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All Journal Jurnal Geomine Jurnal GEOSAPTA Journal TEPAT: Teknologi Terapan untuk Pengabdian Masyarakat To Maega: Jurnal Pengabdian Masyarakat International Journal of Applied Sciences and Smart Technologies Abdimas Galuh: Jurnal Pengabdian Kepada Masyarakat Jurnal Himasapta Mattawang: Jurnal Pengabdian Masyarakat Jurnal Inovasi Pertambangan dan Lingkungan Journal of Mining Insight Jurnal Pengabdian Nusantara
Abdul Salam Munir
Program Studi Teknik Pertambangan, Fakultas Teknologi Industri, Universitas Muslim Indonesia, Indonesia
Religion Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Nursing Public Health Social Sciences Other

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Analysis of Blasting Geometry on Blasting Production Results at PT Semen Bosowa Maros Munir, Abdul Salam; Asmiani, Nur; Jafar, Nurliah; Wakila, Muhamad Hardin; Gouw, Jihan Fitri Ramdita Putri
International Journal of Applied Sciences and Smart Technologies Volume 05, Issue 02, December 2023
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/ijasst.v5i2.6423

Abstract

Limestone mining for cement plants uses a blasting method to break the material. Blasting production is considered successful when it can achieve production targets based on tonnage of uncovered rock, efficient use of explosives, grain size or rock fragmentation, and environmental impact. This research aims to analyze the blasting geometry on the production results at the research location by knowing the initial design, the actual blasting geometry, and the geometry recommendation using the C.J. Konya method. In addition, researchers also know the explosives used, the production results in the form of material fractionation using the Kuz-Ram method and the tonnage of uncovered rocks. The initial design with a burden of 3.4 m, spacing of 3.4 m, hole depth of 5.9 m, and ANFO explosives per hole of 33 kg produced 147.31 tonnages. The actual geometry with a burden of 1.7 m, spacing of 3.5 m, hole depth of 6.0 m and ANFO explosives per hole of 26.73 kg produced a 77.11 tonnage. The actual geometry resulted in a blasting production of 6,941 tonnes per day, which did not meet the company's production target 10,639. The fragmentation calculation results obtained an average size in the field of 15.29 cm, which meets the required screening or sieve criteria of 0.80 - 1.00 m. The size of the fragments also follows the sieve calculation using the Kuz-Ram method, with a 100 cm sieve passing only 0.01%. Based on this, the company is recommended to make geometry changes to achieve the production tonnage target that has been set.
Slope Stability Analysis of the Southern Pit in Block F Using the Morgenstern-Price and Spencer Methods at PT. Garda Tujuh Buana TBK Andi Afif Farhan; Abdul Salam Munir; Muhammad Idris Juradi
Jurnal Pengabdian Nusantara Vol. 4 No. 4 (2026)
Publisher : Konsorsium Nasional Pengelola Jurnal Pengabdian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/jpn.v4i4.274

Abstract

This study aims to analyze the stability of an open-pit coal mine slope at the Southern Pit, Block F, PT Garda Tujuh Buana Tbk, located in Bulungan Regency, North Kalimantan Province. The multi-bench mining system forms a 95 m high slope with an overall slope angle of 35°, consisting of soil, claystone, sandstone, siltstone, and coal layers. Slope stability analysis was conducted under static conditions using the Limit Equilibrium Method (LEM) through Slide2 software, applying the Morgenstern–Price and Spencer methods. The geotechnical input parameters were obtained from laboratory testing of 51 material samples. The analysis results showed deterministic Factors of Safety (FoS) of 1.239 using the Morgenstern–Price method and 1.241 using the Spencer method, with a very small difference of 0.002. Probabilistic analysis resulted in a Probability of Failure (PF) of 0.000% and a Reliability Index (RI) greater than 4.8 for both methods, indicating that the risk of slope failure under current static conditions is very low. The identified critical slip surface extends from the crest to the toe of the slope, indicating an overall slope failure mechanism. Based on the Decree of the Minister of Energy and Mineral Resources Number 1827 K/30/MEM/2018, the minimum FoS criterion for an overall slope is 1.30. Although the slope is currently considered stable because the FoS is greater than 1.0, the FoS values below the required safety criterion place the slope in the critical or marginally stable category. Slope management strategies are therefore recommended, including periodic FoS evaluation, regular geotechnical monitoring, groundwater level monitoring, and adjustment of slope geometry according to the design to prevent potential slope failures in the future.
Co-Authors Agus Ardianto Budiman Alam Budiman Thamsi Alfian Nawir Alfian Nawir Andi Afif Farhan Andi Fahdli Heriansyah Annisa Annisa Anshariah Anshariah Anshariah, Anshariah Antonina Pri Martireni Arif Nurwaskito Arif Nurwaskito Arifin, Mubdiana Asri Mulya Setiawan Bakri, Hasbi Bakri, Suriyanto Besse Putrilia Citra Aulia Khalik Citra Aulian Chalik Dewy Kumala Tehuayo Djamaluddin Djamaluddin Firdaus F Firman Firman Firman Nullah Yusuf Gouw, Jihan Fitri Ramdita Putri Habibie Anwar Habiebie Anwar Haeruddin Haeruddin Harwan Harwan Haslan Haslan Idris Juradi, Muhammad Jamal Rauf Husain Kadar, Muhammad Ilham Miftah Farid Mohammad Azhar Shauqy Muh. Ajwad Muhammad Bisyri Muhammad Rafi’i Zulkarnaen Nur Asmiani Nurhawaisyah, Sitti Ratmi Nurliah Jafar Nurliah Jafar, Nurliah oktaviani oktaviani oktaviani Rahayu Achmad Rahmat Agam Putra Rina Rembah Sahrul Sahrul Sakti Aji Adi Sanra Sitti Riatmi Nurhawaisyah Sri Wahyuni Wakila, Muhammad Hardin Yevi Ikram Karim Zalsabila, Zalwa