Permafrost changes and engineering stability in Qinghai-Xizang Plateau  

作　　者：WU QingBai NIU FuJun 

机构地区：[1]State Key Laboratory of Frozen Soil Engineering,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences

出　　处：《Chinese Science Bulletin》2013年第10期1079-1094,共16页

基　　金：supported by the Outstanding Youth Foundation Program of the National Natural Science Foundation of China (40625004);the Global Change Research Program of China (2010CB951402);the State Key Program of the National Natural Science Foundation of China(41030741)

摘　　要：Climate change and engineering activities are the leading causes of permafrost temperature increase,active layer thickening,and ground-ice thaw,which trigger changes in the engineering stability of embankments.Based on the important research advances on permafrost changes and frozen soil engineering in Qinghai-Xizang Plateau,the changes in permafrost temperature and active layer thickness,their relationships with climate factors,the response process of engineering activities on permafrost,dynamic change of engineering stability of Qinghai-Xizang Railway,and the cooling mechanism and process of crushed-rock layers are discussed using the monitoring data of permafrost and embankment deformation.Finally,solutions to the key scientific problems of frozen soil engineering under climate change are proposed.Climate change and engineering activities are the leading causes of permafrost temperature increase, active layer thickening, and ground-ice thaw, which trigger changes in the engineering stability of embankments. Based on the important research advances on permafrost changes and frozen soil engineering in Qinghai-Xizang Plateau, the changes in permafrost temperature and active layer thickness, their relationships with climate factors, the response process of engineering activities on permafrost, dynamic change of engineering stability of Qinghai-Xizang Railway, and the cooling mechanism and process of crushed-rock layers are discussed using the monitoring data of permafrost and embankment deformation. Finally, solutions to the key scientific problems of frozen soil engineering under climate change are proposed.

关 键 词：高原多年冻土 工程稳定性 青藏高原 工程活动 气候变化 冻土工程 温度升高 冻土温度 

分 类 号：U213.14[交通运输工程—道路与铁道工程]