干旱区生态环境知识资源中心(Arid): 青藏高原北麓河地区原状多年冻土导热系数的试验研究

Arid

	青藏高原北麓河地区原状多年冻土导热系数的试验研究
其他题名	Experimental Studies of Thermal Conductivity of Undisturbed Permafrost at Beiluhe Testing Site on the Tibetan Plateau
	温智; 盛煜; 马巍; 邓友生; 吴基春
来源期刊	冰川冻土
ISSN	1000-0240
出版年	2005
卷号	27 期号:2 页码:182-187
中文摘要	取自青藏高原北麓河试验段的原状冻土, 利用QL-30热物性分析仪测定原状冻土的导热系数. 结果表明: 原状冻土和重塑土的导热系数变化规律存在着较大差别. 对于浅部冻土层, 气体体积含量和含冰量是影响原状冻土导热系数的控制因素; 而对于地下冰层, 冰是控制其导热系数的最重要因素, 气体体积含量的大小也对其导热系数有影响. 对于深部强-全风化泥岩, 气体体积含量控制着它的导热系数的大小.
英文摘要	Thermal conductivity is an important pa-rameter for estimating thermal regime of perma-frost in engineering design. Using QL-30 thermo-physical instrument made in Anter Corporation in State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engi-neering Research Institute, Chinese Academy of Sciences, thermal conductivity of undisturbed per-mafrost taken from Beiluhe site were studied. Ex-perimental studies show that there are distinct difference in thermal conductivity between undis-turbed permafrost and frozen soil. Ice content by volume controls the thermal conductivity of shal-low permafrost. For the shallow permafrost with same soil texture, same structure and consolidation condition, it is found that its thermal conductivity has negative correlativity with gas content by vol-ume and positive correlativity with volume density, respectively. On the other hand, gas content by volume is a dominant factor that affects the ther-mal conductivity of deep permafrost and ground ice. Besides, ground ice in the Tibetan Plateau has the thermal conductivity equivalent to that of pure ice, and gas content by volume affects its thermal conductivity. The studies of thermal conductivity of undisturbed permafrost on the Tibetan Plateau will be helpful to the thermal calculation in the permafrost regions of the plateau.
中文关键词	多年冻土 ; 北麓河 ; 青藏高原 ; 导热系数
英文关键词	permafrost Beiluhe Tibetan Plateau thermal conductivity
语种	中文
国家	中国
收录类别	CSCD
WOS类目	CONSTRUCTION BUILDING TECHNOLOGY
WOS研究方向	Construction & Building Technology
CSCD记录号	CSCD:1916816
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/205916
作者单位	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, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	温智,盛煜,马巍,等. 青藏高原北麓河地区原状多年冻土导热系数的试验研究[J]. 中国科学院西北生态环境资源研究院,2005,27(2):182-187.
APA	温智,盛煜,马巍,邓友生,&吴基春.(2005).青藏高原北麓河地区原状多年冻土导热系数的试验研究.冰川冻土,27(2),182-187.
MLA	温智,et al."青藏高原北麓河地区原状多年冻土导热系数的试验研究".冰川冻土 27.2(2005):182-187.