基于三维声呐点云的河口水闸水下结构安全评估

Underwater structure safety assessment of estuary sluice based on 3D sonar point cloud

河口水闸水下结构安全对于水闸工程、整个河道,以及周边居民地的安全具有重要意义。在低可视度的水体环境中,采用传统人工潜水探摸方式进行水下结构安全检测效率低下。为提高效率,三维扫描声呐逐步应用于相关水下结构的安全检测中。本文以BlueView BV5000型三维扫描声呐系统在苏州河河口水闸水下结构的实测数据为基础,经滤波、测站拼接等处理过程,利用所得三维声呐点云对该水闸的水下结构进行安全评估。采用人工探摸方式对评估结果进行验证,结果表明,三维扫描声呐在水下结构安全评估中具有优越性,可为后续运维保障提供数据基础。

The estuarine sluice underwater structure safety has a great significance on the safeties of the sluice engineering,the river course and surrounding residents.In the low-visibility water environment,the traditional safety detection method of underwater structures based on artificial diving is very inefficient.In order to improve the efficiency,3D scanning sonars have been widely applied on the safety evaluation of important underwater structures.In this paper,the BlueView BV5000 3D scanning sonar is used for the underwater structure safety evaluation of the estuary sluice on Suzhou River.Based on the measured data,the underwater structure safety is evaluated by using the processed 3D sonar point cloud after data filtering and splicing.The sonar evaluation results verified with manual inspection prove the advantages of 3D scanning sonar in underwater structure safety assessment,and further provide the data basis for subsequent maintenance.