| The road in pastoral area is a special kind of highway, which is ready to suffer from snow hazard and sand hazard. Based on the analysis of the speed of wind blowing across the embankment, cutting and part cut-part fill subgrade with FEM, the speed field of blown sand and blown snow was simulated, then a reasonable side slope and height of subgrade is proposed. This thesis also analyzed the wind speed field before and behind the sand protection facilities and snow protection facilities, and then the reasonable position and height of the protection facilities were proposed. Finally, with a great deal of investigation, the typical cross sections for pastoral roads and reasonable slope protection are presented. |