摘要
研究海洋污损生物藤壶(Barnacle)不同生长阶段附着强度,可为科学制定藤壶清除规范及设计相关机械设备提供依据。本文采用浸泡法在湛江调顺岛(21°31′N,110°41′E)实海中挂板,结合形貌观察藤壶生长过程,利用自行设计的剪切强度测试装置,选取网纹藤壶测试不同生长阶段剪切强度。结果表明:试板浸泡10 d,幼体藤壶开始附着;30 d试板表面藤壶覆盖面积约占30%,基底直径1~6 mm,部分藤壶死亡形成空壳;60 d试板约50%面积被藤壶覆盖,试板表面有覆膜,空壳现象加剧,藤壶基底直径最大达10 mm;90 d试板约95%面积被藤壶覆盖,出现藤壶相叠现象,基底直径1~13 mm。藤壶附着生长过程中,剪切强度变化符合“快-慢”的特点,以藤壶基底直径为变量,构建藤壶剪切强度Logistic增长模型,决定系数R2=0.99,说明模型拟合良好。利用构建的Logistic增长模型将藤壶剪切强度划分为速增期(基底直径4.0~6.4 mm),缓增期(基底直径6.4~8.7 mm)及渐停期(基底直径>8.7 mm)3个阶段。结合藤壶附着生长过程,藤壶在附着后采用机械方式清除的最佳清除时期在速增期。
Studying the adhesion strength of marine-fouling barnacles in different growth cycles can provide a basis for scientifically formulating barnacle removal specifications and designing related mechanical equipment.In this study,the growth process of barnacles was observed through barnacle immersion in a sea on Diaoshun island(21°31′N,110°41′E)in Zhanjiang,and the shear strength of the barnacles at different growth periods was measured using a self-designed shear test device.The results showed that the barnacle larvae began to attach to the surface of the sample after 10 d of immersion.Barnacles covered~30%of the sample surface on day 30,and the barnacle diameter was approximately 1–6 mm,and some barnacles died to form empty shells.On day 60,~50%of the sample surface was covered with barnacles,and the surface was covered with a film,which aggravated the formation of empty shells,and the largest barnacle diameter was 10 mm.Approximately 95%of the 90 d sample was covered with barnacles,which overlapped to reach a diameter of 1–13 mm.During the barnacle attachment process,the barnacle shear strength first rapidly increased and then slowly increased with time.A logistic growth model of barnacle shear strength change with the barnacle diameter was established,with the determination coefficient R2=0.99,which indicates that the model fits well.According to the logistic growth model,the change in barnacle shear strength can be divided into three stages:a rapid growth stage(base diameter 4.0–6.4 mm),slow growth stage(base diameter 6.4–8.7 mm),and gradual stop stage(base diameter>8.7 mm).The best period of the mechanical removal of attached barnacles was the rapid increase period.
作者
李友炽
王贵
吴敬权
邓培昌
张福泉
黄俊毅
LI You-chi;WANG Gui;WU Jing-quan;DENG Pei-chang;ZHANG Fu-quan;HUANG Jun-yi(College of Mechanical Engineering,Ocean University of Guangdong,Zhanjiang 524000,China;College of Chemistry and Environment,Ocean University of Guangdong,Zhanjiang 524000,China)
出处
《海洋科学》
CAS
CSCD
北大核心
2023年第8期60-67,共8页
Marine Sciences
基金
广东省海洋装备及制造工程技术研究中心建设资助项目(A16287)。
