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Journals Mining Engineering : Bina Tambang

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Published by Universitas Negeri Padang

ISSN : - EISSN : 23023333 DOI : -

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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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Implementasi Lesson Study Berbasis MGMP Untuk Membangun Learning Community dan Pofesionalitas Guru-Guru IPA SLTP Kota Sawahlunto Amali Putra; Yurnetti Yurnetti; Ahmad Muharror Walad; Yendriwati Yendriwati
Journals Mining Engineering : Bina Tambang Vol 3, No 4 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstrak – Dalam rangka untuk membangun learning community dan meningkatkan profesionalitas guru-guru yang terhimpun dalam wadah MGMP IPA kota Sawahlunto, telah dilakukan kegiatan pengabdian kepada masyarakat dalam bentuk Program Kemitraan Masyarakat berupa pelatihan dan praktek kegiatan Lesson Study sebanyak 5 kegiatan dari tanggal 3 Agustus sampai 26 Oktober 2018 dengan 3 kegiatan yaitu pelatihan penerapan pembeajaran IPA model Discovery Learning, kegiatan lesson study, evaluasi hasil kegiatan. Berdasarkan data yang diperoleh pada selama dan pada akhir kegiatan mennyimpulkanbahwa dengan pelatihan kegitan lesson study .ternyata dapat membangun learning community antara sesama guru dalam wadah MGMP IPA SMP kota sawahlunto yang terindikasi dari semakin meningkatnya kualitas persepsi guru terhadap lesson study, dan hasil penelitian juga menunjukkan terjadi perubahan hasil belajar siswa menjadi lebih baik. Keywords — lesson study, learnning community, profesionalitas

Evaluasi Hasil Peledakan Overburden menggunakan Metode TOPSIS pada Tambang Terbuka PT Pamapersada Nusantara Jobsite TOPB Kalimantan Tengah Auaradha Shukura Muji; Raimon Kopa
Journals Mining Engineering : Bina Tambang Vol 4, No 1 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. Blasting is an important operations in mining. The explosion carried out by PT Pamapersada Nusantara Jobsite TOPB was an activity involving ANFO explosives. The improper selection of blasting geometry will create a problem with blasting results, such as rock fragmentation with a lot of boulders, flyrock, high ground vibrations, high air blasts, long digging time and high powder factor values. Based on the problems that arise, choosing the right blasting geometry will certainly be needed. Selecting the right blasting geometry can be done using the Multi Criteria Decision Making (MCDM). TOPSIS is one method that can be used in decision making. In determining the right geometry using this TOPSIS, safety and technical parameters are taken into consideration. Finally, Based on the blasting classification obtained from the average Ci* value of twenty available alternatives, the blasting results are categorized as good with a value 0.298 (class II). The most suitable blasting geometry for PT Pamapersada Nusantara Jobsite TOPB from evaluation using TOPSIS is a burden of 6.5 m, spacing of 7.5 m , drill hole diameter of 20 cm, subdrill of 0.5 m, hole depth of 7.25 m and stemming of 4.3 m.Keywords: Blasting, Blasting Geometry, Multi Criteria Decision Making (MCDM), Overburden, TOPSIS

Analisis Pengaruh Parameter Geomekanika Batuan Terhadap Kegiatan Peledakan Pada Front Penambangan Blok A2 di CV. Triarga Nusatama, Kecamatan Lareh Sago Halaban, Kabupaten Lima Puluh Kota, Sumatera Barat Riki Rinaldo; Bambang Heriyadi; Heri Prabowo
Journals Mining Engineering : Bina Tambang Vol 3, No 3 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Determination of the geometry of the blasting and powder factor should pay attention to characteristics of rock mass and local geological conditions. Alternative geometry experiments done to apply the problem of the resulting explosion. The alternative draft geometry is determined by using the characteristics of rock mass Blastability based on Lilly's Index, in the form of rockmass description, joint plane spacing, joint plane orientation, specific gravity influence, and hardness. Based on the results of weighting the mass of rock Blastability Index values obtained are blown up as big as 54.125. From these values, the geometry of the explosion which is good for a 3 inch bore hole is a burden 3 m, spacing 2 m, a depth of 5.5 m, subdrilling 0.5 m, high level of 3.5 m, steaming of 2 m, and explosive hole long 2 m. And also the value of the powder factor 0.24 kg/m³. From the geometry of the proposal generated the desired percentage of the company's boulder and the use of explosives is lower compared to the previous applied geometry. Keywords: Charateristic of rock mass, Blastability index, Geometry, Blasting, Fragmentation

ANALISIS GETARAN TANAH (GROUND VIBRATION) HASIL PELEDAKAN OVERBURDEN DI SITE TAMBANG AIR LAYA SELATAN PT. BUKIT ASAM (PERSERO), TBK TANJUNG ENIM SUMATERA SELATAN Can Royen Situmorang; Raimon Kopa; Sumarya Sumarya
Journals Mining Engineering : Bina Tambang Vol 2, No 1 (2015): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Ground vibration effect directly caused by blasting activities. This effect can be negative value if hedamaged against the influence of the wall bech or building structures. To generate a safe blasting necessary measurements of ground vibration against vibration resulting from blasting so that each can be known maximum number of explosives are best used for a certain distance. By analysis the peak particle velocity and scale distance then it can be determined the value of the peak particle velocity that’s safe and appropriate for the conditions of the surrounding rocks. Blasting activities carried out at PIT south mine air laya PT. Bukit Asam (Persero) Tbk with a pattern of blasting hole by hole, using a surface delay detonator 109 ms, 42 ms and in hole delay detonator 500 ms. Blasting is not done with one explosion, but rather is done gradually or made into some Initiation Point (IP) blasting alternately after done checking. The system uses non-electric and triggers the initial explosion in the form of electric detonators connected to the blasting machine using lead wire. The results of the measurement of the soil vibration obtained PPV average actual 1,72 mm/s, PPV the average regression analysis (prediction) 1,64 mm/s. For geting value PPV 2 mm/s at a distance of 500 m maximum field required as much 57,594 kg of ANFO. The use of blasting method with long period dalay, blasting made into some IP and Line Drilling is already effective and economical to reduce vibration Standard PT. BA PPV 2 mm/s and the SNI 7571 PPV 3 mm/s.

Kajian Teknis Sistem Penyaliran Tambang Terbuka Pada Penambangan Batubara Blok B PT Minemex Indonesia Desa Talang Serdang Kecamatan Mandiangin Kabupaten Sarolangun Provinsi Jambi Randi Sepniko; Murad Murad; Yoszi Mingsi Anaperta
Journals Mining Engineering : Bina Tambang Vol 3, No 4 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. This study discusses optimal solution to handle water entering coal mining Block B PT.Minemex Indonesia. Water comes from ground water and surface runoff that floods the groundfloor of the mining work area, causing coal cannot be carried out. To determination runoff andgroundwater discharge into the mining, we have to know its debit. We also determinatedimensions of open channel, sump, and settling pond, and also capacity of the pump used. Theresults, pit B mining PT. Minemex Indonesia has a total catchment area of 47.3 ha withmaximum daily rainfall of 94,44 mm/day. Total debit is 1,22651 m3/second, maximum capacity ofsump is 85.775 m3, with 123 m x 123 m surface dimensions, and 116 m x 116 m at the base and6 m depth. The trapezoidal-shaped open channel sare located on the mining front to drain thewater to sump, and near the settling pond to drain the pumped water from the sump to thesettling pond. By using HDPE pipes and 3 units Coates HL-200 centrifugal pumps that have 63meters maximum head and 107 liters/second maximum pumping debit, water will be pumpedinto settling pond which has 5 compartments and 10.400,4 m3 overall volume.Keywords: Catchment Area, Rainfall, Sump, Pump, Settling Pond

PEMBUATAN PROGRAM HITUNG PRODUKSI MENGGUNAKAN BAHASA PEMOGRAMAN VISUAL BASIC .NET UNTUK MENGEVALUASI PRODUKTIVITAS ALAT MUAT DAN ALAT ANGKUT PADA KEGIATAN PENAMBANGAN BATU GAMPING PT. SEMEN PADANG Ikhwan Idham; Sumarya Sumarya; Adree Octova
Journals Mining Engineering : Bina Tambang Vol 3, No 1 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Increased in cement demand for development has made PT. Semen Padang increased its cement production. Increased cement demand means increased demand for limestone as a base material for manufacturing cement. Based on data from PT. Semen Padang, the limestone mining production target in August 2016 was 718,000 tons, while the realization of the production 580,000 tons or about 81% of the production target. To determine the productivity of the loading and hauling equipment it is necessary to do some calculation phases. Up to this time, if the process of calculating the productivity of the equipement is done manually, it will take a long time and less practical. And it is expected that a program that can help with the productivity calculation process.Production calculation program is programmed using visual basic programming language. This program can be used to calculate the productivity of loading and hauling equipment. After the analysis and calculation done with the program, improving the productivity of the equipment must be done. To improve the productivity of the equipment, an improvement in the work efficiency of the equipment and the bucket fill factor excavator was made.Calculation results using the program, for the productivity of the loading equipment after the improvement the productivity of dump truck Komatsu HD 785 with Hitachi EX 2500-6 excavator is 721,179.27 tons /month. The calculation results using the program with the manual is not much different. The difference result of the calculation is caused by integrating the numbers behind the comma

APLIKASI METODE GEOLISTRIK DALAM PENENTUAN REMBESAN LIMBAH CAIR STUDI KASUS TPA SAMPAH PASAMAN BARAT Yoszi Mingsi Anaperta; Adree Octova; Dedi Yulhendra
Journals Mining Engineering : Bina Tambang Vol 3, No 4 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

TPA Sampah Muaro Kiawai berada ditengah-tengah perkebunan sawit. Untuk mengetahui arah rembesan lindi yang diakibatkan oleh cairan sampah yang berasal di TPA Sampah Muaro Kiawi maka dilakukan pengambilan data geolistrik dengan metode dipole dipole. Diharapkan dari hasil geolistrik tersebut diperoleh gambaran arah aliran lindi. Selain itu diharapkan juga dapat diketahui kualitas air sungai yang berada di dekat TPA Sampah. Dari pengambilan data yang telah dilakukan maka diperoleh Panjang Lintasan 1 dari arah Barat ke Timur adalah 48 m dengan spasi elektroda 1 m, data yang diperoleh pada Lintasan 1 berjumlah 609 data. Panjang Lintasan 2 dari arah Barat ke Timur yaitu 48 m dengan spasi elektroda 1 m, data yang diperoleh pada Lintasan 2 yaitu 609 data. Panjang Lintasan 3 dari arah Barat ke Timur yaitu 48 m dengan spasi elektroda 1 m,data pada Lintasan 3 yaitu 609 data. Panjang Lintasan 4 dari arah Barat Laut ke Tenggara yaitu 48 m dengan spasi elektroda 1 m, data pada Lintasan 4 yaitu 609 data. Dari hasil interprestasi lapisan berwarna biru hingga hijau muda diestimasi sebagai sebaran air lindi dengan rentangan tahanan jenis di bawah 10 Ωm ditemukan pada kedalam 1 - 2 meter dari permukaan tanah. Arah rembesan air lindi adalah menuju utara searah dengan arah aliran kolam lindi dan diperkiran sudah mencemari air yang berada di anak sungai. Dilihat dari hasil penampang lintasan penelitian yang berdekatan dengan anak sungai, menunjukkan adanya indikasi pencemaran lindi Kata Kunci: TPAS Ampang Muaro Kiawai, metode geolistrik konfigurasi dipole dipole

Analisis Kestabilan Lereng Studi Kasus Kelongsoran Ruas Jalan Sicincin-Malalak KM 27.6 Kecamatan Malalak, Kabupaten Agam Qiratul Aini; Raimon Kopa; Rusli HAR
Journals Mining Engineering : Bina Tambang Vol 3, No 2 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Badan Penanggulangan Bencana Daerah Kabupaten Agam, Sumatera Barat, menyatakan sekitar 65.068 dari 519.000 warga Agam berada dan tinggal di lokasi rawan tanah longsor. Salah satu kejadian longsor di Kecamatan Malalak (2017), mengakibatkan penutupan ruas jalan alternatif Sicincin-Bukittinggi. Selain itu, terdapatnya titik yang rawan terhadap longsor yaitu pada titik S 0° 22.314' dan E 100° 17.339 dengan elevasi 1212 mdpl.Penelitian ini merupakan penelitian terapan (applied research) dengan metode kuantitatif. Analisis kestabilan lereng dibantu dengan software tambang. Data yang digunakan adalah data primer yang terdiri dari data sifat fisik tanah yaitu: kadar air tanah, bobot isi tanah, dan spesific gravity, data kuat geser tanah dimana uji kuat geser tanah akan menghasilkan nilai kohesi (c) dan sudut geser dalam tanah (????), tinggi lereng (m), sudut kemiringan lereng (˚) dan ketebalan tiap lapisan tanah pada lereng penelitian(m). Sedangkan untuk data sekunder terdiri dari Peta Geologi, Peta Hidrogeologi, data curah hujan, Peta Topografi Kabupaten Agam dan Peta Zonasi Gempa Indonesia.Hasil analisis menunjukkan nilai faktor keamanan lereng aktual tanpa memasukkan nilai getaran gempa pada kondisi kering adalah 1,388, kondisi asli adalah 1,040 dan pada kondisi jenuh adalah 0,755. Kemudian nilai faktor keamanan lereng dengan memasukkan nilai faktor getaran gempa pada kondisi kering nilainya 0,742, pada kondisi asli nilainya nilainya 0,599 dan pada kondisi jenuh 0,340. Dari hasil analisis kestabilan lereng menunjukkan bahwa pada saat lereng tidak dipengaruhi nilai faktor getaran gempa nilai faktor keamanannya pada kondisi asli dan jenuh tidak aman karena nilainya <1.25, sedangkan saat kondisi kering lereng tersebut dalam keadaan stabil. Sedangkan jika lereng dipengaruhi getaran gempa didapatkan pada semua kondisi lereng stabil. Kemudian, penulis merekomendasikan untuk perbaikan stabilitas lereng dengan mengubah kemiringan lereng dari 61˚ menjadi 42˚ pada kondisi tanpa memasukkan nilai getaran gempa dapat menaikkan nilai FK lereng nilainya yaitu 1.403, dimana menurut Joseph E. Bowles (1984) lereng tersebut sudah pada kondisi aman.Kata kunci: analisis kestabilan lereng, faktor keamanan, getaran gempa

Kajian Teknis Loading dan Hauling Produksi Overburden pada Tambang Terbuka PT. Allied Indo Coal Jaya, Parambahan, Sawahlunto Yosi Fermila Zarly; Tamrin Kasim
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 one of the mining companies located in the Parambah area, sawahlunto. In coal mining activities, PT. Allied Indo Coal Jaya uses open pit mining methods.PT. Allied Indo Coal Jaya targets overburden production for the eastern central pit at 35,000.00 bcm/month. Mining process for overburden material using mechanical equipment 1 komatsu pc 300-8 excavator unit with 3 hino fm 260 dump trucks from the loading point to a disposal distance of 750 meters.The problem that occurs is that the production of loading equipment and transportation equipment has not been fulfilled so that the production target has not been reached. Not achieving production due to the amount of work time wasted due to work barriers, both avoidable and avoidable obstacles.With these constraints, it will reduce the effective working time causing low work efficiency.Efforts to increase production can be done by increasing effective working time, available working time and increasing the number of transportation equipment to become four dump truck hino fm 260 units with production from 23.351,78 bcm / month to 36.571,82 bcm / monthWith the improvement of effective working hours and increased production from the increasing number of transportation equipment, the production target is achieved.To be able to achieve the production target, it is better to monitor the work time that has been set in order to prevent obstacles that occur during work and the need to calculate the standard time barriers, so as to facilitate control.Keywords:Overburden, work efficiency, effective working hours.Abstract.PT. Allied Indo Coal Jaya is one of the mining companies located in the Parambah area, sawahlunto. In coal mining activities, PT. Allied Indo Coal Jaya uses open pit mining methods.PT. Allied Indo Coal Jaya targets overburden production for the eastern central pit at 35,000.00 bcm/month. Mining process for overburden material using mechanical equipment 1 komatsu pc 300-8 excavator unit with 3 hino fm 260 dump trucks from the loading point to a disposal distance of 750 meters.The problem that occurs is that the production of loading equipment and transportation equipment has not been fulfilled so that the production target has not been reached. Not achieving production due to the amount of work time wasted due to work barriers, both avoidable and avoidable obstacles.With these constraints, it will reduce the effective working time causing low work efficiency.Efforts to increase production can be done by increasing effective working time, available working time and increasing the number of transportation equipment to become four dump truck hino fm 260 units with production from 23.351,78 bcm / month to 36.571,82 bcm / monthWith the improvement of effective working hours and increased production from the increasing number of transportation equipment, the production target is achieved.To be able to achieve the production target, it is better to monitor the work time that has been set in order to prevent obstacles that occur during work and the need to calculate the standard time barriers, so as to facilitate control.Keywords:Overburden, work efficiency, effective working hours.

Kajian Teknis Kinerja Alat Transport Rubber Belt Conveyor pada Pengiriman Batu Kapur ke Storage Pabrik di Departemen Tambang PT. Semen Padang Ilhami Putra; Tamrin Kasim; Mulya Gusman
Journals Mining Engineering : Bina Tambang Vol 3, No 3 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

After doing the observation at PT. Semen Padang, the authors obtained data RKAP (Work Plan and Corporate Budget) of 8,064,608 ton/year and limestone production realization of 7,563,049 ton/year with production percentage 93.8% in 2017. Based on the observation data, it can be seen that limestone mining production target is not always achieved. It is necessary to evaluate the causes of non-achievement of production targets. This can be interpreted that there are problems in the unit crushing and conveying. The problem that often happens is the conveyor belt transportation. PT. Semen Padang itself currently has 3 units of Lime Stone Crusher (LSC). From 3 units of LSC (LSC II, LSC IIIA and LSC IIIB), the total belt conveyor operating on the LSC is 23 belt with different belt width. So also with the speed of each belt is different, depending on the ability of the gearbox mounted on each - each conveyor belt motor. From RBC A2J05 calculation has actual productivity value 813,97 tons/hour, RBC A2J06 has actual productivity value 869,56 tons/hour RBC A4J12P has actual productivity value 1,115,72 tons/hour RBC A1J02 has actual productivity value 1,352,98 tons/hour RBC A1J12B has actual productivity value 1,465,45 tons/hour, RBC A4J14 has actual productivity value 1,091,99 tons/hour. After performing RBC A2J05 performance optimizer, RBC A2J06, RBC A4J12P, RBC A1J02, RBC A1J12B and RBC A4J14 according to gearbox's maximum capability, the A4J12P belt productivity, A1J12B belt, A4J14 belt is able to accommodate limestone delivery, while belt A2J05, belt A2J06 and the A1J02 belt is still unable to accommodate limestone delivery production in December 2017Keywords: Crushing, Conveying, Belt conveyor, Limestone, Gearbox

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