气候变化领域集成服务门户(CCPortal): Centrifuge model test on performance of thermosyphon cooled sandbags stabilizing warm oil pipeline buried in permafrost

CCPortal

DOI	10.3724/SP.J.1226.2021.20075
	Centrifuge model test on performance of thermosyphon cooled sandbags stabilizing warm oil pipeline buried in permafrost
	Li, GuoYu; Jing, HongYuan; Volkov, Nikolay; Ma, Wei; Chen, PengChao
通讯作者	Li, GY (通讯作者)，Chinese Acad Sci, NIEER, State Key Lab Frozen Soil Engn, 320 West Donggang Rd, Lanzhou 730000, Gansu, Peoples R China.
发表日期	2021
ISSN	1674-3822
起始页码	234
结束页码	255
卷号	13 期号:3
英文摘要	The thaw settlement of pipeline foundation soils in response to the operation of the first China-Russia Crude Oil Pipeline along the eastern flank of the northern Da Xing'anling Mountains in Northeast China was simulated in a physical model test (with a similitude ratio of 1/73) in a geotechnical centrifuge. Two pipes of a supported and an unsupported section were evaluated over a testing period for simulating 20 years of actual pipeline operation with seasonal cyclically changing oil and ambient temperatures. The results show that pipe settlement of the supported pipe was 45% of settlement of the unsupported pipe. Settlement for the unsupported section was approximately 35% of the thaw bulb depth below the initial pipe elevation, only 30% of that for the supported pipe due to the influence of the supports. The final thaw bulbs extended approximately 3.6 and 1.6 times of the pipe diameter below the unsupported and supported pipe bottom elevations, respectively. The sandbag supports kept frozen during the test period because of cooling effect of the thermosyphons. The maximum bending stress induced over the 20 m span length from bearing of the full cover over the pipe would be equivalent to 40% specified minimum yield strength (SMYS). Potential buckling of the pipe should be considered as the ground thaws. This study also offers important data for calibration and validation of numerical simulation models.
关键词	ROUTE SOILS MOHE
英文关键词	centrifuge test; oil pipeline; frost heave; thermosyphon; thaw settlement; permafrost engineering
语种	英语
WOS研究方向	Physical Geography
WOS类目	Geography, Physical
WOS记录号	WOS:000686565700005
来源期刊	SCIENCES IN COLD AND ARID REGIONS
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254540
作者单位	[Li, GuoYu; Ma, Wei] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources NIEER, State Key Lab Frozen Soil Engn SKLFSE, Lanzhou 730000, Gansu, Peoples R China; [Li, GuoYu] Chinese Acad Sci, NIEER, Xinganling Observat & Res Stn Frozen Ground Engn, Jiagedaqi 165000, Heilongjiang, Peoples R China; [Jing, HongYuan; Chen, PengChao] PipeChina North Pipeline Co, Langfang 065000, Hebei, Peoples R China; [Volkov, Nikolay] GEOINGSERV LLP, Fugro Grp, 29 Vernadskogo Ave, Moscow, Russia
推荐引用方式 GB/T 7714	Li, GuoYu,Jing, HongYuan,Volkov, Nikolay,et al. Centrifuge model test on performance of thermosyphon cooled sandbags stabilizing warm oil pipeline buried in permafrost[J]. 中国科学院西北生态环境资源研究院,2021,13(3).
APA	Li, GuoYu,Jing, HongYuan,Volkov, Nikolay,Ma, Wei,&Chen, PengChao.(2021).Centrifuge model test on performance of thermosyphon cooled sandbags stabilizing warm oil pipeline buried in permafrost.SCIENCES IN COLD AND ARID REGIONS,13(3).
MLA	Li, GuoYu,et al."Centrifuge model test on performance of thermosyphon cooled sandbags stabilizing warm oil pipeline buried in permafrost".SCIENCES IN COLD AND ARID REGIONS 13.3(2021).