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All Journal Journals Mining Engineering : Bina Tambang Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri

Bambang Heriyadi

Universitas Negeri Padang

Author-ID : 2720236

Computer Science & IT Earth & Planetary Sciences Engineering Industrial & Manufacturing Engineering

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Perencanaan Jalur Ventilasi dan Sistem Jaringan Ventilasi Udara Pada Tunnel Mainshaft Auxiliaryshaft Tambang Bawah Tanah PT. Allied Indo Coal Jaya Sawah Lunto Noval Satria; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 6, No 3 (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.v6i3.112909

There are two kinds of underground mining systems which are natural ventilation systems and mechanical ventilation systems. The air quantity at the front of J6 and J7 does not meet the permitted standards in the Minister of Energy and Mineral Resources RI No. 1827 K / 30 / MEM / 2018. The air quantity at the front of J6 is 1,136m3 / second the air needed is 7,233 m3 / second and the amount of air in front of J7 is 1,528 m3 / second while the amount needed is at 7,167 m3 / second. At Front Junction 6, the available air demand is 1,136 m3 / sec while the air required is 7,233m3 / sec. A blower of 8.3 Kw ≈ 10.5 Kw is needed, and at the front of Junction 7 the available air demand is 1,528 m3 / s, the air needed is 7,167 m3 / s for the air demand when mining activities are needed, the blower power is 8.9 Kw ≈ 10,5 Kw. New air circulation modeling design using Kazemaru software.

Analisis Balik Kestabilan Lereng Dengan Menggunakan Metode Bishop yang Disederhanakan Pada Area Blok Bukit Tambun PT. Cahaya Bumi Perdana, Kota Sawahlunto Rizaldi Rizaldi; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 5, No 4 (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.v5i4.109424

Abstract. In December 2019 there was an avalanche on the slope of access road to the mining site block Bukit Tambun. The avalanche resulted in a tunnel of BT 05 and an access road to the BT 04 tunnel covered with avalanche material. Analysis of the security Factor values (FK) and the geometry recommendations of slopes using the Bishop Simplified method. The result of the research is that the first avalanche on the block Bukit Tambun area is a field avalanche (circular failure) with the direction N140oE/70o. Second, The physical and mechanical properties of the Claystone Rocks test get the original fill weight of 14.14 KN/m3, the saturated content weight value of 18.6 KN/m3, the cohesion (c) = 7.1 kN/m2 and the inner sliding angle (φ) = 73.55 °. Third, recommend the geometry of slopes for dry conditions with a single slope angle of 65° while the overall slope angle of 37°, for the geometry of the slope in a saturated condition with a single slope angle of 25° while the overall slope angle of 18° and a condition slope of a half saturated conditions with a single slope angle 34° while the overall slope angle of 23°. Keywords: The Field of Diskontinu, Physical and Mechanical Properties of The Rocks, The Geometry of Slope, Reverse Analysis, Bishop Simplified, The Security Factor.

Evaluasi Sistem Penyanggaan pada Tunnel THC 04 CV Tahiti Coal Menggunakan Klasifikasi RMR Wahyu Marta Novri; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 6, No 4 (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.v6i4.114007

Excavation of tunnels in underground mines is a fairly complex job, because it will result in changes in the balance of rock conditions that can cause failure. Therefore, a good geotechnical analysis is needed to provide proper treatment of the excavated rock.Based on the results of laboratory test, physical properties for siltstone is an average natural density of 2,4 gr/cm3 and for coal is an average natural density of 1,24 gr/cm3, and mechanical properties of PLI for siltstone is an average of 1,4 MPa and for coal is an average of 0,45 MPa. From the result of the Bieniawski-1989 RMR analysis, the rocks on the roof and the wall has a value of 54 and include to rock mass class III. RMR 54 has stand up time 37 days to 3 m of span. Based on the analysis using Cemal Biron theory in 1983, the value of stress to the cap is 528,06 kg/cm2, side post is 170,19 kg/cm2, the wood clearance stress is 623,75 kg/cm2, and the wood compressive strength is 368,75 kg/cm2. The FS of cap is using 20 cm diametre of wood is 1.18, and the FS of side post is using 23 cm diametre of wood is 2,17. To make the FS stable on cap side, it needs to upgrade the size of the wood to at least 22 cm of diametre, so the FS would be 1,57 (declared safe), or reduce the distance of the support system to maximum of 1,15 m.

ANALISIS KESTABILAN LERENG UNTUK MENENTUKAN GEOMETRI LERENG PADA AREA PENAMBANGAN PIT MUARA TIGA BESAR SELATAN PT.BUKIT ASAM (PERSERO) TBK, TANJUNG ENIM, SUMATERA SELATAN Azhary Rahim; Bambang Heriyadi; Yoszi Mingsi Anaperta
Journals Mining Engineering : Bina Tambang Vol 2, No 1 (2015): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

One of few factors that should watch over in open pit mining is geotechnical on rocks lithology in mining area. Since designing of slope geometry there are many factors so thus factors must be input as a parameter to determine slope stability.The type of dominant failures occur in Muara Tiga Besar Area are wedge and planar sliding which caused by discontinuity and sheer slope orientation. This research used stereographic method to determine type and aim of failure based on discontinuity and slope orientation. Stereographic analyses result will conduct and optimal slope angle. Furthermore modeling simulation will be done for single and overall slope to determine its geometry and factor of safety based on geotechnical data such as cohesion and friction angle for each materials.Based on stereographic analysis to overburden A1 single slope angle are conducted 41o , 40o, 42o, 39o, and for lower C is conducted 41o, 42o, 41o, and 42o. in order to get an optimal single slope then it must be conducted from simulation and the result for overburden A1 is 47o as optimal slope angle with factor of safety amount of 1.302 for saturated condition and dry condition 1.727 and for lower C the result of optimal slope angle is 43o, whose factor of safety is 1.305 for saturated condition and 1.886 for dry condition. Afterwards modeling simulation is been done to overall slope in A-A’ and B-B’ section. Factor of safety in highwall area is 1.323 with 27.4o overall slope angle and 155 meters high. In other hands, factor of safety in lowwall area is 1.318 with 25.2o overall slope angle and 192 meters high.

Analisis Pengaruh Kecepatan Aliran Udara Terhadap Penurunan Temperatur Efektif Pada Alat Simulasi Ventilasi Tambang Bawah Tanah Dhoni Syaputra; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 4, No 1 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. In underground mines the ventilation system is very important in terms of meeting the air respiratory needs of workers, cleaning dirty air, toxic gases, concentrating dust, regulating heat and humidity in the mine. The problem that often occurs in underground mining, especially in Sawahlunto is the high temperature temperature on the workers' mining front, so that the safety and comfort of the workers is no longer in line with the rules set by the Kepmen 555K/MPE/1995.To meet the standards of effective air and temperature requirements at the mining front, the author tries to conduct an experiment with an underground mine ventilation simulation tool located at the FT .UNP mine laboratory, the experiment was carried out by flowing different air flow velocities using suction fan, blow fan 16 ", fan blows 20" variation of 3 speed without addition of water and fan blows 20 "variation 3 speed by setting the addition of minimum, medium and Maximum water to the underground mine ventilation simulation tool. Based on the data obtained at the measurement points using an Anemometer and Digital Sling Psychometer, the conclusion is that with an average increase in air flow rate of 30%, it can reduce the temperature of the effective temperature by 15%. In this study, the lowest temperature is at point B, in experiments using a 20 "high speed blow fan with setting the maximum water addition, ie 15.40 C (down from 19.80 C, or 28.5% using fan type and the same speed, but without the addition of water) with air flow velocity of 5.22 m / sec, (up from 3.20 m / sec, or 63% using the fan type and the same speed, but without additions water) Keywords: Ventilation System, Temperature, Difference in Air Flow Speed, Water Addition Setting, Effective Temperature

EVALUASI GEOMETRI PELEDAKAN UNTUK MENGOPTIMALKAN FRAGMENTASI PADA PENAMBANGAN BATU GAMPING DI PT. SEMEN PADANG, PROVINSI SUMATERA BARAT Febylina Valencia Agustina Rumwaropen; Heriyadi Bambang
Journals Mining Engineering : Bina Tambang Vol 6, No 4 (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.v6i4.114588

Abstract. In an industrial mineral mine, rocks are often found which are relatively hard and cannot be mined freely, so it is necessary to carry out a blasting process. The rock crushing process is carried out to reduce the size of the rock, making it easier to transport into the conveyance. Rock scavenging activities can be carried out in various ways, the method used depends on the nature and characteristics of the rock itself. The effectiveness of blasting activities is one of the benchmarks for the success of loading material which greatly affects the achievement of mining productivity targets. Blasting geometry is one thing that can be controlled. This study aims to evaluate the geometry of blasting by predicting the fragmentation of blasting results at PT. Semen Padang. Prediction of fragmentation in this study using the Kuz-Ram model and Split desktop 2.0 software. To validate the method used, the correlation coefficient (R²) and Root Mean Square Error (RMSE) will be analyzed between the actual measurement using split desktop software and the prediction method used. This study evaluates the geometry of blasting using the theory of R.L. Ash and C.J. Konya. Based on the data analysis conducted, the average percentage of escape is more than 80 cm from the calculation of fragmentation of the actual blasting results, namely 69.744% with a boulder percentage of 30.227%. Meanwhile, based on the data analysis performed, the average percentage that passes is more than 80 cm from the calculation of fragmentation of the Kuz-Ram model is 73% and the percentage retained by the Kuz-Ram model is 27%. To reduce the number of boulder percentages, it is necessary to evaluate the geometry of the blasting based on the R.LAsh and C.J.Konya theories which get the proposed geometry, namely the R.LAsh theory with a burden of 2.6 m, spacing of 3 m, hole depth of 8 m, height of ladder 7 m, column filling 3 ,4 m, stemming 2.6 m, subdrilling 1.04 m and powder factor 0.3 using the Kuz-Ram model, the percentage of boulder is 4.3%, thus the number of boulder becomes less.Keywords: Blasting Fragmentation, R.L.Ash Theory, C.J.Konya Theory, Kuz-Ram Model

Kajian Kestabilan Lereng RKAP 2018 Lokasi Penambangan Muara Tiga Besar Utara PT. Bukit Asam Tbk Tanjung Enim Sumatera Selatan Muhammad Irawan; Bambang Heriyadi; Adree Octova
Journals Mining Engineering : Bina Tambang Vol 3, No 4 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. This research was carried out at MTBU pit mining PT. Bukit Asam Tbk. With the occurrence of landslides on the cross section of Y-Y 'low wall elevation +74 to +62 in the pit area of MTBU PT. Bukit Asam Tbk, it is necessary to do geotechnical studies so that the mining plan can be supported with accurate data, especially in terms of slope stability. To get the optimum geometry recommendations, as well as safety factors (FK) that are in accordance with the plan, we get the initial data Silty Claystone: Content weight (γ) = 22,19 kN / m3, cohesion (c ') = 28,14 kN / m2 and inner sliding angle (ϕ ') = 33,30 °. Silty Sandstone: content weight (γ) = 20.36 kN / m3, cohesion (c ') = 26,38 kN / m2 and inner sliding angle (ϕ') = 25,50 °. Sandy Silt: Contents weight (γ) = 19.67 kN / m3, cohesion (c ') = 32,16 kN / m2 and inner sliding angle (ϕ') = 39,11 °. Recommendation slope geometry: 1. Morgenstren-Price method based on the design results using the Geostudio Slope / W 2007 program, for each section both single slope and overall slope safety factor ≥ 1,25 which means that it is stable or safe. 2. The Hoek and Bray method, 1981 carried out an analysis of the back slope of the single slope high wall elevation +74 to +62 when a landslide occurred using material input properties. After analyzing the slope stability with the analysis parameters behind Hoek & Bray (FK = 0,99), the value (FK = 0.919) is obtained. In saturated conditions, handling is needed to make the slope more gentle where the slope angle is 23,77o with the same height 12 m, so that the value (FK = 1,288) is obtained.Keywords: Slope Stability, Back Analysis, Safety Factor, Slope Geometri, Input PropertiesAbstract.This research was carried out at MTBU pit mining PT. Bukit Asam Tbk. With the occurrence of landslides on the cross section of Y-Y 'low wall elevation +74 to +62 in the pit area of MTBU PT. Bukit Asam Tbk, it is necessary to do geotechnical studies so that the mining plan can be supported with accurate data, especially in terms of slope stability. To get the optimum geometry recommendations, as well as safety factors (FK) that are in accordance with the plan, we get the initial data Silty Claystone: Content weight (γ) = 22,19 kN / m3, cohesion (c ') = 28,14 kN / m2 and inner sliding angle (ϕ ') = 33,30 °. Silty Sandstone: content weight (γ) = 20.36 kN / m3, cohesion (c ') = 26,38 kN / m2 and inner sliding angle (ϕ') = 25,50 °. Sandy Silt: Contents weight (γ) = 19.67 kN / m3, cohesion (c ') = 32,16 kN / m2 and inner sliding angle (ϕ') = 39,11 °. Recommendation slope geometry: 1. Morgenstren-Price method based on the design results using the Geostudio Slope / W 2007 program, for each section both single slope and overall slope safety factor ≥ 1,25 which means that it is stable or safe. 2. The Hoek and Bray method, 1981 carried out an analysis of the back slope of the single slope high wall elevation +74 to +62 when a landslide occurred using material input properties. After analyzing the slope stability with the analysis parameters behind Hoek & Bray (FK = 0,99), the value (FK = 0.919) is obtained. In saturated conditions, handling is needed to make the slope more gentle where the slope angle is 23,77o with the same height 12 m, so that the value (FK = 1,288) is obtained.Keywords: Slope Stability, Back Analysis, Safety Factor, Slope Geometri, Input Properties

Perencanaan Sistem Ventilasi Pada Tambang Batubara Bawah Tanah Seam C2 Di PT. Nusa Alam Letari, Desa Salak, Kecamatan Talawi, Kota Sawahlunto, Sumatera Barat. Rizka Sestiana; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 4, No 2 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. PT. Nusa Alam Lestari is one of the mining companies engaged in coal mining located in the Village of Salak, Talawi District, Sawahlunto City, West Sumatra. Mining activities carried out by PT. Nusa Alam Lestari was initially carried out with open pit mines and underground mines. However, since 2011 no open pit mining has been carried out due to the lack of economic coal mining (higher SR). So that currently mining is only done with underground mining. With the room and pillar mining method. PT. Nusa Alam Lestari has several seam coal reserves including the C1 seam, which ended its mining period in December 2017, because of that, it was followed by seam mining C2. As for the ventilation system used is the suction system (exhaus system) with the arrangement of blower relay. Installation of the suction blower system is followed by the installation of blowers, so that dirty air is immediately circulated out. Dirty air resulting from mining activities from one suction hole comes out through the ventilation hole and then changes with clean air entering through the other hole. The total air requirement for mining activities in C2 A seam is 686.6264 m3 / s, and in C2 B seam is 686.6264 m3 / s. . The number of blowers used to support 13 panels will be carried out development and 53 crosscut, then ventilation control is required by installing 13 auxiliary blowers on each panel with a diameter of 20 "(37 KW), and to release dirty air out, 6 main Suction blower fans will be installed 32 "(75 KW) in diameter.Modeling of the ventilation system using Ventsim visual 3 and producing a 3D ventilation system modelKeywords: Undergraound mines, Ventilation, Blower, Exhaus System, Modeling.

Analisis Kestabilan Lubang Bukaan Tambang Bawah Tanah Berdasarkan Klasifikasi Geomekanika (RMR-System) Site D.25 Lokasi III PT. Dasrat Sarana Arang Sejati, Parambahan, Desa Batu Tanjung, Kecamatan Talawi, Kota Sawahlunto Ari Ardila; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 6, No 3 (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.v6i3.116430

From the measurement of several parameters of the RMR method that has been carried out, at Site D.25 Location III for siltstone is in class III (fair rock) with an RMR value of 57 with Stand Up Time is 1200 hours or 50 days with a planned production advance hole width of 3 meters, and coal is in class III (fair rock) with an RMR value of 51 with a Stand Up Time of 600 hours or 25 days with a planned production advance pit width of 3 meters. Based on the RMR weighting data then: if using rock bolt (20 mm diameter fully grouted) with a length of 4 m and a spacing of 1.5-2 m on the walls and roof then add the installation of wire mesh, shotcrete thickness of 50-100 mm on the roof and 30 mm on the wall. If using wood reinforcement, then for the reinforcement of the opening holes, a recommendation for a support system that should be applied to optimize the support to be safe and profitable is obtained, namely with a wood diameter of 20 cm, a distance between supports of 1.5 m and FK 1.5.

Evaluasi dan Perbaikan Jalan Tambang Menggunakan Software Garmin Virb Xe di PT Riung Mitra Lestari Job Site Embalut Kalimantan Timur Argi Saputra; Sumarya Sumarya; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 4, No 3 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. PT Riung Mitra Lestari as a company engaged in mining contractors with the main products overburden and coal production is also very dependent on production achievement. Based on data from the engineering department that in June 2017 there was a production loss of 203,4 BCM. Broadly speaking productivity contributors can be divided into 3 areas: front loading, main road, and disposal area. The main road greatly affects the productivity of loading equipment and its suitability with transport equipment (DT). PT Riung Mitra Lestari in December 2017 brought a new tool called Garmin VIRB XE. Hardware that is operated via wireless networks to cellphones and computers. Some important features in this tool such as photos, videos, speed, coordinates, elevation and slope of the road. Based on road conditions, give contribute 10.293 BCM of non-attainable production. The corrective action is the allocation of 1x DZ 85 for repair the road, making new roads to adjust the grade, and stockpiling with hard material. The results obtained from the study were an increase in the speed from 22.3 Km/hour to 26.1 Km/hour, as well as pressing the breakdown spring number from 16.3 times per month before repairs to 7.1 times per month.Keywords: Productivity, Speed, Garmin Virb Xe, Mine Road, Repair Road

Co-Authors Abdullah, MT, Dr. Rijal Adree Octova Ahmad Ridho Permana Akman Syarif Al Anhar Hardianto Aldo Surya Pratama Alfi Rahman Andi Asmunandar Andre Gustian Anita Sari Sundriya Annisa Hanim D Annisa Oktavianingsih Ansosry Ansosry Aprilian Susanto Argi Saputra Ari Ardila Ari Febrianda Bafnis Ariq Jibran Azhary Rahim Bagas Maulana Hasan Berryl Hannah Carles Trisis Caniago Dasri Husien Dewi Suryani Dhoni Syaputra Diky Canima Fadhlur Rohman febri yanda praja Febrian Syukra Febylina Valencia Agustina Rumwaropen Fedi Fedi Fuzi Atiiqah Gary Aprio Gestio Sesar Yulindo Heri Prabowo Ilep Prengki Insani Sabilillah Jeremyes A.P Jualifa Pradisti Gayatri Jukepsa Andas Jukepsa Andas M Adli Fikri Muhammad Abbil Raihan Muhammad Deno Akbar Muhammad Fadillah Muhammad Irawan Multavich Multavich Mulya Gusman Murad Murad Naufal Deya Al Mafaza Mufti Nopi Kohirozi Noval Satria Novita Tria Putri Oktaviana Saputri Panji Kurnia Wiradani Rahmat Zulmy Refky Adi Nata Reno Putra Riki Rinaldo Riri Ferdian Rizaldi Rizaldi Rizka Sestiana Rizki Aldi Saputra Rizki Putri Bungo Rully Septian Sahmijar Sahmijar Sumarya Sumarya Suryadi Putra Syakinah Hasibuan Syarif Hidayattullah Teddi Triandana Tiwi Melisa Wahyu Eko Prasetianto Wahyu Kurniawan Wahyu Marta Novri Wahyudi Saputra Wuni Aprila Yolanda Noverista Yoszi Mingsi Anaperta Yudi Andrian Yunasril Yunasril Zet Rahmadanil Zhilal Darma

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