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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

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Kajian Potensi Flying Rock Peledakan Terhadap Radius Aman Alat Peremuk Crusher di CV Tekad Jaya Halaban Kabupaten Lima Puluh Kota Sumatera Barat Randa Ramadhan; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 5, No 3 (2020): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. Flyrocks is a situation where a miss occurs due to a problem when blasting occurs. Some things that might cause a flyrock are no free face, inappropriate stemming, shallow holes and too many rows. It is expected that with the appropriate geometry can minimize the impact of flyrock that occurs during blasting because it can endanger the tools, buildings and humans that are around the blasting. The research location is in CV Tekad Jaya. The study was conducted by measuring the actual maximum throw distance of the flyrock in the field. Observations were made 35 times. Estimated flyrock throw distances use two methods namely Richard and Moore's theory (2005) to see the impact of stemming and burden on flyrock and Abraham Ghasemi (2012) to see the impact of PF on flyrock. From the estimation results a new geometry was designed using the RL Ash and CJ Konya methods to get a new geometry that has a minimum flyrock. Then obtained nominal burden, stemming and PF of 1.9; 1.43; 0.494 for RL Ash and 2.2; 1.7; 0.397 for CJ Konya. With the geometry obtained flyrock throw distance between 12m to 40m which can be said to be safe for the company.Keywords: Blasting, Flyrock, Geometry, RL Ash, CJ Konya

Kajian Pengaruh Total Resistance Terhadap Produktivitas Pengangkutan Batu Kapur Di Front C PT. Semen Padang, Kecamatan Lubuk Kilangan, Kota Padang, Sumatera Barat Syarifa Amalia; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 5, No 3 (2020): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. PT. Semen Padang is a limestone mining company located in Bukit Karang Putih, Indarung, Padang City, West Sumatera using the quarry mining method. Production in October 2019 on Front C was 139.590 tons while the production target was 307.440 tons. One of the factors that influence the productivity of the conveyance is the total resistance, namely rolling resistance and grade resistance. The lowest total resistance value when loaded is in the M-20-21 segment at -2,8% while the largest in the M-5-6 segment is -14,1%. The smallest total resistance value when empty is in the M 3-2 segment by 0,47515% while the largest in the M 2-1 segment is 21,5717%. After simulating the total resistance value, the total resistance value obtained when the smallest load is in the M 8-9 segment is -2% while the largest in the 3-4 M segment is 9,3%. The smallest total resistance value when empty is in segments M 20-19 is 15,77%. With the increased productivity of the conveyance from 375.300 tons/hour/ unit with a cycle time of 25,53 minutes to 437.880 tons/ hour/unit with a cycle time of 21,88 minutes.Keywords: Production, Productivity, Total resistance, Rolling Resistance, Grade Resistance, and Cycle Time

Analisis Pengurangan Getaran Tanah (Ground Vibration) Hasil Peledakan Overburden Di Pit Agathis PT Kalimantan Prima Persada Jobsite HJUR, Rantau, Kalimantan Selatan Yulia Minara; Dedi Yulhendra
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.v5i5.110348

Abstrak. PT Kalimantan Prima Persada merupakan perusahaan yang bergerak di bidang kontraktor pertambangan yang menggunakan metode peledakan. Guncangan tanah merupakan salah satu dampak negatif peledakan terhadap lingkungan sekitar dimana pada tingkat tertentu dapat menyebabkan kerusakan bangunan di sekitar lokasi, khususnya di Desa Lokpangel yang saat ini jaraknya dari 1.100 m. Nilai ambang batas tingkat getaran tanah adalah 2 mm / pemilik PT Bhumi Rantau Energi.Data getaran tanah dianalisis menggunakan teori untuk melihat sinyal pengisian bahan peledak dan getaran tanah yang dihasilkan (PPV). Dengan menggunakan pendekatan persamaan regresi daya, diperoleh prediksi bahan peledak dalam jarak 1100 meter yang dapat memenuhi standar getaran yang ditetapkan. dan nilai koefisien determinasi (R2) yang diperoleh sebesar 0,526 (53%), sehingga masih terdapat 47% faktor diluar yang dapat dikendalikan dengan metode tertentu. Metode penggunaan penambahan lubang presplitting dan kontrol pengisian dan Pola Peledakan V-Cut.Berdasarkan teori jarak berskala, prediksi kandungan bahan peledak adalah 59,07 kg ANFO. Namun karena penerapan tambalan di bawah, maka tidak perlu dikurangi. Penggunaan metode kontrol ulang pengisian dan Pola Peledakan V-Cut telah efektif dalam dampak dampak tanah agar tetap pada nilai yang telah ditentukan.Kata kunci: peledakan, getaran tanah, getaran, partikel, jarak skala

Perencanaan Penambangan Jangka Menengah (Quarterly Plan) Batubara Tahun 2018 Di Blok Jebak 2 PT. Nan Riang Desa Ampelu-Jebak Kecamatan Muara Tembesi Kabupaten Batanghari Provinsi Jambi Miftahul Jannah Arida; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 3, No 4 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstrak. PT. Nan Riang as the Business Permit holder in the Mining Business Permit (WIUP) Region of Muara Tembesi Subdistrict, Batanghari Regency has carried out exploration activities in Jebak Block 2. There are 22 drilling exploration data points, with drill points <250 meters and moderate geological conditions with results drilling there are 2 coal seams. Mining planning needs to be made for a quarterly period in order to minimize the problems that will occur. The modeling and design of the pit was made using the Vulcan Software 9.02. From the geological modeling that produced the Block Model, the reserve was obtained at 1,568,347 tons of coal and 4,169,132 bcm overburden. The allocation of Fleet for the Quarter II of 2018 is 1 Fleet for coal and 3 Fleet for overburden. This Fleet allocation is valid until Quarter 1 of 2019. Reserved Pit quarterly design results in 2018, namely quarter II Year 2018 overburden stripping of 519,926.4 Bcm and 176,111.6 Ton Coal, quarter III of 2018 with overburden stripping of 525,476.5 Bcm and 185,521.8 tons of coal, quarter IV of 2018 with overburden stripping of 334,817.3 Bcm and 182,583.8 tons of coal and for the first quarter of 2019 with the amount of overburden 546,384.1 Bcm and 17,632.9 tons of coal. So that the total production of 2018 overburden and quarterly coal based on pit design is 1,811,701 Bcm and 720,525 tons with Striping ratio 1: 2.5.Keyword : Block Model, Design Pit, Overburden, Coal, Vulcan 9.02

Evaluasi Teknis Penambangan Bauksit dari Front Penambangan Menuju Washing Plant Area untuk Menganalisis Faktor Ketidaktercapaian Target Produksi Berdasarkan Efisiensi Biaya Operasional Penambangan PT. ANTAM Tbk. UBPB Tayan, Kalimantan Barat Rika Yastavia; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 5, No 1 (2020): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. PT. ANTAM Tbk. UBPB Tayan, West Kalimantan undertake mining activities at Bukit 7B area by doing two activities in the process of transporting material to washing plant area. In this area ore which mined from front area will be transported to stockyard ETO (Exportable Transit Ore), then from a stockyard ETO ore is transported to the washing plant area. But due to the buildup of material in stockyrad ETO area, the company does the initiative by conducting a direct feeding (ore mined from front area will be transported directly to the washing plant area without doing stock in stockyard ETO area). Based on field observations, production target at Bukit 7B area PT. ANTAM Tbk. UBPB Tayan still has not achieved, from the results of the calculation obtained the actual production of work Activity 1 is 305,554.15 tons/month, while in work activity 2 of 190,004.75 tons/month. The operational cost used by the company in work Activity 1 is Rp. 195.167, 92X, while the operational cost of work activity 2 is Rp. 167.142, 22X. When the North West Corner Rule Transportation method is used, the minimum operational cost that the company can use is Rp. 184.420,83X. In other words, the North West corner rule method on this research proved to be very influential and helpful in the efficient or minimising costs.Keywords: Bauxite, Productivity, Excavator, Dump Truck, and North West Corner Rule Method

Analisis Pengaruh Geometri Peledakan Terhadap Fragmentasi Hasil Peledakan Limestone Pada PT. Semen Padang, Kota Padang. Laju Boy Ardi Harahap; Dedi - Yulhendra
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.v6i3.112655

This final project is based on the fragmentation of limestone blasting resulting in a size of ≥ 80 cm which hinders the performance of the crusher. The purpose of this final project is to get a blasting geometry recommendation; to achieve a fragmentation value of ≥ 80 cm with a retained percentage of 10%. Actual blasting geometry with blast hole diameter 4 inches, burden 3,05 m, spacing 3,04 m, blast hole depth 7,59 m, subdrilling 0 m, PC 4,35 m, stemming 3,24 m, ladder height 7,59 m and PF value 0,60 kg / m3. The percentage of rock fragmentation resulting from blasting in the actual geometry uses a split desktop with the percentage of fragmentation ≥ 80 cm retained, namely 21,605%. The geometries that have a major influence on the actual blasting result fragmentation are; Burden with (R2) = 0,7705 or 77,05%, Space with R²) = 0,7495 or 74,95% and PF with (R²) = 0,6356 or 63,56 %. Therefore, the author tries to propose a blasting geometry so that the resulting fragmentation can fulfill the policies that have been made and the non-uniformity of blasting fragmentation results can be better. The proposed geometry uses the RLAsh formula with the proposed burden of 2,5 m, spacing of 3,5 m, height of 7,5 m, PC 5,75 m, stemming 2,5 m, subdrilling 0,75 m, blast hole depth 8,25 m and PF 0,85 kg/m3. Based on the proposed geometry improvement, the percentage retained by rock fragmentation with predictions using the Kuz-Ram method is obtained, the percentage retained by fragmentation is ≥ 80 cm, which is 5,8%.

Quarterly Plan Penambangan Nikel Tahun 2020 pada Pit X PT. Elit Kharisma Utama Menggunakan Software Maptec Vulcan 9.1 Rihan Efendi; 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. Elit Kharisma utama is one of the private mining companies that are conducting laterite nickel mining in Desa Morombo, Kecamatan Lasolo, Kabupaten Konawe Utara, Provinsi Sulawesi Tenggara. The mining method used is an open pit. Currently PT. Elit Kharisma Utama has been mining the Yudhistira Pit and plans to open a new pit (Pit X) which is next to the Yudhistira Pit. Based on the estimated block model using inverse distance method obtained at Pit X amount of reserves is 201,992.2 bcm with an average Ni content is 1.69% according to consumer demand at a level of 1.5% Ni and stripping ratio of 1:3 can be mined in a single quarter in beginning in 2020 with a production target of 50,000 bcm per month. Based on the research it can be concluded that the total reserves at Pit X are feasible to be mined and meet the planned production targets.Keywords: Reserve, Grade, Production, Overburden, Ore.

Optimalisasi Produksi Batubara Pada Proses Coal Getting di Pit 3 PT. Jambi Prima Coal, Kecamatan Mandiangin, Kabupaten Sarolangun, Provinsi Jambi Rico Fernandes; Dedi Yulhendra
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.v6i3.112518

PT. Jambi Prima Coal is a company engaged in coal mining, which is located in Pemusiran, Mandiangin, Sarolangun, Jambi. The coal production target in PIT 3 PT. Jambi Prima Coal is 20,000 tons /month In July 2019. In fact, coal production in July can only reach 89.25% of the total production target of 20,000 tonnes / month, coal production that can be produced is only 17,850 tonnes / month. Therefore it is necessary to conduct research using the Quality Control Cycle (QCC) to improve and optimize coal production. In this study, the required data are in the form of excavator and conveyance cycle time, field resistance, the number of mechanical devices used and the productivity of the dig and load equipment. The results of calculations using the Quality Control Cycle (QCC) method were carried out by increasing work efficiency, reducing loss time and improving working time so that the coal production obtained was 25,431.94 tons / month, which increased production by 37.9%. This production result shows that the improvements made have resulted in an increase in production yields from previous results.

Optimalisasi Peralatan Tambang Komatsu HD 785 dan Caterpillar 6030 BH Menggunakan Metode Quality Control Circle Untuk Memenuhi Target Produksi Batu Gamping Pada PT. Semen Padang (Persero) Tbk. M. Fadly; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 4, No 3 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract.The process of loading and hauling limestone at PT. Semen Padang from the mining front to the crusher uses a combination of Caterpillar 6030 BH Excavator and Komatshu 785 Dump Truck mining equipment. Limestone production target in August 2018 is 853,984 tons.This study uses the QCC method to increase the productivity of mining equipment. In the actual achievement before the increase in productivity of the digging equipment was 80,4 % and transport equipment 72,1 % of the production target in August 2018. Based on the Paretto analysis the main problem and the dominant cause of not optimal productivity of mining equipment was the amount of work time wasted 84, 5 hours / month for loading and unloading equipment and 102.88 hours / month for conveyance from available work time.By improving the wasted work time with the QCC method productivity increases to around 22,2 % for loading and hauling equipment 28 % of actual productivity. After increasing the time wasted to 27.97 hours / month for loading and unloading equipment and 28.7 hours / month of conveyance.Keywords: Excavator, Dump Truck, Produktivity, Quality Control Circle, Paretto

Rancangan Teknis Penambangan Batukapur pada WIUP OP 412 Ha di PT Semen Padang Sugiono Sugiono; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 4, No 3 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Mining technical design is a design process that is technically very important to do before the start of mining activities. In Indonesia, the government policy on mining engineering is regulated in the Minister of Energy and Mineral Resources Decree No. 1827K/30/MEM/2018 concerning Good Code of Practice for Mining Engineering. In this study, the author discusses the technical design of limestone mining at PT Semen Padang. The purpose of this technical design of mining is to get an overview of the stages of work in the limestone mining process to achieve the production target. Work starts from the geological modeling process in the form of block models. Furthermore, the work continued to the stage of making the ultimate pit limit design. Production scheduling is only for 2019, with proposed mining of 10,839,515 tons. With the provisions of the mining production target per three months, then the push back design is carried out. Next is the calculation of tool productivity. With known production targets and mining equipment productivity, mine scheduling can be done last.Keywords: Block model, ultimate pit limit, production scheduling, push back, and mine scheduling

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

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