Around the pumping Wells and within the limit of a funnel-shaped ground water surface, not only vertical movement, but also horizontal compression and dilatation can be observed.
In the urban pumping stations, owing to the terrain or the limit of land use, the side-direction for bay is often adopted.
在城市排水泵站中，由于受地形、用地的限制，常采用布置紧凑的侧向进水前池。
3
The upper limit of the gain is determined by the threshold of the SBS of the system. The maximum gain can be raised in the case of double-pass pumping.