Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011,China;
College of Resource and Environment Sciences,Xinjiang University,Urumqi 830046,China;
Xinjiang Academy of Transportation Sciences,Urumqi 830000,China;
University of Chinese Academy of Sciences,Beijing 100049,China;
wind velocity field; wind-blown sand flux; W-beam central guardrails; sand deposition; desert expressway; wind tunnel test; Taklimakan Desert;