• Login
    View Item 
    •   DSpace Home
    • Institute's contributions
    • Scholarly literature
    • View Item
    •   DSpace Home
    • Institute's contributions
    • Scholarly literature
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Geotechnical properties of siliceous sediments from the Central Indian Basin

    Thumbnail
    View/Open
    Curr_Sci_82_338.pdf (172Kb)
    Date
    2002
    Author
    Khadge, N.H.
    Metadata
    Show full item record
    Abstract
    Indian Deep-Sea Environment Experiment (INDEX) was carried out in a pre-selected area with low nodule abundance and uniform sediment type, for the purpose of environmental impact assessment of future deep-sea mining activities. Geotechnical testing of sediments was part of this multidisciplinary programme and was carried out on siliceous sediments from the Central Indian Basin. Sediments showed change in undrained shear strength and natural water content due to a simulated disturbance experiment conducted in the area. An increase in water content and significant decrease in the shear strength was observed in sediment layer of 0-5 cm from the disturbance area, but no significant changes were noted outside the area of disturbance. High values of porosity and water content were due to presence of 10-20% radiolarian tests and water-absorbing montmorillonite. The prominent loss of undrained shear strength of the sediments exposed to physical disturbance would affect the bearing capacity of the sediment and thus restrict the movement of the nodule collector. Other index properties such as wet bulk density, porosity and specific gravity inside and outside the disturbed zone remained unchanged, mainly due to similar grain size and dominant clay mineralogy.
    URI
    http://drs.nio.org/drs/handle/2264/280
    Collections
    • Scholarly literature [9127]

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV
     

     

    Browse

    All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV