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《JOURNAL OF GLACIOLGY AND GEOCRYOLOGY》 1998-01
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Critical Height of the Embankment in the Permafrost Regions along the Qinghai-Kangding Highway

WU Zi-Wang1 ZHU Lin-Nan1 GUO Xin-Ming1 WANG Xiao-Yang2 FANG Jian-Hong2(1State Key Laboratory of Frozen Soil Engineering, LIGG, CAS, 730000; 2QinghaiInstitute of Highway Research and Survey, Xining 810000)  
The survey and drilling investigation in the permafrost regions along the Qinghai-Kangding Highway, which has been operated for 35 years, indicate that the line where the height of the embankment is lower than 08 m suffers from frost boiling and thermokast to different extent every year, and that the line where the height of embankment was over 08 m maintains a steady state. Based on an overall analysis on the change in permafrost table under the embankment, after considering the fact that the permafrost in the area is degrading and the requirement of the deformation of the road surface of high quality, it is suggested that the height of embankment is 16 m for the gravel road, and 20 m for cement concrete road in the plateau permafrost regions.
【Fund】: 国家自然科学基金
【CateGory Index】: P642.14
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