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All Journal Jurnal Pengabdian Kepada Masyarakat Universitas Bangka Belitung PROMINE Jurnal GEOSAPTA IKRA-ITH ABDIMAS MINERAL JAGE

Delita Ega Andini

Program Studi Teknik Pertambangan, Fakultas Teknik , Universitas Bangka Belitung

Author-ID : 5340726

Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Energy Engineering Environmental Science Materials Science & Nanotechnology Social Sciences Other

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Identifikasi Penyebaran Zona Mineralisasi Endapan Timah Menggunakan Metode Induksi Polarisasi Konfigurasi Dipole - Dipole Di Bukit Sambunggiri Kecamatan Merawang Kabupaten Bangka Rafi Sasena; Guskarnali Guskarnali; Delita Ega Andini
MINERAL Vol 4 No 1 (2019): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Tin is one of the many mining products found in the Bangka Belitung Islands region. Geophysical exploration was carried out in the Bukit Sambunggiri area, Merawang District, Bangka Regency using the dipole-dipole configuration polarization to detect polarizationel ectricity on surface of metal material and induction method to identify the distribution of tin deposit mineralization. The parameters is measuring area of 21 Ha with 6 tracks, length A, B, C is 640 meters, D, E, F is 840 meters, spacing between tracks 50 meters, spacing between electrodes 10 meters and equipment used is Multy Channel RS / IP Supersting. Processing measurement data using Res2dinv software to create 2D cross sections and Montaj Oasis for 3D cross sections. The results of resistivity and chargeability data processing of a total of six trajectories have 3 trajectories which have a clear mineralization area, that is, A trajectory is assumed to be at a distance of 250 - 350 meters and depths from 0 - 50 meters which are characterized by medium-high chargeability - 30) msec and low resistivity (<700) Ohm.m. On track D, it is estimated that there are three parts at a distance of 100 - 220 meters in depth of 50-50 meters, distance of 335 - 440 meters in depth of 50-130 meters and distance of 590 - 680 meters in depth of 50-130 meters. 430 meters at a depth of 0 - 150 meters. The results of interpretation of track A to track C are suspected to have zones of tin mineralization with secondary deposits and it is known that the mineralized zone is thought to be located below the bog iron zone with secondary tin deposits. This is due to the fact that the bog iron is hard rock like granite which is oxidized, so minerals that have a high level of resistance to weathering such as cassiterite and quartz will be released from the rock body and deposited in the lower layer. While path D to trajectory F is suspected to be the continuation of the zone of tin mineralization with primary deposits. This is presumably because the location of the mineralization area spreads between intrusion of granite rocks which have a high chargeability and resistivity value.

Evaluasi Keserasian Kerja Alat Gali Muat dan Alat Angkut Guna Pencapaian Target Produksi Batugamping 350.000 ton/bulan pada Pit 242 Bukit Karang Putih PT Semen Padang (Persero) di Kecamatan Lubuk Kilangan Sumatera Barat M.Arief Adilah; E.P.S.B Taman Tono; Delita Ega Andini
MINERAL Vol 4 No 1 (2019): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

The tendency of increasing demand for limestone as one of the raw materials for making cement, it is necessary to have appropriate mining to fulfill these needs. The importance of synchronization of loading and hauling equipments in working optimally and efficiently will influences the ability of mechanical devices in productivity. Match factors can find out the comparison of the number of loading and hauling equipment working in mining operations. Analysis of the calculation of match factors based on the circulating time of mechanical devices and the number of devices operating, data taken 30 times a month in July 2018. The primary data such as; circulation time of mechanical devices, resistance factors, bucket and vessel real capacity, effective working time of devices and number of devices, while secondary data such as; devices specifications, devices and operator work time, layout maps, rainfall and company production targets. The research method used is the calculation and analysis of quantitative data on factors that influence the ability of mechanical devices in production. The production target for limestone mining in pit 242 is 350,000 tons / month using a Hitachi ex 2500-6 Excavator unit synchronized with five units of Dumptruck Komatsu HD 785-7. Current devices production capability is 262,198.66 tons / month with a value factor of 0.80. The problem that occurs is not yet achieved the planned production target, this is due to the still low effective working time and work efficiency as a result of existing constraints. Efforts to increase production can be done by improving the effective working time of initially 637.99 minutes per day to 707.30 minutes per day or 81.29% of the total available working time, adding the number of bulk filling to 6 times and adding transportation equipment as many as two units, so that production increased to 361,415.82 tons per month and the value of the match factor for mechanical devices increased to 0.96.

Evaluasi Teknis Pengolahan Batu Granit Untuk Pencapaian Target Produksi 40.000 Ton/Bulan Pada PT Bumiwarna Agung Perkasa Di Desa Air Mesu Timur Bangka Tengah Reza Reza; E.P.S.B Taman Tono; Delita Ega Andini
MINERAL Vol 4 No 1 (2019): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

PT Bumiwarna Agung Perkasa, abbreviated as PT BWAP has a crushing plant which is divided into two units, namely primary crusher and the secondary crusher unit. Granite stone crushing plant of PT BWAP has production target 40.000 tons/month, but the production target has not been achieved, which 15.185,21 tons on June and 23.406,94 tons on July 2018, because there are production barriers which cause the available work of these two units to reduce and improve production targets, therefore to achieve production targets, evaluation of the demolition plant is needed. The method used in this study is the tool availability method. The data needed is the speed of feed raw material, tool working time, tool standby time and the weight of product samples taken on the conveyor belt. The main calculation of the primary primary crusher unit is very low at 32,67 % with a total production of only 26.940,20 tons/month and the secondary crushing unit is also very low at 42,45 % with a total production of 20.424,92 tons/month. After repairs, the working efficiency of the primary crusher unit increased to 75,69 % and the work efficiency of the secondary crusher increased to 78,15 % and to increase feeding to the secondary crusher unit, activating the two vibro feeders, so that the feed increased from 190,34 tons/hour to 260,06 tons/hour and the final production of crushing plant increased to 53.352 tons/month.

Analisis Keberhasilan Reklamasi berdasarkan Keputusan Menteri Energi dan Sumber Daya Mineral Nomor 1827 Tahun 2018 pada Lahan Bekas Tambang Air Jelitik 3 PT TIMAH Tbk Kabupaten Bangka Guskarnali Guskarnali; Regita Kasih Parenty; Delita Ega Andini
MINERAL Vol 4 No 2 (2019): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

PT Timah Tbk is a mining industry company which produces the tin metal. A mining former area which is chosen as the research location is Lahan Air Jelitik 3. This research aims to analyze the success of Lahan Air Jelitik 3’s reclamation based on Matrik 16 and Matrik 17 of Keputusan Menteri Energi Sumber Daya Mineral Nomor 1827 Tahun 2018. The research starts with collecting the primary data which consists of 43 and 29 coordinate points of Lahan Air Jelitik 3’s adjustment and revegetation, the length and width of 22 erosion in Blok 1, 24 erosion in Blok 2 and 4 landslide in both blocks, the height and diameter of 35 primary plants and the length of 5 cover crops. Those primary data and secondary data are processed by calculating the broad realization of Lahan Air Jelitik 3’s adjustment and revegetation, the amount of plants, the average of plant’s height and diameter, the stability of area and valuating the success of adjustment area, the success of revegetation, the success of last completion based on Matrik 16, also calculating the success reclamation value based on Matrik 17. The result of data processing shows the success value of adjustment and hoard area is 0.5, top soil’s spreading is 0.91, erosion and sedimentation’s control is 0, cover crop’s revegetation is 0.86, fast growing plant’s revegetation is 0.1765, local plant’s revegetation is 0.726, acid mine drainage’s management is 0, plant’s closure is 0.1059 and plant’s maintenance is 0.333. The reclamation’s success percentage 50.65% in Lahan Air Jelitik 3 PT Timah Tbk shows that the reclamation in that area is not good enough and the area needs improvement especially in plant’s maintenance, erosion and sedimentation’s control and acid mine drainage’s management.

Analisis Pengaruh Perubahan Nilai Total Moisture Dan Ash Content Terhadap Nilai Kalori Batubara Di Unit Pelabuhan Pt Bukit Asam Tbk Tarahan Bandar Lampung Alldino Hernanto; Janiar Pitulima; Delita Ega Andini
MINERAL Vol 5 No 1 (2020): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

The coal industry emphasizes the quality of coal because quality will always be directly related to consumers and the company's revenue because the higher the quality of coal, the more expensive the selling price of coal, therefore this research was conducted to determine the difference in coal quality in railroad cars (demolition) and when analyzing for stockpile, the effect of total moisture and ash content on coal calories and the factors causing these changes. In this study, qualitative and quantitative methods were used where the steps taken in this research were sampling in the railroad car and in the stockpile and then using the proximate analysis and analysis of coal calories from the analysis and correlation and regression analysis to determine the effect of total moisture and ash content. against coal calories. The proximate analysis of the coal samples is disassembly total moisture which is 8.49% ar, in the stockpile, which is 10.32 % ar ash content demolition which is 5.37, in the stockpile which is 8.62 % ar and the calorific value of demolition is 7181 cal/gr, in the stockpile that is 6800 kal / gr so that each of the total moisture parameters, ash content and calorific value changes by 1.40 % ar, at 3.25 % ar, and by 400 Kal / gr. Based on the regression results, the total effect of total moisture and ash content on the first calorie each increase of 1 % ar the total moisture value will reduce calories by 123.36 cal/gr, each increase of 1 % ar the value of ash content will reduce coal calorific value by 78.76 cal/gr. The change in value is due to the occurrence of contamination in the stockpile area, the occurrence of swabakar in the stockpile, and the influence of high rainfall on coal

Analisis Pengaruh Geometri Jalan Tambang Dari Front Penambangan ke Stockpile Terhadap Keselamatan Kerja PT Caritas Energi Indonesia Sarolangun Jambi Rika Fitriani; Guskarnali Guskarnali; Delita Ega Andini
MINERAL Vol 5 No 2 (2020): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

PT Caritas Energi Indonesia (CEI) is a company engaged in coal mining in Sarolangun Jambi. Based on the work accident data in the last 5 years of PT Caritas Energi Indonesia on the hauling coal getting road using dump truck transport Equipment Scania 380 P that resulted casualty and inflicted loss for the company both in terms of equipment repair and treatment of victims. The method on this research is to use quantitative data to calculate the width of straight road for sixty one segments, the width of bend road for fourteen segments, calculating the superelevation for fourteen segments, calculating hauling road slope (grade) for sixty one segments, calculating the cross slope for sixty one segments, analyzing the effect of road geometry on Occupational Health and Safety. The width of the straight road is 7 m for one line and 11 m for two lines, all segments were qualified, except Segment 0+400, Segment 0+700, Segment 1+600, thereforeit is necessary to increase the width of road to fit the standard, the width of the bend roadis 8 m for a single line and 13 m for two lines, all segments were qualified, exceptSegment 0+500, Segment 1+000 and Segment 4+100, superelevationbased on standard is 4%, not all of the superelevations were qualified so it needs to increase the width of the bend road so that it might avoid the centrifugal force while passing through the bend, all the grade of segmentswere qualified. PT Caritas Energi Indonesia didn’t have cross slope so the company needs to pay attention and make cross slope according to the standard of 40 mm/m. The geometry of the mining road of PT Caritas Energi Indonesia weren’t qualified, it might effectedwork accident so that it needs improvement accordance with standards

Perencanaan Sistem Pemompaan pada Penambangan Timah Primer Shaft Lacat 4 Pt Menara Cipta Mulia Kelapa Kampit Belitung Timur Aryuni Yusra Hamid; Delita Ega Andini; Haslen Oktarianty
MINERAL Vol 6 No 1 (2021): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

This research was conducted to redesign the pumping system in the air drying process within a maximum of 25 days. The method used is descriptive and quantitative methods with actual data in the form of pressure and suction pipe elevation, pipe length and diameter, catchment area, actual discharge and pump head, location coordinates.The runoff discharge is 1.89 m3 / s, is prevented from entering the mine area by creating a channel with discharge flow of 2.12 m3 / s. The total volume on Shaft Lacat 4 is 34,591.7 m3 . The pump at a depth of 20 m has a discharge of 229.37 m 3 / hour, while a depth of 28 m has a discharge of 210.73 m3 / hour. Assuming the ground water is 200.64 m3 / hour, the addition of one pump with a discharge of 36 m3 / hour so that the drying time for 24 days is 11.8 hours. Production is stacking the sump of 1 x 1 x 1.5 m, making a channel with dimensions of 10 cm x 10 cm.

Kajian Teknis dan Biaya Kegiatan Rehandling Batubara PT Bukit Asam Tbk Tanjung Enim Sumatera Selatan Rahmad Tanjung; Janiar Pitulima; Delita Ega Andini
MINERAL Vol 6 No 1 (2021): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

The East Block Muara Tiga Besar Utara mining system uses Shovel and Trucks where the digging stage uses excavators and bulldozers and the transport stage uses a dump truck. Coal production target of Muara Tiga Besar Utara Block Timur in July is 300,000 tons and August is 294,000 tons. The method used in this research is quantitative data analysis method by calculating the productivity of digging and transporting tools, analyzing the technical implementation of coal rehandling activities and analyzing the cost of coal production and rehandling activities. The results of this study obtained the productivity of PC 400 Lc excavator304.35 tons/hour, bulldozer D 375A of 674.61 tons/hour and Hino FM 320FI dump truck equipment of 37.06 tons/hour, the cost of coal production in July is IDR 13,772,009,648.00, in August IDR 13,495,592,315.10 and the cost of coal rehandling activities is IDR 160,685,158.30/month. Based on the cost of coal production and the cost of coal rehandling activities, it can be analyzed that there was a decrease in production costs between July and August due to a decrease in mining production targets in anticipation of coal rehandling activities.

Evaluasi Sistem Penirisan Tambang di PT Vitrama Properti Desa Air Mesu Kabupaten Bangka Tengah Riztia Ramadhanti; Delita Ega Andini; Haslen Oktarianty
MINERAL Vol 6 No 1 (2021): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

PT Vitrama Properti applies mine dewatering system by making open channel. The open channel got silting because many solid particles have deposited causing the mine road become flooded. The method used is quantitative method by evaluating and analyzing dewatering system. The data taken is in the form of coordinate data, actual discharge, channel dimensions and the time for sediment deposition on settling pond. Catchment area is 42.4 ha. Based on the calculation of rainfall data and rainfall analysis with the gumbell method, the maximum planned rainfall value is 183.9 mm/day with a rain intensity is 63.75 mm/day, the maximum total discharge is 156,193.92 m3 /day or 1.8078 m3 /day. The surface width of the new channel is 1.7 m, the bottom width is 0.5 m and height is 1 m. The new settling pond dimension have total design volume of 3,292.5 m3 . The time for dredging the sediment material in the settling pond is every one or two years when the sediment material in compartment one has deposited as much as 60% of settling pond volume

Kajian Efektifitas Kerja Operator dan Kondisi Alat pada Front Penambangan Tambang Besar Pemali PT Timah Tbk Rajesta F. Wardana; E.P.S.B. Taman Tono; Delita Ega Andini
MINERAL Vol 6 No 1 (2021): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

The work efficiency value on the TB Pemali mining front in 2018 is relatively low (57.16%), This condition means it required the improvement of the work efficiency in accordance with the good mining practice. Method used in this research including preparation, collecting data and field orientation, which is then processed as follows: counting work efficiency of the dig tools for load and hauling tools in mining area front, analyzing operator performance and equipments conditions in mining area front, and analyzing work efficiency improvements. The result showing that score of current work efficiency of the dig tools for load in the amount of 62.74%, and for hauling tools in the amount of 57.68%. This result shows that low score of work efficiency in mining area front caused by large breakdown time of the hauling tools and low performance of the operator, then improvement of work efficiency is carried out by reducing the operator's variable trouble limit by 35% and reducing indent time of broke sparepart, the final score of work efficiency of the dig tools for load in mining area front is in the amount of 66.27% and for hauling tools in the amount of 66.44%

Co-Authors Aditya, Ismu Alamsyah, Muhammad Izhar Alfitri Rosita Alldino Hernanto Aryuni Yusra Hamid Bobby Bagaskara Dihan Fauzan Edwin Harsiga EPSB Taman Tono Fajar Indah Puspita Sari Ferdinand De Lessep Samosir Franto, Franto Franto, Franto Guskarnali, Guskarnali Haslen Oktarianty Irvani Irvani Irvani, Irvani Irvani, Irvani Janiar Pitulima Jeffry Reynold Silalahi Kristina Damayanti Panjaitan M.Arief Adilah Novi Herlinda Nur Annisa Oktarianty, Haslen Rafi Sasena Rahmad Tanjung Rajesta F. Wardana Ramadhan, Setiawan Regita Kasih Parenty Reza Reza Rika Fitriani Riztia Ramadhanti Silaban, Cindy Grestina Suryani Suryani

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