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All Journal Jurnal Pendidikan Teknologi dan Kejuruan Jurnal Ilmiah MTG Jurnal Pengabdian Kepada Masyarakat Universitas Bangka Belitung Jurnal Teknologi Pertambangan PROMINE Jurnal Ilmu Administrasi Publik (JIAP) Al Qalam: Jurnal Ilmiah Keagamaan dan Kemasyarakatan JPPI (Jurnal Pendidikan Islam Pendekatan Interdisipliner) Jurnal Teknologi Pertanian Proceedings of the International Conference on Applied Science and Health EDUKA : Jurnal Pendidikan, Hukum, Dan Bisnis JOURNAL EDUCATIONAL OF NURSING(JEN) Jurnal Ilmiah Kebidanan (The Journal Of Midwifery) JPK: Jurnal Proteksi Kesehatan Mitra PGMI: Jurnal Kependidikan MI Excellent Midwifery Journal MINERAL Journal of Environmental Health and Sanitation Technology Samawa (sakinah, Mawaddah Warahmah) Harmoni Pendidikan: Jurnal Ilmu Pendidikan Jurnal Intelek Dan Cendikiawan Nusantara

Mardiah Mardiah

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Author-ID : 1592067

Religion Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Public Health Social Sciences Other

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Evaluasi Produktivitas Alat Gali-Muat dan Alat Angkut untuk Pengupasan Tanah Penutup Bulan Agustus 2016 Di Pit 3 Timur Penambangan Banko Barat PT Bukit Asam (Persero) Tbk Muhammad Arrofah; Mardiah Mardiah; Janiar Pitulima
MINERAL Vol 2 No 2 (2017): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

PT Bukit Asam (Persero), Tbk is a state-owned enterprise that operates in mining industry, particularly coal mining that has 4 main mining location. One of them is an east pit 3 of Banko Barat mining managed by PT SumberMitra Jaya. Mining process is exploited by using open pit methode which excavate overburden material using load-haulage equipment and transport system. Load-haulage equipments are used excavate, and to load overburden material, and transport system are used to carry overburden in disposal. This whole processes known as mechanical mining system. However, the actual condition of load-haulage productivity was only 84.56 % compared to determined target that caused overburden remova volume not to be achieved in amount of 15.44 %. Otherwise, evaluation of factors that affected performance of load-haulage equipment and transport system need to be conducted. Evaluation was conducted by calculating productivity, work efficiency, match factor of equipment, and load–haulage geometry. The data collected was cycle time, effective utilization, kind of material overburden and load-haulage geometry to get the value. Then, the collected data processed by using formula of mechanical soil movement and analysed based on literatures that related to the problem. The causing factors of load-haulage productivity in not achievement of determined target after evaluation conducted was low of work efficiency, amount of delay time in the amount of 1.19 minute caused by narrow transport roads, and low of match factor of equitment in the amount of 0.92. The alternatives that can be carried out to increase load-haulage productivity is increasing effective work time and widing transport road. Effective work time of transport system should be leveled up from 15.237 hour to 15.682 hour in fleet I and fleet II, and in fleet III should be leveled up from 14.122 hour to 14.567 hour. Thus, the total of transport system productivity will increase to 576,503.83 bcm/month from 486,247.59 bcm/month.

Optimalisasi Perencanaan Tambang Berdasarkan Pemilihan Kebutuhan Alat Berat Untuk Mencapai Target Produksi di Tambang Besar (TB 2.2) Tempilang Front 1 Kec. Tempilang Mitra PT Timah (Persero) Tbk Supriyadi Supriyadi; Mardiah Mardiah; Abrianto Akuan
MINERAL Vol 2 No 2 (2017): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Mining activities in TB 2.2 TempilangSite was conducted by Bahtera Sarindo Utama as a partner of PT Timah (Persero) Tbk.The method and technology used in mining site was Mechanical Mine as an alternative of conventional open pit mining which had been applied to overcome a great lack of hydraulic mining. There were several problems occurred in tin mining activities of TB 2.2 Tempilang included less of cycle time of gravel pump per day due to several problems that appeared in mine site such as gravel pump were often broken, Front Work landslides, so the production activity was inefficient. Mine planning of Mining mechanical methods plan Mechanics in TB 2.2 TempilangSite had production target of 320 m3 / h or 5,760 m3 / day. Therefore it was necessary to optimize the mining design to make it more efficient. The study included the election needs of load haulage equipment and conveyance based fleet to achieve production targets.Based on the results obtained, the need of equipment in hydraulic mine method for IDH work Front 1 to achieve production target was4 units of hydraulic pump, 4 units of gravel pump, 3 units of Excavators and 4 units of Articular Dump Truck with the total production of 5,976 m3 / day, and if using mechanical mine methodthe needs of load haulage equipment and conveyance for IDH removal was 1 fleet, 2 units of CAT 320D2 Excavator and 6 units of CAT 740B ADT with a total production of 6588.00 m3 / day with the production rate at 9.20 % greater than hydraulic mine and fleet 2 such us 1 unit of 345D CAT Excavator and 6 units of CAT 740B ADT 6 with the total production of 6468.12 m3/ day with the production rate at 7.60% greater than hydraulic mine.Based on the results obtained, mine lifetime of TB 2.2 TempilanFront 1 was 6,13 years using hydraulic mine method, 5,57 years for Mechanical mine of fleet 1 and 5.67 years for fleet 2. From these results suggested, that would better to use mechanical mine method in the removal of IDH in TB 2.2 Tempilang. With the availability of load haulage equipments and conveyance would counduct with fleet 1.

Co-Authors A. Fajri Nur Islami Abrianto Akuan Adelia Ningsih Naini Adelina Sembiring ASRIANA KIBTIYAH Budi Astyandini Fajrin, Rafika Fatma Jama Gunawan Nusanto Guskarnali, Guskarnali Hajimi Hajimi Hanung Anggoro Imarina Imarina Ince Marni Janiar Pitulima Kiki Angreini Jusman Lisa Putri Damanik Mahmud, Basri Muhammad Arrofah Muhammad Rahmatul Burhan Nur Ilah Padhila Nurul Aisyah Oktarian Wisnu Lusantono R. Marwita Sari Putri Refdinal Refdinal Ridwan Ridwan Salbiah K. Samsualam, Samsualam Siska Suci Triana Ginting SITTI NURMADIA Sulistiadi Wahyu Sunarti Sunarti Supriyadi Supriyadi T. YOHANA AYU Untung Sukamto Yusril Yusril

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