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Numerical study on the stratum's responses due to natural gas hydrate dissociation
Lu L; Zhang XH(张旭辉); Lu XB(鲁晓兵); Lu, XB (reprint author), Univ Chinese Acad Sci, Dept Engn Sci, Beijing, Peoples R China.; Lu, XB (reprint author), Chinese Acad Sci, Inst Mech, Dept LMFS, Beijing, Peoples R China.
2017
发表期刊SHIPS AND OFFSHORE STRUCTURES
卷号12期号:6页码:775-780
ISSN1744-5302
摘要Natural gas hydrate (NGH) dissociation can cause many kinds of potential hazards. Dimensional analysis is used first to obtain the controlling factors for NGH dissociation-induced stratum's responses. And then the effects of the controlling factors on the deformation and stress distribution have then been numerically investigated. A simplified critical condition for judging the instability of gentle inclined stratum after NGH dissociation was proposed. It is shown that the maximum settlement is located near the upper part of the slide body while the soil uplifts near the lower part. The fast change of the stress and deformation is located at the interface between hydrate-bearing stratum (HBS) and over layer. The slope angle has the largest effects on the responses of the stratum. The effects of modulus and water depth on the stratum's instability are small. There is a critical extension length of dissociation zone over which landslide will occur which is determined by the strength parameters, slope angle, friction coefficient and height of the over layer.
关键词Gas Hydrate Dissociation Zone Slope Instability Deformation
DOI10.1080/17445302.2016.1241366
收录类别SCI ; EI
语种英语
WOS记录号WOS:000400763800004
关键词[WOS]SEA
WOS研究方向Engineering
WOS类目Engineering, Marine
项目资助者National Natural Science Foundation of China [11272314, 51239010, 11102209] ; Project of CAS-CNPC Strategic Alliance
论文分区二类
力学所作者排名1
引用统计
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/72132
专题流固耦合系统力学重点实验室
通讯作者Lu, XB (reprint author), Univ Chinese Acad Sci, Dept Engn Sci, Beijing, Peoples R China.; Lu, XB (reprint author), Chinese Acad Sci, Inst Mech, Dept LMFS, Beijing, Peoples R China.
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GB/T 7714
Lu L,Zhang XH,Lu XB,et al. Numerical study on the stratum's responses due to natural gas hydrate dissociation[J]. SHIPS AND OFFSHORE STRUCTURES,2017,12(6):775-780.
APA Lu L,张旭辉,鲁晓兵,Lu, XB ,&Lu, XB .(2017).Numerical study on the stratum's responses due to natural gas hydrate dissociation.SHIPS AND OFFSHORE STRUCTURES,12(6),775-780.
MLA Lu L,et al."Numerical study on the stratum's responses due to natural gas hydrate dissociation".SHIPS AND OFFSHORE STRUCTURES 12.6(2017):775-780.
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