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Mitigation Dredging in Seabed Geotechnical Engineering Study Using Marine 2D ERI and Textural Characteristics in Thengapattanam Harbour, South India.

Authors :
Antony Ravindran, A.
Vinoth Kingston, J.
Hepzibah Premshiya, K.
Source :
Geotechnical & Geological Engineering; Feb2021, Vol. 39 Issue 2, p897-907, 11p
Publication Year :
2021

Abstract

An able-bodied, due to the exposure of the rocks in the northeast part of the boat path, the construction of Thengapattanam port encountered a major problem of dredging. In Thengapattanam, 2D electrical resistivity imaging (ERI) method and geotechnical soil texture investigation was carried out during underwater rock exposure to alleviate the need for continued dredging operations. The 2D ERI Marine Resistivity of special carbon floating electrodes with Wenner configuration technique used in this study. Res2DINV software was used to interpret the collected resistivity data to develop the apparent resistivity and pseudo-profile of exposed rock and soil in underwater. The Magneto Telluric Resistivity technique is used to locate the underground rock features of the port rock formation in deep mapping. The 2D picture shows the resistivity range of the three layers, such as top soil (0.06–0.9 Ω m soil contains clay), 1–1.5 Ω m sandy loam and 1.5–6 Ω m weathered gneiss, indicating subsurface geological conditions in the area. The support for texture analysis includes sampling, screening, weighing and calculation of graphic study for consolidation package of soil and rock formation. Marine 2D ERI and Magneto telluric resistivity studies are used for determine the formation of underwater rocks in river and coastal environments. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
09603182
Volume :
39
Issue :
2
Database :
Complementary Index
Journal :
Geotechnical & Geological Engineering
Publication Type :
Academic Journal
Accession number :
149071988
Full Text :
https://doi.org/10.1007/s10706-020-01530-z