溢流井是排水检查井的一种，一般存在于截流式合流制排水系统和城市排水工程泵站系统中，具有控制过水流量的功能。
所以常常容易因为溢流井与逃气道位置设计不当，使得铸件产生气孔的缺陷。
So often easily design overflow and air vent at inappropriate location, making casting generated gas hole.
溢流井是城市截流式合流制排水系统的一个重要组成部分，它的成败直接影响着规划设计意图的实现。
In urban sewer design, the accomplishment of design intention is effected directly by the function of overflowing well, an important structure for combined sewer system with collector.
溢流关井的水击压力关系到能否关井，以及关井方式的选择。
The surge pressure of overflow well shut-in impacts whether well can be shut down and the choice of well shut-in modes.
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