METHOD FOR IMPROVING MASSIVE OF LOESSIAL COLLAPSIBLE SOIL IN BASE OF BUILDINGS AND STRUCTURES Russian patent published in 2008 - IPC E02D3/12 

FIELD: construction.

SUBSTANCE: invention is attributed to construction, namely to loessial collapsible soils, by injecting therein solutions using driving injectors. Method for improving massive of loessial collapsible soil in buildings and structures base includes soil surface compaction; erection on it distributing bearing element over area of base connected in a successive order with reinforcing fabric installation and cementation of reinforced concrete slab; creation using boring head and in staggered order rows of wells at regular intervals within contour of bearing element with locating one of them outside the border; insertion into soil through embedded into wells injectors of improving solution in the form of pulp, under pressure of ground hydraulic fracturing and subsequent charging of soil with hardening material in the form of cement-sand solution with forming strengthened zones in massive depth. During erection of distributing bearing element on base area, before cementation of reinforced concrete slab filling pipes are attached to reinforcing fabric. After erection of distributing bearing element through these pipes wells are created. Filling pipes are placed at intervals divisible by interval of reinforcement fabric rods and equal to interval of wells positioning. Through injectors embedded into wells in row located outside the contour of bearing element improving solution is injected and hardening solution is charged in direction of this contour in fan-shaped manner by sector of 180°.

EFFECT: enhancement of efficiency of method for improving massive of loessial collapsible soil.

13 cl, 8 dwg