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1 防洪效益的概念与特点洪水灾害泛指洪水造成的各种灾害,主要是河流洪水泛滥、淹没广大平原、山区山洪暴发冲毁和淹没土地、山洪引起的泥石流破坏房屋、村庄和压田毁地等。防洪就是设法防止或尽量缩小洪水灾害,利用一定的工程措施、非工程措施或其它综合治理措施,达到防止或减轻洪灾的目的。防洪效益通常是指有防洪项目与无防洪项目相比时,可减免的洪灾损失和可增加的土地开发利用价值。洪灾损失通常包
1 Concept and Characteristics of Flood Control Benefit Flood Disaster refers to all kinds of disasters caused by floods, mainly caused by flooding of rivers and overwhelming of vast plains. Floods caused by mountain torrents erupt and submerge land. Debris flow caused by flash floods destroy homes, villages and fields. Wait. Flood control is to try to prevent or minimize flood disasters, the use of certain engineering measures, non-engineering measures or other comprehensive management measures to achieve the purpose of preventing or reducing floods. Flood control benefits usually refer to flood losses that can be reduced or avoided and the value of land development and utilization that can be increased when flood control projects are compared with non-flood prevention projects. Flood damage usually package