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设有行洪区的河道,规划运用和管理涉及水利技术和社会经济两方面的问题,本文主要阐述前一方面的问题。我国一些大江大河往往利用河道主槽、滩地以外的大片行洪区分泄洪水,分泄流量的比重也比较大,行洪区必须适时通畅行洪才能保障防洪安全。我国的行洪区人口较多,情况较复杂,很多方面不同于国外所谓洪泛平原,没有很多类似经验可借鉴。对行洪区问题的研究,从理论上和实践上都有重要意义。例如淮河中游,从正阳关到浮山河段就有行洪区十余处,常遇洪水时部分行洪区行洪,大洪水时全部行洪。两岸临河行洪堤之间距离一般四百至八百米,行洪区行洪后,行
There are floodplain river courses, planning and application and management of water conservancy technology and socio-economic issues, this article focuses on the previous one. Some major rivers in our country often use the main channel of the river channel. Large flood areas outside floodplains divert floodwater, and the proportion of discharged flows is also relatively large. The flood-discharging areas must be flooded smoothly in time to ensure flood control safety. The flood-stricken areas in our country have a large population and complicated conditions. In many aspects, flood diversion areas are different from the so-called flood plains in foreign countries and there is not much similar experience to learn from. The research on the problem of floodplain is of great significance both theoretically and practically. For example, the middle reaches of the Huaihe River, from Zhengyangguan to Fushan reach there are more than ten floodplain, flooding flood often flood, flooding flood flood. The distance between Linhe River embankments on both banks is generally 400 to 800 meters