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河道渠化工程利用拦河坝或活动坝抬高水位,淹没滩险,造成回水以利于通航,在综合利用情况下,还可以收到防洪、发电、灌溉,以及给水、水产养殖等多方面效益。但由于渠化工程缩小了河床泄流断面,洪水期产生壅水,使沿河滩地农田、房屋受损。因此如何确定和减少渠化工程中的淹没损失,是水利水文工作中的重要课题。本文从调查研究着手,提出一些意见,供讨论。
River canalization projects use barrage or active dam to raise water level, inundating beach insurance, resulting in backwater for navigation, and in the case of comprehensive utilization, flood control, power generation, irrigation, water supply and aquaculture can also be received. However, due to the canalization project has reduced the discharge section of the riverbed, the floodwaters generated sluice, so that farmland along the floodplain, houses damaged. Therefore, how to identify and reduce the flood damage in canalization project is an important issue in water conservancy and hydrology. This article starts with the investigation and research and puts forward some suggestions for discussion.