TY - JOUR
T1 - Integrated geophysical methods for determination of lithology and unstable slope, case study
T2 - 7th AUN/SEED-Net Regional Conference On Natural Disaster 2019, RCND 2019
AU - Prawira, G. A.
AU - Arphan, F.
AU - Darrian,
AU - Warnana, D. D.
AU - Sugiyono,
AU - Anggrea, T. O.
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2020/7/13
Y1 - 2020/7/13
N2 - Cipogor is an area in PSK-1 Power Plant located at West Java. This area has a damaged flushing canal due to landslides at 2018. Therefore, integration of two-dimensional resistivity (ERT), one-dimensional resistivity (VES), and Digital Elevation Model is conducted to determine lithology and unstable slope that characterized by water saturated weak zone. Resistivity models from ERT and VES method are integrated with elevation data from DEM. Lithologies from interpreted VES model are as follows: Alluvial (6 - 70.06 Ωm), Tuff sediments (12 - 28.44 Ωm), sandstone sediments (1.96 - 9 Ωm) and Breccia (42.07 - 88.6 Ωm) from Koleberes Formations. There is an anomaly (12 - 28.98 Ωm) within sandstone layer. From ERT model, there is low resistivity zone (2-5 Ωm) interpreted as weak zone and moderate resistivity zone (16-24 Ωm) around 9-17 m in depth, interpreted as sediments transported during previous landslide. From the interpretation, it can be concluded that there is weak zone in depth 5-6.91 m and 17-20 m which is a weathered sandstone of Koleberes Formation and a sediment layer that transported from previous landslide in depth 9-17 m. Heaving is occurred in this layer and preventing any large landslide to occur but cannot prevent soil creeping in the area.
AB - Cipogor is an area in PSK-1 Power Plant located at West Java. This area has a damaged flushing canal due to landslides at 2018. Therefore, integration of two-dimensional resistivity (ERT), one-dimensional resistivity (VES), and Digital Elevation Model is conducted to determine lithology and unstable slope that characterized by water saturated weak zone. Resistivity models from ERT and VES method are integrated with elevation data from DEM. Lithologies from interpreted VES model are as follows: Alluvial (6 - 70.06 Ωm), Tuff sediments (12 - 28.44 Ωm), sandstone sediments (1.96 - 9 Ωm) and Breccia (42.07 - 88.6 Ωm) from Koleberes Formations. There is an anomaly (12 - 28.98 Ωm) within sandstone layer. From ERT model, there is low resistivity zone (2-5 Ωm) interpreted as weak zone and moderate resistivity zone (16-24 Ωm) around 9-17 m in depth, interpreted as sediments transported during previous landslide. From the interpretation, it can be concluded that there is weak zone in depth 5-6.91 m and 17-20 m which is a weathered sandstone of Koleberes Formation and a sediment layer that transported from previous landslide in depth 9-17 m. Heaving is occurred in this layer and preventing any large landslide to occur but cannot prevent soil creeping in the area.
UR - http://www.scopus.com/inward/record.url?scp=85089149209&partnerID=8YFLogxK
U2 - 10.1088/1755-1315/479/1/012044
DO - 10.1088/1755-1315/479/1/012044
M3 - Conference article
AN - SCOPUS:85089149209
SN - 1755-1307
VL - 479
JO - IOP Conference Series: Earth and Environmental Science
JF - IOP Conference Series: Earth and Environmental Science
IS - 1
M1 - 012044
Y2 - 25 November 2019 through 26 November 2019
ER -