纯水合物力学性质研究进展

余义兵; 宁伏龙; 蒋国盛; 张凌

doi:10.6052/1000-0992/11-136

纯水合物力学性质研究进展

doi: 10.6052/1000-0992/11-136

余义兵^1,2,
宁伏龙^1,2, ,,
蒋国盛^1,2,
张凌^1,2

1.
中国地质大学(武汉)工程学院, 武汉 430074
2. 岩土钻掘与防护教育部工程研究中心, 武汉 430074

基金项目: 国家自然科学基金项目(40974071), 湖北省自然科学基金重点项目(2010CDA056), 中国地质大学(武汉) 摇篮计划项目(CUGL100410) 资助

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通讯作者:
宁伏龙

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出版历程
- 收稿日期: 2011-09-30
- 修回日期: 2012-02-11
- 刊出日期: 2012-05-25

MECHANICAL BEHAVIOR OF PURE HYDRATES

YU Yibing^1,2,
NING Fulong^{1,2
, ,},
JIANG Guosheng^1,2,
ZHANG Ling^1,2

1.
Faculty of Engineering, China University of Geosciences, Wuhan 430074, China
2. Engineering Research Center of Rock-Soil Drilling & Excavation and Protection, Ministry of Education, Wuhan 430074, China

Funds: The project was supported by the National Natural Science Foundation of China (40974071), Natural Science Foundation of Hubei Province (2010CDA056) and the Fundamental Research Funds for the Central Universities (CUGL100410).

More Information

Corresponding author: NING Fulong

摘要

摘要: 纯水合物力学性质是含水合物沉积物力学性质研究的基础, 其与水合物开采、海底地质灾害防治、CO₂埋藏、气体储运等诸多方面都密切相关. 然而受水合物形成条件和样品本身影响, 目前对纯水合物力学性质研究还存在很多争议和不足, 其中最主要的问题就是难于获取高纯度的水合物实验样品. 据此本文从实验和理论计算两个方面对当前纯水合物力学性质的研究进展进行了总结和分析, 提出可从宏观实验技术改进和微观分子动力学模拟两方面结合来尽可能消除水合物样品本身的影响, 揭示纯水合物力学性质与冰异同的内在原因, 掌握水合物样品残余水气和微孔隙对其力学性质的影响机理, 从而实现水合物微观力学本质与宏观力学特性间的衔接, 为今后含水合物沉积物力学性质及水合物力学性质相关领域研究奠定坚实的理论基础.
- 水合物 /
- 力学性质 /
- 实验测试 /
- 理论计算 /
- 分子动力学模拟
Abstract: Mechanical behavior of pure hydrates are foundation of the research on mechanical properties of hydrate-bearing sediments, and are thus closely connected with production of gas hydrates, geological hazards, CO₂ storage, gas storage and transportation and many other aspects. However, limited by the conditions of hydrate formation and the defects of hydrate samples, there are still some disputes and gaps in the current study of mechanical properties of pure hydrates. In this paper, we summarized and analyzed the state-of-art of mechanical behavior of pure hydrates from experimental measurements and theoretical calculations, respectively. It is suggested that the combination of improved macroscopic experiments and microscopic molecular simulations is a good way to eliminate the influence of the defects of hydrate samples and reveal the origins and essences of similarities and differences between pure hydrates and ices, to understand the effects of microporosity, residual water and gas in the hydrate samples and to bridge the microscopic characteristics and the macroscopic mechanical behavior for pure hydrates.
- pure hydrate /
- mechanical property /
- experimental measurement /
- theoretical calculation /
- MD simulation

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