关键词: 最大可能输沙量, 工程计算, 动力风玫瑰

Abstract: The sand-transporting quantity is an important physical value and useful engineering parameter.It is a complex vector which have obvious heterogeneity of the distribution in space and a variability with time.The maximum possible sand-transporting is defined as theoretical limiting value of sand-transporting quantity in the paper.We have calculated the summation of maximum possible sand-transporting quantity in a selected region in a year in different wind directions(16 directions) on the basis of the automatic record wind and the experimental formula of maximum possible sand-transporting quantity.The maximum possible resultant sand-transporting quantity and resultant sand-transporting direction are also calculated with the principle of vector resultant.The results show that the maximum possible resultant sand-transporting quantity and direction are consistent with the average moving speed and direction of main sand dunes.

Key words: Maximum possible sand-transporting quantity, Engineering calculation Dynamic wind rose