起沙风统计和工程输沙量计算中的若干问题

Some problems on statistical data ofblown sand winds and calculation for volume of sand transport

以起沙风两种统计量 (Thour与 T10 min)和平均风速的计算以及输沙量的统计计算为例 ,指出在风沙活动的研究中 ,采用 Thour统计量计算出的各种结果会带来一定的偏差 ,这种偏差在风向比较单一的地区更为明显。因此 ,在实际应用中 ,应进行大量的相关分析并对 Thour统计量加以订正 ,使其与实际更为相符合。

Taking two series of the statistical data of the blown sand winds (T 10min and T hour ) as the case study, the results show the different statistical data of the blown sand winds will result in the deviation for the analysis of the blown sands. the data of T hour for the calculation of the sand transport will result in the great error for the regional analysis of the blown sand activities. Those errors are more evident in the regions of single directional wind. So, the relative analyses for the statistical data of the times are necessary, which make it nearer the actual wind regimes.