The life and World !

If the soil is too much ground water pumped out, you can change the structure and pressure conditions, and the loose soil to move, start to fall.

excessive use of groundwater in the last 30-40 years, taking place in rapid population growth, industrialization and those associated with fever caused by construction. In Shanghai since 1970 trying to stop the descent. No wonder, as the metropolis of today, only three meters away from the sea level over a hundred years ago was 5 meters higher.

Subsidence of the fifty cities are visible signs of multi-storey houses, buildings, and tottering to become uninhabitable, cracks appear on the pavements and roads.