近代黄河水下三角洲海底声波探测资料和土工资料揭示 :波浪、潮流在所研究区域海底沉积物中产生的差异侵蚀和不同的破坏行为受沉积物土工特性的控制。研究表明 ,粘粒含量低于10 % ,含水量在 30 %～ 4 5% ,孔隙比在 0 .8～ 1.2之间的土体抵抗破坏的能力较差 ,土体破坏形成塌陷凹坑 ;粘粒含量在 10 %～ 2 0 % ,含水量在 2 0 %～ 30 % ,孔隙比小于 0 .8的土体抵抗破坏的能力相对较强 ,被保留下来形成蚀余高地 The detection data and geotechnical data of submarine sound waves in the Yellow River submarine delta revealed that the differential erosion and different destructive behaviors of wave and tidal current in the seabed sediments of the studied area are controlled by the geotechnical characteristics of the sediments. The results show that the content of clay is less than 10% and the water content is 30% ~ 45%. The porosity is less than 0.8 ~ 1.2, The capacity of the soil with 10% ~ 20% of grain content and 20% ~ 30% of water content and the void ratio of less than 0.8 is relatively strong, and is retained to form the eroded heights