目前有关阻力及空间状态的理论计算和模型试验基本上针对单个水下拖体, 而对多缆地震船各类拖体的综合受力和姿态则较少受到关注。为方便施工团队在海上快速预测拖体的状态, 在国内外学者对水下拖体的流体阻力研究基础上, 分析多缆地震船水下拖体的结构和流体阻力特征, 提出简化的阻力计算及横向姿态预测方法。文章以常用的多缆地震船拖体配置为例, 得到的估算结果与实际的作业状态较为吻合, 证实了该方法的有效性。

At present, theoretical calculation and model test about resistance and space state basically focus on a single underwater towed body, while the comprehensive resistance and stance of towed objects of multi-streamer seismic survey vessels are less concerned. For the convenience of the operators to predict the state of towed bodies in the sea quickly, the structure of multi-streamer seismic survey vessels for towed objects and the character of fluid resistance are analyzed on the basis of existing research on the fluid resistance of underwater towed objects. A simplified way to calculate the resistance and to estimate the horizontal stance is presented. This paper takes the configuration of common towed objects as an example, and the difference between estimation result and actual working status is within the permitted scope. The effectiveness of the proposed method is confirmed.