T. Toyota, T. Nakashima, T. Fujita, S. Ishii, K. Hagiwara, K. Merino, K. Shimizu
{"title":"Installation Of A Deep-sea Water Supply System For Mariculture","authors":"T. Toyota, T. Nakashima, T. Fujita, S. Ishii, K. Hagiwara, K. Merino, K. Shimizu","doi":"10.1109/OCEANS.1989.592890","DOIUrl":null,"url":null,"abstract":"A system was installed of pumping 460 m3 per day of deep-sea water from a depth of 320 m to shore for cultivating fish, shellfish, and algae. The material and the installation method were tested of a deep-sea water pipe. The particularly severe wave conditions that exist during a typhoon at the system site pose unique problems. It was determined that the most suitable material for a deep-sea water pipe was high-density polyethylene with steel wire armor, and that the reel-barge method was optimal for laying this pipe. Laying work was done accurately in a short period (two days). It was found that laying high-density polyethylene pipe with a steel wire armor by the reel-barge method was the best combination for construction of a deep-sea water supply pipeline. Before laying work, it was predicted that approximately 5 % of the total pipe was necessary for extra pipe because of possible errors during laying. During actual laying work, the pipe length was found to be practically equal to a designed pipeline length.","PeriodicalId":331017,"journal":{"name":"Proceedings OCEANS","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1989-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings OCEANS","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/OCEANS.1989.592890","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
A system was installed of pumping 460 m3 per day of deep-sea water from a depth of 320 m to shore for cultivating fish, shellfish, and algae. The material and the installation method were tested of a deep-sea water pipe. The particularly severe wave conditions that exist during a typhoon at the system site pose unique problems. It was determined that the most suitable material for a deep-sea water pipe was high-density polyethylene with steel wire armor, and that the reel-barge method was optimal for laying this pipe. Laying work was done accurately in a short period (two days). It was found that laying high-density polyethylene pipe with a steel wire armor by the reel-barge method was the best combination for construction of a deep-sea water supply pipeline. Before laying work, it was predicted that approximately 5 % of the total pipe was necessary for extra pipe because of possible errors during laying. During actual laying work, the pipe length was found to be practically equal to a designed pipeline length.