Instrumentation problems related to determining geotechnical properties of ocean sediments

Chari, T.R.

doi:10.1109/joe.1978.1145392

Cited by 2 publications

(1 citation statement)

References 52 publications

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“…By far the majority of submarine in situ soil testing has been accomplished in deep penetration boreholes drilled from platforms, barges or ships [1][2][3]. Shallow penetration in situ testing has been carried out by means of unmanned tethered platforms [4][5][6] and from manned submersibles. Submersibles have been instrumented with a cone penetrometer [7][8], inclinometer [9], and a vane shear, cone penetrometer and densitometer combination [10].…”

Section: Introductionmentioning

confidence: 99%

Submersible mountedin situ geotechnical instrumentation

Lambert

1982

Geo-Marine Letters

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A series of new miniaturized in situ geotechnical instruments were developed and subsequently field tested with the Deep Sea Research Vessel (DSRV) Alvin during October of 1980 in various sedimentary features on the U.S. East Coast continental slope and upper rise within the Wilmington Geotechnical Corridor. These instruments are herein described and include a cone penetrometer, resistivity/conductivity probe, miniature in situ soils testing system has not been attempted previously from a submersible, primarily because of the expense and general unavailability of a suitable vehicle.The geotechnical instrument system used with the Alvin was designed to collect in situ shear strength (cone resistance), porosity, wet bulk density, pore pressure (including induced insertion pressure and its dissipation rates) and seafloor gradient data. The coring system was intended to ground truth the piezometer, an inclinometer and a small diameter coring system. The various drive systems, controls and data recording systems in situ measurements by laboratory testing and to obtain a soil are also briefly discussed, sample for further testing such as size analysis and Atterberg limits.

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