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、含沙量的提高而增大 The mechanism of sand abrasion is discussed, the factors affecting the abrasion are analyzed, the possibility of aeration and anti-abrasion is studied, and the formula for calculating the wear rate of concrete wall is deduced according to the test data. The rate decreases with the increase of aeration concentration and material strength, and increases with the flow velocity and sediment concentration