学术
中国-俄罗斯原油管道工程（漠河-大庆段）冻土工程地质考察与研究进展
李国玉[1] 金会军[1] 盛煜[1] 张建明[1] 俞祁浩[1] 齐吉琳[1] 温智[1] 吕兰芝[1] 童长江[1] 郭东信[1] 王绍令[1] 魏智[1] 杨思忠[1] 吉延俊[1] 于少鹏[1] 何瑞霞[1] 常晓丽[1] 郝加前[2] 陈友昌[2] 吴伟[2] 翟镇远[2] 赵意民[2]
[1]中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室,甘肃兰州730000 [2]中国石油天然气股份有限公司大庆油田工程有限公司,黑龙江大庆163712
摘 要:
在2005-2007年期间，先后3次对中国-俄罗斯原油管道漠河-大庆段沿线的冻土工程地质条件等进行科学考察，开展了冻土工程地质条件及其在气候变化和人类活动作用下的评价和预测研究．考察研究结果表明：管道沿线多年冻土在各类融区、季节冻土和水系等分隔作用下呈片状或岛状分布，沿线岛状、稀疏岛状及零星岛状占多年冻土区段的40％左右；管道沿线多年冻土随着气候的转暖和人类活动的影响不断退化．地形地貌单元、植被分布、地表水分条件的变化等局部因素对多年冻土的分布和地下冰的赋存产生重要的影响，管道沿线大约分布有50km左右的沼泽湿地，其表层为腐殖质土及泥炭层，泥炭层下面分布着含土冰层或地下冰，是管道沿线最差的冻土工程地质地段；由于中俄原油管道沿线水系发育多，冻胀丘、冰椎和冰幔等不良冻土现象广泛分布．科学考察的成果为管道沿线冻土工程地质条件评价和预测、管道的稳定性影响分析以及后期的长期检测系统设置等研究奠定坚实的基础，进一步为即将开工的中俄原油管道漠河-大庆段工程的设计、施工提供科学依据．[著者文摘]
文章出处:
《冰川冻土》-2008年30卷1期 -170-175页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1000-0240（2008）01-0170-06
Recent Advances in Frozen Ground Engineering Geology Survey along the China-Russia Crude Oil Pipeline Route （Mo＇he-Daqing Section）
LI Guo-yu, JIN Hui-jun, SHENG Yu, ZHANG Jian-ming, YU Qi-hao, QI Ji-lin WEN Zhi, LU Lan-zhi, TONG Chang-jiang, GUO Dong-xin WANG Shao-ling, WEI Zhi, YANG Si-zhong, JI Yan-jun, YU Shaopeng, HE Rui-xia, CHANG Xiao-li, HAO Jia-qian, CHEN You-chang, WU Wei, ZHAI Zhen-yuan, ZHAO Yi-min （State Key Laboratory of Frozen Soils Engineering, CAREERI, CAS, Lanzhou Gansu 730000, China; 2.PetroChina Daqing Oil field Engineering Co., Ltd., Daqing Heilongjiang 163712, China）
Abstract:
The scientific expedition group from the State Key Laboratory of Frozen Soils Engineering, Chinese Academy of Sciences, has conducted three surveys and investigations of the frozen ground engineering geology conditions along the China-Russia crude oil pipeline route. The research goals include better comprehension, assessment and forecasting of frozen ground engineering geology conditions at present and during the next 50-100 years under the combined impacts of climate change and human activities. The survey and investigation resuits indicate that patchy and sporadic permafrost, mosaicked by extensive presence of taliks or seasonally frozen ground and drainage patterns, accounts for 40% of the total permafrost area along the pipeline route. The permafrost along the pipeline route has been in rapid degradation due to the combined effects from dramatic climate warming and ever increasing human activities. The local factors such as topography, vegetations and soil moisture contents, have great influences on the distribution, ground temperatures, and ground ice contents of permafrost. About 50 km of wetlands have been identified along the China-Russia crude oil pipeline route. In these segments, the surficial deposits consist of peat and humic layers on the top of thick ground-ice, or ice-rich permafrost. The frozen ground engineering geology conditions in wetlands generally are the worst for building and operating the pipeline. The hazardous periglacial processes, such as the widespreadpresence of pingos, icings and frost mounds due to the extensive occurrence of the frost-susceptible soils and ample supplies of surface and ground waters in winter pose significant threats on pipeline operation. The survey and investigation, and subsequent assessment and forecast of frozen ground engineering geology conditions, thermal and stress analysis of pipeline foundation soils, and long-term monitoring system have provided and will provide the crucial technical support for design, construction, operation, and maintenance of the China-Russia crude oil pipeline project.[著者文摘]
Key words:
Permafrost; China-Russia crude oil pipeline; frozen ground engineering geology; climatechange; engineering explorations; surveys and investigation
基金资助:
中国科学院知识创新工程重要方向项目（KZCX2-YW-311）;中国科学院百人计划项目“气候变化条件下高温冻土区线性工程基础稳定性研究”;“多年冻土区路基变形和稳定性研究”;中国石油天然气集团公司技术开发项目“中俄原油管道漠河-大庆段工程冻土研究”资助
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