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串沟、堤河也被称为暗险,亦称岔流。洪水漫滩时,串沟在河滩上与河並行泄洪。历史上辽河许多变迁、改道都是由岔流演变为主流而颓岸出险。因此,有计划地把串沟、堤河淤平,不仅能使滩面横比降有所减缓,而且大水漫滩后,可以避免夺流改河的危险产生,起到塞支强干的作用。所以,总结1985、1986年洪水带来的险情教训,有计划地采取淤平串沟和堤河已成为辽河整治1987年的当务之急。近年来辽河干流淤积日益严重,河床逐年抬高,过水面积逐趋缩小。据台安境内六间房至朱家坊1962年和1979年套绘断面比较,
Chuangou, embankment river is also known as the dark danger, also known as fork stream. Flood floodplain, tandem ditch in floodplain and river parallel flood. Liaohe history of many changes, diverting from the mainstream to the mainstream and the out of bankrupt. Therefore, it is not only possible to slow down the cross-section of dikes and dikes in a planned way, but also to avoid the danger of losing water and changing rivers when floodwaters flood, effect. Therefore, summarizing the dangerous situations brought by the floods in 1985 and 1986 and adopting the plan of ditching flat dikes and dike rivers in a planned way have become urgent tasks for Liaohe River renovation in 1987. In recent years, the deposition of the Liaohe River is becoming more and more serious. The riverbed is gradually increasing year by year. The water area has been gradually reduced. According to the Tai’an territory of six rooms to Zhujiafang 1962 and 1979 sets of painted sections,