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	Development of freezing-thawing processes of foundation soils surrounding the China-Russia Crude Oil Pipeline in the permafrost areas under a warming climate
	Li, Guoyu; Sheng, Yu; Jin, Huijun; Ma, Wei; Qi, Jilin; Wen, Zhi; Zhang, Bo; Mu, Yanhu; Bi, Guiquan
刊名	COLD REGIONS SCIENCE AND TECHNOLOGY
	2010-12-01
卷号	64期号:3页码:226-234
关键词	Oil pipeline Permafrost Climate change Frost heave and thaw settlement Frozen and thawed cylinders
ISSN号	0165-232X
DOI	10.1016/j.coldregions.2009.08.006
通讯作者	Li, Guoyu()
英文摘要	The proposed China-Russia Crude Oil Pipeline (CRCOP) will be subjected to strong frost heave and thaw settlement of the surrounding soil as it traverses permafrost and seasonally frozen ground areas in Northeastern China The freezing-thawing processes the development of the maximum frozen cylinder in tanks and thawed cylinder in permafrost areas and the variations in the maximum freezing depths under the pipeline in tanks and thawing depths in different permafrost regions near Mo he station the first pumping station in China were studied in detail using numerical methods in this paper The inlet oil temperature at Mo he station was assumed to vary from 10 to -6 C in a sine wave form during the preliminary design phase Research results showed that the freezing-thawing processes of soils surrounding the buried pipeline had distinct differences from those in the undisturbed ground profile in permafrost areas In summer there was downward thawing from the ground surface and upward and downward thawing from the pipeline s surface once the temperature of the oil rose above 0 C In winter downward freezing began from the ground surface but upward and downward cooling of the cylinder around the pipeline didn t begin until the temperature of the oil dropped below 0 C However in the undisturbed ground profile downward thawing from the ground surface occurred in summer and downward freezing from the ground surface and upward freezing from the permafrost table occurred in winter The maximum thawing depths and thawed cylinder around the pipeline in warm permafrost enlarged with elapsing time and decreasing water content of the soils In tanks the maximum freezing depths and frozen cylinder around the pipeline kept shrinking with elapsing time and increasing water content of the soils The freezing-thawing processes and development of the thawed and frozen cylinders around the pipeline were muted by any insulation layer surrounding the pipeline Insulation had better thermal moderating on the heat exchange between the pipeline and the surrounding soils during the early operating period But its role slowly weakened after a long-term operating Research results will provide the basis for assessment and forecasting of engineering geological conditions analysis of mechanical stability of the pipeline foundation design and pipeline construction and maintenance (C) 2009 Elsevier B V All rights reserved
收录类别	SCI
WOS关键词	NORTHEASTERN CHINA ; EMBANKMENT ; MOUNTAINS ; RAILWAY ; REGIONS
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000285228600003
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2556363
专题	寒区旱区环境与工程研究所
通讯作者	Li, Guoyu
作者单位	Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Li, Guoyu,Sheng, Yu,Jin, Huijun,et al. Development of freezing-thawing processes of foundation soils surrounding the China-Russia Crude Oil Pipeline in the permafrost areas under a warming climate[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2010,64(3):226-234.
APA	Li, Guoyu.,Sheng, Yu.,Jin, Huijun.,Ma, Wei.,Qi, Jilin.,...&Bi, Guiquan.(2010).Development of freezing-thawing processes of foundation soils surrounding the China-Russia Crude Oil Pipeline in the permafrost areas under a warming climate.COLD REGIONS SCIENCE AND TECHNOLOGY,64(3),226-234.
MLA	Li, Guoyu,et al."Development of freezing-thawing processes of foundation soils surrounding the China-Russia Crude Oil Pipeline in the permafrost areas under a warming climate".COLD REGIONS SCIENCE AND TECHNOLOGY 64.3(2010):226-234.

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