海洋含气土工程特性研究现状  

Current Research Situation of Seabed Gas-bearing Soil Engineering Characteristics

作　　者：赵阳阳[1] 刘润[1] 

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300072

出　　处：《石油工程建设》2013年第1期1-5,87,共5页Petroleum Engineering Construction

基　　金：国家自然科学基金资助项目(40776055);国家创新研究群体资助项目(51021004);海洋工程国家重点实验室(上海交通大学开放课题项目资助)(1002)

摘　　要：近年来,海洋工程建设过程中出现灾害事故的一个重要原因是海床含气土中天然气水合物受外界扰动而分解,改变了海洋地基土体的工程性质,因此,对于海洋含气土工程特性的研究越来越受到人们的重视。文章总结了海洋含气土工程特性的研究现状,阐述了含气土工程特性室内试验的样本来源,介绍了评价海洋含气土工程特性的几种试验方法:微观结构观测试验、声学特性测试试验和土体力学特性试验,并对含气土工程特性研究中存在的问题和发展趋势进行了讨论。In recent years, decomposition of gas hydrate in seabed caused by outside disturbance is one of the most important reasons for disasters and accidents happening in marine engineering construction, which changes engineering properties of marine soil. So the research on engineering properties of seabed gas-bearing soil is attached more importance. In this paper, the current research situation of seabed gas -bearing soil engi neering properties is summarized and the basic sample sources for indoor test are described. Several test methods for evaluating gas-bearing soil properties are discussed, i.e. microstructure observation experiments, acoustic characteristics tests and soil mechanical characteristics tests. The problems in the research on gas-bearing soil properties and the research trend are also discussed.

关 键 词：海洋含气土 工程特性 微观结构 本构模型 

分 类 号：P744.4[天文地球—海洋科学]