METHOD FOR REINFORCEMENT OF SATURATED SOILS Russian patent published in 2010 - IPC E02D3/12 

FIELD: construction.

SUBSTANCE: method includes formation of well, arrangement of longitudinal stress concentrator on its wall, locking of well upper part with isolation of injection zone and introduction of reinforcing mortar under pressure with formation of fracture plane, drilling of well and arrangement of longitudinal stress concentrator within the limits of injection zone are carried out under pressure of reinforcement mortar with density that eliminates dulling of well wall and providing for stability and shape of stress concentrator. Threading of concentrator is done in well filled with above mentioned mortar, by means of longitudinal reciprocal motion of device comprising pipe, tip and rotating cutter. Tip is arranged with circular aligning element fixed with the help of ribs on central rod and having side slot for extension of cutter, free cavities for passage of reinforcement mortar as device reciprocally moves in well.

EFFECT: elimination of well wall dulling and provision of possibility for threading of stress concentrator, and technical result is reduction of cost, power intensity and improved quality of works.

1 cl, 5 dwg