摘要
在水槽试验的丛础上,对不同梢底(壁)糙率、不同水流压缩比与各级流量、水深条件下的非淹没丁坝动水压力进行了研究。论述了坝体周围动水压力分布的若干基本材性。应用Karmao平面绕流旋涡阻力理论,导出丁坝动水压力理论表达式(8),并根据试验资料,求得反映丁坝动水压力基本规律的实用计算式(15)、(16)。
In this paper, dynamical head pressures formed near spur dike of non-overflow type in terms of different tank roughness, different flow constriction proportion on various discharges and depths are studied. Several basic characteristics on pressure head distribution at the surface of spur dike are described. On basis of Karman's deflected flow theory behind a plane plate, theoretical expression (8) on dynamical head pressure formed near spur dike is deduced. According to test data, practical calculation formulas (15), (16) applicable to spur dike are presented.
