Claim Missing Document
Check
Articles

Pengaruh Penggunaan Blower & Es Batu Pada Alat Simulasi Ventilasi Tambang Bawah Tanah Dalam Upaya Penurunan Suhu Untuk Skala Laboratorium Wuni Aprila; Bambang Heriyadi; Heri Prabowo; Jukepsa Andas
Journals Mining Engineering : Bina Tambang Vol 8, No 3 (2023): 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.v8i3.126020

Abstract

Increased temperatures in Underground Mines can cause uncomfortable working conditions and negatively impact workers' health. If there is a temperature or increase in temperature that exceeds the standards determined by the Decree of the Director General of Minerals and Coal, Ministry of Mineral Resources and Mineral Resources No. 185.K/30DJB/2019, it is important to identify efforts to reduce the temperature in the work environment. This research wants to reveal the effect of using ice cubes to reduce the temperature which is simulated in an underground mine ventilation simulation tool in the laboratory, then the results obtained will be implemented in field conditions and the results will be correlated with needs in the field. The data taken to obtain results using a simulation tool in the laboratory was done using 2 experiments, where experiment 1 used 2 kg of ice cubes, at dry temperatures it could not reduce 1°C while at wet temperatures it could reduce ±1°C. Then in experiment 2 using 5kg ice cubes, the results showed that the dry temperature could decrease by ± 1°C and the wet temperature could decrease by ± 2°C. For humidity when using ice cubes there is not much change, only around ±5% but still remains within the threshold value.The correlation results when placed in the field from simulation tools in the laboratory are that in experiment 1 it requires 25 kg of ice cubes to reduce 1°C in wet temperature only, and in experiment 2 it requires 61 kg of ice cubes to reduce 1°C in dry temperature and 2°C at wet temperatures.To obtain correlation results, they are placed in field conditions in accordance with established standards, for Tunnel A location requires 183 kg of ice cubes, Tunnel B 244 kg of ice cubes, Tunnel A to Tunnel B as much as 183 kg of ice cubes, Branch 1 Tunnel 2 had 244 kg of ice cubes and Branch 2 Tunnel B had 305 ice cubes.
Evaluasi Kestabilan Lubang Bukaan dan Sistem Penyanggaan dengan RMR-System pada Terowongan D-07 Tambang Batubara PT Dasrat Sarana Arang Sejati, Kota Sawahlunto, Provinsi Sumatera Barat Ariq Jibran; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 9, No 2 (2024): 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.v9i2.128691

Abstract

PT. Dasrat Sarana Arang Sejati merupakan salah satu perusahaan yang bergerak di bidang pertambangan batubara, dengan menggunakan metode penambangan tambang bawah tanah yang mana lebih berisiko terjadinya kecelakaan daripada metode tambang terbuka. Pada observasi ditemukan adanya kekar pada dinding terowongan yang berpotensi terjadinya runtuhan. Penelitian ini dilakukan untuk mengetahui kekuatan batuan, kelas massa batuan, potensi keruntuhan baji, kestabilan lubang bukaan, dan rekomendasi sistem penyangga yang tepat berdasarkan hubungan kelas massa batuan dan jarak penyangga yaitu metode klasifikasi Rock Mass Rating (RMR-System).Dari hasil analisis yang dilakukan diketahui bahwa rata rata kelas massa batuan pada siltstone adalah batuan kelas II (Good Rock) dengan nilai RMR 70 dengan Stand Up Time 32000 jam (±6 bulan) jarak Span 4 m, pada batubara kelas massa batuannya termasuk ke dalam kelas III (Fair Rock) dengan nilai RMR 47 dengan Stand Up Time 212,5 jam (±9 hari) jarak Span 3 m. Berdasarkan hasil analisis pada nilai RMR 47 nilai FK < 1,5 dengan menggunakan jarak penyangga rata-rata 1,71 m, maka perlu dilakukan evaluasi jarak antar penyangga untuk mendapatkan nilai FK stabil (≥1,5). Dari hasil perhitungan untuk mencapai nilai FK stabil digunakan jarak penyangga rekomendasi ± 1,437 m pada RMR 47.
ANALISIS KESTABILAN LUBANG BUKAAN DENGAN METODE RMR-SYSTEM PADA LUBANG PENDIDIKAN JALUR J.3F – J.37 UNDERGROUND MINE PT. BUKIT ASAM OMBILIN SAWAHLUNTO Wahyudi Saputra; Bambang Heriyadi
Journals Mining Engineering : Bina Tambang Vol 8, No 3 (2023): 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.v8i3.125993

Abstract

The strength and shape of rock masses can be affected by tunnel excavation, so rocks will seek a new equilibrium as a result of such treatment. The displacement of tunnel walls and roofs, the occurrence of collapses in tunnels are signs of the rock's tendency to seek a free field where it can deform and allow a new equilibrium to be established.Using a method based on Bieniawski 1989, the RMR-System was used to weight the different rock mass classes. In this analysis, rock grades are weighted based on the compressive strength characteristics of the rock, Rock Quality Designation, discontinuity distance, groundwater conditions, and orientation of the bristles towards the tunnel. Rock mass class values, rock strength, collapse potential, holding time values, and buffer recommendations based on rock mass class values are the outputs of this analysis.Based on the measurements made for various parameters of the RMR method, the claystone at the J.3F - J.37 opening is in class III (fair rock) with an RMR value of 59, and the coal is in class III (fair rock) with an RMR value of 53. The stress values received at the cap and side post are 604.01 kg/cm2 and 150.67 kg/cm2, respectively, with a wood bending strength value of 800 kg/cm2 and a wood compressive strength of 470 kg/cm2.The recommended design of the three piece set wooden support is the length of the cap of 2.9 m, the bottom width of 3.4 m, the height of 2.4 m, the distance between the supports of 0.7 m, the diameter of the support of 18 cm with the FK value on the cap of 1.51. Meanwhile, the distance between supports of 1.2 m uses wood with a diameter of 22 cm with an FK value on the stamp of 1.61.
Creativity and Self-Discipline as Predictors of Academic Success in Geospatial Engineering Education Widia Ramadona; Bambang Heriyadi; Lasyatta Syaifullah
Jurnal Penelitian Pendidikan IPA Vol 10 No 12 (2024): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i12.9646

Abstract

The Rapid development of geospatial technology and increasing industry demands for competent workforce necessitate a deeper understanding of factors influencing student academic success in geospatial engineering education.  This research aims to examine the contribution of creativity and self-discipline to student learning outcomes in the Fundamentals of Geospatial Engineering course. Specifically, it analyzes: (1) the contribution of creativity to learning outcomes, (2) the contribution of self-discipline to learning outcomes, and (3) the simultaneous contribution of both factors to the learning outcomes of tenth-grade students in the Geomatics Engineering Program at SMK Negeri 1 Sarolangun. The results show that learning creativity and self-discipline have a significant joint influence on student learning outcomes. Specifically, learning creativity has a positive and significant effect, where every one-unit increase in creativity will increase learning outcomes by 0.311 units. Likewise, self-discipline also has a positive and significant effect, where every one-unit increase in discipline will increase learning outcomes by 0.184 units. Simultaneously, learning creativity and self-discipline contribute 73.5% to student learning outcomes. These findings emphasize the importance of considering psychological and socio-emotional aspects, such as creativity and self-discipline, in an effort to improve the quality of learning and academic success of students in geospatial engineering education. The results of this research can be utilized to develop more effective and comprehensive learning strategies in the context of vocational education, particularly in the field of geospatial engineering.
Human factor training as a learning intervention for Technical Personnel performance Rahmat Rahmat; Bambang Heriyadi; M. Giatman; Syahril Syahril
Journal of Educational and Learning Studies Vol 9, No 1 (2026): Journal of Educational and Learning Studies
Publisher : Global Econedu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32698/02402

Abstract

This study aimed to analyze the partial and simultaneous effects of Human Factor Training, Engineer Competence, and Work Motivation on Aircraft Engineer Performance in the Line Maintenance Unit of Garuda Maintenance Facility AeroAsia. A quantitative descriptive-correlational design was employed. The population consisted of 103 aircraft engineers across three maintenance stations (KNO, CGK, and SUB). Following instrument validation with 30 engineers, 73 engineers were selected as the main sample using cluster random sampling. Data were collected through a five-point Likert-scale questionnaire and analyzed using multiple linear regression in SPSS 25. Human Factor Training significantly influenced engineer performance (t = 6.642; p < 0.001), as did Engineer Competence (t = 2.192; p = 0.032). In contrast, Work Motivation showed no significant effect (t = 1.763; p = 0.082). Simultaneously, the three variables significantly affected engineer performance (F = 288.248; p < 0.001). Human Factor Training emerged as the strongest predictor of engineer performance, followed by Engineer Competence. Although Work Motivation was positively related to performance, its contribution was not statistically significant, suggesting that performance in aircraft maintenance is more strongly influenced by technical competence, safety training, and compliance with aviation regulations and standard operating procedures.
Models and outcomes of work-based learning and industry collaboration for vocational teacher professional development: a systematic literature review Satria Yudhistira; Nurhasan Syah; Bambang Heriyadi; Risfendra; Muhammad Akbar
Journal of Counseling, Education and Society Vol. 7 No. 1 (2026): Journal of Counseling, Education and Society
Publisher : Indonesian Institute for Counseling, Education and Theraphy

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29210/08jces689200

Abstract

Vocational teachers are expected to continuously develop pedagogical and industry-relevant competencies to address rapid technological and workforce changes. However, evidence regarding the effectiveness of work-based learning and industry collaboration in supporting vocational teacher professional development remains fragmented across different educational contexts. This study synthesizes empirical evidence on vocational teacher professional development through a Systematic Literature Review (SLR). Following the PRISMA 2020 guidelines, relevant studies were retrieved from the Scopus database using predefined search strategies and screened according to predetermined inclusion and exclusion criteria. therteen empirical studies published between 2020 and 2025 were included and analyzed using thematic synthesis. The findings indicate that work-based learning, workplace immersion, teaching factory, and industry collaboration consistently strengthen teachers’ pedagogical, technical, and professional competencies while improving curriculum relevance. Nevertheless, institutional support, funding, and sustainable school–industry partnerships remain key implementation challenges. These findings provide an evidence-based foundation for developing sustainable vocational teacher professional development programs.
Implementation of the merdeka curriculum for competency achievement and graduate employability in vocational education Agus Fadly Taqwan Lubis; Asnil Asnil; Oriza Candra; Bambang Heriyadi
Journal of Educational and Learning Studies Vol 9, No 1 (2026): Journal of Educational and Learning Studies
Publisher : Global Econedu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32698/02652

Abstract

This study aimed to analyze the implementation of the Merdeka Curriculum, students' competency achievement, graduate employment outcomes, and the supporting and constraining factors at Tritech Informatics Private Vocational High School, Medan. A qualitative descriptive case study was conducted using semi-structured interviews with nine purposively selected informants, classroom observations, and document analysis, including students' academic records, Vocational Competency Test (VCT) results (2022–2025), and graduate tracer study data (2022–2024). The findings showed that competency-based learning, authentic assessment, and industry collaboration were effectively implemented. Students' average academic achievement increased from 85.28 to 89.31, while VCT scores improved from 87.97 to 93.54. Tracer study data revealed that 88.8% of graduates engaged in productive activities, with increasing employment rates and occupational relevance. The Merdeka Curriculum contributed positively to competency development and graduate employability, although continuous improvements in teacher competence, learning facilities, and industry partnerships remain essential.
Optimalisasi Produktivitas Alat Gali Muat dan Alat Angkut pada Kegiatan Pengupasan Overburden untuk Pencapaian Target Produktivitas pada Bulan Juli di Pit 2 Banko Barat Swakelola 1 PT Bukit Asam Tbk,Tanjung Enim, Sumatera Selatan Massytah Massytah; Jukepsa Andas; Bambang Heriyadi; Heri Prabowo
Journals Mining Engineering : Bina Tambang Vol 10, No 1 (2025): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan, Fakultas Teknik, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bina tambang.v10i1.134137

Abstract

Analisis Kestabilan Lereng Berdasarkan Klasifikasi Massa Batuan Serta Analisis Balik di Pit 3 IUP PT Dizamatra Powerindo Mabruka Az Zahra; Yoszi Mingsi Anaperta; Bambang Heriyadi; Harizona Aulia Rahman
Journals Mining Engineering : Bina Tambang Vol 10, No 1 (2025): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan, Fakultas Teknik, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bina tambang.v10i1.134146

Abstract

Penelitian ini bertujuan untuk menganalisis lereng lowwall dan timbunan tanggul (filled embankment) di PT Dizamatra Powerindo melalui pendekatan analisis kinematik, klasifikasi massa batuan (RMR dan GSI) menggunakan metode Kesetimbangan Batas (Limit Equilibrium Method) dengan pendekatan Morgenstern-Price. Data geoteknik dikumpulkan dari hasil pengukuran di lapangan secara manual dan menggunakan bantuan software. Hasil kinematik menunjukkan bahwa pada material claystone dengan nilai RMR = 60 terdapat potensi longsoran guling sebesar 19,44% dan pada material sandstone dengan nilai RMR = 26 tidak menunjukkan adanya potensi longsoran. Dari hasil back analysis diketahui bahwa penyebab longsoran pada area lowwall terjadi pada properties sandstone (c = 53,82 kN/m² dan ɸ = 7,12°) dan claystone (c = 50,29 kN/m² dan ɸ = 6,11°) menghasilkan FK = 0,995.
ANALISIS PENDAHULUAN PEMBELAJARAN STEAM BERBASIS ETHNOMATHEMATICS PADA BENTUK RUMAH ADAT BATU URIP LUBUKLINGGAU Hendri Wijaya; Bambang Heriyadi; Pinta Murni; Muhammad Naswir
Journal of Mathematics Science and Education. Vol 9 No 1 (2026): Penelitian dan Karya kependidikan Matematika
Publisher : Universitas PGRI Silampari

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Penelitian ini bertujuan mengidentifikasi, memetakan, dan menganalisis potensi unsur STEAM serta etnomatematika pada arsitektur Rumah Adat Batu Urip Lubuklinggau sebagai pijakan dasar merancang perangkat pembelajaran kontekstual abad ke-21. Jenis penelitian ini adalah kualitatif deskriptif dengan pendekatan etnografi sebagai bagian dari studi pendahuluan (preliminary research). Data dikumpulkan melalui observasi fisik, dokumentasi, serta wawancara mendalam bersama pemangku adat, budayawan, dan guru di MTs Mazroillah Lubuklinggau. Hasil penelitian menunjukkan arsitektur rumah panggung ini kaya konsep geometri formal (trapesium, segitiga, balok, simetri, pola bilangan) yang terintegrasi fungsional dengan sains ekologis, teknologi pasak tanpa paku, rekayasa struktur, dan seni ukir Sindang Kelingi. Penelitian ini juga berhasil merumuskan rancangan 6 sintaks pembelajaran kontekstual (eksplorasi, diskusi, aplikasi, analisis, formalisasi, reflektif) yang divalidasi oleh praktisi pendidikan. Disimpulkan bahwa Rumah Adat Batu Urip sangat layak menjadi cetak biru (blueprint) pengembangan perangkat pembelajaran STEAM berbasis etnomatematika pada tahap riset pengembangan selanjutnya. Kata Kunci: Etnomatematika, Pembelajaran STEAM, Rumah Adat Batu Urip
Co-Authors Abdullah, MT, Dr. Rijal Adree Octova Agus Fadly Taqwan Lubis 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 Asnil Asnil Azhary Rahim Bagas Maulana Hasan Berryl Hannah Candra, Oriza 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 Harizona Aulia Rahman Hendri Wijaya Heri Prabowo Ilep Prengki Insani Sabilillah Jeremyes A.P Jualifa Pradisti Gayatri Jukepsa Andas Jukepsa Andas Lasyatta Syaifullah M Adli Fikri Mabruka Az Zahra Massytah Massytah Muhammad Abbil Raihan Muhammad Akbar Muhammad Deno Akbar Muhammad Fadillah Muhammad Irawan Muhammad Naswir Multavich Multavich Mulya Gusman Murad Murad Naufal Deya Al Mafaza Mufti Nopi Kohirozi Noval Satria Novita Tria Putri Nurhasan Syah Oktaviana Saputri Panji Kurnia Wiradani Pinta Murni Rahmat Rahmat Rahmat Zulmy Refky Adi Nata Reno Putra Riki Rinaldo Riri Ferdian Risfendra Rizaldi Rizaldi Rizka Sestiana Rizki Aldi Saputra Rizki Putri Bungo Rully Septian Sahmijar Sahmijar Satria Yudhistira Sumarya Sumarya Suryadi Putra Syahril Syahril Syakinah Hasibuan Syarif Hidayattullah Teddi Triandana Tiwi Melisa Wahyu Eko Prasetianto Wahyu Kurniawan Wahyu Marta Novri Wahyudi Saputra Widia Ramadona Wuni Aprila Yolanda Noverista Yoszi Mingsi Anaperta Yudi Andrian Yunasril Yunasril Zet Rahmadanil Zhilal Darma