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All Journal Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics Journal of Engineering Science and Technology Applications
Haryono, Ahmad Fauzan
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Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Physics

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Desain Perencanaan Sequence Penambangan Batubara Short-Term: Short-Term Coal Mining Sequence Planning Design Razvi, Achmad; Razak, Supardi; Haryono, Ahmad Fauzan
Journal of Engineering Science and Technology Applications Vol. 1 No. 2 (2023): Journal of Engineering Science and Technology Applications
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jesta.v1i2.186

Abstract

Mine planning activities require analysis to apply the mining sequence to determine the reserve value of the designed mining sequence by considering the ultimate pit limit to match the targeted reserve and economic value. The designed pit limit will be divided into smaller units that consider the recommended stripping ratio value from the company. In the study, 2 PC-800 tools were selected with a month's production value of 274,176 Bcm for overburden excavation and 1 PC-200 with a month's production value of 42 Bcm. 1 PC-200 with a production value for a month of 42,389.57 tonnes for coal excavation. coal excavation, then volume calculations were carried out using the block model method. The results of overburden volume from this study in mining sequence 1, 2, 3, 4. mining sequence 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12 respectivel are (274,093; 274,129; 273,997; 273,754; 273,649; 274,138; 273,710; 274,176; 274,142; 274,176; 274,176; 274,043) Bcm. For the results of coal volume in mining sequences 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12 are (785.2; 17,420; 41,873; 41,684.5; 26,299; 34,938.8; 41,967.9; 42,389.1; 42,389.1; 42,217.5; 42,387.8; 42,389.1) tonnes respectively.
DESIGN OF SAFETY FACTORS FOR LANDSLIDE POTENTIAL AND ANDESITE MATERIAL SLOPES GEOMETRY Haryono, Ahmad Fauzan; Razak, Supardi; Kusumaningsih, Dewi Ayu
Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics AL-FIZIYA JOURNAL OF MATERIALS SCIENCE, GEOPHYSICS, INSTRUMENTATION AND THEORETICAL PHYSICS VOL.7, N
Publisher : Physics Study Programme, Faculty of Science and Technology UIN Syarif Hidayatullah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/fiziya.v7i2.42160

Abstract

This research was conducted because the material absorption capacity needs to be maximized, so it is necessary to make a mining slope geometry with an optimal safety factor value so that there is no potential for landslides in the research area. The method used is the morgenstern price method, this method was chosen because it has considered the stability of moments and forces.The actual slope geometry that has not been tested for safety needs to be changed. The physical and mechanical properties data collection is processed to produce a geometric model with a safety factor in accordance with applicable regulations. The actual slope geometry of the Cijurey block is 20m with a slope of 85o, 8m with a slope of 88o, 5m with a slope of 83o and 4m with a slope of 85o with a safety factor value of 1.01. A geometric change was made with a slope height of 6 m and a ladder width of 3m which was made multi-level with an overall angle of 80o having a safety factor of 1.302 which means that it has met the slope safety criteria.Keywords: safety factor, geometry, slope
Co-Authors Kusumaningsih, Dewi Ayu Razak, Supardi Razvi, Achmad