丁坝断面流量重分配的试验研究

An Experimental Study on the Discharge Distribution around a Spur Dike Section

各种型式的丁坝，在航道整治工程中，被广泛应用．其作用主要有束水、分流、挑流、护岸及改善航行水流条件．丁坝它能调节坝周泥沙的冲淤变化，刷深航槽，稳固河岸．本文通过对在非淹没条件下，正挑丁坝孔口断面的流速分布，及丁坝阻水流量的再分配进行了分析研究．该项试验研究成果在航道整治工程设计中，有较大意义和广泛的应用价值．

Spur dikes are ofton used in the hydraulis and waterway engineering. Based on a special model teston the velocity and obstructed-discharge distribution change in a non-submorged,orthogonal spur dike,the peper discusses the flow characters around the spue dike are alike to those in blending section. Theresult shows useful to elect an optimum waterway regulation line.