUBARA SEAM 300 BERDASARKAN PARAMETER KUALITAS BATUBARA DARI FRONT SAMPAI KE BUYER DI PT KUANSING INTI MAKMUR, JOB SITE TANJUNG BELIT, BUNGO, JAMBI Hafiz Zakwan; Heri Prabowo
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.v6i5.115067

Abstract

Abstract. Coal quality control is an activity in controlling coal quality, because during the mining process until it reaches the buyer, there is a decline in coal quality. The coal mining activity was carried out in the west block at the East Pit of PT Kuansing Inti Makmur. This study was conducted to determine changes in coal quality, determine what factors cause changes in coal quality, and efforts in handling changes in coal quality with parameter values used, namely total water content (TM), ash content (Ash), and calorific value (GCV arb). Based on the results of the analysis of coal quality, there are changes when coal is transported to the stockpile from the front coal getting with the highest quality change, namely at seam 300 CR3 (TM = 4.06%, ASH = 0.23%, GCV = -303 Kcal/Kg ) and seam 300 LOWER (TM = 1.70%, ASH = 0.82%, GCV = -174 Kcal/Kg). And the results of the analysis of changes in coal quality when transported from the stockpile to the buyer there are changes when the coal arrives at the buyer with a change value of TM = 1.64%, ASH = 0.32%, GCV = -92 Kcal/Kg.
Evaluasi Kinerja Alat Gali Muat Dan Alat Angkut Untuk Mencapai Target Produksi 25.000 Ton/Bulan Pada Penambangan Batu Kapur PT. Bakapindo Di Jorong Durian, Kenagarian Kamang, Kecamatan Kamang Magek, Kabupaten Agam, Sumatera Barat Egivvano Iranda; Tri Gamela Saldy
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.v6i5.115200

Abstract

abstrack .This study aims to obtain an effort to increase the effective working time to achieve production targets and to obtain the need for loading and unloading equipment and transportation equipment needed to reduce waiting time by using queue theory at PT Bakapindo mining. Mining at PT Bakapindo is carried out using the quarry method, PT Bakapindo's production in May was 11837 tons/month and this did not meet the set target of 25,000 tons/month, digging tools used in PT Bakapindo 1 unit CAT 320 excavator and 2 units Mitsubishi Fuso 220 Ps, the productivity obtained from this tool is 15769.35 tons/month. By improving the efficiency of work time which can be increased to 84% and improving the composition of the tool, 1 unit of CAT 320 equipment can serve 3 units of Mitsubishi Fuso 220 Ps, so the productivity is 33028.67 tons/month. The results of this study indicate that the effective working time and working compatibility of mechanical tools are actually not maximized.
Permetaan Zonasi Indeks Kerentanan Seismik pada Daerah Tambang CV. Bara Mitra Kencana, Kecamatan Talawi, Sawahlunto Lady Ayu Sapitri; Adree Octova
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.v6i5.115182

Abstract

Abstract CV. Bara Mitra Kencana is a company engaged in coal mining, the existence of mining pits changes intact rock into rock mass and the continuity of its strength is disrupted, many weak areas in the mining area are one of the factors for landslides on the mine slopes, and a cause of work accidents.To find out whether the area has a weak field or not, a zoning mapping study can be done by looking for a seismic vulnerability index using the HVSR (Harizontal to Vertical Spectral Ratio) method.The dominant frequency value is 0.615 Hz – 13,112 Hz. The amplification value in the CV Bara Mitra Kencana mining area is 1,558 – 4,417. Seismic vulnerability index 0.233 x 10-6 s6/cm – 31.723 x 10-6 s2/cm with low to high categories.Mapping of seismic susceptibility index zoning at BMK 1 point where there is a high value of 31.72 x 10-6s2/cm, BMK 2 point where the value obtained is low at 0.23 x 10-6s2/cm, BMK 5, BMK 9, BMK 10 also classified as vulnerable to damage, because the seismic vulnerability index value is also high, ranging from 11 x 10-6s2/cm – 13 x 10-6s2/cm, Point BMK 3, BMK 4, BMK 6, BMK 7, BMK 8, BMK 11, BMK 12 is relatively safe because the seismic vulnerability index value is 0.26 x 10-6s2/cm – 8.8 x 10-6s2/cm, Areas prone to damage have a high seismic vulnerability index value, high amplification value and low dominant frequency value Keywords: Maps, Vibration, Waves, and Seismic
EVALUASI KESELAMATAN DAN KESEHATAN KERJA (K3) PADA PENAMBANGAN BATUBARA PT. DASRAT SARANA ARANG SEJATI PARAMBAHAN, DESA BATU TANJUNG, KEC. TALAWI, KOTA SAWAHLUNTO Ridho Gusfajri Ahad; Tri Gamela Saldy
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.v6i5.115149

Abstract

Abstract. PT. Dasrat Sarana Arang Sejati is an underground coal mining company located in Batu Tanjung Village, Talawi District, Sawahlunto City, West Sumatra. PT. Dasrat Sarana Charcoal Sejati has implemented occupational safety and health (K3) in its mining activities, but the implementation is still not optimal. This is due to the lack of signs and K3 posters in every branch of the mining tunnel, the use of personal protective equipment (PPE) is not optimal, some workers do not comply with company regulations resulting in work accidents, the need for revision of job safety analysis (JSA) and operational standards. existing procedures (SOP), as well as making the required JSAs and SOPs. The K3 evaluation that has been implemented uses a questionnaire with a knowledge value of 66.2, an attitude value of 66.3, and an action value of 58.1. Where the overall results of the questionnaire with an average value of 63.5. If the value is adjusted based on the Likert scale, it is in a good range (49-64). Revised and made JSA and SOP on gas checking activities in the work area, jack hammer operation, production activities, buffer maintenance, and coal transportation to the stockpile.
Evaluasi Jalan Tambang Untuk Meningkatkan Produksi dari Pit A 1 B Ke Evortable Finish Ore (EFO) Di PT Paramitha Persada Tama Blok Kerja PT Bintang Delapan Resources Edo Febrinaldi; Yoszy Mingsi Anaperta
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.v6i5.114937

Abstract

Abstract. PT Paramitha Persada Tama is a laterite nickel mining company located in Boenaga Village, Lasolo Islands District, North Konawe Regency, Southeast Sulawesi Province. PT Paramitha Persada Tama has a Production IUP on the Boenaga block and an Exploration IUP on the Marombo block. PT Paramitha Persada Tama is a company engaged in nickel mining which is one of the job sites of PT. Bintang Eight Resources. PT Paramitha Persada Tama has a production target of 55,000 tons per month but the production achievement achieved is only 49,452.552 tons, so improvements are needed. From observations in the field, firstly, the geometry of the haul road is not ideal for hauling movements and is not safe for other road users. The minimum width of the road that can be traversed by DT HINO 500 Fm 250 JD is 8.6 m on straight roads and 15 m on bends and the absence of safety bombs for some road points. Therefore, there is a need for a technical study of haul road geometry to optimize the cycle time of the conveyance. Several aspects that need to be studied in the mining haul road area are the width of the straight road, the width of the bend road, grade, superelevation, and cross slope. After repairs were made, the initial production output was 49,452.552 tons, after improving productivity, it became 55,743.336 tons, so that the production target of 55,000 tons was achieved.Keywords: production, road geometry, safety berm
Rancangan Pelaksanaan Eksploitasi Nikel pada Blok X PT Paramitha Persada Tama Desa Boenaga Kecamatan Lasolo Kepulauan Kabupaten Konawe Utara Provinsi Sulawesi Tenggara Hendri Pranata; Dedi Yulhendra
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.v6i5.115174

Abstract

PT. Paramitha Persada Tama is a company engaged in mining, especially nickel mining. PT. Paramitha Persada Tama itself has an IUP area of 175 Ha. PT. Paramitha Persada Tama conducts nickel mining with an open-pit mining system (surface mining) with the Cut and Fill method. To meet the production target of 30,000 tons/month with a Cut Of Grade (COG) value of 1.4% Ni and market demand of 1.8% Ni. The purpose of this study is to determine the amount of reserves in block X that will be exploited and how to design the stages of nickel mining in the company. From the estimation results carried out using the Inverse Distance Weight (IDW) obtained 843,975 tons of Ni. Based on the results of the Pit design that has been designed get the pit limit or the end of mining at elevation 40 masl. And alsodesign pits that have been designed sharedover several stages (Sequence). The phasingdone is staging period long(long term). In the first stage, the total mined reserves are 227,370 ton and overburden unloaded was 902,085 bcm. In the second stage, the reserves amounted to 565,950 tons and the overburden unloaded was 732,415 bcm and in the third phase, the reserves amounted to 50.655 tons with an overburden volume of 110,000 bcm.Keyword : Mineplan, Pit Design, Reserve, IDW, Sequence
ANALISIS PENGARUH PERKUATAN WIRE MESH TERHADAP KEKUATAN PILAR DI TAMBANG BAWAH TANAH DENGAN PENGUJIAN SKALA LABORATORIUM Aldo Azzana Zuhuri; Raimon Kopa
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.v6i5.115163

Abstract

Abstract. Pillars are natural support that serve to hold the material load on it. The development of deeper mines causes the burden received by the pillars will be greater so as to encourage an increase in the dimensions of the pillars to maintain the stability of the work area this will be a challenge to carry out the mandate of Annex VII of the Decree of the Minister of Energy and Mineral Resources No. 1827.K/30/MEM/2018 on Guidelines for the Implementation of Mineral and Coal Conservation. Therefore the pillar requires special reinforcement so as not to collapse during underground mining activities and also maximize recovery. In this study the reinforcement used is wire mesh with a diameter of 0.8 mm then the pillar sample is made of a homogeneous cylindrical material from a mixture of cement and sand with a composition of 1:2, the pillar sample is made close to the strength of coal. The results of this study showed that the installation of strengthening (wiremesh) caused an increase in the strength value on the pillar that was originally a pillar without buffering has a strong uniaxial press of 10.4 MPa and after strengthening the wire mesh obtained 14.65 MPa or increased by 42.5%. This is evidenced by the results of numerical modeling model II shows an increase in strength factor value from the original 1 to 1.3 and decreased horizontal displacement that was originally as far as 0.00024 m to 0.000063 m, the results of pillar strength testing in the laboratory and numerical modeling showed that the increase in strength occurred due to horizontal displacement in the pillar held by wire mesh so that the pillar seemed to experience pressure. Anchoring thus causes horizontal displacement to be smaller compared to horizontal displacement on pillars without wire mesh strengthening.
Analisis Pengaruh Penguatan Rockbolt Terhadap Kekuatan Pilar Persegi Di Tambang Bawah Tanah Dengan Pengujian Skala Laboratorium. Jufrizal .; Raimon Kopa
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.v6i5.115127

Abstract

Abstract. In underground mining using the room and pillar method, one way to increase the strength of the pillars is to use rockbolt reinforcement, where rockbolt reinforcement can be used if the pillar consists of compact rock, not too soft and not too hard. Because rockbolt has a significant effect on pillars, this study aims to analyze the effect of rockbolt reinforcement on square pillars by using laboratory testing of the physical and mechanical properties of pillar samples and performing numerical modeling of unreinforced and rockbolt-reinforced pillar samples. From the results of the study, it was found that the pillars without reinforcement showed an average strength value of 10.73 MPa, while the pillars with rockbolt reinforcement showed an average strength value of 12.70 MPa, so that the addition of rockbolt reinforcement showed an increase in pillar strength of 18.36%. Pillar modeling without reinforcement shows a strength factor value of 1,05, while pillar modeling with rockbolt reinforcement shows a strength factor value of 1,2, so there is an increase in the strength factor value of 14,3 %. Pillar modeling without reinforcement shows a horizontal displacement value of 5,8x x    m, while pillar modeling with rockbolt reinforcement shows a horizontal displacement value of 2,2  x   m, so there is decrease in horizontal displacement value by 37,93 %.Keywords : Pillar, Rockbolt, Physical Properties, Mechanical Properties, Modeling.
Analisis Proksimat Briket Biobatubara Campuran Batubara Seam 1 CV. Bara Mitra Kencana dengan Arang Tempurung Kelapa Wina Partiwi; Heri Prabowo
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.v6i5.115204

Abstract

Briket biobatubara adalah jenis produk briket yang menggunakan bahan baku batubara dan biomassa, baik dengan atau tanpa bahan pengikat maupun bahan imbuh lainnya. Banyak penelitian yang telah dilakukan untuk memanfaatkan batubara dengan nilai kalori rendah terutama penelitian dalam pembuatan briket karena pembuatannya yang sederhana, praktis, ekonomis serta efektif dan efisien untuk dimanfaatkan. Berangkat dari pemikiran diatas, maka muncul beberapa pemikiran untuk meningkatkan kualitas dari batubara lokal. Usaha tersebut yaitu dengan mencampur batubara lokal dari CV. Bara Mitra Kencana yang merupakan batubara Seam 1 yang memiliki kalori sebesar 4800 an Kcal/Kg dengan tempurung kelapa yang menggunakan bahan perekat/binder, sedangkan bahan perekat yang digunakan adalah menggunakan tepung tapioka, dengan komposisi campurannya adalah batubara 50%, 65% dan 80%, biomas 35%, 25% dan 15%, bahan pengikat 15%, 10% dan 5%. Dari ketiga komposisi campuran tersebut didapatkan nilai analisis proksimate dan uji pembakarannya. Studi mendapatkan kesimpulan bahwa analisis proximate briket B1 memiliki nilai calorific value 5.617,52 Kcal/Kg, ash content 23,65%, inheren moisture 6,13%, total moisture 5,49%, volatile matter 28,41% dan fixed carbon 41,81%, lama penyalaan awal selama 293 detik, lama penyalaan hingga menjadi abu selama 4.140 detik, dan kecepatan pembakaran 0,00439 g/detik, briket B2 memiliki nilai calorific value 5.236,26 Kcal/Kg, ash content 27,88%, inheren moisture 5,43%, total moisture 5,28%, volatile matter 28,88% dan fixed carbon 37,81%, memiliki lama penyalaan awal selama 271 detik, lama penyalaan hingga menjadi abu selama 3.345 detik, dan kecepatan pembakaran 0,00555 g/detik, dan briket B3 memiliki nilai calorific value 5.107,75 Kcal/Kg, ash content 31,76%, inheren moisture 4,57%, total moisture 4,6%, volatile matter 30,61% dan fixed carbon 33,06%, lama penyalaan awal selama 189 detik, lama penyalaan hingga menjadi abu selama 2.904 detik, dan kecepatan pembakaran 0,00654 g/detik.Kata kunci: Briket biobatubara, Analisis Proksimate, Uji Pembakaran.

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