Bina Tambang
ISSN : -     EISSN : -
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.
Articles 203 Documents
abstrak

nata,A.Md, refky adi ( tes )

Bina Tambang Vol 1, No 1 (2012)
Publisher : Jurusan Teknik Pertambangan FT UNP

Show Abstract | Original Source | Check in Google Scholar |

Abstract

Seiring dengan perkembangan dan kemajuan teknologi yang pesat mengakibatkan kegiatan eksplorasi saat ini  menjadi terbantukan. Sebagai acuan dalam proses pemboran maka sebelumnya dianjurkan untuk melakukan penyelidikan secara geofisika yang memanfaatkan dua jenis sumber energi / sinyal yaitu yang bersifat alamiah dan jenis sumber energi / sinyal buatan yang dikirimkan kedalam bumi. Berkaitan dengan hal tersebut, untuk mengetahui gambaran struktur bawah permukaan dilakukan penelitian dengan metoda geoliostrik tahanan jenis. Metoda ini secara tidak langsung dapat memperkirakan susunan lapisan batuan di bawah permuakaan bumi.

Implementation of Crosshole Seismic Travel Time Tomography for Predicting Near-surface Geological Structure During the Develoment of SMART Tunnel in Kuala Lumpur – Malaysia

Octova, Adree ( Jurusan Teknik Pertambangan Fakultas Teknik Universitas Negeri Padang )

Bina Tambang Vol 1, No 2 (2013): Implementation of Crosshole Seismic Travel Time Tomography for Predicting Near-
Publisher : Jurusan Teknik Pertambangan FT UNP

Show Abstract | Original Source | Check in Google Scholar | Full PDF (480.789 KB)

Abstract

Abstract   A tunnel with a dual function was built in Kuala Lumpur - Malaysia during 2003 - 2008 in order to solve flood and traffic congestion problems. During the development of this tunnel, crosshole seismic travel time tomography method was implemented in order to give approximation of subsurface image beneath obstacle surface and in order to detect cavities in the front of tunnel path. This could be realized by placing sources and receivers inside 5 boreholes in  the  area  close  to  Istana  Island,  Kuala  Lumpur.  First arrival travel times are used as main input data, besides the exact  information  of  sources  and  receivers  coordinates. This  study is  devided  into three steps. The first  step  is construction of synthetic model, in which the model a 4 x 4 m2  positive and negative anomalies are positioned in the center of model, and the same aquisition configuration as used in the field is implemented in this step. This process is done in order to test the software and to know whether acqusition        configuration           could                     still                    recognize         the anomalies. The second step is applying inversion process for the real data in Malaysia. The last step is testing the resolution of tomogram by using the checker-board resolution test in order to localize the area that could be nterpreted inside the tomograms. The tomographic seismic data processing is conducted by using FAST software. The tomograms indicates cavities in several places between the boreholes. Based on the results of checker-board resolution tests, anomalies can still be identified if their sizes are at least 2 x 2 m2. As  conclusion, cross-hole seismic travel time  tomography  proves  as  a  very  good  method  in describing subsurface structure and boundary layers.   Key words: Crosshole seismic tomography, first arrival travel time, SMART tunnel.

IDENTIFIKASI TINGKAT KESERAGAMAN BATUAN HASIL PELEDAKAN DENGAN METODE KUZ-RAM DAN METODE KOEFISIEN TEKSTUR PADA FRONT I TAMBANG QUARRY PT. SEMEN PADANG

Gomis, Marchellevandra, Yulhendra, Dedi, Ansosry, Ansosry

Bina Tambang Vol 2, No 1 (2015): Jurnal Bina Tambang
Publisher : Jurusan Teknik Pertambangan FT UNP

Show Abstract | Original Source | Check in Google Scholar | Full PDF (657.363 KB)

Abstract

PT. Semen Padang is one of the greats cement producer industry in Indonesia. PT. Semen Padang has a mining business license for limestone mining at Bukit Karang Putih – Indarung, Padang City, West Sumatera. For getting limestone, PT. Semen Padang used quarry mine system and blasting technique in separating limestone from rock body.In blasting, one of success variable can be viewed from the size of fragmentation and rock uniform level. Size of fragmentation and rock uniform level can be expected with good blast geometry plan. Will be obtained good rock fragmentation, and good uniform level. From the geometry of the blasting used in PT Semen Padang, obtained rock size fragmentation up from 120 cm percentage is 7,84 % with rock uniform level 1,47 and the volume of rock explosed 126 m3 from one blast hole. The percentage of rock filtered is quite good. However, it’s not followed by rock uniform level and rock explosed volume. So that, need for changes blast geometry with ICI – Explosive Method for getting good fragmentation size, good rock uniform level and large rock explosed volume.After calculated and experimented in the site. The most suitable blast geometry is 5 m for spacing and 4 m for burden. So, we can get 210 m3 limestone from one blast hole, with size of rock fragmentation up from 120 cm is 20,92 %, and rock uniform level 1,26. Therefore, will have the impact on increasing the limestones product and rock uniform level better.

KAJIAN TEKNIS PERALATAN TAMBANG UNTUK MEMENUHI TARGET PRODUKSI BATUGAMPING 550.000 TON/BULAN PADA AREA PIT LIMIT (15,15 HA) PT. SEMEN PADANG

Oktoberen, Divo, Kasim, Tamrin, Ansosry, Ansosry

Bina Tambang Vol 3, No 1 (2018): Jurnal Bina Tambang
Publisher : Jurusan Teknik Pertambangan FT UNP

Show Abstract | Original Source | Check in Google Scholar | Full PDF (614.481 KB)

Abstract

The process of transporting limestone from Pit Limit area (15,15 ha) to the crusher unit LSC VI (Limestone Crusher VI) using a combination of 1 Excavator Hitachi 2500-6 unit with 4 units of Dumptruck Komatsu HD 785-7. The production target of limestone is 22.000 tons/day or 550.000 tons/month at Pit Limit area (15,15 Ha). Meanwhile, actual productivity of mechanical equipment is only 1.207,5 tons/hour or 18,112.5 tons/day. To realize the planned productivity improvement must be supported by the availability of sufficient mechanical tools to produce raw materials as desired. The efforts made are improve blast fragmentation to simplify the digging process of loading equipment, create a wider loading point, create a flatter haul road and less dusty, improve work efficiency and Effective Utilization (EU), optimize loading time and hauling time, and reduce dumptruck units to 3 units. Then the productivity of mechanical equipment increase to 2.064,83 ton/hour or 30.972,45 ton/day or 774.311,25 ton/month. It means the limestone production target can be achieved at Pit Limit area (15,15 ha). After improvement, the value of Match Factor between 1 unit of excavator and 3 units of dumptruck is MF = 1,1. This combination is more effectively applied than ever before is MF = 0.88.

PERENCANAAN ULANG GEOMETRI PELEDAKAN UNTUK MENDAPATKAN FRAGMENTASI YANG OPTIMUM DI LOKASI PENAMBANGAN FRONT IV QUARRY PT. SEMEN PADANG

Febrianto, Febrianto, Yulhendra, Dedi, Abdullah, Rijal

Bina Tambang Vol 1, No 1 (2014): Jurnal Bina Tambang
Publisher : Jurusan Teknik Pertambangan FT UNP

Show Abstract | Original Source | Check in Google Scholar | Full PDF (1835.218 KB)

Abstract

ABSTRACT PT. Semen Padang is a national cement company which owned IUP of limestone mining at Bukit Karang Putih, Indarung, Padang-West Sumatera. Limestone is the main composition of cement making.    PT. Semen Padang use quarry system in the limestone mining activity at Bukit Karang Putih. Limestone production accomplished by blast activity. The quality of blasting result really determine  the success of blast activity. The success parameter of blasting is the fragmentation of resulting  stone.Stone fragmentation evaluation can be done by noticed the blasting geometry. According to today actual blasting geometry, the fragmentation of stone with >100 cm size is 19 % (calculated using Software Split Desktop 3.1). It means that the fragmentation of stone resulting  <100 cm is not optimum,  so,  replan the blasting geometry design in order to optimize the distribution of blasting fragmentation by using R. L. Ash (desain I), ICI-Explosive formulation (design II) and the combination of ICI-Explosive formulation by fitting the field condition(design III).According to the calculation of actual fragmentation using Software Split Desktop, then design II  of blasting geometry is choosen. Based on the fragmentation  percentage of stone with >100 cm, geometry design II (0 %) compare with geometry design III (4 %), however, based on the flying rock resulting from blasting, geometry design III is recommended to be set as a new design. According to the change of the geometry, the fragmentation reduction of stone resulting from blasting >100 cm is 15 %.  Keyword: Blasting Geometry Desain, Limestone Fragmentation. ABSTRAK PT. Semen Padang merupakan perusahaan semen nasional yang memiliki IUP Penambangan batu kapur di Bukit Karang Putih, Indarung, Padang - Sumatera Barat. Batu kapur merupakan bahan baku utama untuk pembuatan semen. Kegiatan penambangan batu kapur di Bukit Karang Putih oleh PT. Semen Padang dilakukan dengan sistem quarry. Kegiatan produksi batu kapur dilakukan dengan kegiatan peledakan. Kualitas dari hasil peledakan peledakan sangat menentukan keberhasilan kegiatan peledakan. Parameter keberhasilan dari suatu kegiatan peledakan adalah fragmentasi batuan hasil peledakan.Evaluasi fragmentasi batuan hasil peledakan dapat dilakukan dengan memperhatikan geometri peledakan. Berdasarkan geometri peledakan aktual saat ini, didapatkan fragmentasi batuan yang berukuran >100 cm sebesar 19 % (perhitungan menggunakan Software Split Desktop 3.1). Hal ini menunjukkan fragmentasi batuan hasil peledakan <100 cm belum optimum. Selanjutnya dilakukan perencanaan ulang geometri peledakan untuk mengoptimumkan distribusi fragmentasi peledakan dengan rumusan R. L Ash (desain usulan I), ICI-Explosive (desain usulan II) dan kombinasi rumusan ICI-Explosive dengan penyesuaian kondisi lapangan (desain usulan III).Berdasarkan hasil perhitungan fragmentasi aktual menggunakan Software Split Desktop, maka dipilih geometri peledakan usulan III. Dari segi persentase fragmentasi batuan berukuran >100 cm, geometri usulan II (0 %) dibandingkan dengan geometri usulan III (4 %), akan tetapi dari segi lemparan batuan hasil peledakan (flying rock) geometri usulan III lebih direkomendasikan untuk ditetapkan menjadi desain baru. Dari perubahan geometri tersebut, didapatkan penurunan fragmentasi batuan hasil peledakan >100 cm sebesar 15 % . Kata Kunci: Desain Geometri Peledakan, Fragmentasi Batu Kapur.

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

Idham, Ikhwan, Sumarya, Sumarya, Octova, Adree

Bina Tambang Vol 3, No 1 (2018): Jurnal Bina Tambang
Publisher : Jurusan Teknik Pertambangan FT UNP

Show Abstract | Original Source | Check in Google Scholar | Full PDF (955.942 KB)

Abstract

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

Analisis Kestabilan Lereng Studi Kasus Kelongsoran Ruas Jalan Sicincin-Malalak KM 27.6 Kecamatan Malalak, Kabupaten Agam

Aini, Qiratul, Kopa, Raimon, HAR, Rusli

Bina Tambang Vol 3, No 2 (2018): Jurnal Bina Tambang
Publisher : Jurusan Teknik Pertambangan FT UNP

Show Abstract | Original Source | Check in Google Scholar | Full PDF (831.248 KB)

Abstract

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

PERENCANAAN REKLAMASI LAHAN BEKAS PENAMBANGAN PIT D1 PT. AMAN TOEBILLAH PUTRA SITE LAHAT SUMATERA SELATAN

Sari, Eka Retno, Ansosry, Ansosry, Prabowo, Heri

Bina Tambang Vol 2, No 1 (2015): Jurnal Bina Tambang
Publisher : Jurusan Teknik Pertambangan FT UNP

Show Abstract | Original Source | Check in Google Scholar | Full PDF (358.197 KB)

Abstract

The steps of the mining activities in PT. Aman Putra Toebillah includes the activities of land clearing, stripping the ground cover, the exploitation of coal, transporting, processing and marketing of coal. After the mining is finished, the ex of mining area will leave an opening hole. Therefore any company of mine obligatory to implement reclamation of ex mining area to maintain environmental sustainability. Based on Ministerial Regulation Number 7 Year 2014, reclamation are activities during of  mining to organize, restore, and improve the quality of the environment and the ecosystem to the function. Therefore, it takes a good planning, so the rate reclamation success can be realized.Mining avtivities include the arrangement of land reclamation. The Inpit Dump will be covered with land cover. Then on the top layer is covered with top soil as a medium growing plants. After the arrangement is finished then the Inpit Dump will be replanting (revegetation). To prevent the erosion, we made waterways, do care and give limes to settling pond to prevent the formation of acid mine water.Based on calculations of planning reclamation and revegetation, direct costs for reclamation activities and revegetation on the Pit D1 PT. Aman Toebillah Putra amount to Rp RP 14.104.226.892,00 and indirect costs amount to Rp 1.339.901.555,00. Then the total cost of reclamation and revegetation on the site amount to Rp 15.444.128.447,00.

ESTIMASI CADANGAN INSITU MELALUI KEGIATAN INPIT DRILL PADA BUKIT EVEREST, CHEROKEE, DAN STRADA DI PT ANTAM (Persero) Tbk UBPN SULTRA

Yurnia H, Fathonie, Gusman, Mulya, Octova, Adree

Bina Tambang Vol 3, No 2 (2018): Jurnal Bina Tambang
Publisher : Jurusan Teknik Pertambangan FT UNP

Show Abstract | Original Source | Check in Google Scholar | Full PDF (694.208 KB)

Abstract

Penelitian ini membahas tentang pengoptimasian cadangan insitu nikel laterit pada Bukit Everest, Cherokee, dan Strada di PT ANTAM (Persero) Tbk UBPN SULTRA. Karena pada lokasi tersebut berdasarkan laporan penelitian terdahulu adanya perbedaan hasil estimasi cadangan berdasarkan klasifikasi kadar yaitu bijih dengan kadar Ni < 1.3 % tergolong pada kualitas waste, bijih dengan kadar Ni 1.3 -1.5 % tergolong kualitas limonit, bijih dengan kadar Ni 1.5 – 1.8 % tergolong kualitas Low Grade Saprolite Ore (LGSO), bijih dengan kadar Ni 1.8 – 2.0 % tergolong pada kualitas Hight Grade Saprolite Ore (HGSO), sedangkan untuk bijih dengan kadar Ni > 2.0 % akan mempertimbangkan kadar Fe dari bijih tersebut. Apabila Fe < 14 % maka tergolong kedalam HGSO dan jika Fe > 14 % maka tergolong LGSO dari kegiatan eksplorasi rinci dan inpit drill. Oleh karena itu perlu dilakukan pengkajian mengenai hal-hal yang menyebabkan perbedaan estimasi cadangan serta nilai ekonomis kegiatan inpit drill sehingga didapatkan benefit dari kegiatan inpit drill. Metode penelitian yang diterapkan adalah deskriptif kualitatif yang bersifat pembuktian dengan memadukan beberapa data yang meliputi kajian pustaka, data pengeboran, dan data analisis kadar serta nilai ekonomis dari kegiatan inpit drill. Berdasarkan hasil penelitian yang dilaksanakan dapat disimpulkan beberapa hal berikut. Pertama, Perbedaan yang signifikan terjadi pada kualitas LGSO dan HGSO karena jumlah cadangan yang memiliki nilai ekonomis dan dijadikan sebagai umpan pabrik yaitu HGSO dan LGSO pada kegiatan inpit drill lebih banyak dibandingkan pada kegiatan eksplorasi rinci.Kata Kunci: Cadangan, Eksplorasi Rinci, Inpit Drill, Nikel, Nilai ekonomis

PERENCANAAN REKLAMASI DI TIMBUNAN MAHAYUNG PT.BUKIT ASAM (PERSERO) TBK, TANJUNG ENIM, SUMATERA SELATAN

Sari, Afriyanti Puspita, Yunasril, Yunasril, Bahri, Syamsul

Bina Tambang Vol 2, No 1 (2015): Jurnal Bina Tambang
Publisher : Jurusan Teknik Pertambangan FT UNP

Show Abstract | Original Source | Check in Google Scholar | Full PDF (427.234 KB)

Abstract

Mining activities conducted in PTBA is directed to undertake the mining environmentally.Mining activities conducted include exploration, land clearing, stripping topsoil, excavation ofoverburden ,coal mining, transporting, processing and marketing of coal. Reclamation is theactivities that are performed throughout the stages of the mining effort to organize, restore, andimprove the quality of the environment and the ecosystem to function returns appropriateallocation. The success of reclamation activities according to Regulations the Minister ofMineral Resources number 07 2014 covering the activities of the arrangement of land, thepromised land of tops (top soil), water management and erosion control, revegetation and theprevention and mitigation of acid mine water. All activities on the reclamation process aboverequires considerable cost and its implementation should be planned so that the cost have to beeffective and efficient.Technical planning of reclamation on the outside dump Mahayung 2015 designed byrearranging the land by using the method of encapsulation, perform the promised land of tops toimmediately do revegetasi, make and take care of the channel that is in a outside dump ofMahayung to prevent erosion and maintain the water and add to the compartment on a pool ofMud and Precipitator liming regularly to prevent the occurrence of acid mine water. The cost forthe reclamation activities at the outside dump of Mahayung is the total cost of reclamationconsists of two that is direct costs and indirect costs. Direct costs for reclaiming the year 2015amount Rp 39.565.434.558,- and indirect costs Rp 3.758.716.283,- Then the total cost ofreclaiming the year 2015 amount to Rp 43.324.150.841

Page 1 of 21 | Total Record : 203