河道两旁的分洪区能够为河流分蓄超额洪水发挥重要作用，分洪区扒口分洪后口门的展宽和刷深过程的模拟对于抗洪工作具有较为重要的现实意义。

The flood detention areas play an important role in flood-preventing project of river, because it can divert and store the excessive flood from the river.

简要介绍铁路经过滞、分洪区这一特殊水文环境的选线特点、原则和方法。

A brief introduction is given to characteristics, principles, and method of route selection in flood detention and diversion area.

若出现超载水量，则从两方面调整各水库的泄洪策略(拦蓄与预泄)，以达到避免或减少分洪水量的目的。

If the water amount exceeds the limit, we can then adjust the discharging strategy by two ways (pre discharge or impound), to attain the aim of avoiding or decreasing diffluence water amount.

对哈尔滨上游蓄滞洪区的分洪能力以及可能发生的最大洪水进行了计算和分析，得出的结论认为哈尔滨市未来仍有发生溃堤的可能。

Analysis of flood release capacity of upstream detention areas and the probable maximum flood reveals that the risk of levee-breach in Harbin city still exists.