潜标抗漂移布放技术

Anti-drift Technology for Submerged Buoy Deployment

对潜标定位布放中的抗漂移技术进行研究。在满足总浮力需求的前提下,从提高回收可靠性的角度出发,针对4种潜标结构方案,采用集中质量法建立潜标的数学模型,对比分析浮力部件、海流速度和海床底质对水平漂移量的影响。仿真结果表明:增加浮力部件会增大水平漂移量,而改变浮力部件的安装位置对水平漂移量的影响较小;海流速度越大,潜标在水平方向上的漂移量就越大,在布放潜标时,需考虑当地的海流速度;海床底质对峰值张力和稳态张力的影响较小,但在触底过程中,缆索交替出现松弛和张紧现象,海床刚度越大,振动幅度和频率就越大。

The anti-drift technology of submerged buoy deployment is studied.On the premise of satisfying the demand of total buoyancy and from the respective of improving recovery reliability,the mathematical models of four submerged buoy structures are established using the lumped mass method to compare the horizontal drifts.The influence of different ocean current and sea bed conditions on the horizontal drifts are analyzed.The simulation result shows that the horizontal drift increases with the increase of buoyancy components,but the installation position of buoyancy components has small influence on the horizontal drift.The larger the current speed,the larger the drift horizontally,so it is necessary to consider the local current speed when the submerged buoy is deployed.The condition of seabed has small influence on the tension amplitude and its steady state,but the cable is loosened and tightened alternatively during the process of bottoming,therefore the stiffener the seabed,the larger the vibration amplitudes and the vibration frequencies.