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題 名 | 箱網結構設計與分析之研究=A Practical Study of Design and Analysis for a Net-Cage Structural System |
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作 者 | 俞克儉; 呂學信; 周耀烋; | 書刊名 | 漁業推廣工作專刊 |
卷 期 | 17 1999.06[民88.06] |
頁 次 | 頁39-56 |
分類號 | 439.5 |
關鍵詞 | 箱網結構; 箱網養殖; Relative volume ratio; Volume deformation ratio; Elastic space; Stabilizes net cage; |
語 文 | 中文(Chinese) |
中文摘要 | 臺灣養殖業一直處於水產業之領導地位,且為國家爭取到可觀的外匯。然因養殖業之發達,亦相對地付出慘痛的社會成本,如地層下陷、土壤鹽化等後遺症。為減少社會成本的支出,並使養殖成本得以降低,以海為田之海域箱網養殖似為一可行之路。而強大的波浪和海流常嚴重破壞箱網,是造成箱網養殖魚群死亡的主因,因此本研究將以實務為主,以彈性空間的觀念,利用模型實驗對傳統箱網加以改良,針對網具固定裝置之缺失而設計一套能抵抗強大波浪及海流之網具穩定裝置。在外在海況條件相同之情況下,穩定式箱網不但可降低繫留索張力逾50%以上,另一方面網袋在流水衝擊下的箱網容積率可提高二倍。而箱網容積變形率則可降至50%以下,相對於傳統箱網,有形的效益提高四倍,充分的擴充箱網養殖空間,相對的減少魚類之死亡率,提昇養殖效益。 |
英文摘要 | Aquaculture not only exercises leadership in her aquatic product industry but also wins much valuable foreign exchange In Taiwan. Following the well-developed aquaculture, however, the commensurate natural resources are paid for the loss such as stratums subside, soil salinized, and so on. In order to reduce the loss and to increase the aquatic product, aquaculture using marine net cages seems to be a possible way. The objective of this practical study is, based on a model test, to improve a net-fixed device of the traditional cage for resisting strong waves and currents that always cause fish death due to a serious destruction of the cage. A new stable design of the cage is proposed in the study under consideration of both tension reduction of the mooring cables and volume increase of the net shape. |
本系統中英文摘要資訊取自各篇刊載內容。