黑龙江上游洛古河至黑河镇段长905公里,自1916年有水文记载以来,出现过十八欢严重冰坝.仅1958年以来,冰坝造成严重灾害就有三次.冰坝形成时,造成河道堵塞,拦蓄水流,河水出槽,冰排上岸,最大壅水高度几乎相当于历史上特大洪水水位,对沿江人民生命财产是一个严重威胁,往往造成数万亩农田及数百座房屋被淹,形成严 The upper reaches of Heilongjiang Province, the ancient river to Heihe Town paragraph 905 kilometers long, since hydrological records in 1916, there have been eighteen Huan severe ice dam. Since 1958, ice dams caused serious disaster there are three times when the ice dam is formed, resulting in the river Blocking the water flow, the river out of trough, ash row ashore, the maximum water height is almost equivalent to the history of the flood level, the lives and property of people along the river is a serious threat, often resulting in tens of thousands of acres of farmland and hundreds of houses flooded, Strictly formed