泥沙掩埋海底光缆探测技术研究

Research on Detection Technology of Submarine Cables Covered by Sediment

鉴于海底光缆路由探测成果可为已有光缆维护与新增光缆铺设提供数据服务和决策支持,以我国东部海域某地区的海底光缆为例,对泥沙掩埋海底光缆进行探测与定位研究。针对上覆泥沙介质强波阻抗界面与海底光缆管径较小的特点,采用具有孔径合成、低频穿透、高分辨率特点的合成孔径声纳技术,对海底光缆的路由情况进行研究。实践证明,合成孔径声纳技术在泥沙掩埋海底光缆探测和识别方面取得良好的探测效果,可在实际工程中推广应用。

Detection of submarine optical cables can provide data for the maintenance of existing cables and laying new cables.Taking the submarine optical cable in eastern sea of China as an example,this paper conducts research of route detection and location on sand and mud buried submarine optical cables.Because the overlying medium has an interface with strong wave impedance,and the submarine optical cable has small diameter,synthetic aperture sonar technology which has aperture synthesis,low frequency penetration and high resolution is used for the route detection of submarine cable.lt has been proved by practice that the synthetic aperture sonar technology achieves good performance in detection and identification of sand and mud buried submarine cables,thus it can be applied in engineering projects.