A Study for Technical Operation and Management of Marine Dredger

• Main Authors: Tzang,Chi-Tay, 臧啟泰
• Other Authors: Tien, Wen-Kwo
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/yp4sdx

碩士 === 國立臺灣海洋大學 === 商船學系 === 107 === The drawing of marine transportation brings up the development of shipping industry .According to the statistics from tech News published in December 2017, about 90％of the international trade is via shipping. Hence strengthening the constructions and scale has become an important. Particularly, the port has played an important role in transportation .With the demands of the huge size vessel in the global shipping markets; a large number of ports to accommodate to construct the large-scale port, Project of the large area is needed. However due to the outdated and small size dredger in Taiwan the majority of maritime projects rely mainly on the participation of dredgers from foreign countries. The construction environment is complex and full of variety in Taiwan. Taking newly built port for example digging of harbor basin fairway caisson foundation, the engineering geologic condition makes all the difference between success and failure. The duration of construction is greatly affected by efficiency of dredger which have varies of types. This study introduced dredgers worldwide by its (1) operation function (2) basic type (3) excavator suit for designated bottom (4) advantages and disadvantages. The working days of operation has to be determined in the beginning but it´s often affected by the environment change of operation site and the machine types and misleading of the situation which caused damage to the excavator and delay. As the result of this study maritime dredging operation are divided into inner harbor and outer harbor. The un-shelter operation is more difficult than inner shelter due to four major reasons:(1)sea weather condition(2)machine condition(3)miss operation(4) unreliable operation of underwater survey. If carefully planned to assigned proper type of dredger to the working site by considering weather and bottom condition the operation period could be greatly reduced and dredger efficiency will be improved to reach economic goal.