摘要
通过不同结构的尼龙网和塑料网对风沙流减弱作用的风洞实验研究,旨在为探求各种防沙新材料的防护功能,并为防沙新材料的开发、野外工程防沙的优化设计及其应用提供理论依据。笔者在前人研究的基础上,以平均净阻沙率、网后平均输沙率和风沙流动态变化趋势为参考指标,初步证实了尼龙网和塑料网与常规的防沙材料,在防沙功能上具有同等的作用,且当孔隙度β在40%左右时防护效益最佳。
Through simulations on abated effect of nylon and plastic nets with different structure on wind-blown sand in wind tunnel, the aim of this paper is to provide a theoretic base for optimized design of blown sand engineering in the field and a new sand-defending material application. According to mean sand transporting rate, mean net sand blocking rate and dynamic changing trend of wind-sand stream behind net, the fence of porosity β=40% was found to have a good shelter effect for abating wind-blown sand particles. Therefore, it confirmed that nylon and plastic nets have the same defending function, compared with other routine sand-defending materials.
出处
《中国沙漠》
CSCD
北大核心
2005年第4期483-487,共5页
Journal of Desert Research
基金
中国科学院知识创新工程重要方向项目(KZCX3SW341)
所知识创新项目(2004105)共同资助
