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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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Evaluasi dan Analisis Kualitas dan Kualitas Udara pada Terowongan Lubang Japang di Kota Bukittinggi Teddi Triandana; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 3, No 4 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. Lubang Japang is an ancient tunnel that build during Japanesse’s colonizing in Indonesia. However it refuctioned after Indonesian Independency and officially became tourist area at 1984. Known as a tourist destination in Bukittinggi, Lubang Japang tunnel has excalation amount of visitors yearly. Tunnel has the limitation amount and quality of circulated air in it. There are range borders such as determinations of Kepmen 555.K/26/M.P.E/1995 that organizing air quality and quantity in the tunnel for circulationing process. Then the analysis between air quality and quantity in tunnel and range borders to satisfy the requirment of fresh air for visitor is needed. Base on range borders of Kepmen 555.K/26/M.P.E/1995 in point 2 to point 11 at certain time and weather terms have percentage of humidities below the mark along with point 9 that has the lowest effective temperature in 16,85%. Meanwhile the gas contents (O2 dan CO2) of all locations in Lubang Japang tunnel are safe and up to standard. So by the comparison between current air circulation’s debit and respiration requirment per-second based on Kepmen 555.K/26/M.P.E/1995 known that the maximum of visitors are 398 persons periodically, yet amount of visitors are down to 196 persons while puoring rain. Then the result of air usage evaluation for visitor at the moment is fulfilled.Keywords: air quantity, temperature, air circulation, tunnel, range border

Kajian Teknis Geometri Jalan Angkut Batubara Menuju Pelabuhan Khusus Milik PT Baturona Adimulya Untuk Mencapai Target Produksi Febrian Syukra; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 5, No 3 (2020): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstract. Coal transportation is important in achieving coal production targets. The condition of road geometry is one of the factors that influence transportation activities. The purpose of this research is to conduct a technical study of the geometry of the coal haul road from the Sumatra Jambi-Palembang crossroads to the special port owned by PT Baturona Adimulya to achieve the coal production target. The study was conducted by direct observation to the field to obtain primary data and secondary data needed. The results of the data analysis show that the geometry of the mining road still needs to be improved in certain segments. The actual condition of the width of the B-C (bend) and E-F (straight) segments of 10.6 m and 8.5 meters wide is not yet ideal, so it is necessary to increase the width of the road respectively in the width of 0.7 meters and 0.5 meters. The actual slope of the road in all segments is ideal. The actual superelevation of the F-G segment valued at 0.29 m is not ideal yet, so the elevation outside the bend needs to be added at 0.15 meters. The actual cross slope, segments A-B and E-F, respectively 10 cm and 15 cm, are not yet ideal, so it is necessary to add height to the middle of each segment as high as 8 cm and 3 cm. Production of conveyance before repairing was 56.2948.98 tons and after repairing the road geometry was 60.144.92 tons.Keywords: Transportation Geometry, Improvement Plan, Production Target, Cycle Time, Technical Study

Analisis Kestabilan Lereng Pada Penambangan Batu Gamping Dengan Menggunakan Metode Elemen Hingga Pada Blok Puncak II CV. Tekad Jaya Jualifa Pradisti Gayatri; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 6, No 5 (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.v6i5.114938

CV.Tekad Jaya is one of the Business Entities in the context of Domestic Investment (PMDN) which is engaged in mining, especially limestone mining, the stages of mining licensing owned by CV. Tekad Jaya is a Production Operation Mining Business Permit (IUP) for limestone excavation on a 6.5 hectare land area located in Jorong Bulakan, Nagari Tanjung Gadang, Lareh Sago Halaban District, Lima Puluh Kota Regency, West Sumatra Province. In the Puncak Block II area in CV. Tekad Jaya, researchers found a single slope with a height of 67 meters and a slope of 790, and there are many joints that become weak areas (discontinuous). The slope conditions have the potential to cause landslides that are dangerous for workers and hamper production activities. The purpose of this study is to recommend a good slope geometry design with safety factor (SF) and minimize the occurrence of landslides on the slopes of Puncak Block II CV. Jaya's determination. The results of testing the physical properties and mechanical properties of the rock obtained the original bulk density value of 25.115 kN/m3, saturated bulk density 25.615 kN/m3, dry density 24.546 kN/m3, cohesion value of 0.5406 MPa, and internal shear angle of 48.010. Analysis and recommendations using the finite element method. The results of the study, namely, the potential for landslides that may occur in the area of Puncak Block II CV. Tekad Jaya is in the form of a wedge failure with 21.86% probability of landslide occurring with landslide direction of N 2800 E/790. Through the analysis carried out using Phase II software, the results obtained are recommendations for overall slope geometry with a double bench model, a height of 67 m, bench widht of 6 m and overall slope of 760 with a value of safety factor (SF) in a natural state according to the finite element method, namely 1.37, while in a saturated state it is 1.34 and in a dry state it is 1.4. Based on the results of the analysis, the slopes are in a safer and more stable condition.

ANALISIS KESTABILAN LERENG UNTUK SISTEM PENAMBANGAN OVERBURDEN (SOIL) DI AREA IUP 412 HA BUKIT TAJARANG INDARUNG PT. SEMEN PADANG SUMATERA BARAT Oktaviana Saputri; Bambang Heriyadi; Yoszi Mingsi Anaperta
Journals Mining Engineering : Bina Tambang Vol 3, No 1 (2018): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Sehubungan dengan sistem penambangan pada lereng overburden (soil) diarea 412 Bukit Tajarang, maka perlu dilakukan kajian geoteknik untuk menilai apakah penambangan masih memungkinkan untuk dilanjutkan pada saat kondisi normal dan mengetahui seberapa besar batasan FK minimum lereng pada kondisi jenuh yang harus ditinggalkan oleh perusahaan, dan kembali produksi setelah lereng runtuh akibat stabilitas lereng saat hujan, yang mana akan digali oleh alat berat excavator. Sebagai upaya mendapatkan nilai faktor keamanan yang aman yaitu (FK>1.3) pada kondisi kering, dilakukan kajian analisis kestabilan pada dinding lereng daerah soil dengan kondisi lereng dalam keadaan stabil setelah dilakukan proses penambangan lanjutan. Kestabilan lereng pada pembahasan ini dianalisis menggunakan metode kesetimbangan batas BishopSimplied. Analisis kestabilan dilakukan untuk mengetahui seberapa besar potensi longsoran kedepan yang akan terjadi jika masih tetap dilakukan aktifitas penambangan pada area 412 Ha. Parameter properties material akan digunakan sebagai data masukan untuk pengoptimalan kestabilan lereng yang berpotensi terjadinya longsor. Sebagai hasil pembahasan, dapat disimpulkan beberapa hal berikut. Pertama, material pada lokasi penelitian tergolong sebagai material lunak, lemah, atau rapuh, sehingga bentuk longsoran yang terjadi adalah longsoran busur. Material juga dapat digali tanpa menggunakan peledakan. Kedua, parameter properties material yang berpotensi longsor yaitu soil: Berat isi tanah pada koordinat A, B, dan C adalah ()= 1.33gram/cm2, 2.02gram/cm3, dan 2.04gram/cm3. Berat isi kering adalah (d)= 1.104gram/cm3, 1.418gram/cm2 dan 1.552gram/cm2. Kohesi adalah (c)= 53.497 KN/m2, 50.300 KN/m2, 69.296 KN/m2. Dan Sudut geser dalam adalah (ϕ)= 25.01˚, 20.97˚ dan 17.57˚. Analisis lereng tunggal secara keseluruhan pada koordinat A dengan ketinggian 14 meter dan sudut 43˚, B dengan ketinggian 21 dan sudut 78˚, C dengan ketinggian 28˚ dan sudut 78˚. Hasil dari analisis nilai actual lerengyang dilakukan didapatkan nilai faktor keamanan pada koordinat A, B dan C dengan nilai FK dalam kondisi jenuh, setengah jenuh , dan kering adalah 1.732, Setengah jenuh 2.378 dan kering 2.711. Koordinat B dengan nilai FK dalam kondisi jenuh 0.949, setengah jenuh 1.081 dan kering 1.062. Pada koordinat C dengan nilai FK dalam kondisi jenuh 1.064, setengah jenuh 1.158 dan kering 1.164.

Kajian Pengurangan Getaran Tanah (Ground vibration) Pada Peledakan Overburden Tambang Batubara Di PT. Artamulia TataPratama Site Tanjung Belit Provinsi Jambi Ahmad Ridho Permana; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 4, No 1 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Abstrak. PT. Artamulia Tatapratama generally consists of two main materials namely claystone and sandstone with the value of the test results of the UCS test averaging above 20 MPa, which belongs to the hard rock category. Therefore, blasting activities were carried out in an effort to provide more effective and efficient overburden constituent materials. Blasting activities carried out in addition to paying attention to the production target must also be taken into account the impact of the blasting it self, especially in terms of ground vibration which can cause negative effects on the surrounding area, if it exceeds the established standards. Recording data of ground vibration measurements on the Vibracord DX series devices carried out by PT. Artamulia Tatapratama showed that the maximum value of soil vibration level produced reached 2.98 mm / second, while the threshold threshold value agreed upon by the local government together with the surrounding community, and PT. Artamulia Tatapratama which is equal to 1.4 mm / second. Whereas according to the Indonesian National Standard (SNI) the maximum value of vibration blasting is 3 mm / sec (based on the condition of the building around the blasting area) Keywords: Seismic wive, Blasting, Peak Particle Velocity, scale distance, ground vibration

ANALISIS PENGARUH PERUBAHAN NILAI HARGA ACUAN BATUBARA TERHADAP KELAYAKAN PENAMBANGAN TAMBANG BAWAH TANAH OMBILIN 1 (SAWAHLUWUNG) PT. BUKIT ASAM – UPO Yolanda Noverista; Murad Murad; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 2, No 1 (2015): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

PT. Bukit Asam - UPO is an underground coal mining company conducted in the area Ombilin I (Sawahluwung), Ombilin II (Waringin-Sugar) and Ombilin III (Sigalut). Excess coal production compared to the low demand becomes a significant factor for the price of coal fell for the last few years. So far, the Government has issued a monthly coal reference price (HBA and HPB) since January 2009 for use by manufacturers of coal to all the places and contact services. But the official implementation HBA started since September 2011. In addition, the reference price of coal to be used by holders of Production Operation IUP, IUP specialized production operations as well as CCoWs as a reference in determining the selling price of coal for a given period. Therefore, it needs to be calculated budget plans annual production of coal mining PT. Bukit Asam UPO so that it can be seen in corporate profits and the value of the minimum reference price of coal mining in order to still meet the minimum profit required.The method used in this research is quantitative research methods. Where do the initial learning of what will be done and the collection of data necessary for the manufacture of paper so that when the data processing that starts from the calculation of the budget plan, coal reference price comparison with the price of the exchange and analysis of the effects of changes in the reference price of coal. Can be concluded from these data.From research conducted then obtained Budget Plan (RAB) for one year PT. Bukit Asam UPO is Rp. 44.638.890.400.00. Minimum benchmark coal prices obtained in December 2014 at 64,65, it shows the value of the company's profit decreases with the increase in the exchange rate increasingly rises. Minimal HBA preferably above 45.65 with the exchange rate of Rp. 12.000 / $, because if theHBA under 45,65 would suffer losses.

Analisis Kestabilan Lereng Untuk Perencanaan Optimalisasi Penambangan Pada Lokasi Tambang Air Laya (TAL) Barat PT. Bukit Asam Tbk Aprilian Susanto; 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.v5i4.109508

Abstract PT. Bukit Asam Tbk is one of the largest coal mining companies in Indonesia which has several mining locations, one of which is the Air Laya Barat Mine. Currently, the depth of the Air Laya Barat Mine is -57 m in section A-A '. In order for coal production to increase in the next quarter, the TAL Barat pit mining plan will optimize to a depth of -80 m because there is still coal that allows it to be mined. In the optimization plan, important things that need to be analyzed, one of which is the slope safety factor, the method used in this research is the bishop method. As a result of the research the conclusions are as follows. First, the weight of OB (γ) = 20.07kN / m3, cohesion (c ') = 25.20 kPa and the inner angle of shear ((') = 41,63°. Weight of Lower C (γ) = 23.52 kN / m3, cohesion (c ') = 22.55 kN / m2 and inner shear angle (ϕ') = 40,59 °. Second, for modeling using the Geostudio Slope / W 2012 program with FK Overall Slope is 2,788. So that the stability of the slope against the optimization plan from a depth of -57 m to a depth of -80 m is still safe to continue

ANALISIS KESTABILAN LERENG BLOK BUKIT RAHMAT PT. CAHAYA BUMI PERDANA, KOTA SAWAHLUNTO Muhammad Fadillah; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 6, No 2 (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.v6i2.111779

Abstract. PT. Cahaya Bumi Perdana is a company engaged in coal mining, located in Sawahlunto City, West Sumatra Province with an area of 103.10 Ha. There is a slope with a height of 23.2 meters, a slope of 78ο and this slope is 7 meters behind the BT 04 tunnel door. With these slope conditions, it has the potential to endanger workers and hinder production.The results of testing the physical and mechanical properties of the soil obtained the original bulk density value of 18.88 kN/m3 , cohesion (c) 8.6054 kN/m2 and inner shear angle (ϕ) 43,54ο . The results of the physical and mechanical properties of the sandstone are the original bulk density of 22.85 kN/m3 , the cohesion (c) of 184.3 kN/m2 and the inner shear angle (ϕ) 53,4894ο . The analysis and recommendations used the simplified bishop and simplified janbu methods. The results of the study are landslides in the form of landslides with a 40% possibility of landslides in the direction of landslides N 283ο E/78ο . Therefore, a single slope recommendation is carried out, so the slope is 71° and the safety factor (FK) is 1.333 and the slope is in a safe condition. Keywords: Physical and Mechanical Properties of Soil and Rocks, Slope Geometry, Simplified Bishop, Simplified Janbu, Safety Factors

ANALISIS PENURUNAN SUHU UDARA DI AREA PRODUKSI TAMBANG BATUBARA BAWAH TANAH PT. BUKIT ASAM (PERSERO) TBK, UNIT PENAMBANGAN OMBILIN, SAWAHLUNTO, SUMATERA BARAT Fedi Fedi; 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

PT. Bukit Asam – UPO is one of coal underground mining which conduct mine activity in Ombilin I (Sawahluwung), Ombilin II (Waringin-Sugar) and Ombilin III ( Sigalut). At underground mining, ventilation system is really important for human’s breathing need (worker), to netralize toxic gases, reduce ash concentration and control temperature . Ventilation system in Sawah Luwung underground mining used suction system with 32,76 m3/second air out quantity, while for air in is 32,33 m3/s through three in pit such as Adit Sawahluwung amount of 23,32 m3/s, Lurah Sapan I 6,81 m3/s and 2,28 m3/s in Lurah Sapan II. The difference of quantity of air in with air out is 0,43 m3/s which possible caused by adding air in in Mine Vein. The actual air temperature at work/production J14C front area is 26oC and 27oC for front J15C. Air Temperature decreasing is been done with two method such as putting ice in and out of thermos bottle. For thermos bottle trial it is conducted the number of air temperature decreasing in Front J15C is about 2,5oC – 3oC, while for front J14C is conducted 2oC – 2,5oC. Meanwhile without thermos bottle trial (putting ice in open section), temperature decreasing is 3oC – 3,5oC, and also 3oC in front J14. The result of air temperature decreasing between front J15C and J14C are different, which caused by the difference of duct length and the duct length in J15C is 15 meters and for J14C is 71 meters length. Based on this research, the tenacity of ice is 3 – 3,5 hours.

Analisis Kebutuhan Udara Dan Sistem Ventilasi Pada Tambang Batubara Bawah Tanah Lubang CBP 02 PT. Cahaya Bumi Perdana, Kota Sawahlunto, Sumatera Barat. Annisa Oktavianingsih; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 6, No 2 (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.v6i2.111712

Abstract. PT. Cahaya Bumi Perdana is an underground coal mining company located in the village district of Parambahan, Sawahlunto, West Sumatera province. Underground mine hole in CBP 02 PT. Cahaya Bumi Perdana uses one main blower with a blow system. Hole CBP 02 is a new opening with a lenght of 80 meters. In hole CBP 02 there is one active working unit and two control tanks and one mining branch that is not yet active. From the research results, it was found that the air quality and mining gas were in quite good condition, but the temperature value had passed the established threshold, namely <85 %. This study analyzed the quality of air and gas in underground mines based on KEPMEN 1827 K/30/MEM/2018.Ventilation planning for the future is to use a suction ventilation system that is placed in the ventilation holes located between the inlets C2A and C2B with a relay blower arrangement. Installation of a suction blower followed by the installation of a blower so that the dirty air is circulated out immediately. Dirty air resulting from mining activities from one hole is sucked out throught the ventilation holes and replaced with clean air that enters throught holes C2A and C2B where the blower has been installed. Because of the CBP hole 01 is located above the CBP 02 hole, the amount of methane gas emissions will increase. From the calculation results, the air requirement in hole C2A is 27,425 m3 /s, in hole C2B is 22,735 m3 /s, and the air requirement to dilute methane gas from hole CBP 01 is 69,92 m3 /s. Then the total amount of air needed is 120,08 m3 /s. The number of blowers needed in hole C2A is 15 auxillary blowers with a capacity of 2,7 m3 /s and using 12 auxiliary blowers in hole C2B with a capacityof 2,7 m3 /s, and to remove dirty air using 6 suction fan blower. This ventilation modelling uses ventsim visual 5.Keywords : Temperature, Humadity, Blower, Ventsim Visual 5

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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