行洪区在淮河中游地区的防洪作用及其安全建设与合理运用问题,多年来认识上是不统一的。今年大水之后,这一问题成了讨论与反思的焦点。笔者就行洪区的规划与建设谈谈自已的观点。现有一些行洪区,不论是理论分析,还是实地观察,均起不到多少行洪作用;尤其是行洪时不按规定的位置开口门、开口门宽度不足、先后顺序不正确等因素影响,而使得行洪区仅起到蓄滞洪水作用。在以前的治淮规划和正在实施的规划方案中,均是以打开淮河中游行洪通道为重点,分别实施了唐垛湖、姜家湖、董风湖行洪堤退建,规划将正阳关以上至王截流河段整治成宽1.5至2公里的排洪通道,这都是抬标之举。笔者认为,应本着扩大河道排洪能力,使洪水畅泄入江的原则,采 Flood control area in the middle reaches of the Huaihe River flood control and its security construction and the rational use of the problem, over the years of understanding is not uniform. After the flood this year, this issue has become the focus of discussion and reflection. I talk about the planning and construction of Hongxing district own point of view. Some existing floodplain areas, both theoretical analysis and field observation, are less than enough for floodflooding. In particular, they are not affected by factors such as not opening the door in the prescribed position during flood season, insufficient opening width, and the order of the openings , Leaving the flood zone only played a role in flood storage. In the previous planning and implementation of Huaihuai planning and implementation of the program are based on the opening of the Huaihe River flood channel as the focus, respectively, the implementation of the Tan Duo Lake, Jiang Lake, Dongfeng Lake embankment line construction, the planning will Zhengyangguan above the king Intercepted river section rectification into 1.5 to 2 km of flood discharge channel, which are lifting the move. I believe that should be based on the principle of expanding flood discharge capacity of the river to flood into the river flood