Garuda - Garba Rujukan Digital

p-Index From 2021 - 2026

4.997

P-Index

This Author published in this journals

All Journal Journals Mining Engineering : Bina Tambang Journal of Degraded and Mining Lands Management JURNAL PENDIDIKAN TAMBUSAI Jurnal Teknologi Informasi dan Pendidikan Prosiding Temu Profesi Tahunan PERHAPI MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Prosiding Seminar Teknologi Kebumian dan Kelautan (SEMITAN

Dedi Yulhendra

Universitas Negeri Padang

Author-ID : 1140342

Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Engineering Industrial & Manufacturing Engineering Social Sciences

Published : 84 Documents Claim Missing Document

Claim Missing Document

Articles

1 2 3 4 5

Desain Pit Penambangan Lapisan Batubara Seam C pada Pit X PT. Bukit Asam Tbk. Nabilla Kansha; 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.v6i5.115171

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.

Redesain Rancangan Ultimate Pit Dengan Menggunakan Software Minescape 4.118 Di Pit S41 PT. Energi Batu Hitam Kecamatan Muara Lawa & Siluq Ngurai, Kabupaten Kutai Barat, Kalimantan Timur Devit Aswandi; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 4, No 1 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. The research was conducted at PT. Energi Batu Hitam in Muara Lawa and Siluq Ngurai, West Kutai, East Kalimantan. Currently the company has compiled a pit design with SR 1: 22 parameters which are assisted by a consultant PT. Runge Indonesia, the rest is the selling price of coal which is not yet in line with current coal prices. The ultimate pit design alternative is needed in accordance with the economic prices so that alternative alternatives in some SR scenarios are 15, 17 and 20. Based on the geotechnical recommendations from PT.EBH, the planned single slope geometry is a 10 meter level height, 650 slope for sidewall and highwall and 300 slope for lowwall. The width of the slope is 5 meters with an overall slope of 450. The measured results of the calculation are 1.949.132,91 tons of coal, in the SR 15 pit area 9.92 Ha obtained reserves of 84.075, 13 tons of coal and overburden volume 1.270,539,44 Bcm, on SR 17 the pit area was 15,04 Ha and mine reserves were 138.966,26 tons and overburden volume was 2.387.242,30 Bcm, on SR 20 the pit area was 24,87 Ha, and mine reserves were 291.314,81 tons and overburden volume 5.867.208,26 Bcm.Keywords: Pit Limit, Slope geometry, reserves, Stripping Ratio, Slope

Analisis Orientasi Kekar terhadap Fragmentasi Batuan Hasil Peledakan di PT. Semen Padang Muhammad Aditya Faisal; Dedi Yulhendra
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.v6i1.111201

PT Semen Padang is a State-Owned Enterprise (SOE) engaged in the production of limestone located in Padang, West Sumatra. The mining system implemented at PT Semen Padang is an open pit system using quarry method. Mining activities begin with the process of drilling, blasting, loading and hauling, crushing and conveying. The size of the blasting rocks required by the company is < 80 cm. After analysis of blasting data using RL theory. Ash and The modern technique of rock blasting then obtained the geometry of the RL. Ash with Burden 4.7 m and , Spacing 5.9 m, Hole depth 11.4 m, subdrilling 1.4 m, stemming 3.3 m, and fill column length 8.1 m. Geometry proposed by the method Of Modern Technique of Rock Blasting namely Burden 5 m, Spacing 6.25 m, Hole depth 11.12 m, subdrilling 1.6 m, stemming 5 m, and fill column length 12.2 With a diameter of 5 inches. This study seeks to reduce weighting from one of the parameters in the weighting Blastibility Index Parameters, namely Joint Plane Orientation. There are two parameters in the Joint Plane Orientation, namely the general direction of stocky and the direction of freeface. The general direction of the stocky is a parameter that can not be controlled by humans, but the direction of freeface is a parameter that can be controlled so that if the direction of freeface is changed then the condition of the Joint Plane Orientation changes. The results of the analysis obtained for the application of freeface direction N202oE or N22oE produces material size < 80cm as much as 92.26% and for the direction of freeface N292oE produces material with size < 80 cm as much as 95.63%.

OPTIMASI GEOMETRI PELEDAKAN UNTUK MENCAPAI TARGET FRAGMENTASI DAN DIGGABILITY DALAM PEMENUHAN TARGET PRODUKTIVITAS ORE DI PIT DURIAN BARAT DAN PIT SOUTH OSELA SITE BAKAN PT J RESOURCES BOLAANG MONGONDOW SULAWESI UTARA Milia Putri; Dedi Yulhendra; Adree Octova
Journals Mining Engineering : Bina Tambang Vol 3, No 1 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Pemberaian batuan merupakan salah satu tahapan yang sangat penting dalam operasipenambangan. Metode pemberaian batuan yang umum digunakan adalah peledakan yang bertujuanuntuk memberai batuan sesuai ukuran fragmentasi yang telah direncanakan. Keefektifan kegiatanpeledakan menjadi salah satu tolak ukur keberhasilan kegiatan pemuatan (loading material) yangsangat mempengaruhi ketercapaian target produktivitas penambangan. Penelitian ini bertujuanuntuk mengestimasi geometri peledakan optimum untuk meminimalisir persentase jumlah bouldersehingga kegiatan pemuatan (loading material) menjadi lebih efektif dan target produktivitastercapai. Studi kasus penelitian dilakukan pada 8 blok peledakan di Pit Durian Barat dan 8 blokpeledakan di Pit South Osela yang keduanya berada di PT J Resources Bolaang MongondowSulawesi Utara Indonesia. Data penelitian terdiri dari fragmentasi peledakan, digging time, cycletime, digging rate, dan produktivitas penambangan ore. Metode penelitian dilakukan denganestimasi geometri peledakan menurut teori R.L. Ash dan C.J. Konya, pemodelan statistik, serta ujitrial and error. Dari analisis data yang dilakukan, untuk mencapai target produktivitaspenambangan sebesar 700 bcm/jam maka persentase jumlah boulder adalah 3 %, digging time 7detik, cycle time 15 detik, dan digging rate 750 bcm/jam pada Pit Durian Barat, sementara padaPit South Osela persentase jumlah boulder 3 %, digging time 6 detik, cycle time 14 detik, dandigging rate 800 bcm/jam. Untuk meminimalisir persentase jumlah boulder maka perlu dilakukanrevisi geometri peledakan berdasarkan teori C.J. Konya dengan reduksi ukuran boulder sebesar4,26 s.d. 5,10 % dengan peningkatan produktivitas sebesar 141 s.d. 215 bcm/jam, dengan demikiantarget produktivitas ore dapat tercapai.

Estimasi Sumberdaya Terukur Batukapur pada Area Bukit Tajarang dengan Menggunakan Metode Indicator Krigging di Tambang Quary PT. Semen Padang, Sumatera Barat Mhd Zanil; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 5, No 2 (2020): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. PT. Semen Padang is located in Indarung Village, Lubuk Kilangan Subdistrict which is 14 KM from the center of Padang City with a height of + 200 m above sea level is one of the companies engaged in the cement industry. Reserve calculation is an important work, the responsibility is in evaluating a mining project. All technical decisions are very dependent on the work. In this study, calcareous reserves will be calculated based on the cut-off grade of each material. In each of these materials there are levels of SiO2, Al2O3, CaO and MgO. In calculating the limestone reserves contained in the Tajarang Hill area, this was done using geostatistical techniques. This geostatistics uses the estimation method while still based on the model. The method that will be used in geostatistics is the indicator krigging method. The IK estimation method does not use the assumption of a normal (free) distribution, and still takes into account the outlier (high levels), so that it can be applied to the estimation of limestone reserves. The IK method is based on the concept of probability. Data is converted into indicators with zero (0) and one (1) value relative to a limit level (discriminator). The purpose of the IK assessment is to estimate the probability at various levels of a predetermined limit. From the results of calculation of limestone resources using the krigging indicator method based on the cut-off grade of PT. Semen Padang obtained the amount of limestone resources of 36,764,700 m 3 or 97,426,455 tonsKeywords: Reserve calculation, cut off grade, geostatistics, indicator krigging, and probabilistic

ESTIMASI SUMBERDAYA BATUBARA TERUKUR DI BLOK TIMUR IUP PT. SAROLANGUN PRIMA COAL, KABUPATEN SAROLANGUN, JAMBI Icksan Lingga Pradana; Raimon Kopa; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 1, No 1 (2014): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

ABSTRAKDaerah penelitian adalah Blok timur Wilayah Izin Usaha Pertambangan PT.Sarolangun Prima Coal dengan luas 1024 Ha. Metode yang digunakan untuk mengestimasi sumberdaya batubara di daerah penelitian adalah metode Cross Section dengan pedoman perubahan bertahap (Rule of Gradual Change) dan dengan pedoman titik terdekat (Rule of Nearest Point). Prinsip dari metode Cross Section Rule of Gradual Change, yaitu dengan menghubungkan titik pengamatan terluar, endapan batubara dianggap sama sepanjang garis lurus tehadap penghubung 2 (dua) titik. Sedangkan pada metode Cross Section Rule of Nearest Point, yaitu berpedoman pada titik terdekat, dengan membuat batas terluar endapan secara linear, panjang garis linear sama dengan batas blok, setengah jarak antara dua titik.Berdasarkan penaksiran sumberdaya batubara dengan menggunakan metode Cross Section dengan pedoman perubahan bertahap (rule of gradual change) dengan jarak antar sayatan 100 meter dan diperoleh sumberdaya batubara terukur (Measured Coal Resource) seam A dan seam B adalah sebesar 28.304.358,40 Ton. Volume overburden dan interburden yang didapatkan adalah sebesar 182.835.816 Bcm dengan Stripping Ratio(SR) 6 : 1. Metode Cross Section dengan pedoman titik terdekat (rule of nearest point) dengan jarak antar sayatan sebesar L1 50 meter dan L2 50 meter diperoleh sumberdaya batubara terukur (MeasuredCoal Resource) seam A dan seam B adalah sebesar 29.232.773,1 Ton, serta volume overburdendan interburden yang didapatkan adalah sebesar 189.104.302,6 Bcm. dengan Stripping Ratio(SR) 6 : 1.ABSTRACTThe research area is at the Region east block of Licensed Mining Company of PT. Sarolangun Prima Coal with area of 1024 Ha. The method being used to estimate the coal resource at the research area is Cross Section method with Rule of Gradual Change and with Rule of Nearest Point. The principle of Cross Section Rule of Gradual Change method is by relating the outermost observation points, the coal deposits considered to be the same throughout straight line connecting the two points. Whereas, at the Cross Section Rule of Nearest Point method, which is based on the nearest line, it is by making the outer boundary deposit linearly, where the length of the linear line is the same as the block boundary, it is a half distance between two points.Based on the coal estimation using Cross Section Rule of Gradual Change method with the distance between slices is 100 metres, the Measured Coal Resource of seam A and seam B is as big as 28.304.358,40 Tons. The acquisited overburden and the interburden volumes are as big as 182.835.816 Bcm with 6:1 Stripping Ratio (SR). Cross Section Rule of Nearest Point method where the distance between slices of L1 is 50 meters and L2 is 50 meters, a Measured Coal Resource of seam A and seam B can be acquisited as big as 29.232.773,1 Tons. The obtained overburden and interburden volumes are as big as 189.104.302,6 Bcm with 6:1 Stripping Ratio (SR)Kata kunci: Sumberdaya Batubara, Metode Cross section, Stripping Ratio

Kajian Pengaruh Kemiringan Jalan Angkut Terhadap Konsumsi Penggunaan Bahan Bakar Truck Pada Produksi Batubara Di Pit Barat Pt.Aic Jaya Kec.Talawi Sawahlunto Sumatera Barat Rian Saputra; Dedi Yulhendra
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.v6i2.111802

Abstract. Sawahlunto City is one of the areas that has very potential coal resources in West Sumatra and is very interesting to work on. PT. Allied Indo Coal Jaya is a company engaged in coal mining located in Parambah, Talawi District, Sawahlunto City, West Sumatra. PT.Allied Indo Coal Jaya carries out coal mining with underground and open pit mining systems. Coal mining with an open pit system includes land clearing, stripping of topsoil, removing topsoil for disposal, loading and transporting coal to stockpiles. . In the topsoil and coal acreage activities requiring mechanical devices, one of the mechanical devices used is the Hino FM 260 JD dump truck and the Caterpillar 320 D excavator. The use of transportation equipment as the main equipment in mining operations cannot run without fuel. High fuel prices can affect mining operating costs. Factors that influence the increase in fuel consumption are the slope, the distance traveled and the load. PT AIC is successful in planning the slope of the haul road with a grade of 9%, it turns out that in the field there are many haul road slopes obtained by researchers of more than 10%. Incorrect road slopes can affect fuel consumption, cycle time and conveyance productivity so that it can affect production.Keywords: Sawahlunto, Fuel Consumption, Coal Mining, Slope.

Analisa Investasi Pengadaan Alat Support Tambang (Bulldozer D8R) Untuk Efisiensi Kinerja Bulldozer D10T Pt Cipta Kridatama Job Site PT. Adimitra Baratama Nusantara, Sanga-Sanga, Kutai Kartanegara. Rijabul Mulia; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 4, No 1 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. During the excavation at the ABN site, PT CK was located in Kampung Jawa Village, Sanga-sanga District and Muara Kembang Village, Muara Jawa Subdistrict, Kutai Kartanegara District, East Kalimantan using a ripping unit with D10T bulldozer unit in breaking rocks. The purpose of ripping is to make the overburden material easier to dig by the loader and easy to haul by the conveyor. Looking at the open pit mining system where the Dozzer D10T is the main unit and is still used as a unit of support in achieving production targets, the authors "analyze investment procurement of mine support tools (Caterpillar D8R Bulldozer) for operational efficiency of Caterpillar D10T Bulldozer with IRR method" so that the D10T Dozzer unit designated as the main unit in production is not interrupted for support activities. Based on the results of observations in the field and data processing found D10T produces an IRR value of 75.47% by direct purchase, and 90.87% by leasing, at the value of NPV = 0. With the MARR value targeted by the company which is 16%, then investment this is declared feasible. Feasibility analysis for the D8R unit produces an IRR value of 154.83% by direct purchase, and 298.21% by leasing, at the value of NPV = 0. With the MARR value targeted by the company which is 16%, then the Invesatsi is declared feasible, and a leasing purchase system is highly recommended.Keywords: IRR, Ripping, Bulldozer, Analyze Investment, Operational Efficiency.

Evaluasi Teknis Geometri Peledakan untuk Mendapatkan Fragmentasi dan Identifikasi Tingkat Keseragaman Batuan Hasil Peledakan yang Ideal di PT. Allied Indo Coal Jaya, Kecamatan Talawi, Kota Sawahlunto Aulia Defriansyah; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 4, No 1 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. PT.Allied Indo Coal Jaya is a coal company located in Talawi District, Sawahlunto City. This company conducted the exploration by open pit and underground mining. In open pit mining, before the start of coal mining, overburden demolition is carried out first with blasting activities. Actual blasting geometry with explosive hole diameter 3inch, 2,873 m spacing, burden 2,8596 m, explosive hole depth 5,633 m, subdrilling 0,183 m, column length 2,979 m, stemming 2,655 m, level height 5,45 m and PF value 0,098 kg/m3. Percentage of rock fragmentation resulting from blasting on actual geometry using split desktop with fraction size ≥50 cm which is 35,17%, and the level of rock uniformity obtained is 2. Therefore, the author tries to propose blasting geometry so that the resulting fragmentation can meet the policies that have been made and the non-uniformity of the rock results can be better. The proposed geometry uses the ICI-Explosive formula with a 2,7 m space, 2,1 m burden, 5,4 m level height, 4,1 m column length, 1,9 m stemming, 0,6 m subdrilling, explosive hole depth 5 meters, and PF 0,20 kg/m3. Based on the geometry design, the proposed percentage of rock fragmentation results from the Kuz-Ram method with a fraction size of ≥50 cm which is 27,35%, while the percentage of rock fragmentation resulting from blasting uses split desktops with fraction ≥50 cm, 19,61%, and uniformity rock obtained is 1,23. Keywords: Overburden, Blasting, Fragmentation, Kuz-Ram Method, Split Desktop.

ANALISIS MENAJEMEN FLEET PADA KEGIATAN PENGUPASAN OVERBURDEN PT. ARTAMULIA TATAPRATAMA DI DESA TANJUNG BELIT, KECAMATAN JUJUHAN, KABUPATEN MUARO BUNGO Fadel Rahman; Sumarya Sumarya; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 3, No 2 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

PT.Artamulia Tatapratama is a company engaged in the field of coal mining. PT.Artamulia Tatapratama is located at Tanjung Belit Village, Jujuhan District, Muaro BungoRegency.In the overburden hauling process to the disposal area there is a dumptruk queue atsome point of the road and long stand by time on the loader, this can cause the loader andhauler productivity to be small so that the production target of 1.190.838 bcm / monthoverburden is not reached. This incompetence is due to a combination of unsuitable toolscausing the occurrence of a waiting gateway or a queue of loads when it is loaded by aloading device. One way to achieve the production targets is required appropriate fleetmanagement.Based on the theory of queue, the waiting time for the conveyance at the time will beloaded is 13.62 minutes on fleet 1, 22.88 minutes on fleet 2 and 14.58 minutes on fleet 3.Fleet setting based on the queue theory is 1 unit PC 1250 serving 6 units of HD 465 on fleet1, 1 unit PC 1250 serving 4 units of HD 465 on fleet 2, 1 unit PC 1250 serving 5 units of HD465 on fleet 3.

Co-Authors Abdullah, MT, Dr. Rijal Adinda Adinda Adree Octova Agus Susanto Aldo Mahyandra Aldo Mahyandra Andhini, Dhini Andree Octova Andres Melbaral Androly Andreas Annisa Intan Y.R Ansosry Ansosry Aulia Defriansyah Baron, Adhitya Benti Jul Sosantri Bianda F Aprilla Bimo Elang Putra Byma Bryanco Devit Aswandi Dhini Andhini Diah Wulandari Diki Saputra Elsa Rahma Afrila Fadel Rahman Febrianto Febrianto Febryanti Febryanti Fellya Septia Fauzi Feraldo Sandrio Fikriansyah Ersyad Firdaus Firdaus Fitratul Rahmi Fitri Desri Yeni Fitri Nadia Fitrya Monica Gamma Putra Harifan Prima Hastia Ulfa Heri Prabowo Icksan Lingga Pradana Indra Lesmana Putra Jeffry - Albadri Kiki Gusmaningsih Laju Boy Ardi Harahap M. Fadly M. Ravil Akbar Elfiantra Marchellevandra Gomis Marta Weri Mhd Zanil Mia Fazira Miftahul Jannah Arida Milia Putri Moudy Intan Fandini Muhammad Aditya Faisal Muhammad Al Fajri Tamsin Muhammad Fajar Rahman Muhammad Hazwafi Ardeva Muhammad Rafif Gusvi Rahardi Muhammad Rakha Aqiliyan Muhammad Rizky Mulya Gusman Murad Murad Nabilla Kansha Naldo, Exwil Nefa Rizki Dian NILA RAHMAD DEFITA Octova, Andree Pranata, Hendri Purwoko, Agus Putri Pasaribu Rachim, Velya RAHUL GONZALES Raimon Kopa Randa Ramadhan Reynaldi Ezra Reza Taufiqurrahman Rian Saputra Riandy Kurniawan Rico Fernandes Rihan Efendi Rijabul Mulia Rika Yastavia Riki Adha Riko Maiyudi Ronaldo Davinci Saldy, Tri Gamela Sugiono Sugiono Sumarya Sumarya Syamsul Arifin Syarifa Amalia Tri Yeli Marsa Velya Rachim Wiza Esti Ningrum Yoszi Mingsi Anaperta Yulia Minara

Title

Found 84 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 84 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 84 Documents
Search