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通过对珠江口盆地广布的贝壳砂的化学组分、粒度组成、形成时代的研究以及对砂土进行直剪试验、高压固结试验、常规三轴剪切试验和动三轴试验，对贝壳砂的土力学性质及动载荷作用下的稳定性作了初步分析，获取了贝壳砂的基本物理力学参数并评价了地震作用下砂土液化的可能性，为海洋工程的设计和施工提供了基本的物理力学参数。
Through the study of the chemical composition, grain size and age of the widely distributed shell sand in the Pearl River Mouth Basin as well as the direct shear test, high pressure consolidation test, conventional triaxial shear test and dynamic triaxial test on sandy soil, The mechanics properties of sand and the stability under the action of dynamic load were analyzed. The basic physico-mechanical parameters of shell sand were obtained and the possibility of sand liquefaction under earthquake was evaluated, which provided the basic for the design and construction of marine engineering Physical and mechanical parameters.