METHOD TO PROTECT SUNK BUILDINGS AND STRUCTURES AGAINST RETAINING FLOOD WITH GROUNDWATER AND DEVICE FOR ITS REALISATION Russian patent published in 2013 - IPC E02D31/02 

FIELD: construction.

SUBSTANCE: method to protect sunk buildings and structures against retaining flooding with groundwater consists in the fact that a distribution-filtration sand cushion is formed under the entire structure. It is equipped with an injection-washing system, with the help of which the cushion body is cleaned from clayey particles of natural mudding by groundwater washing having underwashing speed of filtration, which is developed by injection of compressed air under a foot of the underground part of the structure.

EFFECT: provision of preservation of protective properties of a distribution-filtration sand cushion against retaining flooding of an underground part of buildings and structures for the entire period of their operation, provision of preservation of natural hydrological conditions of a development area.

2 cl, 3 dwg