METHOD OF SOIL REINFORCEMENT Russian patent published in 2012 - IPC E02D3/12 

FIELD: construction.

SUBSTANCE: method of soil reinforcement includes drilling of wells, installation of injectors having a perforated part, injection of an injection cement mortar into soil via injectors under a cantledge with provision of its hydraulic rupture at the pressure of 5-20 atm. Besides, injectors after soil reinforcement are not withdrawn from it. In one well three injectors are installed as different in height designed for cementing various layers of soil that differ in depth, besides, as three injectors are installed into the well, it is carried out so that the perforated part of every subsequent injector is located below the perforated part of the previous one, without its closure. The following is added into a cement mortar made of cement and water: either bentonite clay or liquid glass, or bentonite clay and liquid glass, or cement dust and liquid glass, or cement dust, bentonite clay and liquid glass, or cement dust, sand of fine fraction and liquid glass.

EFFECT: increased efficiency and reduced material intensity of works aimed at soil reinforcement.

12 cl, 3 tbl