中文摘要：

在文章规律（Ⅰ）基础上，进一步分析了海床软弱结构面断裂损伤对液化贯通带形成的影响，建立了海床土体在损伤及孔隙水压联合作用下的Mohr-Columb破坏准则。并在微元体强度服从Weibull分布前提下，通过将损伤因子与液化带贯通临界概率相结合，揭示了液化突变的必然性和可确定性。提出了土体临界液化孔压比uw／uf概念，进而引入uw／uf对液化规律进行分析，找到了不同土质海床的临界液化判别准则及其影响因素，准则对海洋工程地质灾害预测预报具有一定的指导意义。

英文摘要：

On the basis of the published paper （I）, the impact of the seabed soil structure surface rupture on the formation of the liquefied rupture band was further analyzed and a Mohr-Columb failure criterion of seabed soil un-der the combined effects of the micro-damage and pore water pressure was established.Under Weibull distribution conditions of micro-element strength, the inevitability and certainty characteristics of liquefied mutation were re-vealed through combination of the damage factor and the liquefied critical probability of the liquefied rupture band. The concept of critical pore pressure ratio uw u/f of soil liquefaction was put forward.Using this method, the judg-ment standards for critical liquefaction of different seabed soil and its influencing factors were found.The criterion law has a great significance for the forecast of marine engineering geological disasters.