设计制作了能够有效避免沙槽下风端沙粒塌陷的蠕移沙粒集沙仪,并分析了该集沙仪中集沙槽的高度和厚度对单宽蠕移输沙率实验测量结果的影响,给出了集沙槽的合理高度和厚度;利用该集沙仪在风洞中测量了不同风速下的单宽蠕移输沙率,外推给出了沙粒的流体起动风速。 The creeping sand sediment analyzer which can effectively avoid sand collapse at the windward side of the sand tank is designed and manufactured. The effect of the height and thickness of the sand tank in the sediment collector on the experimental results of single-width creep sediment transport rate , The reasonable height and thickness of the sand-collecting trough are given. The creep sediment transport rate of single-width at different wind speeds is measured in the wind tunnel using the sand-gage, and the wind speed of the fluid is obtained by extrapolation.