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Journals Mining Engineering : Bina Tambang

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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.

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Articles 609 Documents

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Rancangan Penambangan Pit SR4 Pada PT. Manggala Usaha Manunggal Jobsite Bara Anugrah Sejahtera, Kabupaten Muara Enim, Provinsi Sumatera Selatan Teguh J Alkausar; Murad Murad
Journals Mining Engineering : Bina Tambang Vol 5, No 1 (2020): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. PT. Manggala Usaha Manunggal is a mining contractor company that is trusted to carry out coal mining activities by PT. Bara Anugrah Sejahtera in Pulau Pulau Village, Tanjung Agung Subdistrict, Darmo Village, and Keban Agung Village, Lawang Kidul District, Muara Enim Regency, South of Sumatra Province. PT. Manggala Usaha Manunggal uses the open mining method. The pit design was designed using Minescape Software 5.7. The results of pit reserves design in October 2019 were 1,225,796,571 BCM for overburden and 332,435,323 tons for coal with SR 1: 3,7. In November 2019 overburden was peeled at 1,225,026,887 and coal was mined at 322,769,945 tons with SR 1: 3,8. Whereas in December 2019 overburden was peeled at 1,238,004.473 and mined coal was 303,088.444 tons with SR 1: 4.1. Main mining equipment fleet allocation for October 2019 there are 5 fleets for overburden removal and 2 fleets for coal getting. In November 2019 there were 7 fleets for overburden removal and 3 fleets for coal getting consisting of 2 units Doosan DX700LC excavator and 1 unit Volvo EC480D excavator serve 18 units of Mitsubishi FUSO / HINO FM. In December 2019 there were 7 fleets for overburden removal and 2 fleets for coal getting.Keywords: Design Pit, Overburden, Batubara, Minescape 5.7, Fleet, Stripping Ratio

Job Safety Analysis Sebagai Penerapan Kesadaran Keselamatan dan Kesehatan Kerja Pada PT. Mega Sejahtera Sugan Di Jorong Sopang, Kecamatan Pangkalan Koto Baru, Kabupaten Lima Puluh Kota, Sumatera Barat Luthfiandy Ramadhana; Rijal Abdullah
Journals Mining Engineering : Bina Tambang Vol 5, No 2 (2020): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. PT. Mega Sejahtera Sugan as one of the companies engaged in mining, is trying to capture the gaps in community needs that will support physical development activities carried out by the government. Estimated occurrence of work accidents at PT. Mega Sejahtera Sugan is the existence of rules about Occupational Safety and Health (K3) that have not been implemented properly. Awareness of employees in working that meets the Occupational Safety and Health (K3) method has not been achieved, for example the use of personal protective equipment (PPE) at work, Some methods in recognizing potential dangers of underground mining such as Job Safety Analysis have not been realized at PT. Mega Sejahtera Sugan. Some of the dangers in the mining environment are hot temperatures, lots of wildlife, watery roads, and no use of personal protective equipment. In controlling hazards some policies and guidelines are needed in the execution of work. The preparation of the Standard Operating Procedure is carried out by observing work processes directly so that each stage is able to be identified and identified the dangers. Standard Operating Procedure is made in writing and informed to all employees to comply with each stage of work and the policy.Keywords: Pengetahuan Karyawan, Sikap , Tindakan, Job Safety Analysis, Standard Operating Procedure

Analisis Debit Air Limpasan Di Permukaan (Run Off) Pada Das Batang Kandih Dan Das Air Dingin Sebagai Penyebab Terjadinya Genangan Di Kota Padang Hero Willy Ikhsan Ordheo; Rusli HAR
Journals Mining Engineering : Bina Tambang Vol 5, No 1 (2020): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract.The Purpose of this study is to calculate rainwater discharge into the groundthrough the infiltration process and water discharge that become a inundation on thesurface, when it rains highest in on the DAS Batang Kandih and DAS Air Dingin. DAS AirDingin has an infiltration rate of around 0,10852 cm/minutes and the value of infiltration inthe DAS Air Dingin is 65.402,5331 m3/hour/km2 with catchment area 20.844 km2 and soilcatchment area on the DAS Air Dingin very low with time around 0,1 to 0,2 per minutes.Meanwhile infiltration rate on the DAS Batang Kandih is 0,128 cm/minutes and the value ofinfiltration in the study area is 76.775,58 m3/hour/km2. Form the result of this study theinfiltration value in this area as very small because it enters the VI/E zone. Calculation ofaverage daily maximum rainfall using Polygon Thiessen Method is 163,359 mm/day with areturn period of 25 years of rainfall is 277,005 mm/day. Rain intensity at DAS Air Dingin is32,760 hours and rain intensity at DAS batang Kandih is 32,935 hours. calculation of runoff discharge value at DAS Air Dingin is 811,370 m3/seconds and calculation of run offdischarge value at DAS Batang Kandih is 863,188 m3/seconds.Keywords:infiltration, rainfall, rainfall return period, rain intensity, run off

Membangun Kemampuan Berfikir Kritis Peserta Didik Dalam Pembelajaran IPA SMP Melalui Lesson Study Berbasis MGMP Amali Putra; Yurnetti Yurnetti; Rizanur Hasnina
Journals Mining Engineering : Bina Tambang Vol 4, No 4 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract – In order to build students' critical thinking skills through increasing the professionalism of teachers gathered in Payakumbuh MGMP IPA, activities in the form of Community Partnership Programs have been carried out with training and practice of Lesson Study activities from 7 September to 12 October 2019 with 3 activities, namely: The essence of critical thinking capability socialization, training in the application of science learning with scientific approaches, and the socialization and implementation of lesson study activities. Based on obtained data during and at the end of the activity concluded that by training the application of a scientific approach through the activity of lesson study was able to build a learning community of teachers in the MGMP IPA Middle School, in Payakumbuh which is indicated by the increasing quality of teacher perceptions of science learning, scientific approach and lesson study. The observations also showed a change in the ability to think critically and student learning outcomes for the betterKeywords : learning science, scientific approach, critical thinking skills, lesson study

Analisis Kestabilan Lubang Bukaan Dengan Pengujian Flat Jack Pada Dinding Tunnel 1 Tambang Bawah Tanah PT Allied Indo Coal Jaya, Sawahlunto Mhd Hafiz Diska; Murad Murad
Journals Mining Engineering : Bina Tambang Vol 5, No 2 (2020): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. Geomechanical testing is very important in the mining industry, both open pit, and underground mining. Geomechanics testing aims to determine rock strength. Rock strength is a major determinant of slope stability in open mines or opening holes in underground mines. There are several geomechanical testing methods, based on their nature, geomechanical testing consists of non-destructive tests and destructive tests. Based on location, geomechanical testing consists of in situ tests and ex-situ tests. One example of in situ and non-destructive testing is flat jack testing. The flat jack method is a method based on the measurement of the pressure needed to restore the stress released. Flat Jack generates known stresses in rock mass. Flat jack testing is carried out on the underground mine wall to get the stress value. Based on the calculation of the safety factor of the underground mine of PT Allied Indo Coal Jaya, at location 1 the values of fk = 1.41 (tensile stress) and fk = 1.89 (compressive stress) are obtained. At location 2 the value of fk = 1.23 (tensile stress) and fk = 1.63 (compressive stress). At location 3 the value of fk = 1.23 (tensile stress) and fk = 1.63 (compressive stress).Keywords: Flat Jack, Geotechnical, Rock Stress, Safety Factor, Underground Mining.

Analisis Penentuan Batas Aman Ground Vibration Akibat Kegiatan Peledakan Terhadap Kestabilan Lereng Highwall Penambangan Pit 13 West PT. Multi Harapan Utama, Samarinda, Kalimantan Timur Diky Canima; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 4, No 4 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. Blasting activity is an activity that aims to destroy the rock that is not able to diripping, but as a result of blasting activities will cause vibrations that disturb the surrounding environment including slope stability. After opsevation and processing the data it obtained the actual value of the safety factor (SF) in March at 2.204 dry conditions, the condition of half saturated 1,793 and 1.386 water saturated conditions. SF that influenced most Amaks ie 0.0267 g with the value of the safety factor under dry conditions 2.114; 1.716 half-saturated conditions; and 1.324 water saturated conditions. Next to find out the value determination of ground vibration safe limits due to blasting activities for slope stability, vibration testing was carried out with the result Amaks 0.398 g FK value of 1.279 in dry conditions with 2 meters, Amaks 0.216 g FK value 1.2284 half-saturated conditions with a distance of 4 meters, Amaks 0.0357 g value FK 1.303 saturated conditions with a distance of 6 meters. Furthermore, this value is used as a recommended value for vibration safe limits due to blasting of slope stability.

Estimasi Biaya dan Evaluasi Kebutuhan Alat Muat dan Alat Angkut Terhadap Efisiensi Penambangan Batubara pada Tambang Terbuka PT. Allied Indo Coal Jaya, Sawahlunto Nurul Anisa Ardianti; Heri Prabowo
Journals Mining Engineering : Bina Tambang Vol 5, No 2 (2020): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. Coal is an important energy source as a substitute for oil and gas fuels. Along with the increasing demand for coal, especially for steam power plants (PLTU) and for other industries, there has been an increase in coal production. An increase in the value of the dollar exchange rate against the value of rupiah reaching Rp. 14.091/$ USD throughout 2019 based on CNBC Indonesia and with falling coal prices in the world market calculated based on the average by ICI only 66,27 USD/ton, impacting coal mining companies in the world as well as PT. Allied Indo Coal Jaya. The importance of operating costs, owning costs and evaluating the need for loading and transporting equipment on production is certainly related to mining costs and the investment value to be incurred by the company and the production targets to be achieved by company. The relationship between production targets and the ability to produce equipment will determine the efficiency of operating costs and the cost of ownership and investment costs of equipment. With the NPV and IRR methods we can find out the feasibility of investing in loading and transporting equipment in relation to work efficiency and in the use of loading and transporting equipment used to meet these targets.Keywords: Effective Utilization, Operating cost, Owning cost, Net Present Value, Internal Rate Return

PERENCANAAN REKLAMASI LAHAN BEKAS PENAMBANGAN PIT D1 PT. AMAN TOEBILLAH PUTRA SITE LAHAT SUMATERA SELATAN Eka Retno Sari; Ansosry Ansosry; Heri Prabowo
Journals Mining Engineering : Bina Tambang Vol 2, No 1 (2015): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

The steps of the mining activities in PT. Aman Putra Toebillah includes the activities of land clearing, stripping the ground cover, the exploitation of coal, transporting, processing and marketing of coal. After the mining is finished, the ex of mining area will leave an opening hole. Therefore any company of mine obligatory to implement reclamation of ex mining area to maintain environmental sustainability. Based on Ministerial Regulation Number 7 Year 2014, reclamation are activities during of mining to organize, restore, and improve the quality of the environment and the ecosystem to the function. Therefore, it takes a good planning, so the rate reclamation success can be realized.Mining avtivities include the arrangement of land reclamation. The Inpit Dump will be covered with land cover. Then on the top layer is covered with top soil as a medium growing plants. After the arrangement is finished then the Inpit Dump will be replanting (revegetation). To prevent the erosion, we made waterways, do care and give limes to settling pond to prevent the formation of acid mine water.Based on calculations of planning reclamation and revegetation, direct costs for reclamation activities and revegetation on the Pit D1 PT. Aman Toebillah Putra amount to Rp RP 14.104.226.892,00 and indirect costs amount to Rp 1.339.901.555,00. Then the total cost of reclamation and revegetation on the site amount to Rp 15.444.128.447,00.

Estimasi Sumberdaya Batubara Menggunakan Metode Penampang dan Geostatistik Pada Area DDU Blok Timur Site Sungai Cuka, Kecamatan Kintap, Kabupaten Tanah Laut, Provinsi Kalimantan Selatan Byma Bryanco; Dedi Yulhendra; Adree Octova
Journals Mining Engineering : Bina Tambang Vol 3, No 4 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. PT. Britmindo is one of mining consultant company, and the centre office in Ragunan, South Jakarta. As aconsultant PT. Britmindo have a client is PT. Indoasia Cemerlang located in Sungai Cuka, Kintap, Region Tanah Laut, Province South Kalimantan. PT. Indoasia Cemerlang do exploration of coal in DDU Area East Block event have 27 bor hole. In this located didn’t do estimation coal of resources. And after do that can be know totality of tonnges and modle. Resources estimation is using two methods; there are ordinary kriging method and cross section method. Ordinary kriging method used if the thickness is unknown, and then to estimate the thickness number from an unknown block vertically or horizontally. The estimation result by using kriging method will configure modl from sediment and the total tonnage of coal.In located of research have 1 seam and that is seam A with split is A, A1, and A2. And total Estimation in cross section method in seam A is 60.979 tons coal tonnage, seam A1 is 21.236 tons coal tonnage, and seam A2 is 37.159 tons coal tonnage. With overburden from topo-top seam A is 77.103 bcm/tonne and interburden seam A2 is 48.414 bcm/tonne. Meanwhile in ordinary kriging method has a total tonnages in seam A is 499.590 tons coal tonnage, seam A1 is 244.530 tons coal tonnage, and seam A2 is 204.750 tons coal tonnage. And from this calculation we have length, volume and tonnages of coal.Keywords: coal, cross section, ordinary kriging, block model, resources

Optimalisasi Pit Limit Penambangan Mineral Nikel Laterit PT ANTAM Tbk. Unit Bisnis Penambangan Nikel Di Site Pomalaa Sulawesi Tenggara Di Front X Fitratul Rahmi; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 4, No 3 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. Take into account mining optimization by taking into account the NPV value as the main reference factor of the Ultimate Pit Limite (UPL) that is used based on the division of levels obtained by comparing the sale value or the Net Present Value (NPV) of the Laterite Nickel Laterit. Inverse Distance Weighting (IDW) Method. This method is an interpretation method with a simple block model approach by considering the surrounding points. The mining method that will be planned on Front X is an open pit method with a multi-tiered system. At PT ANTAM Tbk. UBPN Sultra makes block model based on division of levels which differentiates each zone. At Ni level <1.3 the layer is classified as waste or called top soil, Ni level <1.5 layer is still called waste or limonite while for the value of Ni level> 1.5 is called ore or saprolite The calculation of the Lerchs Grossmann dimension algorithm is basically the sum of costs and cumulative income in the pit limit. The modeling and calculation of the Grossmann Learch Method can be planned for a more optimal pit shape and in accordance with a more economical mining price. This method is far more complicated and the risk of human error is high to determine which pit is effective. This method considers all aspects.Keyword: Pit, Ultimate Pit Limit, Net Present Value (NPV), Nikel Laterit, Blok Model

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