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All Journal Bulletin of Scientific Contribution : Geology Journal of Geosciences and Applied Geology
APRILIAN, YOGA
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Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Energy Engineering Environmental Science

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DISPOSAL LIQUEFACTION POTENTIAL ANALYSIS BASED ON WASTE DUMP STABILITY RATING HAZARD CLASSIFICATION SYSTEM (WSRHC) METHOD AT DISPOSAL TAMBANG AIR LAYA, SOUTH SUMATRA Aprilian, Yoga; Zakaria, Zufialdi; Khoirullah, Nur; Ersyari, Jodistriawan; Chen, Reynara Davin
Journal of Geological Sciences and Applied Geology Vol 5, No 3 (2021): Journal of Geological Science and Applied Geology
Publisher : Faculty of Geological Engineering, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/gsag.v5i3.38039

Abstract

South Tambang Air Laya Disposal is an inpit disposal located in an active tectonic area adjacent to the active Sumatran Fault Zone. Area's support this with a peak acceleration value of 0.2 – 0.25. One of the causes of liquefaction is the presence of shocks or earthquakes. For this reason, it is necessary to analyze the liquefaction potential to determine the liquefaction potential, especially in the disposal material and the disposal foundation of the research area. The method used in this research is the Waste Dump Stability Rating Hazard Classification System; this method is used to assess the liquefaction potential at the disposal, divided into two parts, namely the liquefaction potential at the foundation and the liquefaction potential at the disposal material. The data used in this research include secondary data from seismic factor data, South Sumatra earthquake zone data, South Sumatra liquefaction zone data, and laboratory test results of disposal foundations. In addition, data on the results of physical and mechanical properties of the disposal material were used in the form of grain size gradation data and data from plasticity test results. All the data used shows that the liquefaction potential of the disposal foundation is included in a negligible category with a rating value of 0. Meanwhile, the potential for liquefaction of disposal material is included in the low category with a rating value of -2.5, which must still be considered to avoid unexpected things that can occur.
PRELIMINARY INTERPRETATION FOR GEOTHERMAL POTENTIAL AREA USING DEM AND LANDSAT OLI 8 IN MOUNT ENDUT MAHARANI, ALYA; SALSANUR, VISKA; HILAL, ALBI; APRILIAN, YOGA
Bulletin of Scientific Contribution Vol 19, No 1 (2021): Bulletin of Scientific Contribution : GEOLOGY
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/bsc.v19i1.32489

Abstract

Regard to the increasing need for fossil energy in Indonesia, it is necessary to explore alternative energy. For example is geothermal energy, which is known as a sustainable and eco-friendly energy source. Indonesia is one of the countries with the most substantial geothermal potential reaching 23.9 GW. Therefore, this study using the remote sensing method to predict potential areas for geothermal systems in the Mount Endut, Lebak, Banten. The research using Landsat 8 OLI for analysis Normalized Difference Vegetation Index (NDVI) and Land Surface Temperature (LST), along with DEM imagery is used for Fault Fracture Density (FFD) analysis. The results of Land Surface Temperature (LST) analysis showed the highest value in the northern and middle part of the research area with a value of 33.7°C. This is related to the results of the NDVI analysis, which areas has lower values in the northern and middle areas with values about 0.36 - 0.06. The lineament mostly has a northwest-southeast direction, with the highest value of the lineament density is 2.69 km / km2, mostly located in the middle part of the research area that can be related to the weakest zone as a geothermal path to the surface. Based on the results, it shows the relationship between the LST is the opposite of the NDVI value. Thus, it can be concluded that the area which has geothermal potential is located from western to the middle of the research area, which is correlated with the presence of manifestation regarding to hot springs.
Co-Authors Chen, Reynara Davin Ersyari, Jodistriawan HILAL, ALBI Khoirullah, Nur MAHARANI, ALYA SALSANUR, VISKA Zufialdi Zakaria, Zufialdi