透水丁坝坝后回流区长度研究  

On the Length of Circulation Region of Seepage Spur Dike

作　　者：杨元平[1] 

机构地区：[1]浙江省水利河口研究院,浙江杭州310020

出　　处：《水运工程》2005年第2期18-21,共4页Port & Waterway Engineering

摘　　要：基于沿水深方向积分的平面二维水流运动方程组,在采用合理的假定条件下,推导出透水丁坝坝后回流区长度计算公式,研究结果表明,透水丁坝坝后回流区长度不仅与坝长、水深、糙率、面积缩窄比、河宽缩窄比等因素有关,而且与丁坝本身的渗流量有关。Based on 2-D averaged difference equations and under proper assumptions, the calculation formula for the length of the circulating length of seepage spur dike was derived. The research result proves that the length of circulating region of seepage spur dike is not only related to dike length, water depth, roughness, and area contraction ratio, but also to seepage flow of dike itself.

关 键 词：透水丁坝 渗流量 糙率 平面二维 水深 水流运动 区长 方向 因素 合理 

分 类 号：U617[交通运输工程—船舶及航道工程] F239.47[交通运输工程—船舶与海洋工程]