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Bina Tambang
Published by Universitas Negeri Padang
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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.
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Articles 528 Documents
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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
Bina Tambang Vol 6, No 5 (2021): Journals Mining Engineering: Jurnal Bina Tambang
Publisher : Jurusan Teknik Pertambangan FT UNP

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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
Kajian Teknis Sistem Mine Dewatering dalam Upaya Pencegahan Genangan Air di Area Penambangan Pada Tambang Batubara Bawah Tanah Seam C2 Site Sapan Dalam PT Nusa Alam Lestari, Desa Salak, Kecamatan Talawi, Kota Sawahlunto Nurdiani Fauziah; Rusli HAR
Bina Tambang Vol 6, No 5 (2021): Journals Mining Engineering: Jurnal Bina Tambang
Publisher : Jurusan Teknik Pertambangan FT UNP

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At the research site, the problem that often occurs is the entry of water into the mining front. The water comes from ground water flowing through the fractures. Therefore, a mine drainage system is needed to support mining activities. At the mining site SD-C2 Lori 1 has 4 control tanks, where the pumping system is carried out by flowing water from the mining area to the control tank until the next control tank reaches the main sump. Based on data analysis, it can be concluded that the study site has an intensive fracture structure with a secondary permeability value of 10-2 with a free discharge classification. Groundwater discharge in all fractures is 10,32 m3/day. Based on the specifications of the existing pump, it should be able to compensate for the incoming water discharge, but because the head of the pump is greater than the maximum head of the pump in control tank 1 to control tank 2, the pump is unable to drain water properly until control tank 2. In addition, the number of control tanks with a total dimension of 9.5 m3 has not balanced the daily incoming water discharge with a total discharge of 10.32 m3/day, so it is recommended to add 1 control tank with dimensions of not less than 0.82 m3.
Studi Karakteristik Mineral Pirit pada Seam Batubara A2 dan C Di Pit 1 Utara Penambangan Banko Barat PT. Bukit Asam, Tbk, Tanjung Enim, Sumatera Selatan aufa fikri abdillah; ansosry ansosry; heri prabowo
Bina Tambang Vol 6, No 5 (2021): Journals Mining Engineering: Jurnal Bina Tambang
Publisher : Jurusan Teknik Pertambangan FT UNP

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PT. Bukit Asam, Tbk is a coal mining company in South Sumatera Province that supplies coal from Steam Power Plant (PLTU) with domestic shipments to Tarahan Steam Power Plant (PLTU) reaching 39.7% of coal production. The purpose of this research is to determine the potential characteristics of pyrite minerals that produce sulfur dioxide gas (SO2) which affects coal combustion and it can form an encrustation or slag in the steam power plant (PLTU) boiler pipes. The results of the XRF analysis for coal of A2 seam detected the oxidation of sulfur SO3 is 41.28% and Fe is 17.908% and XRF detected the oxidation of sulfur SO3 is 75.838% and Fe 8.026% for coal of C seam. Based on the results of microscopic analysis on coal of A2 seam and C seams, there are different of pyrite minerals types analysed. According to the analysis on coal of A2 seam that it contained an epigenetic pyrite mineral type. Mineragraphic analysis on coal of seam C that it contained a sygenetic pyrite mineral type. the framboidal pyrite mineral has fine crystals so it is reactable quickly and it is predicted that it can cause a slag during coal combustion in steam power plants (PLTU).
EVALUASI KINERJA DAN PRODUKTIVITAS BWE 203 DAN BELT CONVEYOR PADA PENGGALIAN DAN PENGANGKUTAN BATUBARA DALAM UPAYA MENCAPAI TARGET PRODUKSI PIT MUARA TIGA BESAR UTARA (MTBU) DI PT. BUKIT ASAM, TBK UNIT PERTAMBANGAN TANJUNG ENIM (UPTE) KABUPATEN MUARA ENIM PROVINSI SUMATERA SELATAN Ardhi Jafrian; Adree Octova
Bina Tambang Vol 6, No 5 (2021): Journals Mining Engineering: Jurnal Bina Tambang
Publisher : Jurusan Teknik Pertambangan FT UNP

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Abstract. PT Bukit Asam, Tbk. Tanjung Enim Mining Unit is a State Owned Enterprise (BUMN) engaged in the coal mining industry. The mining system applied is an open pit mining system with two mining methods, namely the Shovel and Truck method (coventional mining), and the Bucket Wheel Excavator System (continuous mining) method. The coal production target set by PTBA was 230,872 tons in January. The mechanical tools used are 1 (one) unit of Bucket Wheel Excavator, 1 (one) Belt Wagon unit, 1 (one) unit of Cable Rair Car, 1 (one) Hooper Car unit and 1 (one) Tripper Car unit. With the use of the above tools, the production target produced was not achieved in January. So in this study a solution will be sought so that the coal production target set can be increased and can be fulfilled in January. The factors that can influence the production of loading and transport activities are as follows: fill factor, bucket wheel rotation time, number of spills, time of obstacle and work efficiency. From the observations, the time taken for one round of the bucket wheel is 10.10 seconds so that the value of the spill in 1 minute is 83 times. With work efficiency of 26.85% in January, the achievement of production was 186,500.37. In order for production to be improved, efforts need to be made to improve work efficiency by minimizing the obstacles that occur in the field. So that we get 34.14% work efficiency in January with an achievement of 237,136.78 tons. Keywords: BWE, Productivity, Target
Analisis Kelayakan Investasi Menggunakan Metode Discounted Cash Flow pada Tambang Timah PT. Timah Tbk site TK Gemuruh Kecamatan Muntok, Kabupaten Bangka Barat, Kepulauan Bangka Belitung cahaya permai hutahayan; Yoszi M Anaperta
Bina Tambang Vol 6, No 5 (2021): Journals Mining Engineering: Jurnal Bina Tambang
Publisher : Jurusan Teknik Pertambangan FT UNP

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PT.Timah Tbk is a company that plans to mine lead with an IUP area of 235.692  HA in Bangka Belitung Province. In Muntok District, Bangka Barat Regency, The total reserves are 151 tons with a selling price of IDR 383.980.000 / ton which is estimated to have a mining life of 3 years. This study aims to analyze the feasibility of investing in lead mining in terms of technical, economic aspects, using the discounted cash flow (DCF) feasibility analysis method to see whether a mine with lead production is feasible or not. The results of this study, obtained cash out flow of IDR 20,482,692,562  and cash in flow of IDR 57,215,275,883. Based on the discounted cash flow (DCF) method, the NPV results were IDR 20,023,236,285  an IRR of 15%, PBP for 1 years and a PI of 4,8.
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
Bina Tambang Vol 6, No 5 (2021): Journals Mining Engineering: Jurnal Bina Tambang
Publisher : Jurusan Teknik Pertambangan FT UNP

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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 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
Bina Tambang Vol 6, No 5 (2021): Journals Mining Engineering: Jurnal Bina Tambang
Publisher : Jurusan Teknik Pertambangan FT UNP

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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.
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
Bina Tambang Vol 6, No 5 (2021): Journals Mining Engineering: Jurnal Bina Tambang
Publisher : Jurusan Teknik Pertambangan FT UNP

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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. 
Desain Pit Penambangan Lapisan Batubara Seam C pada Pit X PT. Bukit Asam Tbk. Nabilla Kansha; Dedi Yulhendra
Bina Tambang Vol 6, No 5 (2021): Journals Mining Engineering: Jurnal Bina Tambang
Publisher : Jurusan Teknik Pertambangan FT UNP

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Abstract. Based on the Decree of the Minister of Energy and Mineral Resources No. 1827K concerning Guidelines for the Implementation of Good Mining Rules, states that every mining company is required to report a management plan for the remaining reserves in its territory as part of conservation. One of the conservation efforts is to carry out mining of unmined reserves. This can be used to achieve the effectiveness and efficiency of the desired target. This also helps to maintain the availability of coal when certain qualities cannot be met by PT Bukit Asam Tbk. Mining operations basically require design and economic studies to get optimal results. Based on the study that has been carried out, the seam c coal seam in pit 1 north of Banko Barat has the potential to be optimized which produces a coal volume of around 442,769.68 tons with a stripping ratio of 2.9. Based on the study of Break even stripping ratio (BESR), the result is 15.7 with an economical SR of 9.76, it can be concluded that the design that has been designed is feasible to mine because it does not exceed the economical SR.
Analisis Perhitungan Debit Air Tanah pada Sistem Penyaliran Tambang Terbuka di Pit X PT. Bukit Asam Tbk., Kabupaten Muara Enim, Provinsi Sumatera Selatan Trio Mei Kristin Zendrato; Rusli HAR
Bina Tambang Vol 6, No 5 (2021): Journals Mining Engineering: Jurnal Bina Tambang
Publisher : Jurusan Teknik Pertambangan FT UNP

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The existence of ground water is very dependent on the amount of rainfall and the amount of water that can seep into the ground. Other influencing factors are lithological conditions (rocks) and local geology. Loose sandy soil conditions or rocks with high permeability will facilitate the infiltration of rainwater into rock formations. On the other hand, rocks with strong and compact cementation have the ability to absorb small amounts of water. The problem of water entering the mine site and flooding the mining site is a very important problem for the company. This is because water entering the mining site can interfere with mining activities and result in production delays for the company in achieving the production targets that have been set, so that if this happens, the company will experience losses both materially and time. From the results of the analysis of the calculation of groundwater discharge with the determination of the value of K (hydraulic conductivity), the total groundwater discharge that enters the pit is 10,049 m3/second, 602,94 m3/minute, 36.176,4  m3/hour or 868.233,6 m3/day.

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