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一、洪水损失与火灾、地震等其他自然灾害相比,洪水灾害发生比较频繁,危及面集中,直接威胁人民的生命和财产,造成重大的损失,洪水灾害大致可分三种:(1)河水漫堤、河流阻塞、海潮顶托等引起的洪水泛滥;(2)洪水引起的河岸冲刷侵蚀;(3)决口、河道摆动等引起的河流改道。据分析,在各种灾害成因中、河流的洪水泛滥是最主要的一种。洪灾损失通常是指洪水及所夹带的沙、石所造成的生命财产的毁灭的损伤。根据影响的性质,洪灾损失分为直接损失和间接损失,直接损失指城市和农村中财产、设备、牲畜、庄稼所直接蒙受的经济损失,间接损
First, flood losses Compared with other natural disasters such as fires, earthquakes and other natural disasters, flood disasters occur frequently and endanger the surface concentration, directly threaten people’s lives and property, causing heavy losses. There are three types of flood disasters: (1) river water Flooding caused by overcrowding, river obstruction, seawall top support, etc .; (2) river erosion erosion caused by flood; (3) river diversion caused by breach of mouth, river swinging and the like. According to analysis, flooding of rivers is the most important one among various causes of disasters. Flood damage usually refers to floods and entrapment of sand and stone damage caused by the destruction of life and property. According to the nature of the impact, flood losses are divided into direct and indirect losses. Direct losses refer to the direct economic loss of property, equipment, livestock, and crops in cities and rural areas, indirect damage