In recent years, over-extraction of groundwater has caused a series of environmental problems, including ground subsidence. How long will the current over-extraction go unaddressed?

Three in recent years, many city Chinese due to excessive extraction of groundwater, produce groundwater funnel, causing uneven settlement, affect the operation and construction of the tower crane.

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.