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Journals Mining Engineering : Bina Tambang
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.
Arjuna Subject : -
Articles 609 Documents
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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

Abstract

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
Sistem Penyaliran Tambang dalam Menanggulangi Air Limpasan Alami dan Air Limpasan Terganggu di Open Channel Pit II Blok Utara PT. Tamarona Mas Internasional Eko Chandraleksmana; Murad Murad
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.v6i2.111697

Abstract

Abstract. High rainfall at the planned mine site can hamper mining operations in achieving the production target of 500,000 MT/year. Planning of a mine drainage system is needed which is well reviewed technically and also the costs arising from the making of the mine drainage system. Analysis of daily rainfall data at the research location in 2010-2019 using gumbel distribution, obtained rainfall plan of 138.26 mm/day for the 5- year return period. After an analysis of the influential rain catchment area, a location that requires open channels and sewers was obtained. There are still dimensions of open channels and sewers that are not in accordance with the area of rain catchment that is influential based on the results of calculations. Excessive sedimentation in the sewer inlet occurs due to material conditions in the research area dominated by erosioneasily eroded sediment material and an open channel slope of >3% at the upstream. Avalanche on the open channel wall occurs because the material on the open channel wall is weak material and easily affected by water. In addition, the slope dimension of the wall is too steep (more than 60o ) also affects the avalanche that occurred. Excessive sedimentation in the inlet of sewers can be minimized by making a drop structure design and flow breaker structure while avalanches on open channel walls can be minimized by making the slope dimensions of open channel walls > 60o .Keyword: Production, Rainfall, Open channels, Culvert, Sedimentation
ANALISIS KESTABILAN LERENG BLOK BUKIT RAHMAT PT. CAHAYA BUMI PERDANA, KOTA SAWAHLUNTO Muhammad Fadillah; Bambang Heriyadi
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.v6i2.111779

Abstract

Abstract. PT. Cahaya Bumi Perdana is a company engaged in coal mining, located in Sawahlunto City, West Sumatra Province with an area of 103.10 Ha. There is a slope with a height of 23.2 meters, a slope of 78ο and this slope is 7 meters behind the BT 04 tunnel door. With these slope conditions, it has the potential to endanger workers and hinder production.The results of testing the physical and mechanical properties of the soil obtained the original bulk density value of 18.88 kN/m3 , cohesion (c) 8.6054 kN/m2 and inner shear angle (ϕ) 43,54ο . The results of the physical and mechanical properties of the sandstone are the original bulk density of 22.85 kN/m3 , the cohesion (c) of 184.3 kN/m2 and the inner shear angle (ϕ) 53,4894ο . The analysis and recommendations used the simplified bishop and simplified janbu methods. The results of the study are landslides in the form of landslides with a 40% possibility of landslides in the direction of landslides N 283ο E/78ο . Therefore, a single slope recommendation is carried out, so the slope is 71° and the safety factor (FK) is 1.333 and the slope is in a safe condition. Keywords: Physical and Mechanical Properties of Soil and Rocks, Slope Geometry, Simplified Bishop, Simplified Janbu, Safety Factors
Analisis Stabilitas Lombong (Stope) Blok 1 SOD Level 7 Tambang Emas Bawah Tanah PT. Dempo Maju Cemerlang, Salido, Provinsi Sumatera Barat Muhamad iqbal; 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.v6i1.111690

Abstract

Abstract. Research was conducted at the underground mine of PT Dempo Maju Cemerlang, which is focused in gold mining and is located in Pesisir Selatan Regency, West Sumatra Province. This research focuses on the analysis of the stability of the stope and pillar in mining. Mining activities are carried out with an underground mining system using the method, shrinkage stoping namely mining by creating a level level. Within these levels are made stopes or rooms. The blasted ore is removed as a whole, forming stope an empty. If it is feared that a collapse will occur, and this is undesirable, then the stope can be filled with waste originating from the tailing dump, therefore it is necessary to analyze the safety factor before and after filling the material using the help of software Phase2 with the mohr-coulumb collapse criteria. In detail, the observation area is carried out at Level 7 SOD Block 1 with block dimensions of 30 x 30 m. From the modeling results stope before and after the filling material, the safety factor is obtained from 1.59 to 3.63 so that it is categorized as safe. However, for the pillar safety factor, there is one point that is in critical condition, namely 1.03, so a support system recommendation is needed. For this reason, a simulation of giving is carried out shotcrete with a thickness of 100 mm on a critical pillar to increase the safety factor, so that the pillar safety factor is 1.63 so it is categorized as safe.Keywords: shrinkage stoping, safety factor, pillar, filling material
Analisis Kebutuhan Udara Dan Sistem Ventilasi Pada Tambang Batubara Bawah Tanah Lubang CBP 02 PT. Cahaya Bumi Perdana, Kota Sawahlunto, Sumatera Barat. Annisa Oktavianingsih; Bambang Heriyadi
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.v6i2.111712

Abstract

Abstract. PT. Cahaya Bumi Perdana is an underground coal mining company located in the village district of Parambahan, Sawahlunto, West Sumatera province. Underground mine hole in CBP 02 PT. Cahaya Bumi Perdana uses one main blower with a blow system. Hole CBP 02 is a new opening with a lenght of 80 meters. In hole CBP 02 there is one active working unit and two control tanks and one mining branch that is not yet active. From the research results, it was found that the air quality and mining gas were in quite good condition, but the temperature value had passed the established threshold, namely <85 %. This study analyzed the quality of air and gas in underground mines based on KEPMEN 1827 K/30/MEM/2018.Ventilation planning for the future is to use a suction ventilation system that is placed in the ventilation holes located between the inlets C2A and C2B with a relay blower arrangement. Installation of a suction blower followed by the installation of a blower so that the dirty air is circulated out immediately. Dirty air resulting from mining activities from one hole is sucked out throught the ventilation holes and replaced with clean air that enters throught holes C2A and C2B where the blower has been installed. Because of the CBP hole 01 is located above the CBP 02 hole, the amount of methane gas emissions will increase. From the calculation results, the air requirement in hole C2A is 27,425 m3 /s, in hole C2B is 22,735 m3 /s, and the air requirement to dilute methane gas from hole CBP 01 is 69,92 m3 /s. Then the total amount of air needed is 120,08 m3 /s. The number of blowers needed in hole C2A is 15 auxillary blowers with a capacity of 2,7 m3 /s and using 12 auxiliary blowers in hole C2B with a capacityof 2,7 m3 /s, and to remove dirty air using 6 suction fan blower. This ventilation modelling uses ventsim visual 5.Keywords : Temperature, Humadity, Blower, Ventsim Visual 5
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

Abstract

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
PERENCANAAN SISTEM PENYALIRAN TAMBANG, STUDI KASUS : PIT TIMUR BUKIT WRANGLER PT. ANTAM TBK. UNIT BISNIS PERTAMBANGAN NIKEL SULAWESI TENGGARA Aulia Mutiara Chakti; Rusli HAR
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.v6i2.111702

Abstract

Abstract. Based on the data analysis of rainfall at 2010-1019, obtained a rainfall plan is 30,105 m/day with different rain intensiti in each catchmen area with a return period of 25 years. The location of the reasearch is Pit Bukit Wrangler PT. Antam, in 2020 it has 2 catchmen areas with different areas, the area for the catchmen area in area 1 is 0.052959 km² and 0.1186071 km² in area II. Total discharge is 0.3390 m/second in catchmen area I and 0.4803 m²/second in catchmen area II, while the volume of groundwater that enters the Pit Bukit Wrangler is 0.122 m/second. The are 2 open channels which have different dimensions. The open channel I has a wet cross-sectional area of 1.411 m, a wet circumference is 3.149, a hydraulic radius is 0.448 m, and a slope of a channel is 2.228 m. While in open channel II it has a wet cross-sectional area is 1.819 m, a wet circumference is 3.58 m, the hydraulic radius is 0.508 m, and the slope of the channel is 1.039 m. At the Pit Bukit Wrangler there is only one sump and there is one Kubota NS-100 pump unit, but after calculating the current total pump head, the total head currently exceeds actual pump head total. The total head of the pump work and to avoid overflow of water that is in the sump to the floor of the mining pit, and additional 6 pump units have been made. The Pit Bukit Wrangler has one main settling pond with different capacities for each compartment. The settling pond volume at Bukit Wrangler is 2,588.116 m and the total volume deposited solids is 3,864.11 m³/day, and the time required for dredging activities is about 669.78 days or 21 month in one dredging.Key Word : Rainfall, Catchmen Area, Pump, Sump, Sediment Pond
ANALISIS STABILITAS LERENG DALAM PENENTUAN BATAS PENAMBANGAN PADA ZONA 4 TAMBANG ANDESIT PT. BINTANG SUMATERA PASIFIC, KECAMATAN PANGKALAN KOTO BARU, KABUPATEN 50 KOTA, SUMATERA BARAT Reno Putra; Bambang Heriyadi
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.v5i5.110300

Abstract

Abstract. The weak areas that affect slope stability at PT. Bintang Sumatera Pacific. Slope safety factors at the mining location must be considered because of mining activities carried out on these slopes. Slope geometry with upper slope 10.31m and 20.88m down slope with 37.14m width and 82 ° slope. The slope stability analysis used is the general limit equilibrium method. As a result of the research, the following conclusions were drawn. Analysis of rock mass characteristics based on RQD and RMR analysis with rock types at the study location classified in class II on both slopes. Second, the type of landslide potential at the research location is direct toppling of 39.13% on the upper slopes and 29.91% on the lower slopes. Third, the results of the actual slope analysis as a whole obtained the value of FK = 3.478 (natural conditions) and FK = 2.684 (saturated conditions). Fourth, to obtain the final geometry of the safe slope, the geometric simulation of the slope is carried out by reducing the height of the lower slope based on the blasting depth by 6m. From the three simulations carried out, the final geometry of the safe slope is obtained, namely the slope height of 31.19m and slope of 82 °.The overall FK obtained in saturated conditions was 1.535 in safe conditions. Keywords:  Slope Stability Analysis, RQD, RMR, General Limit Equilibrium, Direct Toppling
Studi Penempatan Sumur Resapan Berdasarkan Nilai Laju Infiltrasi, Kualitas Fisik Air dan Tekstur Tanah pada DAS Batang Kuranji Kota Padang Muhammad Fadli; Rusli HAR
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.v6i1.111807

Abstract

Abstract. Population growth in Padang City in 2007-2017 has increased from 838,190 people to 927,168 people (BPS Kota Padang, 2018). With this increase, the need for land / shelter and water needs is also increasing. This has resulted in high development, both in the city center and in the eastern suburbs. In addition, there is also a change in land use functions from forest areas, agricultural land, water catchment areas and cultural heritage lands to residential areas dominated by houses and concrete roads covering the ground. So that the reduced protected areas that function as water catchment areas and sources of clean water. Then with the rainfall in Padang City which is quite high, namely 4,661 mm³ / year, it causes puddles of water every time it rains. Therefore, it is necessary to plan the placement of infiltration wells around the Batang Kuranji watershed based on the value of infiltration rate, water physical quality, and soil texture.The research was conducted at 29 points that spread throughout the Batang Kuranji watershed. The data obtained are primary data, namely data on the physical quality of water (pH, redox potential, conductivity, TDS, salinity, resistivity, DO) and coordinate data.Based on the infiltration data, the average value of infiltration is 0.045710 cm / minute which is included in zone VI / E which is classified as low (<0.1 cm / minute). After conducting research with statistical analysis, physical water quality, rock lithology conditions, ground water level, and land use in the Batang Kuranji watershed, the placement of infiltration wells spread across almost all parts of the Batang Kuranji watershed which is a residential area, public service facilities. , industrial areas and fields. The number of infiltration wells to be placed is 9 points.Keywords: Infiltration Well, Infiltration Rate, Physical Quality of Water, Lithology of Rocks, Land Use.
ANALISIS PENGGUNAAN SISTEM APLIKASI e-PNBP TERHADAP PENGELOLAAN PNBP DI DIREKTORAT JENDERAL MINERAL DAN BATUBARA KEMENTERIAN ESDM Rio Eka Putra; Murad Murad; Fadhillah Fadhillah
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.v6i1.111747

Abstract

Abstarct. Increasing the optimization of state revenue is still a challenge for the Directorate General of Mineral and Coal in managing PNBP. Since the transfer of mining supervision to the central government, the challenges have become bigger and increase. Various efforts have been made by the Directorate General of Mineral and Coal but based on the Audit Results Report (LHP) BPK RI there are still various findings related to PNBP management, including the value that must be paid is not in accordance with the obligations that must be deposited, late payments, and the implementation of regulations and regulations that are not yet optimal. To solve this problem, the Directorate General of Mineral and Coal has built an e-PNBP Application System which aims to simplify the calculation of PNBP obligations by the payer, facilitate the evaluation and verification of PNBP obligations by evaluators, and to make payment billing. To find out the performance of the system, it is necessary to conduct testing by interviewing and observing the evaluators who use it, calculating the compulsory payment assessment index and conducting the Mann Whiteney test on state revenue data as a product of the system.Keyword: PNBP Ditjen Minerba, Permasalahan PNBP, Pengelolaan PNBP, Sistem Aplikasi e-PNBP, Uji Mann Whiteney

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