TILTED BUILDING STRAIGHTENING METHOD Russian patent published in 2006 - IPC E02D35/00 E02D3/02 

FIELD: building, particularly straightening, lifting, or lowering of foundation structures or of constructions erected on non-uniformly compressible ground.

SUBSTANCE: method involves creating screen around outer building perimeter, spaced 1.5-2.0 m from building foundation and extending for active zone depth by injection ground consolidation; injecting compacting mortar into active zone of building base characterized with maximal compressibility up to base ground stabilization with the use of injectors spaced 0.5-1.0 m from foundation or from outer and inner borders thereof and located on 2-3 m pitch, wherein the injectors are submersed for active zone depth; supplying consolidation mortar under decreasing pressure to create hydraulic fracturing cavities in the ground; providing following consolidation mortar under constant pressure of 2-10 atm to create consolidated ground zone with 1.5-2.5 m radius around injectors; softening ground zone having lesser compressibility to provide building settlement by drilling inclined uncased wells having 73-146 mm diameters and recovering cores from wells, wherein the wells are grouped in fan-like clusters or spaced 0.5-1.5 m apart; performing additional consolidation mortar injection in softened base ground zone up to core leveling and filling wells not closed with consolidation mortar up to full building base settlement stabilization.

EFFECT: elimination of non-uniform building base ground compression.

3 cl, 1 ex, 1 dwg