单波束测深技术在海底管道检测中应用

为查明海底管道的位置和掩埋状态,在海底管道检测中使用了单波束测深技术。对探测过程中海底管道的声波反射特征和解释方法进行了研究,研究结果表明,浅水时反射曲线更能反映管道的真实形态;深水时无论是绕射曲线还是反射曲线均与管道的真实形态有较大差异。波束角会严重影响单波束对海底管道的探测能力。通过对测量记录的分析,可对海底管道的位置、埋设深度和是否发生悬空等状况进行判断。

Application of single-beam echo sounding techniques in submarine pipeline inspection

In order to inspect the pipeline position and quantitate the pipeline settling depth,the single-beam echo sounding technique is used in submarine pipeline inspection.The reflection features from the pipeline and the interpretation methods of the echogram are analyzed.The results suggest that the reflection curve can represent the pipeline vividly in the shallow water,while both the reflection and diffraction curves can not do so in the deep water.The beam angle can badly influence the inspection ability of the single beam echo sounder.Based on the analyses of the echogram,the pipeline position,the pipeline settling depth and the free-span state can be quantitated.