中文摘要：

在机械振动作用下,利用环境扫描显微镜,对水下淤泥样品液化前后的微观结构进行了观测和分析,获得了振动前后淤泥样品颗粒表面形貌.分析结果发现,淤泥样品在振动载荷作用后,泥沙粒径分布范围缩小,平均粒径减小,黏粒含量有所增加,孔隙率变大.振动载荷的作用破坏了泥沙的微观结构,使其释放出大量的细小颗粒,进而影响其宏观的物理力学特性.

英文摘要：

Using an advanced environmental scanning microscope, the microstructures of underwater sedimentation samples pre/post action of mechanical vibrations were observed and analyzed respectively, and micro-structural changes of the sediment samples by vibrations described. The results show that particle size distribution and the mean particle size decreased, and the clay content and porosity increased duo to the vibrations. The aggregate of sedimentation is significantly and efficiently broken clown by the mechanical vibration and more physical and mechanical properties are affected.