Breaking a dike means that water overflows the top of the dike, gradually taking away the soil built by the dike, and then the dike body becomes thin and soft, which can't stop the upstream water. A dike breach is called a dike breach (this is a natural factor). There is also the artificial breach of the dike, which is to protect most interests and sacrifice local interests. When the flood comes, the dike will be dug as needed to let the flood enter the predetermined flood storage and detention area.
River breach refers to the phenomenon that the water level in the basin rises sharply due to heavy rain, snowmelt, icing, storm surge and other reasons. After the water overflows the top of the dam, it gradually takes away the earth that built the dam, and then the dam becomes thinner and softer, which can't stop the upstream water, causing the river to wash away the dam. This phenomenon usually occurs in important rivers such as the Yangtze River and the Yellow River.
catastrophe
Because these rivers have large basins and relatively high water levels, once an accident occurs, it will cause great disasters. When the river bank breaks, water will gush out from the gap and spread outward continuously, and the velocity of water will also increase rapidly. At the same time, imagine the damage caused by floods after the levees of these huge rivers such as the Yangtze River and the Yellow River burst.
Once the riverbank breaks, it will directly threaten the life safety of coastal residents. In addition, because the flood will spread to a wide area and pose a potential threat to the surrounding buildings, roads and other building facilities, it will leave a lot of economic losses and population losses after the flood. In order to avoid the phenomenon of bank break, it is necessary to strengthen the maintenance and management of river banks.