一、问题的提出在烟台西港池二期工程可行性研究阶段勘察过程中,发现码头区普遍存在一层厚约4～14米(底面标高—10～—20米)海相沉积的亚粘土。其沉积厚度呈由南(靠近一期码头一侧)向北逐渐增厚变化趋势。该层土是一种淤泥混砂或砂混淤泥状态的软弱土层,现场标准贯入试验的贯入击数N很小,多在1、2击,甚 I. PROBLEM PROBLEMS During the investigation of the feasibility study stage of the second phase project of West Bay Pond in Yantai, it was found that there was a layer of marine loamy deposits of about 4 to 14 meters in thickness (bottom elevation -10 to -20 meters) in the quay area. Its deposition thickness is gradually increasing from south to north (close to the first phase of the terminal). This layer of soil is a silt or sand mixed silt state soft soil, the penetration of the standard site penetration test is very small, more than 1, 2 hit, and even