摘要
探讨了沙粒磨损机理 ,分析了影响磨蚀的因素 ,研究了掺气抗磨的可能性 ,根据试验数据导出了混凝土材料壁面磨损率的计算公式 .研究表明 ,含沙水流对固壁材料的磨蚀率随掺气浓度、材料强度的增大而减小 ,随水流流速。
The surface material is liable to abrasion by high velocity sediment laden flow.In this paper,the mechanism of sand abrasion is discussed and some effects of significant flow factors on material wear are analyzed;the possibility of preventing abrasion with aeration is proposed.Based on test data,a formula for calculating the concrete material wall surface wear rate is derived.It is indicated that the wear rate is related to air concentration,strength of material,flow velocity and sediment concentration.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
2000年第2期27-31,共5页
Journal of Hohai University(Natural Sciences)
基金
国家自然科学基金资助项目 !(59279381)
关键词
含沙水流
掺气
磨损
气蚀
sediment laden flow
aeration
wear
cavitation
