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| Study of the Engineering Geological Problems in Permafrost Region along China-RussiaO ilPipeline and Prevention Countermeasures |
| WANG Jian-liang1, NIU Huai-jun2, YANG Yong-peng2, HAN Long-wu2 |
| 1.ChinaAcademy ofRailway Sciences, Beijing 100081, China; 2. NorthwestResearch Institute Co., Ltd. ofChina Railway EngineeringCorporation, Lanzhou, Gansu 730000, China |
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Abstract Research purposes: China -Russia oil pipeline crosses the permafrost region in Daxinganling of northeast China. The frost heaving and thawing settlement in permafrost region and active layerwould destroy the oil pipeline engineering, resulting in uneven deformation of the pipeline foundation and influencing the pipeline security. Thispaper analyzes and studies the engineering geologicalproblems in permafrostregion alongChina-Russia oilpipeline, and puts forward the prevention countermeasures forensuring the security and stability of the oil pipeline engineering.
Research conclusions:(1) Installation ofoverhead oilpipeline in permafrost region can extremely reduce the influence of unfavorable engineering geology on the security of the oilpipeline. (2) Themain reason for the pipelines' deformation damage and inducing disaster to the pipeline is the difference in freezing and thawing deformation in permafrost region.Therefore, reducing the absolute value of frostheave or thawing settlementdeformation to slow down the acute degree of the pipelines' differential deformation in the vertical direction is an effective way to overcome the deformation damage.(3) In the unfavorable geological areawith expansive sensitive soil and ice -rich frozen soi,l themeasures of insulating the pipeline, replacementof filling and thickening the pipewall can be taken foreliminating or reducing axially uneven deformation of the pipeline.
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Received: 10 September 2009
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[1] 大庆油田工程设计技术开发有限公司.中俄输油管道工程建设可行性研究报告[R ].大庆:大庆油田工程设计技术开发有限公司, 2007.
[2] 陈肖柏,等.土的冻结作用与地基[M ].北京:科学出版社, 2006.
[3] 铁道部第三勘测设计院.冻土工程[M ].北京:中国铁道出版社, 2002.
[4] 朱林楠,吴紫汪,臧恩穆.冻土退化与道路工程[C ] //第五届全国冰川冻土学大会论文集(上).兰州:甘肃文化出版社, 1966: 333 -340.
[5] 余绍水,等.青藏铁路沿线主要次生不良冻土现象的调查和机理分析[J].岩石力学与工程学报, 2005(6): 1082 -1085.
[6] 杨永鹏,等.清水河试验段冻土工程地质特征与评价[J].铁道工程学报, 2003(增刊): 19 -21.
[7] 金会军,等.多年冻土区输油管道工程中的(差异性)融沉和冻胀问题[J].冰川冻土, 2005(3): 454 -465.
[8] 原思成,等.青藏铁路冻土区环境问题对工程安全可靠性影响[J].工程地质学报, 2006(14): 433 -437.
[9] 盛煜,等.保温处理措施在多年冻土区道路工程中的应用[J].冰川冻土, 2002(5): 618 -622.
[10]潘伟东,等.青藏高原多年冻土地区不良冻土现象对铁路建设的影响[J].兰州大学学报, 2002(1): 127 -131.
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2009, Vol. 26 
