Conference Proceedings

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Author: search.filters.author.Sivakholundu, K. M.

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    Evaluation of river regulatory measures in hughly estuary using tidal asymmetry characteristics
    (IEEE, 2006) Sivakholundu, K. M.; Kathiroli S.; Mani J. S.; Idichandy V. G.
    Tidal asymmetry has a profound effect on estuarine hydrodynamics and sedimentation pattern. The information of tidal asymmetry can be a useful tool to evaluate the flow pattern in shallow estuary and characterize the dominance of flood or ebb flow. The effects of features (like obstructions, depressions, etc.) and discharge variation in a theoretical channel section is simulated to quantify the parameters of tidal asymmetry. A set of proposed river regulatory measures in a shallow estuary (Hughly, India) was taken up for evaluation using tidal asymmetry parameters to check whether this may be used as additional tool. The indications provided (flood dominance and hence sediment importing regime) with asymmetry parameters do match with field conditions (based on bathymetry survey data). The asymmetry parameters may be put to use to evaluate the change in flood/ebb dominance in relative terms in a given section.
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    Design of sustainable shore protection solution using geosynthetic tubes
    (GA 2016 - 6th Asian Regional Conference on Geosynthetics, 2016) Kiran, A.; Ravichandran, V.; Jebakumar, P.; Abhishek, T.; Sivakholundu, K. M.
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    Application of parametric acoustics for shallow-water near-surface geophysical investigations
    (IEEE, 2006-05) Vasudevan, Manoj; Sivakholundu, K. M.; Venkata Rao, D.; Kathiroli, S.
    Shallow-water near-surface geophysical investigations were carried out, under two different scenarios - one to assess the status of a pipeline in the West coast and the other to assess the effect of water-injection dredging in the East coast of India. In both these investigations, Parametric Sediment Echo Sounder (SES-2000), a system developed by Innomar Technologie GmbH, which makes use of the parametric acoustical effect, was used. In the former case, profiles were taken across a pipeline at regular intervals to determine whether it was buried or exposed. The parametric system produces a 2D geo-acoustic section in which the pipe is indicated by a hyperbolic curve. The exposed height or buried depth of the pipeline at a crossing is then estimated. This investigation could, also, reveal the geomorphologic changes in the immediate vicinity of the pipeline. In the latter case, parametric acoustics was utilized to provide supplementary results for the assessment of water-injection dredging. Parametric acoustic data could expose the abrupt termination of certain near-seabed layer interfaces and sediment accumulations along steep slope, quite convincingly. SES-2000 proved to be handy to investigate the near-surface sub-seabed, especially in areas where conventional or popular methods find practical difficulties to be carried out.
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    Development of autonomous dredger for inland waterways and enclosed water bodies
    (EADA(I) Silver Jubilee Seminar, 2018-03-15) Pavan Kumar, G. V. V.; Ramesh, U. S.; Sivakholundu, K. M.
    The conceptual layout of the proposed autonomous dredger is presented. The potential for dredging in inland water bodies - reservoirs and inland waterways – in India is five times larger than the conventional dredging (ports and channels). Unlike arine dredgers, these small dredgers cannot be directly scaled up due to restrictions imposed by transportation, environmental conditions, draft and deployment. To overcome some of the difficulties, Indian Maritime University at Visakhapatnam campus IMU[V] is working on the development of an Autonomous Dredger (AD). The design philosophy revolves around modularity, ase of transport and autonomous operation. Modularity will ensure that the dredger can be dismantled for road transport and assembled at dredge site with minimal handling machinery. AD is being designed for calm water operations with four point mooring support and meant for clay and sand removal by water jet based dredging. The autonomous operation will ensure unattended dredging operation on 24x7 basis. The AD will have an in-built bathymetric survey system that will provide pre and post dredging quantification. While deployment the overall reservoir site will be divided into small ‘cell’ of convenient size (say 100 x 100m). After deployment, the AD will survey, dredge and verify the work done autonomously within the cell. Manual intervention for operational purpose will be kept to a minimum for shifting the AD from one cell to next.