海底抛石声学探测方法——以渤海湾人工岛抛石检测为例

AN ACOUSTIC DETECTION METHOD FOR UNDERWATER RIPRAP——AN EXAMPLE FROM THE ARTIFICIAL ISLAND IN THE GULF OF BOHAI

通过水深测量和参量阵浅地层剖面测量相结合方法,从声学探测角度对海底抛石的检测方法进行探讨,结合渤海某人工岛抛石检测项目中应用实例,解释了抛石的厚度和分布情况。得出海底抛石厚度的分析应结合人工岛的侵蚀和淤积的分布情况判断,位于冲刷区的海底抛石厚度可以直接利用海底地形变化量判断,位于淤积区海底抛石厚度应为海底地形变化量减去顶部淤积量。

Acoustic methods of depth survey and bottom profiler array parameter measurement were used to detect underwater riprap,taking the artificial island in the Gulf of Bohai as the case history.The thickness and distribution pattern of the riprap were revealed.Data show that the calculation of the thickness of seabed riprap should take the erosion and siltation of the artificial island into account.The thickness of the riprap in the erosional seabed can be directly used to judge the change in submarine topography.In the siltation area,however,the siltated sediments should be deducted to monitor the topographic changes.