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

Raimon Kopa

Universitas Negeri Padang

Author-ID : 2720224

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

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Analisis Stabilitas Lereng Ruas Jalan Sicincin–Malalak Km 31 Kecamatan Malalak, Kabupaten Agam, Provinsi Sumatera Barat Evansharsal Suedi; Raimon Kopa; Rusli HAR
Journals Mining Engineering : Bina Tambang Vol 3, No 3 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Landslide natural disasters are one of the natural disasters that cause fatalities and property. Based on the frequency of events, intensity, and geological conditions, the area of Kabupaten Agam Sumatera is an area that must be aware of the potential for landslidesthis is shown in the vulnerability map of soil movement by the Dinas Energi dan Sumberdaya Kabupaten Agam Sumatra Barat. Malalak District Agam Regency is one of the zones that has a high vulnerability to soil movement. This is shown in the Agam Regency Landslide Hazard Map which needs to consider slope security because it has many factors triggering landslides, especially in its purpose as road access.This research is classified into applied research. Slope stability in this study will use slope geometry data, physical properties, mechanical properties, Rock Quality Designation (RQD) rock mass classification, Rock mass Rating (RMR) and using the Bishop Simplified method (FK or Safety Factor) supported by software. analysis of avalanche types and security factor analysis.As a result of the research carried out on the Malalak KM 31 road section, it can be concluded the following points. The rock type of the slope compiler is andesite with the value of rock mass classification with a value of RMR of 68 including in the second (II) class rocks with good rock categories. The results of kinematic analysis indicate the potential for Baji avalanches. Ground vibration that is received by the slope affects the stability value with the value of the earthquake vibration based on the Indonesian seismic map of 0.6 g. In determining the value of the actual slope safety factor using security factor analysis software obtained FK value in dry conditions of 4,000, natural conditions of 3,979, saturation conditions of 3,966 this shows the condition of the water in the rock does not significantly affect the value of slope safety factor. Whereas the value of the safety factor with the influence of vibration is obtained in a dry condition is 2,659, the natural condition is 2,642, the saturation condition is 2,638 from the result of the vibration effect on the stability of the slope has a considerable decrease in the safety value of the slope but shows that the slope condition is still stable. Keywords: Slope Stability,Road ,Ground Vibration ,RMR, Safety Factor

Evaluasi rancangan geometri peledakan untuk mengoptimalisasikan hasil peledakan pada penambangan batu andesit di PT. Bintang Sumatera Pacific pangkalan koto baru kabupaten 50 kota provinsi sumatera barat Tunaiki Harukadol; Raimon Kopa
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.v6i1.111307

Kegiatan peledakan dilakukan oleh PT. Bintang Sumatera Pacific memproduksi cukup besar> 60 cm (> 15%), sedangkan kapasitas bucket digger Hitachi Zaxis 200 adalah berukuran 1.09 m3. Geometri peledakan merupakan salah satu faktor penyebab banyaknya fragmentasi yang dihasilkan. Sehingga analisis fragmentasi peledakan dilakukan dengan menggunakan persamaan kuz-ram dan perbaikan geometri peledakan dilakukan dengan menggunakan R.L Ash dan C.J. Konya. Sebagai hasil dari penelitian, kesimpulan berikut diambil. Pertama, fragmentasi batuan dari geometri peledakan yang diusulkan, rata-rata fargmentasi batuan yang lolos berukuran <60 cm dengan software split desktop yaitu 100% dari 1 kali peledakan. Kedua, berdasarkan perhitungan menggunakan rumus RL Ash untuk geometri peledakan yang diusulkan I, II, III, IV dan perhitungan menggunakan rumus CJ Konya untuk geometri peledakan yang diusulkan V. Kemudian dipilih usulan geometri peledakan I menggunakan rumus RL Ash dengan nilai ruang (S) 2 meter, beban (B) 2 meter, kedalaman (H) 5,5 meter, tinggi (L) 5 meter, Stemming (T) 2 meter, Subdrilling (J) 0,5 meter, kolom pengisian rata-rata 3,5 meter . Ketiga, hasil produksi yang diperoleh dari satu kali uji coba peledakan yang diusulkan adalah 5.977 ton

Analisis Pengaruh Double Deck Primer Terhadap Fragmentasi Batu Kapur di Quarry D Blok 2 Lokasi 198 PT Indocement Tunggal Prakarsa Tbk. Citeureup Bogor - Jawa Barat Franata Halomoan Sinaga; Raimon Kopa
Journals Mining Engineering : Bina Tambang Vol 3, No 3 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Mining activities at PT Indocement Tunggal Prakarsa use the Quarry method and the process of dismantling the limestone material using blasting methods to meet the production targets and facilitate the loading and hauling process. Each blast requires a fragmentation size ≥ 90 cm of ≤ 5% and a ground vibration that fits the target of the company. However, the reality of the field found that the size of fragmentation does not exceed the target desired by the company because the size of ≥ 90 cm fragmentation of ± 11%. Improvements in blasting activities need to be done to obtain the size of the target fragmentation by the company. Therefore, one of the way to obtain the size of the target fragmentation is using the double deck primer methods by putting two primers in the bottom and in the centre of the blasting hole with stemming in the centre of the hole for minimalize the ANFO. The method resulting the same energy in all part of the hole and finally minimalize the boulder. The methods that are used to analyze fragmentation of explosive results in this research are theoretically by using Kuz-Ram method and image analysis method by using Split Desktop Software. This is done to determine the percentage of fragmentation of blasting results and take into account the boulder. The results of fragmentation analysis of the blasting results show that the addition of Double deck primer may affect the size of fragmentation. The sizes of fragmentation are ≥ 90 cm (boulder) to 2,27% and ground vibration at <2 mm / s so the size target of fragmentation that is desired by the company is achieved and the value of ground’s vibration is under the value set by the company.Keywords: Blasting, Fragmentation, Vibration, Cost

Analisis Pengaruh Geometri Peledakan Terhadap Fragmentasi Hasil Peledakan Serta Digging Time Dan Produktivitas Alat Gali Muat Pada Tamka PT. Allied Indo Coal Jaya, Kota Sawahlunto Rahadiyan Malvin Sunyoto; Raimon Kopa
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.v6i1.111467

Abstract. The overburden disassembly process implemented by PT. Allied Indo Coal Jaya is by drilling and blasting. Observations in the field of actual blast geometry applied by the company obtained fragmentation of boulder-sized blasting results with a percentage of + 31%. The large percentage of boulders resulted in the diggability of the loading and unloading tools and the company's planned load digging productivity target of 100 bcm/hour was not achieved. The study aims to design optimum blasting geometry to reduce the percentage of boulders so that loading activities become effective and the productivity of loading tools increases. The research method was carried out by providing recommendations for blasting geometry based on R.L. Ash theory and the method "The Modern Technique of Rock Blasting" and carried out the application of one of the geometric designs to be applied in the future for the company. The geometry of the proposal applied in the field is: burden: 2.7 m, spacing 3 m, stemming: 2.5 m, subdrilling: 0.8 m, level height: 5.2 m, explosive hole depth: 6 m, powder column: 3.5 m, and powder factor: 0.28 kg/m3 where boulder size fragmentation resulted from analysis results with desktop split software of 14%. Keywords: Blasting Geometry, Blasting Result Fragmentation, Digging Time, R.L. Ash, Modern Technique of Rock Blasting

Kajian Teknis Penentuan Geometri Peledakan Untuk Mengoptimalisasikan Perolehan Hasil Peledakan CV. Tekad Jaya Desa Lareh Sago Halaban, Kabupaten Lima Puluh Kota, Sumatera Barat Andre Tri Wahyudi; Raimon Kopa
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.v5i5.109783

Abstract.Limestone Mining at CV. Tekad Jaya with a surface mining system with the Quarry mining method. The proportion of boulder-sized fragmentation blasting 80 cm produced at this time in the field is > 30%, as a result the diggability of the digging time is not optimal that is ±13 second. This study aims to design a new blasting geometry to obtain optimal fragmentation results that is <20%, so that the digging time results to be optimal that is 8-10 second. The recommendation of blasting geometry using the research method is based on the theory of R.L. Ash and C.J. Konya and from one of the good blasting geometry map designs will be applied in the field so as to get the optimal blasting geometry design from one of these blasting geometry designs to be applied in the future for the company. The basis of the results of field application of one of the blasting geometry plans, namely: load: 1.9 m, space: 1.9 m, stemming: 1.4 m, subdrilling: 0.3 m, level height: 5 m, hole depth explosion of 5.5 m, powder column: 4.1 m, and powder factor: 0.8 kg / m3 where the fragmentation of the boulder size 80 cm resulting from the split desktop software analysis was 3.17%. The resulting digging time was 9.63 seconds Keywords:Geometry Blasting, Blasting Result Fragmentation, R.L. Ash, C.J. Konya, Excavation Time

Analisis dan Rancangan Pola Peledakan pada Lapisan Interburden K37 – K39untuk Mendapatkan Fragmentasi yang Sesuai dengan Alat Muat di PT. Asmin Koalindo Tuhup, Kalimantan Tengah Suhendrinal Suhendrinal; Raimon Kopa
Journals Mining Engineering : Bina Tambang Vol 3, No 4 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract.PT. Asmin Koalindo Tuhup is one of the industries engaged in coal mining, which is located in the Central Kalimantan region. Karaketeristik of cover rock in the area pit 7 and pit 8 interburden K37 and K39 with a thickness of 27 meters with different layers of mudstone material, siltstone and sandstone. The average thickness of the siltstone material is 3-5 meters and its position is in the upper layer which will be used as a stemming column during blasting. So that it is very influential on the results of blasting later, so it is necessary to do a blasting design to minimize the impact due to the condition of the layer. In the first actual blasting, >1 meter fragmentation value 31.69%, actual blasting of second fragmentation values ≥ 1 meter 26.8% and actual blasting of the third fragmentation value ≥ 1 meter 17.9%. Of the three results of the blasting it was not in accordance with the results of targeted fragmentation (≤ 15%). To minimize the results of the test, the geometry of the blasting is carried out. Based on the results of the study obtained the results of analysis and improvement on the proposed blasting pattern obtained mentasi 1 meter fragmentation using the calculation of wipfrag 0 software from the three proposals. The percentage of boulder ≤ 60 cm based on Kuzram has been below the target of 15% with a value of 6.57%, 6.45% and 6.16%. The digging time value has been below the company's target of 12 seconds, with a value of 10.21 seconds, 9.42 seconds and 10.45 seconds from the performance of the Liebherr R 9250 excavator excavator.Keywords:blasting, fragmentation, design, boulder, coal

Analisis Geometri Peledakan untuk Meminimalisir Jarak Lemparan Batuan (Flyrock) pada Peledakan Tambang Terbuka PT Ansar Terang Crushindo II Pangkalan Sumatera Barat Dengan Visualisasi menggunakan Drone DJI Phantom 4 Suryadi Suryadi; Raimon Kopa
Journals Mining Engineering : Bina Tambang Vol 4, No 3 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. Flyrock is the fragmentation of rocks that are thrown due to result of blasting. Fragmentation of rocks thrown over a safe radius can cause damage to mechanical devices, injuries, and even death to humans. This is what causes the effects of flyrock to be one of the main concerns in every blasting activity. This study aims to analyze the better of geometry in order to reduce the distance of flyrock. The study was conducted on 11 blasting blocks, by comparing the distance of flyrock before and after the geometric changes of the blasting, including seven blasting without simulation and four blasting with the simulation. Observation of the distance of flyrock in detail using DJI Phantom 4 drones and plotting coordinates with GPS (Global Positioning System). Theoretically the distance of rock throws according to the empirical method with the theories of Richard and Moore (2005) is 65 m, and Lundborg (1981) 107.25 m. Whereas according to the method of dimensional analysis with the theory of Ebrahim Ghasemi (2012) it is 110.53 m. Of the seven blasting activities obtained the average distance of rock throws (flyrock) is 143 m with the farthest distance of 160 m. Thus Ebrahim Ghasemi's theory is more representative in predicting the distance of rock throws because it has a smaller difference (22%). Simulation of blasting activities is carried out by changing geometry in stemming depth, because statistically stemming has a very strong relationship to the distance of flyrock (R2 = 0.84), where stemming can control energy in the hole so it is not released upwards in giving rocks to the side. Besides that the increase in stemming causes hole depth to also increase. From the four blasting simulation activities carried out, the average flyrock distance was 53.95 m with the furthest distance 63.2 m. This means that with the simulation the distance of flyrock can be minimized by 89.05 m or about 62.27%.Keywords: Blastability Geometry, Flyrock

Ipteks Bagi Masyarakat Nagari Tangguh Bencana Melalui Kelompok Siaga Bencana (KSB) Sungai Nyalo Mudiek Aia, Kecamatan Koto XI Tarusan Kabupaten Pesisir Selatan Raimon Kopa; An Sosry; Tamrin Kasim
Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Vol 17, No 2 (2017): JURNAL SAINS DAN TEKNOLOGI
Publisher : Sekolah Tinggi Teknologi Industri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36275/stsp.v17i2.27

Program kegiatan yang akan dilakukan ini lebih bersifat komprehensif, bermakna, tuntas dan dapat menjadi problem solving dalam mencapai sasaran serta harapan masyarakat terkait penanggulangan bencana. Kegiatan ini selaras dengan tujuan program pengabdian dengan lebih melibatkan kelompok masyarakat dalam membantu menciptakan kenyamanan serta meningkatkan kesiapsiagaan terhadap bencana. Dalam kegiatan ini nantinya akan memberdayakan kelompok siaga bencana (KSB) di Nagari Sungai Nyalo Mudik Aia, Sungai Nyalo Mudiek Aia, Kecamatan Koto XI Tarusan. Program IbM yang dilakukan bersama kelompok siaga bencana (KSB) di Nagari Sungai Nyalo Mudik Aia, Kecamatan Koto XI Tarusan. telah menghasilkan beberapa capaian dan telah terlaksana dengan baik. Sebagai langkah awal dilakukan studi literatur dan identifikasi permasalahan yang dihadapi mitra. Dari hasil tersebut dilakukan penjaringan komitmen dengan mengadakan pertemuan dengan pihak terkait. Tahapan selanjutnya yang telah dilaksanakan terkait dengan survey/pemetaan geologis daerah sebagai. Berdasarkan kondisi kelompok siaga bencana (KSB) di Sungai Nyalo Mudik Aia, Kecamatan Koto XI Tarusan, tim pengabdian mencoba menyusun alat bantú análisis untuk penilaian ketangguhan desa/kelurahan tersebut. Tim pengabdian melakukan analisa pembobotan berdasarkan indikator dan parameter yang telah ditentukan dalam aturan kepala BNPB. Proses analisa kajian risiko bencana yang dilakukan oleh Tim Pengabdian. Proses analisa ini menghasilkan jenis bencana yang disepakati oleh masyarakat di Nagari Sungai Nyalo Mudik Aia, dari jenis tersebut juga telah teridentifikasi jenis kejadian yang pernah terjadi dan lainnya merupakan potensi karena belum pernah terjadi, penentuan jumlah kerentanan berupa penduduk terpapar, dampak kerusakan fisik dan bangunan serta lingkungan. Tingkat kapasitas, análisis dilakukan berdasarkan penilaian kuesioner dari tools kesiapsiagaan masyarakat dan tools ketangguhan desa. Analisa dirangkum dalam sebuah matriks tingkat risiko untuk setiap jenis bencana yang ada. Kata Kunci : tools kesiapsiagaan masyarakat, tools ketangguhan desa/kelurahan

Evaluasi Geometri Jalan Angkut Komatsu HD785-7 Dari PNBP 4 Ke Crusher 6 Tambang Batu Kapur PT. Semen Padang. Ryan Markah; Raimon Kopa; Tri Gamela Saldy; Rudy Anarta
Journals Mining Engineering : Bina Tambang Vol 7, No 3 (2022): 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.v7i3.120208

Every mining activity always requires a haul road to move the minerals to be produced. PT. Semen Padang is an open-pit mining company that produces limestone or limestone as a cement making material. One of the mining activities that can affect the production target is the transportation process. From the results of observations about the geometry of the PNBP 4 to Crusher 6 haul roads, several non-ideal road geometries were found that could affect the production achievement. The non-ideal condition of the haul road geometry found is, the condition of the straight road is 18.9 meters wide, while the ideal is 18,025 meters. Then the corner with a width of 22.8 meters, while ideally 26,154 meters. Then the road slope is found to be 21.8%, while ideally it is 10-12%. The condition of some of these road geometry factors affect the cycle time of the material transport process. Where the condition of hauling the contents along the haul road takes 7 minutes 48 seconds. While the condition of empty hauling takes 5 minutes 23 seconds. In the comparison of actual field data with grade calculation results, it was found that there were still road grades that were not ideal, namely in the segment 25-27. Then to achieve the ideal cross slope value of 2%, then the height difference between the left and right roads to the haul road axis that must be made is 18 cm. Based on the results of the evaluation of the haul road geometry from PNBP 4 to Crusher 6, it can be concluded that there are actual road conditions that are not in accordance with the ideal calculation standard. Therefore, it is necessary to increase the width on the straight condition road and increase the width on the bend condition road. In the superelevation section, the height difference that must be made between the inside and outside of the haul road bend is 1,02 meters. Then to overcome the runoff water that inundates the haul road during rainy weather, it is necessary to make several drainage channels.

Evaluasi Teknis Penambangan Batu Gamping untuk Menganalisis Faktor Ketidaktercapaian Target Produksi di Perusahaan CV Tekad Jaya Yoky Febrian Risellino; Raimon Kopa
Journals Mining Engineering : Bina Tambang Vol 9, No 2 (2024): 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.v9i2.128879

CV Tekad Jaya merupakan perusahaan yang bergerak di bidang penambangan batu kapur dengan sistem open pit. Pada kegiatan peledakan CV Tekad Jaya menggunakan detonator elektrik dengan peledakan sebanyak dua kali dalam seminggu dengan tujuan untuk memisahkan batuan dengan batuan sumbernya. Dalam kegiatan pengangkutan dengan menggunakan metode luncuran batu, yang dimaksud dengan luncuran batu disini adalah dimana batuan hasil peledakan yang terpisah dari batuan sumbernya dijatuhkan dengan menggunakan alat ekskavator yang meluncur ke bawah dengan tempat yang telah disiapkan untuk menampung batu tersebut di tempat tersebut. Dasar lereng yaitu bagian depan pengangkutan, sehingga volume geometrik peledakan akan sangat mempengaruhi volume batu kapur yang dihasilkan. Setelah batuan terkumpul di blasting shelter, maka excavator akan mengambil batuan tersebut, setelah itu batuan tersebut akan diangkut dengan dump truck untuk dibuang ke stock hopper kemudian batuan tersebut dipecah menjadi ukuran 30 × 40 cm dengan pemutus dan excavator yang bekerja di dekat stock hopper, memuat atau mengumpankan batuan pada stock hopper yang telah dipecah ke dalam hopper crusher agar dapat diolah. Target produksi yang direncanakan perseroan yaitu 10.000 bcm/bulan atau 20.000 ton/bulan belum terpenuhi. Beberapa faktor tersebut adalah volume hasil peledakan, jumlah alat produksi yang optimal dan produksi excavator dan dump truck pada bagian depan pengangkutan batuan hasil peledakan ke stock hopper, produksi excavator dalam rock feeding dari stock hopper ke hopper crusher dan, produksi efektif dan waktu kerja crusher dalam mengolah batuan. Berdasarkan hasil perhitungan produksi diperoleh pada peledakan 25827,9 ton/bulan, Loading-hauling Excavator 187.295,20 ton/bulan, Dump Truck 24754,65 ton/bulan, dan crusher 8010,24 ton/bulan. Sehingga dari sini produksi crusher tidak tercapai. Optimalisasi produktivitas crusher dapat dilakukan dengan penambahan jam kerja dan optimalisasi jam kerja pada waktu standby. Hasil optimasi yang diperoleh adalah 21315,84 ton/bulan, sehingga target produksi yang direncanakan tercapai.

Co-Authors Admizal Nazki Alfisahri Kurniawan Alvi Zichri ALVIN IRANTO PURNAMA An Sosry Andre Tri Wahyudi Asep Triyanda Auaradha Shukura Muji Can Royen Situmorang Dedi Yulhendra Denny Prananda Libriyon Evansharsal Suedi Fadhlan Assany Fariz Aditya Fenny Aulia Gustin Fitri Eka Yulia Franata Halomoan Sinaga Halid candra Heri Prabowo Icksan Lingga Pradana Ika Desmawita Josep L. Marpaung Jufrizal Muhamad iqbal Muhammad Ilham Cahyadi Mulya Gusman Naufal Permanda Osmaini Sutra Haryati Qiratul Aini Rahadiyan Malvin Sunyoto Redy Pratama Resty Prasuryani RIRIN HANRIESTA BR MATONDANG Rizka Anazakia Rudy Anarta Rusli HAR Ryan Markah Sahrul Ramadana Saldy, Tri Gamela Suhendrinal Suhendrinal Sumarya Sumarya Suryadi Suryadi Tamrin Kasim Triliani Utami Tunaiki Harukadol Welly Handa Nuraga Yoky Febrian Risellino Yoszi Mingsi Anaperta Yuri Purwa Agung Hs

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