【摘要】 运用沉积物的粒度分析方法，研究了塔里木沙漠石油公路半隐蔽式沙障区内外沙物质的粒度特征。指出了设置沙障后随时间的推移，障内沙物质平均粒径的Φ值将增大，分选程度变差，而偏度和峰态变化则不十分显著；累积概率曲线表现为四─六段式，含两组悬移组份；掩埋沙障的主要沙物质是跃移组份。此外，还分析了粒度分布与风沙运动的关系，为设置和维护机械沙障提供了粒度方面的依据。更多还原

【Abstract】 This paper, through the characteristic analysis of sediment grain size, discussed the grainsize parameters of sands in semi-covered sand barrier and shifting sand areas along the oil-transportinghighway in Tarim Desert, and pointed out that with time went by, the mean diamter of sand in barrierarea will become finer, but sorted badly, the changes of skewness and kurtosis are not evident. Thecumulative probability curve exhibitS 4￣ 6 sections, including two suspension components; saltationcomponents constitute the main sand materials that cover the barriers ; Also were discussed the grainsize composition and the movement of blown sand, thus laying a basis of grain-size parameters forbuilding and repairing sand barriers.更多还原