关键词: 沙土含水率, 起沙临界风速

Abstract: Bagnold developed the formula of thresholdwind velocity by neglecting the action of cohesive force. This usually caused a large errors since there exists big difference from its real conditions. This paper develops a relation of the threshold wind velocity to grain diameter and sand moisture volume percentage on the basis of the momentary balance of force of gravity, cohesion and drag force, and analyzes quantitatively the effects of sand moisture volume percentage on the threshold wind velocity.

Key words: Sand moisture volume percentage, Threshold wind velocity, Quantitative analysis