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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 LERENG MENGGUNAKAN METODE BISHOP PADA JALAN UTAMA MENUJU PENAMBANGAN DI PT. CAHAYA BUMI PERDANA, KOTA SAWAH LUNTO Satria Al Rafid; 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.v6i2.111761

Abstract

Abstract. PT. Cahaya Bumi Perdana is a company engaged in the coal mining business in Sawahlunto City. Mining activities carried out are open pit mining system with replenishment method and underground mining system using space and pillar method. In August 2020 there was a landslide on the main road to the mining site. The type of slope forming material is clay. The assumed arc landslide stretch with the initial slope geometry before the landslide is 70 ° and 35 meters high. Landslides disrupt the main road access to the mine due to falling material. The method used in this research is the bishop method and the hoek and bray method. The results of this study can be ignored as follows. Data from laboratory testers were density 9,212 kN/m3 , cohesion 53,462 kN/m2 , and deep shear 22,950. The density value in dry conditions is 8,065 kN / m3, and at saturated conditions is 10,196 kN/m3 . The slope factor in natural conditions is 1.267, 1.372 in dry conditions, and 1.178 in saturated conditions. Recommended slope geometry using the bishop method with a new slope height of 17 meters, a width of 10 meters and a slope of 500 per level, and 420 for the total slope, obtained a new safety factor. The total safety factor in dry conditions is 2,223 and single slop is 3,031. In saturated conditions, the total is 1,932 and 2,546 singles. With the hoek method, the safety factor for new slopes in dry conditions is 2.49 and 1.93 in saturated conditions with the same height, width and slope as the bishop method.Key Words : Safety Factor, Bishop Metode, Slope.
Analisis Pengaruh Geometri Peledakan Terhadap Fragmentasi Hasil Peledakan Serta Digging Time Dan Produktivitas Alat Gali Muat Pada Tamka PT. Allied Indo Coal Jaya, Kota Sawahlunto Rahadiyan Malvin Sunyoto; 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.v6i1.111467

Abstract

Abstract. The overburden disassembly process implemented by PT. Allied Indo Coal Jaya is by drilling and blasting. Observations in the field of actual blast geometry applied by the company obtained fragmentation of boulder-sized blasting results with a percentage of + 31%. The large percentage of boulders resulted in the diggability of the loading and unloading tools and the company's planned load digging productivity target of 100 bcm/hour was not achieved. The study aims to design optimum blasting geometry to reduce the percentage of boulders so that loading activities become effective and the productivity of loading tools increases. The research method was carried out by providing recommendations for blasting geometry based on R.L. Ash theory and the method "The Modern Technique of Rock Blasting" and carried out the application of one of the geometric designs to be applied in the future for the company. The geometry of the proposal applied in the field is: burden: 2.7 m, spacing 3 m, stemming: 2.5 m, subdrilling: 0.8 m, level height: 5.2 m, explosive hole depth: 6 m, powder column: 3.5 m, and powder factor: 0.28 kg/m3 where boulder size fragmentation resulted from analysis results with desktop split software of 14%. Keywords: Blasting Geometry, Blasting Result Fragmentation, Digging Time, R.L. Ash, Modern Technique of Rock Blasting
Efektifitas Pemanfaatan Sumur Resapan dan Biopori sebagai Artificial Recharge untuk Meresapkan Air Hujan ke dalam Lapisan Akuifer Dangkal pada DAS Batang Kuranji Kota Padang Alviansyah Alviansyah; Rusli HAR
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.v6i2.111708

Abstract

Abstract. The population density in Batang Kuranji wathershed caused land clearing to build new settlement areas. However, this land clearing caused a new problem; causing a reduction of green areas that function as rainwater catchment areas. It also can cause an area to have the potential for flooding. Furthermore, it can decrease the quantity of groundwater. In order to increase the effort to absorb rainwater into the soil in Batang Kuranji watershed, so that the artificial recharge was carried out. The method used was the construction of absorption wells and biopores. This research was conducted to calculate the volume of rainwater that can be absorbed by absorption wells and biopores in certain rainy conditions in Batang Kuranji watershed. Besides that, hydraulic conductivity testing was carried out in order to know how the state of the soil texture in the study area. This study used an experimental method that was carried out in Batang Kuranji watershed, Padang City. Based on the insitu soil hydraulic conductivity test, the average hydraulic conductivity value in the absorption wells area was 1.925 x 10-3 cm/second. This value described that the soil in the study area was classified as a relatively fast soil classification in absorbing water. After conducting the research with three measurements, it was found that the total water discharge absorbed by the gutter water absorption wells was 0,215 m 3 , for open absorption wells was 0,222 m 3 , and for biopores was 0,0104 m 3 .Keywords: Artificial Recharge, Absorption Wells, Biopores, Hydraulic Conductivity
Kajian Teknis Penentuan Geometri Peledakan Untuk Mengoptimalisasikan Perolehan Hasil Peledakan CV. Tekad Jaya Desa Lareh Sago Halaban, Kabupaten Lima Puluh Kota, Sumatera Barat Andre Tri Wahyudi; Raimon Kopa
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.v5i5.109783

Abstract

Abstract.Limestone Mining at CV. Tekad Jaya with a surface mining system with the Quarry mining method. The proportion of boulder-sized fragmentation blasting 80 cm produced at this time in the field is > 30%, as a result the diggability of the digging time is not optimal that is ±13 second. This study aims to design a new blasting geometry to obtain optimal fragmentation results that is <20%, so that the digging time results to be optimal that is 8-10 second. The recommendation of blasting geometry using the research method is based on the theory of R.L. Ash and C.J. Konya and from one of the good blasting geometry map designs will be applied in the field so as to get the optimal blasting geometry design from one of these blasting geometry designs to be applied in the future for the company. The basis of the results of field application of one of the blasting geometry plans, namely: load: 1.9 m, space: 1.9 m, stemming: 1.4 m, subdrilling: 0.3 m, level height: 5 m, hole depth explosion of 5.5 m, powder column: 4.1 m, and powder factor: 0.8 kg / m3 where the fragmentation of the boulder size 80 cm resulting from the split desktop software analysis was 3.17%. The resulting digging time was 9.63 seconds Keywords:Geometry Blasting, Blasting Result Fragmentation, R.L. Ash, C.J. Konya, Excavation Time
Penerapan Kesehatan dan Keselamatan Kerja dan Perhitungan Statistik Kecelakaan Kerja Guna Mengurangi Resiko Bahaya pada Area Penambangan Batubara Tambang Terbuka PT. Daya Bambu Sejahtera, Kabupaten Tebo, Provinsi Jambi Rahmad Thry Arswendo; Heri Prabowo
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.v6i4.113779

Abstract

PT. Daya Bambu Sejahtera sebagai salah satu perusahaan yang bergerak dibidang pertambangan Batubara. PT. Daya Bambu Sejahtera berlokasi di Desa Mangupeh Kecematan Tengah Ilir Kabupaten Tebo Provinsi Jambi. Luas izin usaha pertambangan  (IUP)  PT.  Daya Bambu Sejahtera  adalah  seluas  3.548,8  Ha. Sedangkan  target  produksi  tahunan  adalah  sebesar 1.200.000  ton/tahun.  Tujuan penelitian ini adalah untuk menilai kinerja K3 di PT. Daya Bambu Sejahtera pada tahun 2017-2020 menggunakan statistik kecelakaan kerja . Penelitian ini bersifat deskriptif yakni menggambarkan statistik kecelakaan kerja di PT DBS. Statistik kecelakaan kerja meliputi incident rate, frequency rate, severity rate dan safe T-score. Pengumpulan data menggunakan data sekunder, lembar observasi dan wawancara. Hasil penelitian menunjukan bahwa terjadi 4 kejadian kecelakaan kerja selama tahun 2017-2020. Hasil perhitungan statistik kecelakaan kerja didapatkan nilai incident rate dan frequency rate tertinggi pada tahun 2018, sedangkan severity rate tertinggi terjadi pada tahun 2017, 2018, dan 2019. Berdasarkan perhitungan safe T-score, kinerja K3 hanya mengalami peningkatan pada tahun 2019. Perkiraan terjadinya kecelakaan kerja di PT. Daya Bambu Sejahtera adalah adanya aturan- aturan tentang Keselamatan dan Kesehatan Kerja (K3)  yang belum terlaksana dengan baik. Kesadaran karyawan dalam bekerja yang memenuhi kaedah Keselamatan dan Kesehatan Kerja (K3) belum tercapai, contohnya pemakaian alat pelindung  diri  (APD)  pada  saat  bekerja,  Beberapa  metode  dalam  mengenali potensi bahaya ditambang terbuka seperti Job Safety Analysis masih belum terealisasi di PT. Daya Bambu Sejahtera.
Analisa Kestabilan Lubang Bukaan Ditambang Bawah Tanah Berdasarkan Pengklasifikasikan Geomekanika (RMR-System) Pada Penambangan Galena Di PT. Berkat Bhinneka Perkasa (BBP) Pangkalan Lima Puluh Kota, Sumatera Barat Novriani Nengsih; Raimon Koppa
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.v6i3.112705

Abstract

Pada penambangan tambang bawah tanah galena PT.Berkat Bhinneka Perkasa menggunakan penyangga dari beton (shortcrete), Dimana pemasangan  penyangga tidak sepanjang lubang terowongan yang dibuatnya. Pada saat ini penggaliantunnel I telah dilakukan  sepanjang 135 m, tetapi penyanggaan yang dipasang perusahaan dari mulut terowongan hanya sepanjang 10 m tanpa mempertimbangkan karakteristik batuannya, sehingga tidak diketahui berapa nilai dari FK  lubang bukaan tersebut. Penelitian ini dilakukan untuk menentukan kelas massa batuan, klasifikasi massa batuan menggunakan metode RMR, mengetahui kekuatan batuan di tunnel I PT.BBP Pangkalan, mendapatkan nilai stand up time dan span penyangga sebagai acuan penginstalasian penyangga lubang tambang, mendapatkan rekomendasi sistem penyanggaan yang sesuai berdasarkan hasil grounsuppport RMR (Bieniawski 1989) pada tunnel I, Dari pengukuran beberapa parameter metode RMR diperoleh, pada tunnel I untuk batuan Galena  berada pada kelas II (good rock) dengan nilai RMR batubara sebesar 65. Berdasarkan pengolahan Sofware Undwedge menggunakan metode system peyangga RMR terjadi peningkatan nilai FK, dari 1.130 menjadi 2,481.Analisa Kestabilan Lubang Bukaan Ditambang Bawah Tanah Berdasarkan Pengklasifikasikan Geomekanika  (RMR-System) Pada Penambangan Galena Di PT. Berkat Bhinneka Perkasa (BBP) Pangkalan Lima Puluh Kota, Sumatera Barat
Optimalisasi Alat Muat Dan Alat Angkut Dengan Menggunakan Metode Quality Control Circle Untuk Memenuhi Target Produksi Tambang Bijih Emas Bawah Tanah Di PT. Dempo Maju Cemerlang, Kabupaten Pesisir Selatan, Provinsi Sumatera Barat. ilham siddiq; 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.v6i3.112558

Abstract

Based on ore production data at PT. Dempo Maju Cemerlang found that the production target is 1500 tons / month, while what it gets is 900 tons / month. The contributing factors are the inadequate work of the loading equipment, transportation equipment, and the presence of a time slot. Ideal conditions in the production process are very difficult to achieve, this can be pursued by optimizing these tools. One of the methods used is the quality control circle (qcc) method. The actual production of loading equipment is 1298,21 tonnes / month and transportation equipment is 1414,09 tonnes / month. Identification of problems seen from human, machine, and environmental factors. The actual production is 1200 tons, and the actual productivity of the loading equipment is 1298.21 tons / month and the transportation equipment is 1414.09 tons / month. while the target of ore production is 2100 tons / month. After optimization, it was found that the ore production was 2111 tons, and the productivity of loading equipment was 2297.87 tons / month and transportation equipment was 2513.90 tons / month. So, the optimization obtained is 49.17% for loading equipment and 50.50% for conveyances of the required target, around 40.56% increase in loading tool productivity and 34.04% increase in conveyance productivity. It can be concluded that the increase in production carried out by the qcc method has been achieved. So it requires equipment maintenance management, rail checking, and increased operator discipline.
Pemanfaatan FABA, Tawas dan Kapur Untuk Menetralkan Air Asam Tambang Indra Siregar; Rusli HAR
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.v6i4.114136

Abstract

Coal is the most important source of energy for electricity generation and serves as a basic fuel for industries such as steel and cement production as well as fuel for power generation. However, it is undeniable that the continuous use of coal also produces negative impacts from the mining process, namely acid mine drainage and coal processing in power plants, namely Fly Ash and Bottom Ash (FABA). Coal mining produces waste products in the form of acid mine drainage. FABA and Acid Mining Water (AAT) are two of the many negative effects of mining, so there is a need for awareness of the issues of damage that threaten the surrounding environment. FABA is solid waste produced from the coal combustion process for power generation. This study will discuss the use of FABA, alum and lime to neutralize acid mine drainage. Acid mine water obtained from PLTU X has a pH of 3.74. Neutralization of acid mine drainage is done by mixing AAT with FABA, AAT with alum and AAT with lime. Then proceed with mixing AAT with FABA and alum, mixing AAT with FABA and lime and mixing AAT with alum and lime. After that, mixing AAT with FABA, alum and lime. The results of this study provide variations in the composition of FABA, alum and lime which are good for neutralizing acid mine drainage  Keywords: Neutraluzation, Acid Mine Water (AAT), FABA, Alum, Lime
Analisis Sistem Ventilasi untuk Meminimalisir Terjadinya Swabakar pada Tambang Batubara Bawah Tanah THC 04 CV. Tahiti Coal, Sangkar Puyuh, Talawi, Sawahlunto Multavich Multavich; Bambang Heriyadi
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.v6i4.113994

Abstract

May 21, 2020 CV. Tahiti Coal has experienced a self-burning or also known as spontaneous combustion of coal (sponcom). The incident occurred at branch 401 B of the tunnel THC 01. Preventing the occurrence of sponcom in other mine tunnel, the research of ventilation system was carried out on the tunnel THC 04. This location was chosen because it has the potential to experience a sponcom. Research was conducted to obtain the causative factors that allow the occurrence of sponcom and continued with the design of ventilation systems to reduce the likelihood of sponcom. The results of this study show that the main factor that can conduce sponcom in the tunnel THC 04 is the lack of air quantity. The minimum quantity of air that can control heat and humidity is 8.7 m3/s, while the quantity of air in tunnel THC 04 is 3.03 m3/s. Based on measurements taken, the air temperature at THC 04 ranges from 29°C to 31°C, and humidity is between 90% to 100%. Therefore, the researchers designed the ventilation system by creating a translucent hole that leads to the surface and placing an exhaust fan at the end of the hole. This design can make the air quantity at THC 04 increase to 15.5 m3/s.
ANALISIS KESTABILAN LERENG MENGGUNAKAN METODE JANBU SIMPLIFIED PADA LERENG CBP-03 PT. CAHAYA BUMI PERDANA, KECAMATAN TALAWI, KOTA SAWAHLUNTO, SUMATERA BARAT Excell Vicky Satria; Yoszi Mingsi Anaperta
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.v6i4.113695

Abstract

PT. Cahaya Bumi Perdana merupakan salah satu perusahaan yang bergerak di bidangpertambangan dan telah berinvestasi di Kota Sawahlunto. Bahan galian yang telah ditambangadalah batubara. Secara administrasi lokasi KP Eksploitasi tersebut berada di Kumanis, DesaTumpuk Tangah, Kecamatan Talawi, Kota Sawahlunto, Provinsi Sumatera Barat dengan luas103,10 Ha. Pada PT. Cahaya Bumi Perdana, terdapat lereng dengan ketinggian sekitar ±35 mdengan kemiringan 750 dengan material penyusun batuan terlapukkan (siltstone) yangberkemungkinan akan terjadinya longsor, dengan kondisi lereng tersebut berpotensimembahayakan pekerja dan menghambat produksi. Berdasarkan data hasil pengujian sifat fisikdan mekanik batuan siltstone mendapatkan nilai bobot isi asli 21,87 KN/m3, nilai bobot isi jenuh22,14 KN/m3, nilai bobot isi kering 20,85 KN/m3, kohesi (c) = 0.0434 Mpa dan sudut geser dalam(ϕ) = 45°. Analisis nilai faktor keamanan (FK) dan rekomendasi geometri lereng aktualmenggunakan metode Janbu simplified dengan ketinggian 35 m dan kemiringan 62˚ sehingga diperoleh FK sebesar 1,313. Untuk rekomendasi geometri lereng dalam keadaan jenuhmenggunakan metode janbu simplified dengan ketinggian 35 m dan kemiringan 62˚ diperoleh FKsebesar 1.307.

Page 39 of 61 | Total Record : 609

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