Title Estimates on thermal effects of the China-Russia crude oil pipeline in permafrost regions
Author Zhang Jianming; Qu Guangzhou; Jin Huijun
Author Affil Zhang Jianming, Chinese Academy of Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Lanzhou, China
Source China-Russia crude oil pipeline in permafrost regions in northeastern China, edited by Jin Huijun, G. Gay and M.C. Brewer. Cold Regions Science and Technology, 64(3), p.243-247, . Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0165-232X
Publication Date Dec. 2010
Notes In English. Based on Publisher- supplied data GeoRef Acc. No: 309510
Index Terms climate; climatic change; embankments; foundations; frost heave; gravel; permafrost; pipelines; sediments; settlement (structural); thawing; China; Asia; berms; burial; buried features; China-Russia oil pipeline; clastic sediments; climate change; Far East; finite element analysis; frost heaving; ground-surface temperature; insulation; numerical analysis; settlement; thermal effects
Abstract Using the finite element method, thermal effects of the Chinese-Russian crude oil pipeline in permafrost regions were estimated under two construction modes (conventional burial and aboveground embankment), two thermal control techniques (bare and insulated pipe), and three climate conditions along the route (marked under the natural mean ground surface temperatures of - 0.5, -1.0, -1.5C, respectively). The results show that with the silt embankment on gravel berm and the insulated pipe, the thaw of permafrost under the pipeline could be prevented during its service life. However, thawing of the permafrost under the conventionally buried pipeline cannot be prevented regardless of climate conditions or thermal insulation around the pipe. So it is strongly recommended that over-excavation and/or thermosyphons be applied for the conventional burial construction mode, especially in the warm and ice-rich permafrost sections to mitigate frost heave and thaw settlement in the subsoil.
URL http://hdl.handle.net/10.1016/j.coldregions.2009.10.001
Publication Type journal article
Record ID 65006597