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Centrifugal experiment on stratum instability and failure process due to gas hydrate dissociation
Lu XB(鲁晓兵); Zhang XH(张旭辉); Hu GH; Lu XB(鲁晓兵)
Source PublicationGlobal View of Engineering Geology and the Environment - Proceedings of the International Symposium and 9th Asian Regional Conference of IAEG
2013
Pages197-201
Conference NameInternational Symposium and 9th Asian Regional Conference of IAEG "Global View of Engineering Geology and the Environment"
Conference DateSEP 24-25, 2013
Conference PlaceBeijing, PEOPLES R CHINA
AbstractCentrifugal experiments were carried out to investigate the stratum instability caused by the dissociation of gas hydrate. First gas hydrate-bearing sample was synthesized using biological anaerobic fermentation method. The silty sand was taken as the skeleton. Then four centrifugal experiments were carried out to study the responses of stratum to the dissociation of the gas hydrate. The characteristics of stratum slide and pore pressure variation and displacement were observed. It is shown that the produced gas can cause the increase of pore pressure and slope slide towards the toe during and after dissociation of gas hydrate. The failure occurs first at the toe of the sample and slides downwards along an arc sliding face. Cracks form at the top of the slope. The slope angle becomes smaller and smaller. This work is beneficial to the further study on the instability conditions of stratum due to the dissociation of gas hydrate.
KeywordMethane Gas Hydrate Centrifugal Experiments Stratum Stability Failure Process
DepartmentLMFS海洋土力学(LHO)
ISBN978-1-138-00078-0
Indexed ByEI
Language英语
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/48314
Collection流固耦合系统力学重点实验室
Corresponding AuthorLu XB(鲁晓兵)
Recommended Citation
GB/T 7714
Lu XB,Zhang XH,Hu GH,et al. Centrifugal experiment on stratum instability and failure process due to gas hydrate dissociation[C]Global View of Engineering Geology and the Environment - Proceedings of the International Symposium and 9th Asian Regional Conference of IAEG,2013:197-201.
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