COMPOSITION FOR SOIL CONDITIONING AND SOIL CONDITIONING METHOD Russian patent published in 2016 - IPC E02D3/12 C09K8/04 

FIELD: mining.

SUBSTANCE: group of inventions relates to conditioning of soil during operation of tunnel boring mechanized complexes TBMC in working face, consolidation and stabilization of quicksand water-saturated soils. Composition for soil conditioning includes solution of structure-forming agent in an amount of 40-80 wt% by dry substance, which is colloidal silica, activator solution in amount of 20-60 wt%, which is mixture of calcium hydroxide, sodium hydroxide and sodium fluorosilicate or sodium sulphate in ratio of 40-60, 10-30 and 10-30 wt%, respectively. Invention discloses alternative versions of above composition with list of different types of structuring agents and activators. In method of soil conditioning components of above composition are introduced into soil by injection impregnation, or injection at high pressure by hydraulic fracturing, or injection at ultrahigh pressures and intensification of soil layers mixing under pressure. Method is developed in subclaims.

EFFECT: providing drilling in flooded soils (quicksands) of high degree of fluidity with taking of drilled out soil with TBMC augers, consolidation and stabilization of quicksand soils.

5 cl, 28 tbl, 12 ex