非淹没丁坝坝头冲刷深度的计算  

Study on scouring depth around non-submerged spur dike

作　　者：詹义正[1] 潘军峰[2] 曹志芳[1] 崔承章[1] 

机构地区：[1]武汉大学水利水电学院,湖北武汉430072 [2]山西省水利厅,山西太原030002

出　　处：《武汉大学学报（工学版）》2002年第4期27-30,共4页Engineering Journal of Wuhan University

摘　　要：基于丁坝坝头水流结构 ,提出了坝头绕流挤压流动模式 ;由此根据有效局部水流连续原理 ,建立了丁坝坝头冲刷深度计算公式 ,该式涉及因素较全面 ,公式建立过程中所使用的数学模式清晰 ,物理意义明确 .经野外及室内资料验证表明 ,计算与实测结果较为吻合 。Based on the flow structure of the spur dike head, the mode of flow of pressing circumfluence is proposed. According to the principle of continuity of efficient local flow and fully considering the influencing factors, a formula of scouring depth around spur dike is built; this formula has an explicit mathematical mode and physical conception. And through the comparisons between the resutts with this formula and the field and experimental data, it shows this formula has good adaptability and practicability.

关 键 词：坝头 冲刷深度 计算 非淹没丁坝 局部冲刷 坝头绕流 起动流速 

分 类 号：TV863[水利工程—水利水电工程]