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All Journal IJOG : Indonesian Journal on Geoscience Indonesian Journal on Geoscience Indonesian Journal on Geoscience MINERAL Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII
Supandi
Department Of Mining Engineering, Faculty Of Mineral Technology, Institut Teknologi Nasional Yogyakarta (ITNY)
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Determination of Deep Well Using Resistivity Method in South Amanuban, Timor Tengah Selatan Regency, Indonesia Supandi, Supandi
Indonesian Journal on Geoscience Vol 8, No 2 (2021)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2560.237 KB) | DOI: 10.17014/ijog.8.2.255-264

Abstract

DOI:10.17014/ijog.8.2.255-264South Amanuban often experiences drought during dry seasons, because the area is composed of Quaternary deposits with plain topography. Therefore, this research aims to identify and to evaluate the Quaternary deposit of groundwater potential, and to determine the deep well points in South Amanuban. The study utilized the geo-electrical method with the resistivity value approach to find high resistivity soils as aquifer layers. In addition, the deep well points are determined based on consideration of the aquifer positions from the resistivity analysis. The results show that aquifer positions are found in the limited zone of 50-150 m depth with lense shapes that are not related to each other.
Determination of Deep Well Using Resistivity Method in South Amanuban, Timor Tengah Selatan Regency, Indonesia Supandi, Supandi
Indonesian Journal on Geoscience Vol 8, No 2 (2021)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.8.2.255-264

Abstract

DOI:10.17014/ijog.8.2.255-264South Amanuban often experiences drought during dry seasons, because the area is composed of Quaternary deposits with plain topography. Therefore, this research aims to identify and to evaluate the Quaternary deposit of groundwater potential, and to determine the deep well points in South Amanuban. The study utilized the geo-electrical method with the resistivity value approach to find high resistivity soils as aquifer layers. In addition, the deep well points are determined based on consideration of the aquifer positions from the resistivity analysis. The results show that aquifer positions are found in the limited zone of 50-150 m depth with lense shapes that are not related to each other.
Determination of Deep Well Using Resistivity Method in South Amanuban, Timor Tengah Selatan Regency, Indonesia Supandi Supandi
Indonesian Journal on Geoscience Vol 8, No 2 (2021)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.8.2.255-264

Abstract

DOI:10.17014/ijog.8.2.255-264South Amanuban often experiences drought during dry seasons, because the area is composed of Quaternary deposits with plain topography. Therefore, this research aims to identify and to evaluate the Quaternary deposit of groundwater potential, and to determine the deep well points in South Amanuban. The study utilized the geo-electrical method with the resistivity value approach to find high resistivity soils as aquifer layers. In addition, the deep well points are determined based on consideration of the aquifer positions from the resistivity analysis. The results show that aquifer positions are found in the limited zone of 50-150 m depth with lense shapes that are not related to each other.
Analisis Pengaruh Getaran Peledakan Terhadap Kestabilan Lereng Lowwall Pada Pit 1 Tambang Batubara PT Atha Marth Naha Kramo (AMNK) Jobsite Langap, Kabupaten Malinau Propinsi Kalimantan Utara Muhamad Supardi; Supandi Supandi; R. Andy Erwin Wijaya
MINERAL Vol 6 No 2 (2021): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1011.402 KB) | DOI: 10.33019/mineral.v6i2.3090

Abstract

PT. Atha Marth Naha Kramo is a coal mining company located in Langap Village, South Malinau District, Malinau Regency, North Kalimantan, the purpose of this study was to determine the effect of blasting vibrations on lowwall slopes, to determine the probability of avalanches affected by blasting vibrations. In the study the analysis method used the Monte Carlo probability method and the method used to calculate vibrations with the regression approach and the actual condition of the slope was divided into three sections. Obtained regression equation for predicted value at slope point PPA = 4.0512 (SD)-1.238, for amax value (horizontal acceleration) at the slope point using equation amax = 0.6339 (PPA) - 0.0031, this equation is close to the recommendation of Marcusson with amax of 1/3 and 1/2 of the value (PPA). From the results of the analysis of the effect of vibration on the stability of the slope in section A-A safe conditions, section B-B unsafe conditions, section C-C unsafe conditions. So, in the study recommended a safe slope geometry. For all sections with an overall height between 32 - 51meter and overall slope 33°-39°, height 10meter and width of 5 meters, and vibration safe limit in section A-A is 0.275 g, section B-B 0.152g, section C-C 0.188g.
ANALISIS KESTABILAN LERENG UNTUK OPTIMASI ENDAPAN BA-TUBARA DI AREA LOWWALL PIT XYZ PT. KIDECO JAYA AGUNG KECAMATAN BATU SOPANG KABUPATEN PASER PROVINSI KALIMANTAN TIMUR Trynovianti Putri Malik; Supandi; Novandri Kusuma Wardana
Retii 2021: Prosiding Seminar Nasional ReTII ke-16
Publisher : Institut Teknologi Nasional Yogyakarta

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

Abstract

Abstract Pit XYZ is one of the Pits at Pt. Kideco Jaya Agung, where there is a lowwall area that has experienced landslides and as the area still has coal deposits, coal sediment optimization will be carried out. In the optimization of coal deposits, it is necessary to do a back analysis to determine the value of geotechnical parameters (cohesion and inner friction angle) so that the value of the safety factor on the actual slope is known and it can provide recommendations for safe and stable geometric designs. This research is conducted using quantitative methods. In the data processing, a back analysis is performed on each section. The analysis of safety factors and recommendations for slope geometry is carried out using the Morgenstern-Price method. The results show the actual slope stability value for section A with FK = 1,090 and section B with FK = 1,082. After obtaining the FK and PK values on the actual slopes, an optimization design was made for each section with FK = 1,025 and FK = 1,032 for section A and B respectively. This optimization design does not meet the criteria so the researcher makes geometric design options for each section, section A has a value of FK = 1.399% and section B has a value of FK = 1.301. Key words: safety factor, optimum geometric design
Co-Authors Muhamad Supardi Novandri Kusuma Wardana R. Andy Erwin Wijaya Trynovianti Putri Malik