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All Journal Journals Mining Engineering : Bina Tambang Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri

Bambang Heriyadi

Universitas Negeri Padang

Author-ID : 2720236

Computer Science & IT Earth & Planetary Sciences Engineering Industrial & Manufacturing Engineering

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ANALISIS KESTABILAN LERENG JALAN TAMBANG DI PT. SUMBAR CALCIUM PRATAMA JORONG ATAS HALABAN, NAGARI HALABAN, KECAMATAN LAREH SAGO HALABAN, KABUPATEN LIMA PULUH KOTA, PROVINSI SUMATERA BARAT Rully Septian; Bambang Heriyadi; Heri Prabowo
Journals Mining Engineering : Bina Tambang Vol 3, No 2 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

mining area. Planning of the slope geometry will be used by Bishop Simplified and Hoek and Bray methods.Initial data Clay: Unit Wight (γ) = 19.67 kN / m3, Cohesion (c ') = 32.17 kN/ m2 and internal angle (φ') = 39.11 °. The initial slope height is 14.543 meters and overall angle of the slope is 51 °.Geometry of slope recommendation: 1. Bishop Simplified method of saturated condition FK 0.984 witch mean slope is insecurity, reduction of slope angle from 51 ° to 42 °, FK 1,324 slope in safe state. 2. Method Hoek and Bray saturated conditions FK 1.25 Unsafe slope, slope angle from 51 ° to 42 °, then FK 1.41 slope in safe condition.Keywords: initial geometry, bishop simplified, hoek and bray, security factor

Perencanaan Jalur Ventilasi dan Sistem Jaringan Ventilasi Udara Pada Tunnel Mainshaft Auxiliaryshaft Tambang Bawah Tanah PT. Allied Indo Coal Jaya Sawah Lunto Noval Satria; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 5, No 4 (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.v5i4.109272

Abstract. There are two kinds of underground mining systems which are natural ventilation systems and mechanical ventilation systems. The air quantity at the front of J6 and J7 does not meet the permitted standards in the Minister of Energy and Mineral Resources RI No. 1827 K / 30 / MEM / 2018. The air quantity at the front of J6 is 1,136m3 / second the air needed is 7,233 m3 / second and the amount of air in front of J7 is 1,528 m3 / second while the amount needed is at 7,167 m3 / second. At Front Junction 6, the available air demand is 1,136 m3 / sec while the air required is 7,233m3 / sec. A blower of 8.3 Kw ≈ 10.5 Kw is needed, and at the front of Junction 7 the available air demand is 1,528 m3 / s, the air needed is 7,167 m3 / s for the air demand when mining activities are needed, the blower power is 8.9 Kw ≈ 10,5 Kw. New air circulation modeling design using Kazemaru software.Keywords: Vetilation Lines, Ventilation Network Sistem,Underground Mining, Air Quality and Air Quantity

Optimalisasi Timbunan Banko Barat Pit-1 Timur Tahun 2014 di PT. Bukit Asam (Persero), Tbk Unit Penambangan Tanjung Enim Andre Gustian; Bambang Heriyadi; Yoszi Mingsi Anaperta
Journals Mining Engineering : Bina Tambang Vol 2, No 1 (2015): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Site selection is influenced by several factors like the volume of material to be deposited, whether or not coal seams underneath, distance and topography. The amount of material that must be stockpiled on site Disposal Dumping Material (heap) the longer the sums are increasing, This goes along with the progress of mining.Considering the increasing number of opening new mines in PT. Bukit Asam (Persero), Tbk, so that the soil exposition needs to be managed properly. Required to standardize the management of the soil pile, so the pile area can be used optimally.From the direct she ar strength test results data showed parameter are cohesion ( C ) = 36.24 kPa, friction angle (f) = 16.72˚, and wet density (gw) = 19.36 kN/m3Based on simulation results F Kon a pile Banko Barat Pit-1 Timur derived the optimization of simulation (Geostudio/ Slope W 2007) sho thatby adding 7 ladder more with 6 meter high slope, angle ofa single slope 1: 2 and 25 meter of wide berm is still safe.

Analisis Kestabilan Tunnel Berdasarkan Klasifikasi Geomekanika (RMR-System) Pada Penambangan Batubara Bawah Tanah Metoda Room and Pillar PT. Allied Indo Coal Jaya (AICJ) Sawahlunto Muhammad Deno Akbar; Bambang Heriyadi; Ansosry Ansosry
Journals Mining Engineering : Bina Tambang Vol 4, No 3 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. Excavation of tunnels in underground mines is quite a complex job, because it will give a change in balance from rock conditions that can be failure. This research was conducted to determine rock strength, rock mass class, and open hole stability based on the potential of wedge debris by estimating the Safety Factor (FS) value of the planned tunnel. Based on the RMR-System method, the value for coal is 49 points, where this rock is included in class III (fair rock) with maximum stand up time is 310 hours (±13 days) for 3m of span. The results of the RMR ground support recommends using Rock bolt with a diameter of 20 mm, fully grounted length 4 m, and spacing 1.5-2 m. Another alternative is to use a Class V wooden stand. Based on the results, the value of safety factor (FS) on the roof (siltstone) is 1,944, FS on the left wall (Coal) is 1,346, and the right wall (Coal) is 4,067. From the results of rock reinforcement using the RMR-System ground support recommendations, the result is an increase in the Safety Factor (FS) value from the value of 1,346 to 2,377 so that the wedge is more stable.Keywords: Tunnel, Safety Factor (FS), RMR System , Stand-Up Time, Ground Support.

STUDI TENTANG KESELAMATAN DAN KESEHATAN KERJA (K3) PADA PERTAMBANGAN EMAS RAKYAT DI KENAGARIAN PALANGKI KECAMATAN IV NAGARI KABUPATEN SIJUNJUNG Zhilal Darma; Yunasril Yunasril; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 3, No 1 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Penelitian ini berawal dari pengamatan peneliti terhadap kecelakaan kerja yang terjadi pada pertambangan emas rakyat di Kabupaten Sijunjung. Tingkat kecelakaan kerja yang tinggi merupakan suatu permasalahan yang harus diselesaikan. Selain itu, pertambangan rakyat juga menyisakan beberapa permasalahan antara lain masih tingginya tingkat kekeruhan sungai akibat pertambangan emas rakyat, masih banyaknya penambangan yang tidak sesuai dengan aturan perizinan pertambangan dan lahan pascatambang yang tidak reklamasi. Pengetahuan penambangan tentang keselamatan dan kesehatan kerja menjadi faktor yang mengurangi kecelakaan kerja, dapat diartikan bahwa pengetahuan pekerja tambang merupakan bagian penting bagi para pekerja sebagai bentuk tanggapan terhadap keselamatan dan kesehatan kerja yang dipengaruhi oleh pengetahuan masing-masing pekerja tersebut. Oleh karena itu, penelitian ini bertujuan untuk mengetahui bagaimana gambaran tentang kegiatan pertambangan emas rakyat dan bagaimana pengaruh antara pengetahuan pekerja tambang tentang keselamatan dan kesehatan kerja dengan frekuensi kecelakaan kerja pada penambangan emas rakyat di Kenagarian Palangki Kecamatan IV Nagari Kabupaten Sijunjung. Penelitian ini bersifat deskriptif dengan menggunakan analisis regresi linear berganda. Hasil penelitian menunjukkan “terdapat pengaruh yang signifikan antara variable X1, X2 dan X3 secara bersama-sama terhadap Variabel Y”. Variabel yang paling dominan dalam mempengaruhi variabel Y secara parsial adalah variabel X1 yaitu pengetahuan umum pekerja tambang tentang keselamatan dan kesehatan kerja. Artinya semakin baik tingkat pengetahuan pekerja tambang tentang keselamatan dan kesehatan kerja maka semakin rendah frekuensi kecelakaan kerja

KAJIAN TEKNIS PENINGKATAN PEROLEHAN CASSITERITE DENGAN MENGGUNAKAN PAN AMERICAN JIG CLEAN UP PADA UNIT KONSENTRASI TAMBANG BESAR OPEN PIT TB. 1.42 PEMALI PT. TIMAH (PERSERO), TBK Riri Ferdian; Bambang Heriyadi; Rijal Abdullah
Journals Mining Engineering : Bina Tambang Vol 1, No 1 (2014): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

ABSTRACT The concentration units at Open Pit TB 1.42 Pemali is using Pan American Jig as its main equipment. There are two steps applied to the Pan American Jig; primary jig and clean up jig. At the clean up jig operational step, the final gain of cassiterite should get a serious attention. To obtain the cassiterite concentrate content as conditioned by Tin Ore Processing Center (PBBT) Pemali, that is 40% - 65% with 97% gain, there should be an analysis to the jig operation variables that are being used and analysis to the resulting product, so that a good suitability would be acquired in order to increase the cassiterite gain based on the operational standard in every clean up jig step. According to the sampling and the calculation of the final gain of cassiterite at clean up jig, the value of the right clean up jig is 96.82%, whereas the value of the left clean up jig is lower, 91.43%. The final concrete content were resulted as follow: the right clean up jig, compartment A 38.31% SnO2, compartment B 20.76% SnO2., compartment C 13.80% SnO2.Whereas,the left clean up jig, compartment A 49. 15% SnO2,compartment B 25.09% SnO2, compartment C 23. 43% SnO2. In order to increase the cassiterite gaining through clean up jig based on the requirement, that is 97%, which done by: first, change the setting of the compartment A, B and C hit length in a chronological order, 18mm, 10mm, and 6mm with push speed resulted at the three compartments 5.943cm/s, 3.302 cm/s, and 1.981 cm/s. Second, the management of horizontal crossflow with the characteristics and the jig feed rate. Third, the uniformity of bed jig shape and size, the placement of bed jig size should be adapted with the sequence of compartment and the jig steps. Fourth, arrange the entering feed pulp by installing feed combs grader flow at feed box.Key words: jig, pan american jig, cassiterite

Kajian Teknis Penentuan Geometri Peledakan Untuk Meningkatkan Nilai Perolehan hasil Peledakan CV. Triaga Nusatama (TNT), Desa Lareh Sago Halaban, Kabupaten Lima Puluh Kota, Sumatra Barat Gestio Sesar Yulindo; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 3, No 4 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. Mining activity conducted by CV Triagra Nusatama focused against drilling and blasting. Based on observations and measurements in the field, the geometry of the actual current obtained by blasting fragmentation of rock blasting results size 40-80 cm of 35.41% (calculation of the Split Desktop). Next do the draft geometry blasting to distribution fragmentation optimalisation blasting with a formula of r. l. Ash, ICI-Explosive and the combination of ICI-Explosive formula with adjustments to the conditions of the field. Based on the results of the calculation formula of using fragmentation Kuz-Ram, then the selected geometry proposed blasting II because when viewed from the use of the powder factor and the volume of rock that dismantled proposal II more economical than actual and proposed I, and the results of the fragmentation size 40–80 cm larger generated or the result is desired by the target company. And when compared with geometry proposal III, on geometry III there is a difference of use of explosives fewer, larger volume that is blown, and the resulting fragmentation size 40 – 80 cm larger, but the difference in results the fragmentation size 40–80 cm only 7.07 m3 of proposal IIKeywords: Blasting, Powder factor, Sliding Rock, Stockpile, Zig-zag Pattern

ANALISIS STABILITAS LERENG PADA PIT TAMBANG AIR LAYA BARAT SECTION C-C’ PT BUKIT ASAM (PERSERO) TBK., SUMATERA SELATAN M Adli Fikri; Bambang Heriyadi; Heri Prabowo
Journals Mining Engineering : Bina Tambang Vol 3, No 2 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Mining is an activity that starts from the general investigation activities of minerals and coal. Mineral and coal mining activities in open space in the form of excavation and stockpiling will always face the problems of slope stability. Slope stability is a vital factor in the planning and operation of open pit and quarry mines. The occurrence of landslide in cross section of C-C' pit of Tambang Air Laya Barat of PT Bukit Asam (Persero) Tbk. causes this analysis to be done.This research is applied research with quantitative method. Slope stability analysis is assisted by Geostudio 2018 Slope/W trial licence 30 days version. The analysis of safety factor was done by Janbu Method. The data used are secondary data consisting of physical and mechanical parameter data of soil and rock, data of type and condition of soil and rock layout, design of mining pit plan, cross section of pit mining data, and data value of regional seismic constant.The results showed that the lowest actual value of slope safety factor was in the overall slope of low wall elevation +65 to -21 ie 0.966. Based on the analysis of data confidence increase, the overall slope on low wall is in unsafe condition, that is, single slope +57 to +13 with FK = 1.165, intermediate slope +65 to +14 with FK = 1.030, and overall slope of elevation +65 to -21 with value FK = 0.812 (FK <1.25). Based on back analysis, safety factor of single slope of +57 to +13 is 0.902, safety factor of intermediate slope is 0.747, safety factor of overall slope is 0.736. The most optimal of slope redesign recommendation is the forward-analysis method of the back-end analysis by the Hoek & Bray method. The slope recommendation is to change the geometry of the slope with the angle 19o to 11o and change the height from 85m to 76m. The single slope of the elevation +57 to +13 initially made only one single slope converted into three single slopes with each elevation +55 to +42, +42 to +29, +29 to +13.Keyword: slope stability analysis, safety factor, confidence level

Rancangan Geometri Peledakan Untuk Mencapai Target Fragmentasi Ideal Berdasarkan Nilai Blastibility Index Pada Tamka PT. Allied Indo Coal Jaya Kota Sawahlunto Syarif Hidayattullah; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 4, No 3 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. In blasting, the fragmentation of blasting results is influenced by the characteristics of rock masses, geological structures, groundwater, and others. Blastibility Index is a measurement of geological conditions and rock mass characteristics in blasting, in the measurement of blastibility index There are several parameters such as the rock mass description obtained RQD by 71,96% classified as a blocky rock, The joint mass description is classified as intermediate (space 0,1 m – 1 m), joint plane orientation (JPO) dip into face, specific grafity influence (25 x 2,68 - 50) obtained 17, hardness of 5,5. The blastibility index gained 51,25 with the 6,15 rock factor. In the lily chart is acquired geometry blasting design with a burden of 2,03m , spacing 2,85m, the dept of blast holes 6,09 m, PC 4,37 m, stemming 1,6 m, subdrilling 0,608 m, the explosives weight 17,994 kg/hole, powder factor 0,567 kg/m3. Actual fragmentation of the geometry design with the first lily chart is embraced by the software Splitdesktop 2.0 obtained a fragmentation size of 50 cm at 6,31%. Design of the second blasting geometry burden 2,337 m, space 3,272m, the depth of the blast hole 7,011 m, PC 5,375 m, stemming 1,635 m, explosive weight 20,715kg/hole, powder factor 0,43 kg/m3.

Analisis Korelasi Overbreak Terhadap Yield Zone Pada Area 601 Crusher Complex Tambang Bawah Tanah Grasberg Block Cave PT. Freeport Indonesia Zet Rahmadanil; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 4, No 1 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. PT. Freeport Indonesia uses two mining systems, namely open pit and underground mining. Underground mining generally uses the block caving method. One of the facilities built on the GBC underground mine is Crusher. The crushers used in the GBC underground mine area are Gyratory type crushers. This crusher is located at location 601 at the level of 2760-2700 masl. Based on the results of observations in the field, it was found that the frequent occurrence of differences in tunnel size between the design and actual field 601 complex crusher is a fix facility opened by blasting. In addition, over break causes a change in the depth of the zone that must be supported, so that an equation is needed which can be used to determine the depth of the zone that must be supported. In the correlation analysis, the highest overbreak was 24.84%. The resulting effect is that the overbreak increases, the yield zone also increases in depth, from the initial design 2,073 meters to 3,127 meters after overbreak. The equation obtained from the overbreak correlation and yield zone is Y = 9,6727X2 – 6,751X + 21,129. Where Y is the maximum overbreak percent value that can be secured by a buffer. Recommendation equation Y = 9,6727X2 – 6,751X + 21,129 as a new parameter in the geotech department to provide buffer recommendations. Keywords: Overbreak, Yield Zone, Geotechnical, Correlation, Underground Mining

Co-Authors Abdullah, MT, Dr. Rijal Adree Octova Ahmad Ridho Permana Akman Syarif Al Anhar Hardianto Aldo Surya Pratama Alfi Rahman Andi Asmunandar Andre Gustian Anita Sari Sundriya Annisa Hanim D Annisa Oktavianingsih Ansosry Ansosry Aprilian Susanto Argi Saputra Ari Ardila Ari Febrianda Bafnis Ariq Jibran Azhary Rahim Bagas Maulana Hasan Berryl Hannah Carles Trisis Caniago Dasri Husien Dewi Suryani Dhoni Syaputra Diky Canima Fadhlur Rohman febri yanda praja Febrian Syukra Febylina Valencia Agustina Rumwaropen Fedi Fedi Fuzi Atiiqah Gary Aprio Gestio Sesar Yulindo Heri Prabowo Ilep Prengki Insani Sabilillah Jeremyes A.P Jualifa Pradisti Gayatri Jukepsa Andas Jukepsa Andas M Adli Fikri Muhammad Abbil Raihan Muhammad Deno Akbar Muhammad Fadillah Muhammad Irawan Multavich Multavich Mulya Gusman Murad Murad Naufal Deya Al Mafaza Mufti Nopi Kohirozi Noval Satria Novita Tria Putri Oktaviana Saputri Panji Kurnia Wiradani Rahmat Zulmy Refky Adi Nata Reno Putra Riki Rinaldo Riri Ferdian Rizaldi Rizaldi Rizka Sestiana Rizki Aldi Saputra Rizki Putri Bungo Rully Septian Sahmijar Sahmijar Sumarya Sumarya Suryadi Putra Syakinah Hasibuan Syarif Hidayattullah Teddi Triandana Tiwi Melisa Wahyu Eko Prasetianto Wahyu Kurniawan Wahyu Marta Novri Wahyudi Saputra Wuni Aprila Yolanda Noverista Yoszi Mingsi Anaperta Yudi Andrian Yunasril Yunasril Zet Rahmadanil Zhilal Darma

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