基于水下超声测距方法的海底管道屈曲变形测量技术研究

Research on measurement technology of submarine pipeline buckling deformation based on underwater ultrasonic ranging method

针对浑浊海域海底管道屈曲变形缺陷测量,提出以超声测距为技术基础的海底管道变形精准测量方法,建立海底管道与测量传感器的统一水下坐标系,在此基础上构建管道外表面三维模型,为管道变形要素计算提供依据。在水下超声声速修正的基础上提出了测量精度控制措施,设计了两种超声测量换能器及测量系统,并进行了工程应用,对工程中海底管道变形进行了现场测量。测量结果表明,超声测量系统在施工海域出现高浑浊度、低能见度以及高流速等恶劣海况条件下运行良好,具有较高的测量精度,变形管道的三维模型构建误差小,能够准确计算管道的变形特征,满足工程应用要求,可为海底管道维修提供有效的数据支持。

In view of the measurement of buckling deformation defects of submarine pipelines in turbid waters,a precise measurement method for submarine pipeline deformation is proposed based on ultrasonic ranging technology.A unified underwater coordinate system for submarine pipelines and measurement sensors is established,and a three-dimensional model of theouter surface of the pipeline is constructed accordingly to provide a basis for calculating pipeline deformation elements.On the basis of underwater ultrasonic velocity correction,measurement accuracy control measures are proposed,and two types of ultrasonic measurement transducers and measurement systems are designed.Engineering applications are carried out to measure the deformation of submarine pipelines in the project.The measurement results indicate that the ultrasonic measurement system operates well under harsh sea conditions such as high turbidity,low visibility,and high flow velocity in the construction sea area,with high measurement accuracy.The three-dimensional model of the deformed pipeline is constructed accurately,and the deformation characteristics of the pipeline can be accurately calculated,meeting the requirements of engineering applications and providing effective data support for submarine pipeline maintenance.