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http://dx.doi.org/10.5394/KINPR.2015.39.6.539

A Fundamental Study to Estimate Construction Performance of Subsea Waterjet Trenching Machine  

Na, Kyoung-Won (Ocean Science and Technology School, Korea Maritime and Ocean University)
Beak, Dong-Il (Department of Civil Engineering, Korea Maritime and Ocean University)
Hwang, Jae-Hyuk (Department of Naval Architecture and Ocean Systems Engineering, Korea Maritime and Ocean University)
Han, Sung-Hoon (Department of Naval Architecture and Ocean Systems Engineering, Korea Maritime and Ocean University)
Jang, Min-Suk (Ocean Science and Technology School, Korea Maritime and Ocean University)
Kim, Jae-Heui (Department of Naval Architecture and Ocean Systems Engineering, Korea Maritime and Ocean University)
Jo, Hyo-Jae (Division of Naval Architecture and Ocean Systems Engineering, Korea Maritime and Ocean University)
Publication Information
Journal of Navigation and Port Research / v.39, no.6, 2015 , pp. 539-544 More about this Journal
Abstract
There is drift toward moving offshore structures operating sites to deep water that brings subsea systems and types of apparatus to meet more severe environment than onshore. At this moment, climatic condition and seabed state affect trenching efficiency so trenching process is need to make steady progress in a short time. This paper is research on estimation about construction performance of waterjet trenching machine mounted on ROV trencher. Optimal number of nozzles that can maximize trenching efficiency is selected by considering clearance and angle of nozzles through CFD. Then verified effectiveness of waterjet apparatus on the result of trenching depth and velocity by model test analogized performance for construction work of waterjet trenching machine.
Keywords
Construction performance; Work efficiency; Waterjet trenching machine; Subsea cable; Subsea pipeline;
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