变被动护弯为主动治理的一种新尝试

以汾河下游原家庄畸弯缺口的治理为例，采用全段围堰明渠导流等工程措施，完成了在过充的主槽弯道上筑新堤工程，按治导线实施了裁弯取直。提出了对平原冲积性河流畸形发展的弯道，仅靠控导护岩，因水流顶冲点不断变化，难以得到有效控制，必须把裁弯取直与疏浚清淤工程相结合，才能理顺河势，达到标本兼治。

A Trial of Changing Passive Protection Bend into Positive Control

In this paper, the contol of irregular bend in Yuanjiazhuang, downstream of Fenhe River is taken as an example, the authors pointed out that the irregular bend of river in alluvial plain can not be effectively controlled only by banks protection because the point where water flow collides with the bank changes incessantly of its position, and therefore hold that only by combining the cut-off works with the dredging works, can the river regime be straightened out, and thereby, to attain the dual goal of both the permanent control and the temporary control of the river.