METHOD OF CREATING IMPERVIOUS SCREEN IN SOIL Russian patent published in 2016 - IPC E02B3/16 E02D3/12 

FIELD: construction.

SUBSTANCE: invention relates to hardening of soil by soil hardening substances, and can be used for protecting concrete foundations, base and body of road bed of rail and motor roads from ground and surface water. Method involves immersing into soil of tubular injector with outlets, and supply under pressure through channel of tubular injector of hardening solution providing soil structure destruction and formation of impervious screen in form of solid vertical wall. First immersion of tubular injector is carried out into previously drilled well to depth of water-proof layer. Outlets of tubular injector are made in two levels, distance between them from bottom closed end is equal to half of whole tubular injector length buried into soil. Outlets of tubular injector are made in form of located horizontally nozzle. Supply of hardening solution through channel of tubular injector is carried out at pressure of 200-300 atm during lifting tubular injector from extremely lower position in soil to level, when upper nozzle reaches up soil surface level. As injected solution polymer hardening solution is used, providing formation of primary phase compacted waterproof viscous mixture soil with injected solution with further transition in solid part of impervious screen phase. Further from initial step immersion of tubular injector is performed in viscous mixture of ground with polymer hardening solution in extreme zone of developed screen.

EFFECT: technical result consists in improvement of reliability of protecting concrete foundations, base and body of road bed of rail and motor roads against exposure to ground waters and higher labor efficiency.

1 cl, 2 dwg