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| Research on the Different Characteristics of Sand - drift between Gobi and Plateau |
| LI Kai - chong，XUE Chun - xiao, JIANG Fu - qiang,LIU He - ye |
| Northwest Research Institute Co. Ltd of CREC , Lanzhou, Gansu 730000, China |
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Abstract Research purposes ： Through the research and analysis of field test and laboratory test data of Qinghai - Tibet Plateau and the Xinjiang Gobi area, the characteristics and the main manifestation of sand - drift between them are discussed, which will provide some fundamental data and theoretical basis for the design and the construction of sand disaster protection engineering in these area.
Research conclusions ： (I) The result of sand particle size analysis shows that the mostly segment is less than 0. 25 mm in sand drift movement. (2) The different characteristics of sand — drift have been discovered between Xinjiang Gobi and Qinghai — Tibet Plateau. The wind speed causing erosion is about 11.0 ~ 20. 0 m/s in Xinjiang Gobi area, which is much larger than 7.0 m/s in the Qinghai — Tibet Plateau. (3) The laws of wind carrying sediment changes with height are described by power function，and the wind carrying sediment is decreased with height increasing. (4) Sand transport capacity attains to almost 90% of total capacity within 0. 5 meters in Qinghai - Tibet Plateau, but it is only 76% in Xinjiang Gobi area. (5) The research results can provide some references for the design and the construction of sand disaster protection engineering in the similar surroundings.
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Received: 30 August 2013
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2014, Vol. 31 
