Report test programme geocontainers

Report test programme geocontainers

Anonymus, A.

1995-11-01

This report presents the results of the test programme to investigate the dumping of geocontainers at relatively large water depths. The test programme was executed by Van Oord ACZ in April 1994 in the sand pit at Kekerdom, near Nijmegen, The Netherlands. In the test programme 4 geocontainers with a theoretical volume of 368 m' were dumped at water depths with a maximum of 20 m.The test programme has a triple purpose: (i) To develop an appropriate execution method to dump geocontainers accurately at large water depths without failure. (ii) To investigate the behaviour of geocontainers during dumping and determine the infiuence of the fill material, filling grade and water depth. (iii) To set up a theoretical model to simulate the behaviour of geocontainers during dumping. Present report starts with a detailed description of the test programme including the geocontainers, the instrumentation, the execution method and the equipment. Further, the test results are discussed in detail. The test results are based on the measurements of the velocity and the pressure inside the geocontainer during the dump a the visual inspection of the geocontainer after the dump by divers. Finally, the behaviour of the geocontainers during the dump, i.e. the fall velocity during the dump and the inside pressure and tensile force in the geotextile during the impact on the sub soil, has been simulated by means of a theoretical model.

geocontainer

TPG192700

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