LAND SUBSIDENCE ANALYSIS BASED ON 2D RESISTIVITY MODELLING OF DC RESISTIVITY METHOD IN CURUGPANJANG VILLAGE, BANTEN
Land Subsidence is a phenomenon of subsidence of the land surface compared to the reference point. This phenomenon can be caused by natural factors, groundwater extraction, and building factors. Geoelectrical method was used to analyze the subsurface conditions in Curugpanjang Village consisting...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/75623 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Land Subsidence is a phenomenon of subsidence of the land surface compared to the reference
point. This phenomenon can be caused by natural factors, groundwater extraction, and building
factors. Geoelectrical method was used to analyze the subsurface conditions in Curugpanjang
Village consisting of four lines. In this study, the potential value (????) and current strength (????) will
be obtained which will be used to calculate the resistivity value. Data processing from the
measurement results is carried out using the Res2Dinv software. The subsurface cross-sectional
image of the resistivity value obtained shows the dominance of rocks that have low resistivity. The
layers suspected of acting as subsidence planes are clay and pumice (1-200 ?m) which are found
throughout the track with a layer depth range (0-9 m). The results of the sample test showed that
the soil was in a porous state with a high water content. Analysis of soil stability (safety factor)
shows that the CK-3 track is in critical condition and the CK-1 track is in stable condition |
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