Centrifugal experiment on stratum instability and failure process due to gas hydrate dissociation

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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)
会议录名称	Global View of Engineering Geology and the Environment - Proceedings of the International Symposium and 9th Asian Regional Conference of IAEG
	2013
页码	197-201
会议名称	International Symposium and 9th Asian Regional Conference of IAEG "Global View of Engineering Geology and the Environment"
会议日期	SEP 24-25, 2013
会议地点	Beijing, PEOPLES R CHINA
摘要	Centrifugal 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.
关键词	Methane Gas Hydrate Centrifugal Experiments Stratum Stability Failure Process
课题组名称	LMFS海洋土力学(LHO)
ISBN号	978-1-138-00078-0
收录类别	EI
语种	英语
文献类型	会议论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/48314
专题	流固耦合系统力学重点实验室
通讯作者	Lu XB(鲁晓兵)
推荐引用方式 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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